/* xSTELLAR8 and simul8R site styles. Brand: black, red and silver; type: Inter (self-hosted). */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('/fonts/inter-latin.woff2') format('woff2');
}

:root {
  --space: #0a0a0c;
  --space-2: #131316;
  --space-3: #1f1f24;
  --space-line: rgba(255, 255, 255, 0.09);
  --star: #dc2626;
  --star-2: #ef4444;
  --red-dark: #b91c1c;
  --red-tint: #fef2f2;
  --red-glow: rgba(220, 38, 38, 0.35);
  --silver: #c4c7ce;
  --silver-2: #e7e8ec;
  --violet: var(--red-dark);
  --ink: #111114;
  --ink-2: #44474f;
  --ink-3: #6b6f78;
  --line: #e6e7eb;
  --line-2: #d6d8de;
  --paper: #ffffff;
  --paper-2: #f6f6f8;
  --paper-3: #eeeff2;
  --ok: #15803d;
  --ok-bg: #ecfdf3;
  --bad: #b91c1c;
  --bad-bg: #fef2f2;
  --warn: #92400e;
  --warn-bg: #fffbeb;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(16, 17, 20, 0.06);
  --shadow: 0 1px 2px rgba(16, 17, 20, 0.05), 0 6px 24px rgba(16, 17, 20, 0.07);
  --shadow-lg: 0 2px 6px rgba(16, 17, 20, 0.06), 0 24px 60px rgba(16, 17, 20, 0.14);
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  --mono: ui-monospace, 'Cascadia Mono', Consolas, monospace;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  /* Red brand surfaces: buttons, icons, accent lines and bands */
  --red-grad: linear-gradient(135deg, #ef4444 0%, #dc2626 45%, #b91c1c 100%);
  --red-line: linear-gradient(90deg, #7f1d1d, #dc2626 30%, #f87171 50%, #dc2626 70%, #7f1d1d);
  --red-wash: #fff5f5;
  --red-edge: #fecaca;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-feature-settings: 'cv11', 'ss01';
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; }
a { color: var(--red-dark); text-underline-offset: 3px; }
a:hover { color: var(--star); }
h1, h2, h3, h4 { line-height: 1.12; margin: 0 0 0.5em; letter-spacing: -0.025em; font-weight: 800; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); }
h2 { font-size: clamp(1.65rem, 3.4vw, 2.4rem); }
h3 { font-size: 1.2rem; letter-spacing: -0.015em; font-weight: 700; }
p { margin: 0 0 1em; }
.h2 { font-size: clamp(1.65rem, 3.4vw, 2.4rem); }
.h3 { font-size: 1.2rem; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; }
.muted { color: var(--ink-3); }
.small { font-size: 0.875rem; }
.center { text-align: center; }
.hidden, [hidden] { display: none !important; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; z-index: 100; background: #fff; padding: 8px 12px; border-radius: 8px; }
:focus-visible { outline: 3px solid var(--star-2); outline-offset: 2px; border-radius: 4px; }
@media (max-width: 600px) { .hide-sm { display: none; } .wrap { padding: 0 18px; } }

/* ---------- Header ---------- */
.site-header {
  background: rgba(10, 10, 12, 0.92);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--space-line);
}
.nav { display: flex; align-items: center; gap: 28px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 800; letter-spacing: 0.02em; font-size: 1.15rem; }
.brand:hover { color: #fff; }
.brand svg { width: 46px; height: 23px; flex: none; }
.brand .x, .brand .eight { color: var(--star-2); }
.brand b { color: var(--silver); font-weight: 800; }
/* "by xSTELLAR8" beside the simul8R name links back to the main site. */
.by-main { font-weight: 600; font-size: 0.72rem; color: var(--silver); letter-spacing: 0.06em; text-transform: uppercase; margin-left: -14px; padding-left: 10px; border-left: 1px solid var(--space-line); text-decoration: none; white-space: nowrap; }
.by-main:hover { color: #fff; text-decoration: underline; }
.nav-links .to-main { display: none; }
@media (max-width: 900px) { .by-main { display: none; } .nav-links .to-main { display: block; } }
/* The brand names (simul8R, xSTELLAR8) are one word with a red 8: never split, never spaced. */
.brandword { white-space: nowrap; display: inline; letter-spacing: inherit; }
.brandword .eight { display: inline; margin: 0; padding: 0; background: none; width: auto; height: auto; border-radius: 0; color: var(--star); }
.eight { color: var(--star); }
/* On a red background a red 8 would vanish: it gets a little white backing, and stays red. */
.btn:not(.secondary):not(.light):not(.ghost):not(.link):not(.dark) .eight, .pill.dark .eight, .price-card .tag .eight, .showcase-tabs button[aria-selected='true'] .eight {
  background: #fff; color: var(--star); border-radius: 3px; padding: 0 0.08em; margin: 0 0.02em;
}
.btn.dark .eight, .btn.secondary .eight,
.site-header .eight, .site-footer .eight, .hero .eight, .page-hero .eight, .dash-head .eight, .dark-band .eight, .cta .eight, .auth-panel .eight { color: var(--star-2); }
.brand .sub { font-weight: 600; font-size: 0.72rem; color: var(--silver); letter-spacing: 0.06em; text-transform: uppercase; margin-left: 2px; padding-left: 10px; border-left: 1px solid var(--space-line); }
.nav-links { display: flex; gap: 6px; margin-left: auto; align-items: center; }
.nav-links a { color: #c9ccd3; text-decoration: none; font-weight: 500; font-size: 0.94rem; padding: 8px 12px; border-radius: 8px; transition: color 0.15s, background 0.15s; }
.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, 0.06); }
.nav-links a[aria-current='page'] { color: #fff; }
.nav-links .btn { margin-left: 6px; padding: 9px 16px; }
.nav-links .btn:hover { background: var(--star-2); }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid rgba(255,255,255,.25); color: #fff; border-radius: 10px; padding: 7px 12px; font: inherit; font-size: 0.9rem; }
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav-links { display: none; position: absolute; left: 0; right: 0; top: 68px; background: var(--space); flex-direction: column; align-items: stretch; gap: 2px; padding: 10px 18px 18px; border-bottom: 1px solid var(--space-line); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px; }
  .nav-links .btn { margin: 8px 0 0; text-align: center; }
  .brand .sub { display: none; }
}
.local-banner { background: #fffbeb; color: #78350f; text-align: center; font-size: 0.85rem; padding: 7px 16px; border-bottom: 1px solid #fde68a; }
.local-banner a { color: #78350f; font-weight: 700; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 0; border-radius: 11px; padding: 12px 22px;
  font: inherit; font-weight: 650; font-size: 0.95rem; line-height: 1.2;
  cursor: pointer; text-decoration: none;
  background: var(--star); color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,.15) inset, 0 6px 16px -6px var(--red-glow);
  transition: transform 0.12s var(--ease), background 0.15s, box-shadow 0.15s;
}
.btn:hover { background: var(--red-dark); color: #fff; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn.secondary { background: transparent; color: inherit; box-shadow: inset 0 0 0 1.5px currentColor; }
.btn.secondary:hover { background: rgba(127, 127, 127, 0.08); color: inherit; }
.btn.dark { background: var(--ink); color: #fff; box-shadow: 0 6px 16px -8px rgba(0,0,0,.5); }
.btn.dark:hover { background: #2a2a30; }
.btn.light { background: #fff; color: var(--ink); box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--line); }
.btn.light:hover { background: var(--paper-2); color: var(--ink); }
.btn.ghost { background: transparent; color: var(--ink-2); box-shadow: none; }
.btn.ghost:hover { background: var(--paper-2); color: var(--ink); }
.btn.small { padding: 8px 14px; font-size: 0.86rem; border-radius: 9px; }
.btn.large { padding: 15px 26px; font-size: 1.02rem; border-radius: 13px; }
.btn.block { width: 100%; }
.btn.danger { background: var(--bad); }
.btn.link { background: none; color: var(--red-dark); padding: 0; font-weight: 600; box-shadow: none; }
.btn.link:hover { transform: none; text-decoration: underline; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 480px at 82% -10%, rgba(220, 38, 38, 0.32), transparent 60%),
    radial-gradient(700px 420px at -5% 110%, rgba(196, 199, 206, 0.12), transparent 60%),
    var(--space);
  color: #fff;
  padding: 96px 0 104px;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 60% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 60% 30%, #000 20%, transparent 75%);
  pointer-events: none;
}
.hero .wrap { position: relative; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 960px) { .hero-grid { grid-template-columns: 1fr; gap: 44px; } }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.74rem; font-weight: 700; color: var(--star); margin-bottom: 16px; }
.hero .eyebrow, .page-hero .eyebrow, .cta .eyebrow, .dark-band .eyebrow { color: #f87171; }
.badge-dot { display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 10px; border-radius: 999px; background: rgba(255,255,255,.07); border: 1px solid var(--space-line); color: #e5e7eb; font-size: 0.8rem; font-weight: 600; letter-spacing: 0; text-transform: none; }
.badge-dot::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--star-2); box-shadow: 0 0 0 4px rgba(239,68,68,.2); }
.hero h1 { max-width: 760px; }
.hero h1 em, .grad { font-style: normal; background: linear-gradient(92deg, #ff6b6b, #dc2626 55%, #f3f4f6); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: 1.18rem; color: #b9bdc6; max-width: 600px; margin-bottom: 32px; }
.hero .btn.secondary { color: #fff; box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.35); }
.hero .btn.secondary:hover { background: rgba(255,255,255,.08); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 30px; }
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 0.82rem; color: #d1d5db; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--space-line); background: rgba(255,255,255,.035); }
.chip svg { width: 14px; height: 14px; color: #f87171; }
.page-hero { position: relative; overflow: hidden; background: radial-gradient(700px 300px at 85% -40%, rgba(220,38,38,.3), transparent 60%), var(--space); color: #fff; padding: 64px 0 56px; }
.page-hero p { color: #b9bdc6; max-width: 680px; margin: 0; font-size: 1.08rem; }

/* Browser-window frame around product screenshots */
.window { border-radius: 14px; overflow: hidden; background: #fff; box-shadow: 0 30px 80px -20px rgba(0,0,0,.6), 0 0 0 1px rgba(255,255,255,.08); }
.window-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; background: #1c1c21; }
.window-bar > span { width: 11px; height: 11px; border-radius: 50%; background: #3a3a42; }
.window-bar > span:first-child { background: #ef4444; }
.window-bar em { margin-left: 10px; font-style: normal; font-size: 0.74rem; color: #9ca3af; background: #111114; padding: 3px 12px; border-radius: 6px; flex: 1; max-width: 300px; }
.window img { display: block; width: 100%; }
.light .window { box-shadow: var(--shadow-lg), 0 0 0 1px var(--line); }
.tilt { transform: perspective(1600px) rotateY(-7deg) rotateX(2deg); transition: transform 0.6s var(--ease); }
.tilt:hover { transform: perspective(1600px) rotateY(0) rotateX(0); }
@media (max-width: 960px) { .tilt { transform: none; } }

/* ---------- Sections ---------- */
section { padding: 96px 0; }
section.tight { padding: 64px 0; }
section.alt { background: var(--paper-2); }
.dark-band { background: var(--space); color: #fff; }
.dark-band .muted { color: #9ca3af; }
.section-head { max-width: 700px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { font-size: 1.08rem; }
.grid { display: grid; gap: 24px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(310px, 1fr)); }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); }
.grid.four { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 36px; } section { padding: 72px 0; } }
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s;
}
a.card, .card.hover { color: inherit; text-decoration: none; display: block; }
a.card:hover, .card.hover:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--line-2); }
.card h3 { margin-bottom: 0.4em; }
.card p:last-child { margin-bottom: 0; }
.icon { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--red-tint); color: var(--star); margin-bottom: 18px; border: 1px solid #fde2e2; }
.icon svg { width: 22px; height: 22px; }
.dark-band .icon { background: rgba(220,38,38,.14); border-color: rgba(239,68,68,.25); color: #f87171; }
.feature-list { list-style: none; padding: 0; margin: 0 0 20px; }
.feature-list li { padding-left: 30px; position: relative; margin-bottom: 11px; }
.feature-list li::before { content: ''; position: absolute; left: 0; top: 5px; width: 19px; height: 19px; border-radius: 50%; background: var(--ok-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2315803d'%3E%3Cpath d='M8.1 13.3 4.8 10l-1.1 1.1 4.4 4.4 8.4-8.4-1.1-1.1z'/%3E%3C/svg%3E") center/14px no-repeat; }
.dark-band .feature-list li::before { background-color: rgba(34,197,94,.15); }
.steps { counter-reset: step; display: grid; gap: 22px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.step { position: relative; padding: 26px; border-radius: var(--radius); background: var(--paper); border: 1px solid var(--line); }
.step::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: var(--ink); color: #fff; font-weight: 800; margin-bottom: 14px; }

.feature-course { display: grid; grid-template-columns: 1.3fr 1fr; gap: 0; overflow: hidden; padding: 0; }
.feature-course .body { padding: 38px; }
.feature-course .side { background: linear-gradient(160deg, var(--space-2), var(--space)); color: #fff; padding: 38px; display: flex; flex-direction: column; gap: 14px; justify-content: center; }
.feature-course .side .stat { display: flex; justify-content: space-between; border-bottom: 1px solid var(--space-line); padding-bottom: 10px; }
.feature-course .side .stat span:first-child { color: var(--silver); }
.feature-course .side .stat span:last-child { color: #fff; font-weight: 700; }
@media (max-width: 760px) { .feature-course { grid-template-columns: 1fr; } }

.cta { position: relative; overflow: hidden; background: radial-gradient(600px 300px at 90% 0%, rgba(220,38,38,.35), transparent 60%), var(--space); color: #fff; border-radius: 24px; padding: 64px 48px; text-align: center; }
.cta p { color: #b9bdc6; max-width: 600px; margin: 0 auto 28px; font-size: 1.08rem; }
.cta .btn.secondary { color: #fff; box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.35); }
@media (max-width: 600px) { .cta { padding: 44px 22px; border-radius: 18px; } }

/* Platform showcase (tabs + screenshot) */
.showcase-tabs { display: inline-flex; flex-wrap: wrap; gap: 6px; padding: 6px; border-radius: 14px; background: rgba(255,255,255,.06); border: 1px solid var(--space-line); margin-bottom: 28px; }
.light .showcase-tabs { background: var(--paper-3); border-color: var(--line); }
.showcase-tabs button { border: 0; background: none; color: #c9ccd3; font: inherit; font-weight: 600; font-size: 0.92rem; padding: 10px 16px; border-radius: 10px; cursor: pointer; transition: background 0.15s, color 0.15s; }
.light .showcase-tabs button { color: var(--ink-2); }
.showcase-tabs button[aria-selected='true'] { background: #fff; color: var(--ink); box-shadow: var(--shadow-sm); }
.showcase-note { font-size: 0.9rem; color: #9ca3af; margin-top: 16px; }

/* Pricing */
.pricing { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; align-items: stretch; }
@media (max-width: 1080px) { .pricing { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .pricing { grid-template-columns: 1fr; } }
.price-card { position: relative; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 28px 24px; box-shadow: var(--shadow-sm); }
.price-card.featured { border: 2px solid var(--star); box-shadow: 0 20px 50px -20px var(--red-glow); }
.price-card .tag { position: absolute; top: -12px; left: 24px; background: var(--star); color: #fff; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; }
.price-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.price-card .amount { font-size: 2.6rem; font-weight: 850; letter-spacing: -0.04em; line-height: 1; margin: 14px 0 4px; }
.price-card .amount small { font-size: 0.95rem; font-weight: 600; color: var(--ink-3); letter-spacing: 0; }
.price-card .note { font-size: 0.85rem; color: var(--ink-3); min-height: 1.4em; margin-bottom: 18px; }
.price-card .feature-list { font-size: 0.92rem; margin-bottom: 24px; flex: 1; }
.price-card .btn { width: 100%; }

/* FAQ */
.faq { max-width: 820px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary { cursor: pointer; list-style: none; font-weight: 650; font-size: 1.04rem; padding: 18px 40px 18px 0; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 6px; top: 14px; font-size: 1.5rem; font-weight: 400; color: var(--ink-3); transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--ink-2); margin: 0 0 18px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--space); color: #9ca0a8; padding: 64px 0 32px; font-size: 0.93rem; border-top: 1px solid var(--space-line); }
.site-footer a { color: #c9ccd3; text-decoration: none; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 40px; }
.footer-grid h4 { color: #fff; font-size: 0.85rem; letter-spacing: 0.04em; margin-bottom: 14px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 9px; }
.footer-bottom { border-top: 1px solid var(--space-line); padding-top: 22px; font-size: 0.82rem; line-height: 1.6; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-grid > div:first-child { grid-column: 1 / -1; } }

/* ---------- Forms ---------- */
form .field { margin-bottom: 18px; }
label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; color: var(--ink); }
input, select, textarea {
  width: 100%; font: inherit; font-size: 1rem; padding: 11px 14px; border: 1px solid var(--line-2); border-radius: 11px; background: #fff; color: var(--ink);
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:hover, select:hover, textarea:hover { border-color: #b9bcc5; }
input:focus, select:focus, textarea:focus { border-color: var(--star); outline: none; box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.12); }
textarea { min-height: 130px; resize: vertical; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 500; }
.check input { width: auto; margin-top: 5px; accent-color: var(--star); }
.hint { font-size: 0.84rem; color: var(--ink-3); margin-top: 5px; }
.hp { position: absolute; left: -5000px; }
.alert { border-radius: 12px; padding: 13px 16px; margin-bottom: 18px; font-size: 0.95rem; border: 1px solid transparent; }
.alert.error { background: var(--bad-bg); color: #7f1d1d; border-color: #fecaca; }
.alert.ok { background: var(--ok-bg); color: #14532d; border-color: #bbf7d0; }
.alert.warn { background: var(--warn-bg); color: var(--warn); border-color: #fde68a; }

/* Sign-in pages: form beside a dark brand panel */
.auth { display: grid; grid-template-columns: 1fr 1fr; min-height: calc(100vh - 68px); }
.auth-panel { background: radial-gradient(600px 400px at 100% 0%, rgba(220,38,38,.35), transparent 60%), var(--space); color: #fff; padding: 64px 56px; display: flex; flex-direction: column; justify-content: center; }
.auth-panel h2 { font-size: 2rem; }
.auth-panel p { color: #b9bdc6; }
.auth-main { display: flex; align-items: center; justify-content: center; padding: 48px 24px; background: var(--paper-2); }
.auth-card { width: 100%; max-width: 440px; margin: 0; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 36px; box-shadow: var(--shadow); }
.auth-card h1 { font-size: 1.7rem; }
@media (max-width: 900px) { .auth { grid-template-columns: 1fr; } .auth-panel { display: none; } .auth-main { min-height: calc(100vh - 68px); } }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
table { width: 100%; border-collapse: collapse; font-size: 0.94rem; }
th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { background: var(--paper-2); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--ink-3); font-weight: 700; }
tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: #fafafb; }
.num { text-align: right; font-variant-numeric: tabular-nums; }

.pill { display: inline-flex; align-items: center; gap: 5px; font-size: 0.72rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: var(--paper-3); color: var(--ink-2); text-transform: uppercase; letter-spacing: 0.05em; white-space: nowrap; }
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.bad { background: var(--bad-bg); color: var(--bad); }
.pill.warn { background: var(--warn-bg); color: var(--warn); }
.pill.violet { background: var(--red-tint); color: var(--red-dark); }
.pill.dark { background: var(--ink); color: #fff; }

/* ---------- Course listing ---------- */
.class-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; padding: 18px 0; border-top: 1px solid var(--line); }
.class-row:first-child { border-top: 0; }
.class-row .when { font-weight: 700; }
.price { font-size: 1.4rem; font-weight: 800; letter-spacing: -0.02em; }
.outline { counter-reset: ch; list-style: none; padding: 0; }
.outline li { counter-increment: ch; padding: 14px 0 14px 54px; position: relative; border-bottom: 1px solid var(--line); }
.outline li::before { content: counter(ch); position: absolute; left: 0; top: 12px; width: 36px; height: 36px; border-radius: 10px; background: var(--ink); color: #fff; display: grid; place-items: center; font-weight: 800; }

/* ---------- Dashboard ---------- */
.dash-head { background: radial-gradient(700px 300px at 90% -30%, rgba(220,38,38,.3), transparent 60%), var(--space); color: #fff; padding: 44px 0 96px; }
.dash-head h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin-bottom: 6px; }
.dash-head p { color: #b9bdc6; margin: 0; }
.dash-head .wrap { display: flex; flex-wrap: wrap; gap: 18px; align-items: flex-end; justify-content: space-between; }
.access-pill { display: inline-flex; align-items: center; gap: 10px; padding: 10px 16px; border-radius: 12px; background: rgba(255,255,255,.06); border: 1px solid var(--space-line); font-size: 0.9rem; }
.access-pill strong { color: #fff; }
.dash-body { margin-top: -64px; padding-bottom: 80px; }
.panel { background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); padding: 26px; margin-bottom: 24px; }
.panel-head { display: flex; flex-wrap: wrap; gap: 12px; align-items: baseline; justify-content: space-between; margin-bottom: 18px; }
.panel-head h2 { font-size: 1.25rem; margin: 0; letter-spacing: -0.02em; }
.panel-head p { margin: 0; }
.dash-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; }
@media (max-width: 960px) { .dash-grid { grid-template-columns: 1fr; } }

.platforms { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 860px) { .platforms { grid-template-columns: repeat(2, 1fr); } }
.platform { position: relative; display: flex; flex-direction: column; gap: 10px; text-align: left; border: 1.5px solid var(--line); border-radius: 14px; padding: 12px; background: #fff; cursor: pointer; font: inherit; color: var(--ink); transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s; }
.platform:hover { border-color: var(--line-2); transform: translateY(-1px); }
.platform[aria-checked='true'] { border-color: var(--star); box-shadow: 0 0 0 4px rgba(220,38,38,.1); }
.platform[aria-checked='true']::after { content: '✓'; position: absolute; top: 8px; right: 8px; width: 22px; height: 22px; border-radius: 50%; background: var(--star); color: #fff; display: grid; place-items: center; font-size: 0.75rem; font-weight: 800; }
.platform .thumb { height: 74px; border-radius: 9px; overflow: hidden; background: var(--paper-3); border: 1px solid var(--line); }
.platform .thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top left; display: block; }
.platform strong { font-size: 0.92rem; line-height: 1.25; }
.platform span { font-size: 0.78rem; color: var(--ink-3); line-height: 1.3; }

.exam-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.exam-card { position: relative; border: 1px solid var(--line); border-radius: 16px; padding: 20px; background: linear-gradient(180deg, #fff, #fbfbfc); display: flex; flex-direction: column; gap: 8px; transition: box-shadow 0.2s, transform 0.2s; }
.exam-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.exam-card .exam-no { font-size: 0.78rem; font-weight: 700; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.08em; }
.exam-card h3 { margin: 0; font-size: 1.15rem; }
.exam-card .meta { font-size: 0.85rem; color: var(--ink-3); }
.exam-card .best { font-size: 0.85rem; }
.exam-card .actions { margin-top: auto; padding-top: 8px; display: flex; gap: 8px; }
.exam-card.locked { background: var(--paper-2); }
.exam-card.locked h3, .exam-card.locked .meta { color: var(--ink-3); }
.ring { --p: 0; width: 46px; height: 46px; border-radius: 50%; background: conic-gradient(var(--c, var(--ok)) calc(var(--p) * 1%), var(--paper-3) 0); display: grid; place-items: center; position: absolute; top: 18px; right: 18px; }
.ring::before { content: attr(data-label); width: 36px; height: 36px; border-radius: 50%; background: #fff; display: grid; place-items: center; font-size: 0.72rem; font-weight: 800; }

.inprogress { display: grid; gap: 10px; }
.ip-row { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; padding: 14px 16px; border-radius: 14px; border: 1px solid #fde68a; background: #fffdf5; }
.ip-icon { width: 40px; height: 40px; border-radius: 10px; background: #fff; border: 1px solid #fde68a; display: grid; place-items: center; color: var(--warn); }
.ip-icon svg { width: 20px; height: 20px; }
.ip-row strong { display: block; }
.ip-row .meta { font-size: 0.86rem; color: var(--ink-3); }
.ip-row .btn-row { gap: 8px; }
@media (max-width: 640px) { .ip-row { grid-template-columns: 1fr; } .ip-icon { display: none; } }

.more-practice { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 700px) { .more-practice { grid-template-columns: 1fr; } }
.chapter-buttons { display: flex; flex-wrap: wrap; gap: 8px; }
.chapter-buttons .btn { font-weight: 600; }
.toggle { display: inline-flex; align-items: center; gap: 10px; font-weight: 500; font-size: 0.92rem; cursor: pointer; margin: 0; }
.toggle input { appearance: none; -webkit-appearance: none; width: 40px; height: 22px; border-radius: 999px; background: var(--line-2); position: relative; cursor: pointer; padding: 0; border: 0; transition: background 0.2s; flex: none; margin: 0; }
.toggle input::after { content: ''; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; box-shadow: var(--shadow-sm); transition: transform 0.2s var(--ease); }
.toggle input:checked { background: var(--star); }
.toggle input:checked::after { transform: translateX(18px); }

.upsell { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 700px) { .upsell { grid-template-columns: 1fr; } }
.upsell .card { padding: 22px; }
.upsell .card h3 { font-size: 1.05rem; }

.bars { display: grid; gap: 12px; }
.bar { display: grid; grid-template-columns: minmax(0, 220px) 1fr 54px; gap: 12px; align-items: center; font-size: 0.9rem; }
.bar .track { height: 10px; border-radius: 99px; background: var(--paper-3); overflow: hidden; }
.bar .fill { height: 100%; border-radius: 99px; background: var(--ink-2); transition: width 0.6s var(--ease); }
.bar .fill.low { background: var(--bad); }
.bar .fill.mid { background: #d97706; }
.bar .fill.high { background: var(--ok); }
@media (max-width: 560px) { .bar { grid-template-columns: 1fr 50px; } .bar .track { grid-column: 1 / -1; grid-row: 2; } }
.empty { text-align: center; color: var(--ink-3); padding: 26px 10px; }
.empty svg { width: 36px; height: 36px; color: var(--line-2); margin-bottom: 8px; }

/* ---------- Standard exam screen (xSTELLAR8 layout) ---------- */
.exam-shell { display: grid; grid-template-columns: 1fr 270px; gap: 28px; align-items: start; padding-top: 32px; padding-bottom: 80px; }
@media (max-width: 900px) { .exam-shell { grid-template-columns: 1fr; } }
.exam-bar { position: sticky; top: 68px; z-index: 10; background: rgba(255,255,255,.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.exam-bar .wrap { display: flex; align-items: center; gap: 16px; min-height: 58px; }
body.focus-mode .site-header, body.focus-mode .local-banner { display: none; }
body.focus-mode .exam-bar { top: 0; }
body.focus-mode .palette { top: 82px; }
.exam-mark { display: inline-flex; }
.timer { font-family: var(--mono); font-size: 1.1rem; font-weight: 700; padding: 6px 12px; border-radius: 9px; background: var(--paper-2); border: 1px solid var(--line); }
.timer.low { background: var(--bad-bg); color: var(--bad); border-color: #fecaca; }
.save-state { font-size: 0.84rem; color: var(--ink-3); }
.q-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow-sm); }
.q-meta { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.q-text { font-size: 1.08rem; white-space: pre-wrap; margin-bottom: 22px; }
.q-text.has-table { font-family: var(--mono); font-size: 0.93rem; }
.choices { display: grid; gap: 10px; margin-bottom: 20px; }
.choice { display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; border: 1.5px solid var(--line); border-radius: 12px; cursor: pointer; font-weight: 500; margin: 0; white-space: pre-wrap; transition: border-color 0.15s, background 0.15s; }
.choice:hover { border-color: #f3b4b4; }
.choice input { width: auto; margin-top: 4px; accent-color: var(--star); }
.choice .letter { font-weight: 800; color: var(--red-dark); min-width: 1.2em; }
.choice.selected { border-color: var(--star); background: var(--red-tint); }
.choice.correct { border-color: var(--ok); background: var(--ok-bg); }
.choice.wrong { border-color: var(--bad); background: var(--bad-bg); }
.explanation { background: var(--paper-2); border-radius: 12px; padding: 16px 18px; font-size: 0.95rem; border-left: 3px solid var(--ink-2); }
.q-nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 20px; flex-wrap: wrap; }
.palette { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; position: sticky; top: 146px; }
.palette-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 6px; margin: 12px 0; }
@media (max-width: 900px) { .palette { position: static; } .palette-grid { grid-template-columns: repeat(10, 1fr); } }
.palette-grid button { aspect-ratio: 1; border: 1.5px solid var(--line); background: #fff; border-radius: 8px; font: inherit; font-size: 0.8rem; font-weight: 700; cursor: pointer; padding: 0; color: var(--ink-2); position: relative; }
.palette-grid button.answered { background: var(--ink); color: #fff; border-color: var(--ink); }
.palette-grid button.current { outline: 3px solid var(--star-2); outline-offset: 1px; }
.palette-grid button.flagged::after { content: ''; position: absolute; top: -4px; right: -4px; width: 10px; height: 10px; border-radius: 50%; background: var(--star); border: 2px solid #fff; }
.legend { display: grid; gap: 4px; font-size: 0.8rem; color: var(--ink-3); }
.result-hero { text-align: center; padding: 44px 28px; }
.result-hero .score { font-size: 3.8rem; font-weight: 900; line-height: 1; margin: 10px 0; letter-spacing: -0.04em; }

/* ---------- Admin ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 28px; overflow-x: auto; }
.tabs button { background: none; border: 0; font: inherit; font-weight: 600; padding: 12px 16px; color: var(--ink-3); border-bottom: 2.5px solid transparent; cursor: pointer; white-space: nowrap; }
.tabs button[aria-selected='true'] { color: var(--ink); border-bottom-color: var(--star); }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; margin-bottom: 28px; }
@media (max-width: 600px) { .stat-grid { grid-template-columns: 1fr 1fr; gap: 10px; } .stat-card { padding: 14px; } .stat-card .v { font-size: 1.4rem; } }
.stat-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 18px; box-shadow: var(--shadow-sm); }
.stat-card .v { font-size: 1.8rem; font-weight: 800; letter-spacing: -0.03em; }
.stat-card .l { font-size: 0.84rem; color: var(--ink-3); }
.toolbar { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 18px; }
.toolbar select, .toolbar input { width: auto; }
dialog { border: 0; border-radius: 18px; padding: 0; width: min(720px, calc(100vw - 32px)); box-shadow: 0 30px 80px rgba(0,0,0,.35); }
dialog::backdrop { background: rgba(10, 10, 12, 0.55); backdrop-filter: blur(2px); }
dialog form { padding: 28px; }
dialog h3 { margin-bottom: 18px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
@media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }
.option-row { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; }
.option-row input[type='text'] { flex: 1; }
.option-row input[type='checkbox'] { width: auto; }
.q-admin { border-bottom: 1px solid var(--line); padding: 16px 0; }
.q-admin .q-text { font-size: 1rem; margin-bottom: 8px; }
.q-admin ol { margin: 0 0 8px; padding-left: 22px; }
.q-admin li.correct { color: var(--ok); font-weight: 700; }

.spinner { width: 28px; height: 28px; border: 3px solid var(--line); border-top-color: var(--star); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 40px auto; }
@keyframes spin { to { transform: rotate(360deg); } }
.prose h2 { margin-top: 1.6em; font-size: 1.4rem; }
.prose { padding: 56px 24px 88px; }

/* ---------- Pictures: image spots, placeholders and the gallery ---------- */
[data-ratio='4 / 3'] { --ratio: 4 / 3; }
[data-ratio='16 / 9'] { --ratio: 16 / 9; }
[data-ratio='21 / 9'] { --ratio: 21 / 9; }
/* The shape is reserved from the first paint, so the page doesn't jump when the picture arrives. */
.slot, [data-slot] { position: relative; width: 100%; aspect-ratio: var(--ratio, 4 / 3); border-radius: 16px; overflow: hidden; background: var(--space); margin-bottom: 20px; box-shadow: var(--shadow-sm); }
.slot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.slot-empty { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 8px; padding: 16px; text-align: center; color: #fca5a5;
  background: radial-gradient(70% 90% at 80% 0%, rgba(239, 68, 68, .45), transparent 65%), linear-gradient(135deg, #34090a, #0a0a0c); }
.slot-empty svg { width: 44px; height: 44px; opacity: .75; }
.slot-empty.admin { border: 2px dashed #f87171; border-radius: 16px; font-size: 0.86rem; color: #fecaca; }
.slot-empty.admin strong { color: #fff; font-size: 0.95rem; }
.slot-empty.admin a { color: #fff; font-weight: 700; }
.card > .slot:first-child { border-radius: 12px; }
.gallery-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 18px; }
.gallery-item { display: block; width: 100%; padding: 0; border: 0; background: var(--space); border-radius: 14px; overflow: hidden; cursor: zoom-in; box-shadow: var(--shadow-sm); }
.gallery-item img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 0.35s var(--ease); }
.gallery-item:hover img { transform: scale(1.04); }
.gallery-caption { display: block; margin-top: 8px; font-size: 0.9rem; color: var(--ink-2); }
/* Admin > Gallery */
.g-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.g-card { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-sm); }
.g-card img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.g-card figcaption { padding: 10px 12px 12px; }
.g-thumb { width: 96px; height: 64px; object-fit: cover; border-radius: 8px; display: block; }
.g-stage { display: grid; grid-template-columns: 180px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.g-stage > img { width: 180px; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 10px; }
@media (max-width: 600px) { .g-stage { grid-template-columns: 1fr; } .g-stage > img { width: 100%; } }
.g-big { display: block; max-width: 100%; max-height: 260px; margin: 0 auto 16px; border-radius: 10px; }
.g-pick { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; margin-bottom: 16px; max-height: 340px; overflow: auto; }
.pick { position: relative; display: block; margin: 0; padding: 4px; border: 2px solid var(--line); border-radius: 12px; cursor: pointer; font-weight: 500; }
.pick input { position: absolute; opacity: 0; }
.pick img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 8px; }
.pick span { display: block; margin-top: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pick:has(input:checked) { border-color: var(--star); background: var(--red-wash); box-shadow: 0 0 0 3px rgba(220, 38, 38, .2); }
.pick:has(input:focus-visible) { outline: 3px solid var(--star-2); }
dialog.lightbox { width: min(1100px, 96vw); background: #0a0a0c; color: #fff; border-radius: 16px; padding: 12px; }
dialog.lightbox img { display: block; max-width: 100%; max-height: 78vh; margin: 0 auto; border-radius: 10px; }
dialog.lightbox figcaption { padding: 10px 6px 2px; text-align: center; color: #e5e7eb; }
dialog.lightbox .lb-bar { display: flex; justify-content: space-between; gap: 8px; padding: 8px 2px 0; }

/* ---------- Red accents ---------- */
::selection { background: #fecaca; color: #7f1d1d; }
/* A thin red line under the header and above the footer, and at the foot of every dark hero. */
.site-header::after, .hero::after, .page-hero::after, .dash-head::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 3px; background: var(--red-line); pointer-events: none;
}
.page-hero, .dash-head { position: relative; }
/* The panel that overlaps the dashboard banner must stay above it so its tabs and buttons can be clicked. */
.dash-body { position: relative; z-index: 1; }
.nav-links a[aria-current='page'] { box-shadow: inset 0 -2px 0 var(--star-2); border-radius: 8px 8px 0 0; }
.hero {
  background:
    radial-gradient(900px 520px at 85% -12%, rgba(220, 38, 38, 0.48), transparent 60%),
    radial-gradient(700px 420px at -8% 112%, rgba(185, 28, 28, 0.32), transparent 60%),
    var(--space);
}
.page-hero { background: radial-gradient(760px 340px at 88% -40%, rgba(220,38,38,.48), transparent 62%), radial-gradient(520px 260px at 0% 140%, rgba(185,28,28,.25), transparent 60%), var(--space); }
.dash-head { background: radial-gradient(760px 340px at 92% -30%, rgba(220,38,38,.45), transparent 62%), var(--space); }
.auth-panel { background: radial-gradient(640px 440px at 100% 0%, rgba(220,38,38,.5), transparent 62%), radial-gradient(480px 320px at 0% 100%, rgba(185,28,28,.28), transparent 60%), var(--space); }
.dark-band { background: radial-gradient(820px 420px at 100% 0%, rgba(220,38,38,.28), transparent 60%), radial-gradient(600px 360px at 0% 100%, rgba(185,28,28,.18), transparent 60%), var(--space); }
section.alt { background: linear-gradient(180deg, var(--red-wash), #fff 70%); border-top: 1px solid #fde4e4; }

/* Buttons: red gradient with a warm glow. */
.btn { background: var(--red-grad); }
.btn:hover { background: linear-gradient(135deg, #dc2626, #991b1b); box-shadow: 0 1px 0 rgba(255,255,255,.15) inset, 0 10px 22px -8px var(--red-glow); }
.btn.secondary, .btn.ghost, .btn.link { background: transparent; }
.btn.light { background: #fff; }
.btn.dark { background: var(--ink); }
.btn.danger { background: var(--bad); }

/* Section titles get a short red bar; eyebrows a red dash. */
.section-head h2::after { content: ''; display: block; width: 56px; height: 4px; border-radius: 4px; background: var(--red-grad); margin-top: 16px; }
.section-head.center h2::after { margin-left: auto; margin-right: auto; }
.eyebrow:not(.badge-dot):not(:has(.badge-dot))::before { content: ''; width: 18px; height: 2px; border-radius: 2px; background: currentColor; }
.auth-main { background: radial-gradient(500px 300px at 100% 100%, #fee2e2, transparent 70%), var(--red-wash); }
.auth-card { border-top: 4px solid var(--star); }

/* Icons and numbers in solid red. */
.icon { background: var(--red-grad); color: #fff; border: 0; box-shadow: 0 8px 18px -8px var(--red-glow); }
.dark-band .icon { background: var(--red-grad); color: #fff; }
.step::before, .outline li::before { background: var(--red-grad); box-shadow: 0 6px 14px -6px var(--red-glow); }
.feature-list li::before, .dark-band .feature-list li::before { background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23fff'%3E%3Cpath d='M8.1 13.3 4.8 10l-1.1 1.1 4.4 4.4 8.4-8.4-1.1-1.1z'/%3E%3C/svg%3E") center/13px no-repeat, var(--red-grad); }
.chip svg { color: #f87171; }

/* Cards and panels: a red top edge, and a red glow on hover. */
.grid > .card, .steps > .step, .panel, .stat-card, .format, .exam-card, .price-card { border-top: 3px solid var(--star); }
a.card:hover, .card.hover:hover, .grid > .card:hover { border-color: var(--red-edge); border-top-color: var(--star); box-shadow: 0 14px 34px -14px rgba(220, 38, 38, .35); }
.exam-card:hover, .class-card:hover { box-shadow: 0 14px 34px -14px rgba(220, 38, 38, .35); }
.exam-card .exam-no { color: var(--red-dark); }
.price-card.featured { border: 2px solid var(--star); border-top-width: 5px; }
.stat-card .v { color: var(--red-dark); }
.feature-course { border-top: 3px solid var(--star); }
.feature-course .side { background: radial-gradient(420px 260px at 100% 0%, rgba(220,38,38,.4), transparent 65%), linear-gradient(160deg, var(--space-2), var(--space)); }
.fact-card { border-top: 4px solid var(--star); }
.format strong { color: var(--red-dark); }

/* Call-to-action panel: a deep red band. */
.cta { background: radial-gradient(640px 320px at 92% 0%, rgba(248,113,113,.45), transparent 60%), radial-gradient(520px 300px at 0% 100%, rgba(10,10,12,.55), transparent 60%), linear-gradient(135deg, #7f1d1d 0%, #450a0a 55%, #0a0a0c 100%); box-shadow: 0 30px 70px -30px rgba(127, 29, 29, .7); }
.cta p { color: #fecaca; }
.cta .eyebrow { color: #fecaca; }
.cta .btn:not(.secondary) { background: #fff; color: var(--red-dark); }
.cta .btn:not(.secondary):hover { background: #fee2e2; color: #7f1d1d; }

/* Tabs, tables, FAQ and the footer. */
.showcase-tabs button[aria-selected='true'] { background: var(--red-grad); color: #fff; box-shadow: 0 6px 14px -6px var(--red-glow); }
.tabs button:hover { color: var(--red-dark); }
th { background: var(--red-wash); color: #991b1b; }
tbody tr:hover td { background: #fffafa; }
.faq summary:hover, .faq details[open] summary { color: var(--red-dark); }
.faq summary::after { color: var(--star); font-weight: 600; }
.site-footer { position: relative; border-top: 0; background: radial-gradient(700px 300px at 100% 0%, rgba(220,38,38,.16), transparent 60%), var(--space); }
.site-footer::before { content: ''; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: var(--red-line); }
.footer-grid h4 { color: #f87171; text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.76rem; }
.site-footer a:hover { color: #fca5a5; }
.promo-box { border-color: var(--red-edge); background: var(--red-wash); }
.platform[aria-checked='true'] { background: var(--red-wash); }
.palette-grid button.answered { background: var(--red-dark); border-color: var(--red-dark); }

/* ---------- More red, second pass ---------- */
:root { --space-red: linear-gradient(165deg, #34090a 0%, #170708 38%, #0a0a0c 78%); }
.site-header { background: linear-gradient(90deg, rgba(52, 9, 10, .97), rgba(14, 8, 9, .97) 50%, rgba(52, 9, 10, .97)); border-bottom-color: rgba(248, 113, 113, .25); }
.site-header::after, .hero::after, .page-hero::after, .dash-head::after, .site-footer::before { height: 4px; }
.nav-links a:hover { background: rgba(220, 38, 38, .22); }
.hero {
  background:
    radial-gradient(1000px 560px at 88% -14%, rgba(239, 68, 68, .55), transparent 62%),
    radial-gradient(760px 460px at -10% 115%, rgba(185, 28, 28, .45), transparent 62%),
    var(--space-red);
}
.page-hero { background: radial-gradient(820px 380px at 90% -45%, rgba(239, 68, 68, .55), transparent 64%), radial-gradient(560px 300px at 0% 150%, rgba(185, 28, 28, .4), transparent 62%), var(--space-red); }
.dash-head { background: radial-gradient(820px 380px at 94% -35%, rgba(239, 68, 68, .5), transparent 64%), var(--space-red); }
.auth-panel { background: radial-gradient(700px 480px at 100% 0%, rgba(239, 68, 68, .6), transparent 64%), radial-gradient(520px 360px at 0% 100%, rgba(185, 28, 28, .42), transparent 62%), var(--space-red); }
.dark-band { background: radial-gradient(900px 480px at 100% 0%, rgba(239, 68, 68, .42), transparent 62%), radial-gradient(680px 400px at 0% 100%, rgba(185, 28, 28, .32), transparent 62%), var(--space-red); }
.cta { background: radial-gradient(660px 340px at 92% 0%, rgba(252, 165, 165, .5), transparent 60%), radial-gradient(520px 300px at 0% 100%, rgba(10, 10, 12, .5), transparent 60%), linear-gradient(135deg, #991b1b 0%, #5c0f10 52%, #1a0708 100%); }
.site-footer { background: radial-gradient(760px 340px at 100% 0%, rgba(239, 68, 68, .3), transparent 62%), linear-gradient(180deg, #34090a 0%, #170708 40%, #0a0a0c 100%); }
section.alt { background: linear-gradient(180deg, #ffe9e9 0%, var(--red-wash) 38%, #fff 100%); border-top: 1px solid var(--red-edge); }
.chip { border-color: rgba(248, 113, 113, .4); background: rgba(220, 38, 38, .14); }
.badge-dot { border-color: rgba(248, 113, 113, .45); background: rgba(220, 38, 38, .2); }
.window-bar { background: linear-gradient(90deg, #3a0d0e, #1c1c21); }

/* Prices, headings and numbers in red. */
.class-price strong, .price-card .amount, .price, .fact:first-child strong, .result-hero .score { color: var(--red-dark); }
.price-card .amount small, .class-price .was { color: var(--ink-3); }
.panel-head h2 { border-left: 4px solid var(--star); padding-left: 12px; }
.stat-card { border-left: 4px solid var(--star); }
.tabs { border-bottom-color: var(--red-edge); }
.tabs button[aria-selected='true'] { color: var(--red-dark); border-bottom-color: var(--star); }
section:not(.dark-band) .card h3, .step h3, .price-card h3 { color: #7f1d1d; }
.pill.dark { background: var(--red-dark); }
.pill:not(.ok):not(.bad):not(.warn):not(.violet):not(.dark) { background: var(--red-wash); color: #991b1b; box-shadow: inset 0 0 0 1px var(--red-edge); }
.exam-bar { border-top: 4px solid var(--star); border-bottom-color: var(--red-edge); }
.q-card { border-top: 4px solid var(--star); }
.choice:hover { background: var(--red-wash); }
.explanation { border-left-color: var(--star); background: var(--red-wash); }
hr { border: 0; height: 2px; background: var(--red-line); opacity: .5; }
.tilt .window, .window { box-shadow: 0 30px 80px -20px rgba(127, 29, 29, .75), 0 0 0 1px rgba(248, 113, 113, .2); }

/* Secondary buttons are red-outlined on light pages (they stay white on dark ones). */
.btn.secondary { color: var(--red-dark); box-shadow: inset 0 0 0 2px var(--star); }
.btn.secondary:hover { background: var(--red-wash); color: #7f1d1d; }
.hero .btn.secondary, .page-hero .btn.secondary, .dash-head .btn.secondary, .dark-band .btn.secondary, .cta .btn.secondary, .auth-panel .btn.secondary, .site-footer .btn.secondary { color: #fff; box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .55); }
.hero .btn.secondary:hover, .page-hero .btn.secondary:hover, .dash-head .btn.secondary:hover, .dark-band .btn.secondary:hover, .cta .btn.secondary:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.btn.dark { background: linear-gradient(135deg, #3a0d0e, #0a0a0c); }
.btn.light:hover { background: var(--red-wash); }

/* High contrast keeps solid colors. */
html[data-contrast='high'] section.alt { background: var(--paper-2); }
html[data-contrast='high'] .btn:not(.secondary):not(.ghost):not(.link):not(.light) { background: #b91c1c; }

/* Gentle reveal on scroll (only when motion is welcome) */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
  .reveal.in { opacity: 1; transform: none; }
}
@media print { .site-header, .site-footer, .exam-bar { display: none; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; scroll-behavior: auto !important; } }

/* Floating 'next class' card over the hero screenshot */
.float-card { position: absolute; left: -28px; bottom: -34px; max-width: 300px; padding: 18px 20px; box-shadow: var(--shadow-lg); color: var(--ink); }
@media (max-width: 960px) { .float-card { position: static; margin-top: 18px; max-width: none; } }

/* Question exhibits (diagrams, tables, charts) */
.q-exhibit { margin: 0 0 20px; padding: 12px; background: #fff; border: 1px solid var(--line); border-radius: 12px; text-align: center; }
.q-exhibit img { max-height: 420px; width: auto; max-width: 100%; }

/* ---------- Course page ---------- */
.fact-card { padding: 26px 28px; box-shadow: var(--shadow-lg); color: var(--ink); }
.fact { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.fact span { color: var(--ink-3); }
.fact strong { text-align: right; }
.fact:first-child strong { font-size: 1.6rem; letter-spacing: -0.03em; }
.formats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 900px) { .formats { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .formats { grid-template-columns: 1fr; } }
.format { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); }
.format strong { display: block; font-size: 1.6rem; letter-spacing: -0.03em; }
.format span { display: inline-block; margin: 2px 0 10px; font-weight: 600; color: var(--red-dark); }
.format p { margin: 0; color: var(--ink-3); font-size: 0.93rem; }
.class-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 18px; }
@media (max-width: 420px) { .class-cards { grid-template-columns: 1fr; } }
.class-card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 22px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; gap: 14px; transition: box-shadow 0.2s, transform 0.2s; }
.class-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
/* Class length, outlined in shades of red from light (3 days) to deep (6 evenings). The text says the length too. */
[data-days] { --len: var(--line); --len-ink: var(--red-dark); }
[data-days='3'] { --len: #fecaca; --len-ink: #b91c1c; }
[data-days='4'] { --len: #f87171; --len-ink: #b91c1c; }
[data-days='5'] { --len: #dc2626; --len-ink: #991b1b; }
[data-days='6'] { --len: #7f1d1d; --len-ink: #7f1d1d; }
.class-card[data-days] { border: 3px solid var(--len); }
.format[data-days] { border-top: 6px solid var(--len); }
.format[data-days] strong { color: var(--len-ink); }
.class-card[data-days] .class-days { color: var(--len-ink); }
/* Filter and sort controls above the class cards; the length buttons wear the same red shades as the cards. */
.class-tools { display: grid; gap: 14px; margin: 0 0 22px; }
.len-filter { display: flex; flex-wrap: wrap; gap: 8px; }
.len-filter button { display: inline-flex; align-items: center; gap: 6px; font: inherit; font-size: 0.88rem; font-weight: 600; padding: 7px 14px; border-radius: 999px; background: #fff; color: var(--ink-2); border: 3px solid var(--len); cursor: pointer; transition: background 0.15s, box-shadow 0.15s; }
.len-filter button:hover { background: var(--red-wash); }
.len-filter button[aria-pressed='true'] { background: var(--red-wash); color: var(--ink); box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.2); }
.len-filter button[aria-pressed='true']::before { content: '✓'; font-weight: 800; color: var(--len-ink); }
.tool-row { display: flex; flex-wrap: wrap; gap: 12px 16px; align-items: flex-end; }
.tool-row label { display: flex; flex-direction: column; gap: 4px; margin: 0; font-size: 0.82rem; font-weight: 650; color: var(--ink-2); }
.tool-row select { width: auto; min-width: 11em; padding: 8px 12px; font-size: 0.92rem; }
.tool-row .check { flex-direction: row; align-items: center; font-size: 0.92rem; font-weight: 500; padding-bottom: 9px; }
.tool-row .check input { margin-top: 0; }
#f-count { margin: 0; }
.class-card-top { display: flex; justify-content: space-between; gap: 14px; align-items: flex-start; }
.class-card h3 { margin: 4px 0 4px; font-size: 1.15rem; }
.class-days { font-size: 0.76rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--red-dark); }
.promo-box { margin: 0 0 18px; padding: 14px 16px; border: 1px dashed var(--line-2); border-radius: 14px; background: var(--paper-2); }
.promo-form { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; }
.promo-form label { font-weight: 650; font-size: 0.9rem; }
.promo-form input { width: 12em; text-transform: uppercase; letter-spacing: 0.04em; }
#promo-msg:not(:empty) { margin-top: 6px; }
.error-text { color: var(--bad); font-weight: 600; }
.class-price { text-align: right; display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.class-price strong { font-size: 1.5rem; letter-spacing: -0.03em; }
.class-price .was { text-decoration: line-through; color: var(--ink-3); font-size: 0.9rem; }
.sessions { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.sessions li { display: flex; justify-content: space-between; gap: 10px; padding: 8px 0; border-bottom: 1px dashed var(--line); font-size: 0.92rem; }
.sessions li span:first-child { font-weight: 600; }
.sessions li span:last-child { color: var(--ink-3); font-variant-numeric: tabular-nums; }
.class-card-foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: auto; }
.empty-state { text-align: center; padding: 40px 24px; }
.instructor { display: flex; gap: 20px; align-items: flex-start; }
.avatar { width: 84px; height: 84px; border-radius: 50%; object-fit: cover; flex: none; display: grid; place-items: center; background: linear-gradient(135deg, var(--star), #7f1d1d); color: #fff; font-weight: 800; font-size: 1.6rem; letter-spacing: 0.02em; }
.creds { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
@media (max-width: 520px) { .instructor { flex-direction: column; } }

/* ---------- Courses page ---------- */
.course-card { display: grid; grid-template-columns: 1.4fr 1fr; gap: 36px; padding: 34px; }
@media (max-width: 860px) { .course-card { grid-template-columns: 1fr; gap: 24px; padding: 26px; } }
.course-dates { background: var(--paper-2); border-radius: 14px; padding: 20px; }
.light-chips .chip { color: var(--ink-2); border-color: var(--line); background: var(--paper-2); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 28px; align-items: start; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-item { display: flex; gap: 14px; align-items: flex-start; padding: 16px 0; border-bottom: 1px solid var(--line); }
.contact-item:last-child { border-bottom: 0; }
.contact-item .icon { margin: 0; width: 42px; height: 42px; flex: none; }
.contact-item strong { display: block; }

.course-option { border: 2px solid var(--ink); }
.course-option-grid { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; }
.course-option-grid .btn { width: auto; }
@media (max-width: 700px) { .course-option-grid { grid-template-columns: 1fr; } .course-option-grid > div:last-child { text-align: left !important; } }

/* ---------- Admin editors ---------- */
.session-box { border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px 14px; margin: 0 0 18px; }
.session-box legend { font-weight: 700; padding: 0 6px; }
.gen-grid { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 700px) { .gen-grid { grid-template-columns: 1fr 1fr; } }
.session-row { display: grid; grid-template-columns: 52px 1fr 110px auto 110px auto; gap: 8px; align-items: center; margin-bottom: 8px; font-size: 0.9rem; }
.session-row input { padding: 8px 10px; }
@media (max-width: 640px) { .session-row { grid-template-columns: 1fr 1fr; } .session-row strong { grid-column: 1 / -1; } }
.photo-row { display: flex; gap: 16px; align-items: center; margin-bottom: 18px; }
.checkin-toggle { display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 16px; padding: 14px 16px; border-radius: 12px; background: var(--paper-2); border: 1px solid var(--line); }
.checkin-toggle p { margin: 2px 0 0; max-width: 560px; }

/* ---- Guides and sample questions (SEO pages) ---- */
.crumbs { font-size: 0.85rem; color: #9ca0a9; margin-bottom: 14px; }
.crumbs a { color: #d4d6dc; }
.crumbs a:hover { color: #fff; }
.prose .stat-grid { margin: 0 0 28px; }
.toc { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; margin: 0 0 8px; }
.toc ol { margin: 10px 0 0; padding-left: 20px; columns: 2; column-gap: 32px; }
.toc li { margin: 4px 0; break-inside: avoid; }
.prose table { width: 100%; border-collapse: collapse; }
.prose th, .prose td { padding: 10px 14px; border-bottom: 1px solid var(--line); text-align: left; }
.prose th.num, .prose td.num { text-align: right; }
.prose tbody tr:last-child td { border-bottom: 0; }
.cta-panel { display: flex; gap: 24px; align-items: center; justify-content: space-between; flex-wrap: wrap; margin: 40px 0; padding: 28px 32px; border-radius: var(--radius); color: #fff;
  background: radial-gradient(500px 220px at 90% -30%, rgba(220, 38, 38, 0.35), transparent 60%), var(--space); }
.cta-panel > div:first-child { flex: 1 1 360px; }
.cta-panel h2 { margin: 0 0 6px !important; color: #fff; }
.cta-panel p { margin: 0; color: #c4c7ce; }
.sample-q { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; margin: 22px 0; background: #fff; box-shadow: var(--shadow-sm); }
.sample-stem { font-weight: 600; font-size: 1.05rem; margin: 0 0 14px; }
.sample-options { margin: 0 0 14px; padding-left: 26px; }
.sample-options li { margin: 6px 0; padding-left: 4px; }
.sample-answer { border-top: 1px solid var(--line); padding-top: 12px; }
.sample-answer summary { cursor: pointer; font-weight: 650; color: var(--red-dark); }
.sample-answer p { margin: 10px 0 0; color: var(--ink-2); }
@media (max-width: 640px) {
  .toc ol { columns: 1; }
  .cta-panel { padding: 22px 20px; }
  .sample-q { padding: 18px 16px; }
}

/* ---- Shared small helpers ---- */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.nowrap { white-space: nowrap; }
.join-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: stretch; }
/* Form checking: a message under the field, and a red edge on the field. */
.field-error { flex: 0 0 100%; width: 100%; margin-top: 6px; color: var(--bad); font-size: 0.86rem; font-weight: 600; }
.field-error::before { content: '⚠ '; }
input[aria-invalid='true'], select[aria-invalid='true'], textarea[aria-invalid='true'] { border-color: var(--bad); box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.12); }
.check input[aria-invalid='true'] { outline: 2px solid var(--bad); outline-offset: 1px; }
.join-row input { flex: 1; min-width: 0; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 700; }
.join-row.big input { font-size: 1.4rem; padding: 14px 16px; }

/* ---- Dashboard: confirm email and phone ---- */
.ready-panel { border-color: #fde68a; background: linear-gradient(180deg, #fffbeb, #fff 60%); }
.ready-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; counter-reset: step; }
.ready-steps li { counter-increment: step; display: grid; grid-template-columns: 34px 1fr; gap: 4px 14px; align-items: start; }
.ready-steps li::before { content: counter(step); grid-row: span 3; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--ink); color: #fff; font-weight: 700; font-size: 0.9rem; }
.ready-steps li.done::before { content: '✓'; background: var(--ok); }
.ready-steps p { margin: 2px 0 8px; }
.ready-steps .join-row { max-width: 380px; margin-top: 6px; }
.ready-steps .join-row input { text-transform: none; letter-spacing: 0; font-weight: 500; }
.ready-steps .pill { justify-self: start; }

/* ---- Teach: live activities ---- */
.room-card { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; justify-content: space-between; padding: 22px 24px; border-radius: var(--radius); color: #fff;
  background: radial-gradient(500px 220px at 90% -30%, rgba(220, 38, 38, 0.35), transparent 60%), var(--space); }
.room-card .eyebrow { color: #f87171; }
.room-card p { color: #c4c7ce; }
.room-code { font-size: 2.6rem; font-weight: 800; letter-spacing: 0.12em; line-height: 1.1; margin: 4px 0 6px; }
.room-card .btn.light { background: rgba(255, 255, 255, 0.1); color: #fff; border-color: rgba(255, 255, 255, 0.2); }
.launch-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; }
.launch { text-align: left; font: inherit; cursor: pointer; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; display: grid; gap: 6px; box-shadow: var(--shadow-sm); transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s; }
.launch:hover, .launch:focus-visible { border-color: var(--star); transform: translateY(-2px); box-shadow: var(--shadow); }
.launch strong { font-size: 1.05rem; }
.launch span { color: var(--ink-3); font-size: 0.88rem; }
.check-row { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 6px 0 14px; }
fieldset.session-box .check { margin: 6px 0; }
.live-top { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; justify-content: space-between; margin-bottom: 14px; }
.live-stats { display: flex; gap: 22px; align-items: center; }
.live-stats div { display: grid; text-align: center; }
.live-stats strong { font-size: 1.6rem; line-height: 1; }
.live-stats span { font-size: 0.78rem; color: var(--ink-3); }
.live-controls .toggles { display: inline-flex; gap: 14px; margin-left: auto; }
.live-controls .toggles .check { margin: 0; font-size: 0.9rem; }
.live-table table { font-size: 0.9rem; }
.live-table th, .live-table td { padding: 8px 10px; }
.lc-h { padding: 6px 2px !important; text-align: center; min-width: 30px; }
.lc { text-align: center; padding: 6px 2px !important; font-weight: 700; font-size: 0.82rem; min-width: 30px; border-left: 2px solid #fff; }
.lc-ok { background: #dcfce7; color: #166534; }
.lc-bad { background: #fee2e2; color: #991b1b; }
.lc-text { background: #e0e7ff; color: #3730a3; }
.lc-none { background: var(--paper-2); }
.lc-foot { text-align: center; font-size: 0.78rem; font-weight: 700; color: var(--ink-2); }
.live-table tfoot td { border-top: 2px solid var(--line); background: var(--paper-2); }
tr.idle td:first-child { opacity: 0.55; }
.team-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: middle; }
.mini-progress { width: 90px; height: 8px; background: var(--paper-3); border-radius: 99px; overflow: hidden; }
.mini-progress span { display: block; height: 100%; background: var(--ink); border-radius: 99px; transition: width 0.4s; }
.teacher-q { border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; background: var(--paper-2); }
.q-detail { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin: 18px 0; background: #fff; }
.teacher-q .q-detail { margin: 0; }
.q-detail-stem { font-weight: 600; font-size: 1.05rem; white-space: pre-line; }
.dist { display: grid; gap: 8px; margin: 12px 0; }
.dist-row { display: grid; grid-template-columns: minmax(120px, 2fr) 3fr 36px; gap: 12px; align-items: center; font-size: 0.92rem; }
.dist-row.ok .dist-label { color: var(--ok); font-weight: 650; }
.dist-bar { height: 22px; background: var(--paper-3); border-radius: 6px; overflow: hidden; }
.dist-bar span { display: block; height: 100%; background: #94a3b8; transition: width 0.4s; }
.dist-row.ok .dist-bar span { background: #22c55e; }
.dist-n { text-align: right; font-weight: 700; }
.short-answers { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 8px; }
.short-answers li { background: var(--paper-2); border-radius: 10px; padding: 10px 14px; }
.race { display: grid; gap: 10px; margin: 6px 0 22px; }
.race-lane { display: grid; grid-template-columns: 110px 1fr 52px; gap: 12px; align-items: center; }
.race-name { font-weight: 700; }
.race-track { position: relative; height: 40px; background: repeating-linear-gradient(90deg, var(--paper-2) 0 18px, var(--paper-3) 18px 20px); border-radius: 10px; overflow: visible; }
.race-fill { position: absolute; inset: 0 auto 0 0; border-radius: 10px; opacity: 0.25; transition: width 0.6s; }
.race-rocket { position: absolute; top: 3px; transition: left 0.6s; transform: rotate(45deg); }
.race-pct { text-align: right; font-weight: 700; }
.small-race .race-track { height: 14px; }
.small-race .race-fill { opacity: 0.9; }
.small-race .race-lane { grid-template-columns: 70px 1fr 42px; font-size: 0.85rem; }

/* Projector view: big type, no page chrome, for showing results on the classroom screen. */
body.projector .site-header, body.projector .site-footer, body.projector .teach-head, body.projector .tabs, body.projector .no-projector, body.projector .local-banner { display: none !important; }
body.projector .dash-body { margin-top: 0; max-width: none; padding: 16px 24px; }
body.projector .panel { border: 0; box-shadow: none; padding: 8px; }
body.projector .live-title, body.projector .live-top h2 { font-size: 2rem; }
body.projector .q-detail-stem { font-size: 1.5rem; }
body.projector .dist-row { font-size: 1.2rem; grid-template-columns: minmax(160px, 2fr) 4fr 50px; }
body.projector .dist-bar { height: 34px; }
body.projector .race-track { height: 64px; }
body.projector .race-rocket svg { width: 56px; height: 56px; }
body.projector .race-lane { grid-template-columns: 160px 1fr 70px; font-size: 1.3rem; }
.projector-bar { display: flex; justify-content: space-between; align-items: center; gap: 16px; background: var(--space); color: #fff; padding: 12px 18px; border-radius: 12px; margin-bottom: 18px; font-size: 1.2rem; }
.projector-bar strong { color: #fca5a5; letter-spacing: 0.06em; }

/* ---- Teach: practice monitor ---- */
.status-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 7px; background: var(--line-2); vertical-align: middle; }
.status-dot.online { background: #22c55e; box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6); animation: ping 1.6s infinite; }
.status-dot.away { background: #f59e0b; }
@keyframes ping { 70% { box-shadow: 0 0 0 7px rgba(34, 197, 94, 0); } 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); } }
@media (prefers-reduced-motion: reduce) { .status-dot.online { animation: none; } }
.monitor td { vertical-align: middle; }
.good { color: var(--ok); font-weight: 700; }
.low { color: var(--bad); font-weight: 700; }
.strip { display: grid; grid-template-columns: repeat(20, 9px); gap: 2px; }
.strip span { width: 9px; height: 9px; border-radius: 2px; background: var(--paper-3); }
.strip span.c { background: #22c55e; }
.strip span.w { background: #ef4444; }
.strip span.cur { outline: 2px solid var(--ink); outline-offset: 1px; }

/* ---- Teach: attendance ---- */
.attendance-class { display: grid; gap: 4px; padding: 18px; }
.day-tabs { display: flex; gap: 6px; overflow-x: auto; margin-bottom: 16px; padding-bottom: 4px; }
.day-tabs a { display: grid; padding: 8px 14px; border: 1px solid var(--line); border-radius: 10px; color: var(--ink-2); font-weight: 650; text-decoration: none; white-space: nowrap; font-size: 0.92rem; }
.day-tabs a span { font-weight: 500; font-size: 0.78rem; color: var(--ink-3); }
.day-tabs a[aria-selected='true'] { border-color: var(--ink); background: var(--ink); color: #fff; }
.day-tabs a[aria-selected='true'] span { color: #c4c7ce; }
table.att td { vertical-align: middle; }
table.att input[type='time'] { width: 150px; }
table.att input[data-k='note'] { min-width: 140px; }
.segmented { display: inline-flex; border: 1px solid var(--line-2); border-radius: 10px; overflow: hidden; }
.seg { font: inherit; font-size: 0.85rem; font-weight: 600; border: 0; background: #fff; padding: 7px 11px; cursor: pointer; color: var(--ink-2); border-right: 1px solid var(--line-2); }
.seg:last-child { border-right: 0; }
.seg.on[data-status='present'] { background: var(--ok); color: #fff; }
.seg.on[data-status='absent'] { background: var(--bad); color: #fff; }
.seg.on[data-status='excused'] { background: #475569; color: #fff; }
.seg.clear { color: var(--ink-3); }
.time-cell { display: flex; gap: 6px; align-items: center; }
.att-ok { color: var(--ok); font-weight: 700; }
.att-warn { color: var(--warn); font-weight: 700; font-size: 0.85rem; }
.att-bad { color: var(--bad); font-weight: 700; }

/* ---- Student: live activity ---- */
.live-wrap { padding: 40px 20px 80px; }
.live-card { padding: 28px; }
.live-card.center, .live-card .center { text-align: center; }
.live-head { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.live-title { margin: 0 0 14px; }
.team-chip { color: #fff; font-weight: 700; padding: 4px 12px; border-radius: 99px; font-size: 0.85rem; }
.live-q { margin: 10px 0 16px; }
.live-stem { font-size: 1.15rem; font-weight: 600; white-space: pre-line; }
.live-options { display: grid; gap: 10px; margin-top: 12px; }
.live-opt { display: flex; gap: 12px; align-items: center; border: 2px solid var(--line); border-radius: 14px; padding: 14px 16px; cursor: pointer; background: #fff; transition: border-color 0.15s, background 0.15s; }
.live-opt input { position: absolute; opacity: 0; pointer-events: none; }
.live-opt:hover { border-color: var(--line-2); }
.live-opt:focus-within { outline: 3px solid rgba(220, 38, 38, 0.35); outline-offset: 2px; }
.live-opt.on { border-color: var(--ink); background: var(--paper-2); }
.live-opt.right { border-color: #22c55e; background: #f0fdf4; }
.live-opt.wrong { border-color: #ef4444; background: #fef2f2; }
.live-opt .letter { flex: none; width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; font-weight: 800; background: var(--paper-3); }
.live-opt.on .letter { background: var(--ink); color: #fff; }
.live-opt.right .letter { background: #22c55e; color: #fff; }
.live-q textarea { width: 100%; }
.big-score { font-size: 3rem; font-weight: 800; margin: 10px 0; display: grid; }
.big-score span { font-size: 1.1rem; color: var(--ink-3); font-weight: 600; }
.pulse { width: 18px; height: 18px; border-radius: 50%; background: var(--star); margin: 6px auto 16px; animation: ping-red 1.6s infinite; }
@keyframes ping-red { 0% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.5); } 70% { box-shadow: 0 0 0 16px rgba(220, 38, 38, 0); } 100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0); } }
@media (prefers-reduced-motion: reduce) { .pulse { animation: none; } }
.last-result { background: var(--paper-2); border-radius: 12px; padding: 14px; margin: 16px 0; }
.live-nav { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.live-nav a { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--line-2); border-radius: 8px; font-weight: 700; font-size: 0.85rem; text-decoration: none; color: var(--ink-2); }
.live-nav a.done { background: var(--ink); color: #fff; border-color: var(--ink); }
.live-block { border-top: 1px solid var(--line); padding-top: 16px; margin-top: 16px; scroll-margin-top: 90px; }
.live-review { border-left: 4px solid var(--line-2); padding: 6px 12px; margin: 10px 0; }
.live-review.ok { border-color: #22c55e; }
.live-review.bad { border-color: #ef4444; }

@media (max-width: 720px) {
  .live-controls .toggles { margin-left: 0; }
  .room-code { font-size: 2rem; }
  .dist-row { grid-template-columns: 1fr 1.4fr 30px; }
  .race-lane { grid-template-columns: 70px 1fr 42px; }
  .live-card { padding: 20px 16px; }
  table.att input[type='time'] { width: 132px; }
}

.filter-label { display: flex; align-items: center; gap: 8px; min-width: 0; max-width: 100%; }
.filter-label select { min-width: 0; max-width: 100%; flex: 1; }
.live-q:focus, .live-card h1:focus, .live-card h2:focus { outline: none; }

/* Learning-objective drills (dashboard) */
.drill-card { grid-column: 1 / -1; }
.drill-suggest { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.drill-suggest .low { margin-left: 4px; }
.drill-pick select { flex: 1; min-width: 0; text-transform: none; letter-spacing: 0; font-weight: 500; }
@media (max-width: 560px) { .drill-pick { flex-direction: column; } .drill-pick .btn { align-self: flex-start; } }

/* Readiness score (dashboard) */
.readiness { display: flex; gap: 18px; align-items: center; margin-bottom: 16px; }
.readiness p { margin: 4px 0 0; }
.gauge { --p: 0; --c: var(--ok); flex: none; width: 104px; height: 104px; border-radius: 50%; display: grid; place-content: center; text-align: center;
  background: radial-gradient(closest-side, #fff 78%, transparent 79% 100%), conic-gradient(var(--c) calc(var(--p) * 1%), var(--paper-3) 0); }
.gauge span { font-size: 1.6rem; font-weight: 800; line-height: 1; }
.gauge small { font-size: 0.7rem; color: var(--ink-3); }
.readiness.ready strong { color: var(--ok); }
.focus-list { list-style: none; margin: 0 0 18px; padding: 0; display: grid; gap: 8px; }
.focus-list li { display: flex; gap: 10px; align-items: center; justify-content: space-between; font-size: 0.88rem; border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; }
/* Study plan (dashboard) */
.study-panel .panel-head { align-items: center; }
.countdown { font-size: 0.95rem; }
.countdown strong { font-size: 1.5rem; color: var(--star); margin-right: 2px; }
.exam-date { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: -6px 0 16px; font-size: 0.9rem; }
.exam-date label { font-weight: 600; }
.exam-date input { width: auto; }
.study-panel h3 { margin: 0 0 10px; font-size: 1.05rem; }
.plan-tasks { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.plan-tasks li { display: grid; grid-template-columns: 26px 1fr auto; gap: 10px; align-items: center; border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; font-size: 0.93rem; }
.plan-tasks .tick { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--line-2); display: grid; place-items: center; font-size: 0.8rem; font-weight: 800; color: #fff; }
.plan-tasks li.done { background: var(--ok-bg); border-color: #bbf7d0; }
.plan-tasks li.done .tick { background: var(--ok); border-color: var(--ok); }
.plan-tasks li .sr-only:empty { display: none; }
.plan-later { margin-top: 14px; }
.plan-later summary { cursor: pointer; font-weight: 650; }
.plan-later ol { margin: 10px 0 0; padding-left: 0; list-style: none; display: grid; gap: 6px; font-size: 0.9rem; }
@media (max-width: 560px) { .plan-tasks li { grid-template-columns: 22px 1fr; } .plan-tasks li .btn { grid-column: 2; justify-self: start; } }
/* Study mode (exam screen) */
.study-check { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: -6px 0 18px; }
.study-feedback { margin: -6px 0 18px; }
.study-feedback:focus { outline: none; }
.choice.right { border-color: #22c55e; background: #f0fdf4; }
.choice.right .letter { color: #15803d; }
.choice.wrong { border-color: #ef4444; background: #fef2f2; }
.palette-grid button.right, .palette-grid button.answered.right { background: #dcfce7; border-color: #22c55e; color: #166534; }
.palette-grid button.wrong, .palette-grid button.answered.wrong { background: #fee2e2; border-color: #ef4444; color: #991b1b; }
.toggles-row { display: inline-flex; flex-wrap: wrap; gap: 16px; }
/* Pacing coach */
.pace { font-size: 0.82rem; font-weight: 700; padding: 4px 10px; border-radius: 99px; margin-right: 10px; }
.pace:empty { display: none; }
.pace.ok { background: var(--ok-bg); color: var(--ok); }
.pace.warn { background: var(--warn-bg); color: var(--warn); }
.pace.bad { background: var(--bad-bg); color: var(--bad); }
.pacing-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 6px 0 12px; }
.pacing-stats div { display: grid; background: var(--paper-2); border-radius: 12px; padding: 12px; }
.pacing-stats strong { font-size: 1.4rem; }
.pacing-stats span { font-size: 0.8rem; color: var(--ink-3); }
/* Report a problem with a question */
.report-row { margin-top: 10px; }
.report-row .btn.link { font-size: 0.85rem; color: var(--ink-3); }
.report-form { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; background: var(--paper-2); display: grid; gap: 10px; }
.report-form fieldset { border: 0; padding: 0; margin: 0; display: grid; gap: 4px; }
.report-form legend { font-weight: 650; margin-bottom: 6px; }
.report-form label { font-size: 0.9rem; }
.report-form textarea { width: 100%; margin-top: 4px; }
.report-done { color: var(--ok); font-weight: 600; font-size: 0.9rem; margin: 10px 0 0; }
/* Admin: question reports */
.report-card { margin-bottom: 16px; padding: 20px; }
.report-quote { margin: 0 0 12px; padding: 10px 14px; border-left: 4px solid var(--star); background: var(--red-tint); border-radius: 0 10px 10px 0; }
.q-admin-text { font-weight: 600; white-space: pre-line; margin-bottom: 10px; }
.q-admin-opts { margin: 0 0 10px; padding-left: 24px; }
.q-admin-opts li.ok { color: var(--ok); font-weight: 650; }
/* Spaced review (dashboard) */
.review-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 14px; }
.review-stats div { display: grid; text-align: center; background: var(--paper-2); border-radius: 12px; padding: 10px 6px; }
.review-stats strong { font-size: 1.4rem; }
.review-stats span { font-size: 0.75rem; color: var(--ink-3); }
/* CTFL glossary and flashcards */
.glossary { padding: 32px 24px 88px; max-width: 900px; }
.glossary-tools { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 14px; }
.glossary-tools input[type='search'] { flex: 1 1 260px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font: inherit; font-size: 0.85rem; font-weight: 650; border: 1px solid var(--line-2); background: #fff; border-radius: 99px; padding: 6px 12px; cursor: pointer; color: var(--ink-2); }
.chip.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.az { display: flex; flex-wrap: wrap; gap: 4px; margin: 0 0 18px; }
.az a { min-width: 30px; text-align: center; padding: 4px 6px; border-radius: 6px; font-weight: 700; text-decoration: none; background: var(--paper-2); color: var(--ink-2); }
.az a:hover { background: var(--ink); color: #fff; }
section.letter h2 { font-size: 1.5rem; border-bottom: 2px solid var(--star); padding-bottom: 4px; margin: 28px 0 10px; }
.term { padding: 14px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 90px; }
.term h3 { font-size: 1.1rem; margin: 0 0 6px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.term h3 a { color: var(--ink); text-decoration: none; }
.term p { margin: 4px 0; }
.term .plain { color: var(--ink-2); }
.term .example { color: var(--ink-2); font-size: 0.95rem; }
.term:target { background: var(--warn-bg); border-radius: 10px; padding: 14px; }
#flashcards { margin: 10px 0 30px; }
.fc-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; font-size: 0.9rem; color: var(--ink-3); }
.fc-card { width: 100%; min-height: 260px; display: grid; place-content: center; gap: 12px; text-align: center; padding: 32px 24px; font: inherit; color: var(--ink); cursor: pointer;
  background: #fff; border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); }
.fc-card.flipped { background: var(--paper-2); }
.fc-term { font-size: 2rem; font-weight: 800; letter-spacing: -0.02em; }
.fc-hint { font-size: 0.85rem; color: var(--ink-3); }
.fc-term-small { font-weight: 800; color: var(--star); }
.fc-def { font-size: 1.15rem; max-width: 620px; }
.fc-plain, .fc-ex { color: var(--ink-2); max-width: 620px; font-size: 0.95rem; }
.fc-actions { display: flex; gap: 12px; justify-content: center; margin-top: 16px; }
.fc-actions kbd { font-size: 0.7rem; opacity: 0.7; margin-left: 4px; }
.fc-done { text-align: center; padding: 40px 0; }
/* Accessibility settings (footer) */
.site-footer .a11y-open { color: #c4c7ce; text-decoration: underline; padding: 0; margin-bottom: 10px; display: block; font-size: 0.85rem; }
.a11y-dlg { max-width: 460px; width: calc(100% - 32px); border: 0; border-radius: 18px; padding: 24px; box-shadow: var(--shadow); }
.a11y-dlg::backdrop { background: rgba(10, 10, 12, 0.5); }
.a11y-dlg fieldset { border: 0; padding: 0; margin: 0 0 14px; }
.a11y-dlg legend { font-weight: 650; margin-bottom: 6px; }
.seg-row { display: flex; flex-wrap: wrap; gap: 6px; }
.seg-opt input { position: absolute; opacity: 0; }
.seg-opt span { display: inline-block; padding: 7px 12px; border: 1px solid var(--line-2); border-radius: 99px; cursor: pointer; font-size: 0.9rem; }
.seg-opt input:checked + span { background: var(--ink); color: #fff; border-color: var(--ink); }
.seg-opt input:focus-visible + span { outline: 3px solid rgba(220, 38, 38, 0.45); outline-offset: 2px; }
html[data-text='lg'] { font-size: 112.5%; }
html[data-text='xl'] { font-size: 125%; }
html[data-links='underline'] a { text-decoration: underline !important; }
html[data-motion='reduce'] *, html[data-motion='reduce'] *::before, html[data-motion='reduce'] *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
html[data-contrast='high'] { --ink: #000; --ink-2: #111; --ink-3: #2b2b2b; --line: #6b6b6b; --line-2: #3f3f3f; --paper-2: #fff; --paper-3: #e5e5e5; --star: #b91c1c; }
html[data-contrast='high'] main .muted, html[data-contrast='high'] main .hint, html[data-contrast='high'] main .small, html[data-contrast='high'] dialog .muted { color: #1a1a1a !important; }
html[data-contrast='high'] main .page-hero .muted, html[data-contrast='high'] main .dash-head .muted, html[data-contrast='high'] main .cta-panel .muted { color: #fff !important; }
html[data-contrast='high'] .site-footer, html[data-contrast='high'] .site-footer a, html[data-contrast='high'] .page-hero p { color: #fff; }
html[data-contrast='high'] :focus-visible { outline: 3px solid #000 !important; outline-offset: 2px; }
/* Offline page (installable app) */
.offline-page { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: var(--paper-2); }
.offline-card { max-width: 480px; text-align: center; padding: 36px 28px; }

.cal-link { margin: 10px 0 0; }

/* Class portal */
.join-panel .btn { margin: 4px 0 8px; }
.posts { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.post { border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.post.pinned { border-color: var(--star); background: var(--red-tint); }
.post-head { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.post-actions { margin-left: auto; font-size: 0.85rem; }
.post-body { white-space: pre-line; margin: 8px 0 0; }
.post p { margin: 6px 0 0; }
.portal-days { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.portal-days li { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; padding: 8px 10px; border-radius: 10px; border: 1px solid var(--line); font-size: 0.92rem; }
.portal-days li span { color: var(--ink-3); }
.portal-days li.today { border-color: var(--ok); background: var(--ok-bg); }
.portal-days li.past { opacity: 0.6; }
/* Pre-class check */
.check-card { border-color: #bfdbfe; background: linear-gradient(180deg, #eff6ff, #fff 70%); }
.diag-list { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 4px; font-size: 0.9rem; }
.diag-list li { display: flex; justify-content: space-between; border-bottom: 1px solid var(--line); padding: 4px 0; }

/* Certificate of completion */
.cert-wrap { padding: 40px 20px 80px; max-width: 1000px; }
.cert-verify { max-width: 520px; margin: 0 auto; }
.certificate { background: #fff; border: 2px solid var(--ink); outline: 6px double var(--star); outline-offset: 6px; border-radius: 6px; padding: 48px 56px; text-align: center; margin: 24px auto; max-width: 900px; aspect-ratio: 1.414; display: flex; flex-direction: column; justify-content: center; }
.certificate.revoked { opacity: 0.5; }
.cert-top { display: flex; align-items: center; justify-content: center; gap: 10px; }
.cert-brand { font-size: 1.6rem; font-weight: 800; letter-spacing: 0.04em; }
.cert-brand .x { color: var(--star); }
.cert-kicker { text-transform: uppercase; letter-spacing: 0.3em; font-weight: 700; color: var(--star); margin: 18px 0 10px; font-size: 0.95rem; }
.cert-line { margin: 4px 0; color: var(--ink-2); font-style: italic; }
.cert-name { font-size: 2.6rem; margin: 8px 0 6px; font-family: Georgia, 'Times New Roman', serif; }
.cert-course { font-size: 1.5rem; margin: 6px 0; }
.cert-detail { color: var(--ink-2); margin: 6px 0 26px; }
.cert-foot { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: auto; }
.cert-foot div { display: grid; border-top: 1px solid var(--ink); padding-top: 6px; }
.cert-sign { font-weight: 700; }
.cert-role { font-size: 0.8rem; color: var(--ink-3); }
.cert-note { font-size: 0.72rem; color: var(--ink-3); margin: 18px 0 0; }
@media (max-width: 700px) { .certificate { padding: 28px 18px; aspect-ratio: auto; } .cert-name { font-size: 1.8rem; } .cert-foot { grid-template-columns: 1fr; } }
@media print {
  @page { size: landscape; margin: 12mm; }
  .site-header, .site-footer, .local-banner, .no-print, #cert-msg { display: none !important; }
  .cert-wrap { padding: 0; max-width: none; }
  .certificate { margin: 0 auto; max-width: none; height: 170mm; aspect-ratio: auto; }
}
.panel-inset { border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; margin-top: 20px; }
.cert-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.cert-list li { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; border-bottom: 1px solid var(--line); padding: 6px 0; }

/* ---- Reviews ---- */
.stars { --pct: 0%; display: inline-block; position: relative; font-size: 1.05rem; letter-spacing: 2px; line-height: 1; color: #d9d4d4; white-space: nowrap; }
.stars::before { content: '★★★★★'; position: absolute; inset: 0; width: var(--pct); overflow: hidden; color: var(--star); }
.rating-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 4px; text-decoration: none; }
.rating-link:empty { display: none; }
.rating-num { font-weight: 700; }
.reviews > h2 { margin-bottom: 14px; }
.review-summary { display: flex; flex-wrap: wrap; gap: 26px; align-items: center; margin-bottom: 18px; }
.review-avg { display: grid; gap: 4px; justify-items: start; }
.review-avg strong { font-size: 2.6rem; line-height: 1; color: var(--red-dark); }
.hist { flex: 1 1 240px; display: grid; gap: 5px; max-width: 420px; }
.hist-row { display: grid; grid-template-columns: 62px 1fr 28px; gap: 10px; align-items: center; font-size: 0.85rem; color: var(--ink-3); }
.hist-track { height: 8px; border-radius: 99px; background: #eee9e9; overflow: hidden; }
.hist-fill { height: 100%; background: var(--star); border-radius: 99px; }
.review-list { display: grid; gap: 14px; margin: 18px 0; }
.review { border: 1px solid var(--line, #e6e0e0); border-left: 4px solid var(--star); border-radius: 12px; padding: 16px 18px; background: #fff; }
.review-top { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.review-top h3 { margin: 0; font-size: 1.05rem; }
.review-body { margin: 8px 0; white-space: pre-line; }
.review-by { font-size: 0.88rem; color: var(--ink-3); margin-top: 6px; }
.review-reply { margin-top: 12px; padding: 10px 14px; background: #faf5f5; border-radius: 10px; font-size: 0.93rem; }
.review-reply p { margin: 4px 0 0; }
.review-write { margin-top: 10px; }
.review-write > summary { cursor: pointer; font-weight: 700; color: var(--red-dark); }
.review-form { margin-top: 14px; display: grid; gap: 4px; max-width: 560px; }
.star-input { border: 0; padding: 0; margin: 0; }
.star-input legend { font-weight: 600; margin-bottom: 6px; }
.star-row { display: inline-flex; flex-direction: row-reverse; gap: 2px; }
.star-row input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.star-row label { font-size: 2rem; line-height: 1; color: #d9d4d4; cursor: pointer; padding: 0 2px; }
.star-row input:checked ~ label, .star-row label:hover, .star-row label:hover ~ label { color: var(--star); }
.star-row input:focus-visible + label { outline: 3px solid var(--star); outline-offset: 2px; border-radius: 6px; }
.review-signin { margin: 8px 0 0; }

/* ---- FAQ and blog ---- */
.faq-wrap { max-width: 860px; }
.faq-group h2 { margin: 28px 0 10px; font-size: 1.2rem; }
.faq { border: 1px solid var(--line); border-left: 4px solid var(--star); border-radius: 12px; background: #fff; margin-bottom: 10px; }
.faq > summary { cursor: pointer; padding: 14px 18px; font-weight: 700; list-style: none; }
.faq > summary::-webkit-details-marker { display: none; }
.faq > summary::after { content: '+'; float: right; color: var(--red-dark); font-size: 1.3rem; line-height: 1; }
.faq[open] > summary::after { content: '–'; }
.faq-answer { padding: 0 18px 14px; }
.faq-answer p:first-child { margin-top: 0; }
.mine-q { border-top: 1px solid var(--line); padding-top: 10px; }
.mine-a { white-space: pre-line; background: #faf5f5; border-radius: 10px; padding: 10px 14px; }
.post-list { display: grid; gap: 16px; max-width: 820px; }
.post-card { border: 1px solid var(--line); border-left: 4px solid var(--star); border-radius: 14px; padding: 18px 20px; background: #fff; }
.post-card h2 { font-size: 1.25rem; margin: 0 0 4px; }
.post-card .more { font-weight: 700; }
.prose { max-width: 760px; }
.prose h2 { margin-top: 1.6em; }
.prose h3 { margin-top: 1.3em; }
.prose p, .prose li { line-height: 1.7; }

/* ---- Study schedule ---- */
.sched-add { display: grid; grid-template-columns: 170px 1fr 1fr auto; gap: 10px; align-items: end; margin-bottom: 14px; }
@media (max-width: 760px) { .sched-add { grid-template-columns: 1fr; } }
.sched-list { list-style: none; margin: 0 0 14px; padding: 0; display: grid; gap: 6px; }
.sched-item { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; justify-content: space-between; border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; background: #fff; }
.sched-item.done { opacity: 0.6; text-decoration: line-through; }
.sched-item.late { border-left: 4px solid var(--star); }
.sched-check { display: flex; gap: 10px; align-items: center; flex: 1 1 240px; }
.sched-tools { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 12px; }
.sched-tools > summary { cursor: pointer; font-weight: 700; }
.day-pick { display: flex; flex-wrap: wrap; gap: 8px 14px; }

/* ---- Study room ---- */
.room { display: grid; grid-template-columns: 270px 1fr; gap: 20px; align-items: start; }
@media (max-width: 860px) { .room { grid-template-columns: 1fr; } }
.room-side, .room-main { border: 1px solid var(--line); border-radius: 16px; background: #fff; padding: 16px; }
.room-list, .here-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.room-link { display: flex; justify-content: space-between; gap: 8px; padding: 7px 10px; border-radius: 8px; text-decoration: none; color: inherit; font-size: 0.93rem; }
.room-link:hover { background: #faf1f1; }
.room-link.on { background: var(--star); color: #fff; font-weight: 700; }
.room-n { background: #fde8e8; color: var(--red-dark); border-radius: 99px; padding: 0 8px; font-size: 0.8rem; font-weight: 700; }
.room-link.on .room-n { background: #fff; }
.here-list li { font-size: 0.9rem; display: flex; gap: 6px; align-items: baseline; flex-wrap: wrap; }
.room-rules { background: #faf5f5; border-radius: 10px; padding: 8px 12px; margin: 8px 0; }
.chat-log { height: 460px; overflow-y: auto; border: 1px solid var(--line); border-radius: 12px; padding: 12px; display: flex; flex-direction: column; gap: 10px; background: #fcfbfb; }
.chat-log[data-empty]::before { content: attr(data-empty); color: var(--ink-3); margin: auto; }
.day-divider { text-align: center; font-size: 0.78rem; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.06em; }
.msg { max-width: 85%; border: 1px solid var(--line); border-radius: 12px; padding: 8px 12px; background: #fff; }
.msg.mine { align-self: flex-end; background: #fdf0f0; border-color: #f4cccc; }
.msg-head { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: baseline; font-size: 0.86rem; }
.msg-body { margin-top: 2px; overflow-wrap: anywhere; }
.badge { display: inline-block; border-radius: 99px; padding: 0 8px; font-size: 0.72rem; font-weight: 700; background: #eee; color: #444; }
.badge.current { background: #fde8e8; color: var(--red-dark); }
.badge.alumni { background: #e6f4ea; color: #14532d; }
.badge.future { background: #eef2ff; color: #3730a3; }
.badge.host { background: var(--star); color: #fff; }
.here-list .badge { width: 10px; height: 10px; padding: 0; align-self: center; }
.chat-form { display: flex; gap: 10px; margin-top: 10px; align-items: end; }
.chat-form textarea { flex: 1; resize: vertical; min-height: 54px; }
.focus-time { font-size: 2rem; font-weight: 800; font-variant-numeric: tabular-nums; color: var(--red-dark); }
.room-side h2.h4 { font-size: 1rem; margin: 0 0 8px; }
.sched-item .sched-check { display: flex; gap: 10px; align-items: center; margin: 0; font-weight: 400; width: auto; }
.sched-item .sched-check input, .day-pick input { width: auto; margin: 0; flex: none; }
.sched-item > span.muted { margin-left: auto; }
.day-pick label { display: inline-flex; gap: 6px; align-items: center; font-weight: 400; margin: 0; }

/* ---- Practice tools ---- */
.tool-wrap { max-width: 960px; }
.tool-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.tool-card { padding: 22px; }
.tool-problem figure, .tool-problem svg { max-width: 100%; }
.tool-inputs { margin: 14px 0; display: grid; gap: 10px; }
.tool-field label { display: block; font-weight: 600; margin-bottom: 4px; }
.tool-field select, .tool-field input { max-width: 420px; }
.tool-grid { overflow-x: auto; }
.tool-grid table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
.tool-grid th, .tool-grid td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: middle; }
.tool-grid thead th { background: var(--paper-2); }
.tool-grid tbody th { font-weight: 500; min-width: 220px; }
.tool-feedback:empty { display: none; }
.tool-feedback { margin-top: 14px; border-radius: 12px; padding: 12px 16px; border: 1px solid var(--line); }
.tool-feedback.ok { background: var(--ok-bg); border-color: #bbf7d0; }
.tool-feedback.bad { background: var(--bad-bg); border-color: #fecaca; }
.tool-feedback p { margin: 4px 0; }
.prose-tool { max-width: 760px; margin-top: 28px; }
.prose-tool h2 { margin-top: 1.4em; font-size: 1.3rem; }
.prose-tool p, .prose-tool li { line-height: 1.7; }
.tool-hub { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.tool-link { text-decoration: none; color: inherit; display: flex; flex-direction: column; gap: 8px; border-left: 4px solid var(--star); transition: transform 0.15s, box-shadow 0.15s; }
.tool-link:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.tool-link .btn { align-self: flex-start; margin-top: auto; }

.after-part { margin-bottom: 18px; }

/* ---- Roadmap, cost, corporate, assistant ---- */
.road { display: grid; gap: 12px; }
.road-step { border-left: 4px solid var(--star); }
.road-step p { margin: 4px 0 0; }
.interest { margin-top: 16px; }
.interest-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; margin-top: 10px; }
.interest-row .field { flex: 1 1 220px; margin: 0; }
.cost-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-top: 16px; }
.cost-card { border-top: 4px solid var(--star); }
.cost-total { font-size: 2rem; font-weight: 800; color: var(--red-dark); margin: 6px 0 10px; }
.corp-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 24px; align-items: start; }
@media (max-width: 860px) { .corp-grid { grid-template-columns: 1fr; } }
.est-out { background: var(--paper-2); border-radius: 12px; padding: 14px 16px; margin: 12px 0; }
.est-total { font-size: 2.1rem; font-weight: 800; color: var(--red-dark); }
.asst-log { max-height: 360px; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; margin: 12px 0; }
.asst-msg { border: 1px solid var(--line); border-radius: 12px; padding: 10px 14px; background: #fff; max-width: 92%; }
.asst-msg.user { align-self: flex-end; background: #fdf0f0; border-color: #f4cccc; }
.asst-msg.error { border-color: #fecaca; background: var(--bad-bg); }
.sprint-banner { margin: 8px 0; }
@media print {
  .site-header, .site-footer, .no-print, .page-hero + .no-print, .skip { display: none !important; }
  body { background: #fff; color: #000; }
  .page-hero { background: none !important; color: #000 !important; padding: 0 0 12px; }
  .page-hero h1, .page-hero p { color: #000 !important; }
  .prose-tool { max-width: none; }
  a { color: #000; text-decoration: none; }
}

/* ---- Schedule ---- */
.cal-title { min-width: 150px; text-align: center; }
.cal-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); margin-top: 12px; }
.cal-head { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-3); padding: 6px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper-2); }
.cal-cell { min-height: 96px; padding: 4px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.cal-cell.empty { background: var(--paper-2); }
.cal-day { font-size: 0.8rem; font-weight: 700; color: var(--ink-3); }
.cal-chip { display: block; font-size: 0.74rem; line-height: 1.25; padding: 2px 5px; border-radius: 6px; border-left: 3px solid var(--c); background: color-mix(in srgb, var(--c) 12%, #fff); color: var(--ink); text-decoration: none; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cal-chip.unassigned { border-left-style: dashed; background: #f3f4f6; }
.cal-off { font-size: 0.7rem; color: var(--warn); }
.cal-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; vertical-align: middle; }
.inst-sched > summary { cursor: pointer; }
.inst-editor { margin-top: 12px; }
.avail-days td, .avail-days th { padding: 3px 8px 3px 0; text-align: left; font-weight: 400; }
.avail-days input[type="time"] { width: auto; }
.off-list { margin: 0 0 8px; padding-left: 18px; }
.off-form { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; }
.off-form .field { margin: 0; }
.cal-box p { margin-top: 0; }
@media (max-width: 700px) { .cal-cell { min-height: 64px; } .cal-chip { white-space: normal; } }

.day-times { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 10px 18px; }
.day-time { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.day-time label { display: inline-flex; gap: 6px; align-items: center; font-weight: 400; margin: 0; min-width: 64px; }
.day-time input[type=checkbox] { width: auto; margin: 0; flex: none; }
.day-time select { width: auto; flex: 1; min-width: 0; }