/* ============================================
   ABSN Summer — Shared Hub Styles
   Used by master hub, course pickers, and exam hubs.
   ============================================ */
:root {
  --bg: #f6f4ef;
  --surface: #ffffff;
  --surface2: #fbfaf7;
  --border: #e4e0d6;
  --border-strong: #d4cfc2;
  --ink: #232020;
  --ink-soft: #4f4a43;
  --ink-mute: #766f65;
  --accent: #b5482e;
  --accent-deep: #9c3c25;
  --accent-soft: #f6e9e4;
  --gold: #876628;
  --gold-soft: #f6ecd6;
  --teal: #2f6f6b;
  --teal-soft: #dcebe9;
  --correct: #2f7d4f;
  --correct-soft: #eaf6ed;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
  border-radius: 4px;
}
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'DM Sans', sans-serif;
  min-height: 100vh;
  font-size: 17px;
  line-height: 1.5;
  overflow-x: hidden;
}
.accent-band { height: 6px; background: linear-gradient(90deg, var(--accent) 0%, var(--gold) 50%, var(--teal) 100%); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 1.2rem 5rem; }

/* Hero */
.hero { padding: 2.2rem 0 2.5rem; position: relative; }
.hero-inner { position: relative; z-index: 2; }
.hub-back {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--ink-soft); text-decoration: none;
  margin-bottom: 1.8rem;
  padding: 7px 14px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface); transition: all 0.15s;
}
.hub-back:hover { border-color: var(--accent); color: var(--accent); transform: translateX(-2px); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent);
  background: var(--accent-soft); padding: 5px 13px; border-radius: 6px;
  margin-bottom: 1.4rem;
  opacity: 0; transform: translateY(12px); animation: rise 0.6s ease 0.05s forwards;
}
.eyebrow::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); animation: pulse 2s ease-in-out infinite; }

h1.hero-title {
  font-family: 'Fraunces', serif; font-size: clamp(2.8rem, 8vw, 4.6rem);
  font-weight: 600; line-height: 0.98; letter-spacing: -0.02em;
  color: var(--ink); margin-bottom: 0.4rem;
  opacity: 0; transform: translateY(16px); animation: rise 0.7s ease 0.15s forwards;
}
h1.hero-title em { font-style: italic; font-weight: 500; color: var(--accent); display: block; }

/* Countdown card */
.countdown-card {
  margin-top: 2rem; display: flex; align-items: center; gap: 1.4rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
  padding: 1.3rem 1.6rem; box-shadow: 0 4px 16px rgba(0,0,0,0.04);
  opacity: 0; transform: translateY(16px); animation: rise 0.7s ease 0.4s forwards; flex-wrap: wrap;
}
.countdown-num { font-family: 'Fraunces', serif; font-size: 3.6rem; font-weight: 600; color: var(--accent); line-height: 1; font-variant-numeric: tabular-nums; }
.countdown-meta { display: flex; flex-direction: column; gap: 2px; }
.countdown-label { font-family: 'JetBrains Mono', monospace; font-size: 12px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--ink-mute); }
.countdown-date { font-size: 18px; font-weight: 600; color: var(--ink); }
.countdown-sub { font-size: 14px; color: var(--ink-mute); }
.countdown-divider { width: 1px; align-self: stretch; background: var(--border); margin: 0 0.4rem; }
.progress-overview { margin-left: auto; display: flex; align-items: center; gap: 1rem; }
.ring-wrap { position: relative; width: 76px; height: 76px; }
.ring-wrap svg { transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: var(--border); stroke-width: 7; }
.ring-fg { fill: none; stroke: var(--teal); stroke-width: 7; stroke-linecap: round; transition: stroke-dashoffset 1s ease; }
.ring-label { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.ring-pct { font-family: 'Fraunces', serif; font-size: 1.3rem; font-weight: 600; color: var(--teal); line-height: 1; }
.ring-cap { font-size: 14px; color: var(--ink-mute); max-width: 110px; line-height: 1.35; }

/* Sections */
.section { margin-top: 2.8rem; opacity: 0; transform: translateY(16px); animation: rise 0.6s ease forwards; }
.section:nth-of-type(1) { animation-delay: 0.5s; }
.section:nth-of-type(2) { animation-delay: 0.62s; }
.section:nth-of-type(3) { animation-delay: 0.74s; }
.section:nth-of-type(4) { animation-delay: 0.86s; }
.section-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 1.1rem; padding-bottom: 0.6rem; border-bottom: 2px solid var(--border); }
.section-num { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--accent); background: var(--accent-soft); width: 26px; height: 26px; display: inline-flex; align-items: center; justify-content: center; border-radius: 7px; flex-shrink: 0; align-self: center; }
.section-name { font-family: 'Fraunces', serif; font-size: 1.6rem; font-weight: 500; color: var(--ink); }
.section-count { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--ink-mute); margin-left: auto; align-self: center; }

/* Quiz / nav cards */
.quiz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.quiz-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 1.2rem 1.3rem; cursor: pointer;
  transition: border-color 0.18s, box-shadow 0.18s, transform 0.18s;
  text-decoration: none; display: block; color: inherit; position: relative; overflow: hidden;
}
.quiz-card::after, .prof-card::after { content: ''; position: absolute; top: 0; left: 0; width: 3px; height: 100%; background: var(--card-accent, var(--accent)); transform: scaleY(0); transform-origin: top; transition: transform 0.2s ease; }
.quiz-card:hover, .prof-card:hover { border-color: var(--card-accent, var(--accent)); box-shadow: 0 6px 20px var(--card-accent-soft, rgba(181,72,46,0.12)); transform: translateY(-3px); }
.quiz-card:hover::after, .prof-card:hover::after { transform: scaleY(1); }
.qc-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.9rem; }
.qc-type { font-family: 'JetBrains Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--ink-mute); }
.qc-icon { font-size: 1.05rem; color: var(--ink-mute); }
.qc-name { font-family: 'Fraunces', serif; font-size: 1.25rem; font-weight: 500; color: var(--ink); margin-bottom: 0.5rem; }
.qc-bottom { display: flex; align-items: center; justify-content: space-between; margin-top: 0.9rem; }
.qc-count { font-size: 14px; color: var(--ink-mute); }
.qc-desc { font-size: 14px; color: var(--ink-mute); line-height: 1.5; }
.score-badge { font-family: 'JetBrains Mono', monospace; font-size: 13px; padding: 3px 10px; border-radius: 6px; font-weight: 500; }
.score-badge.done { background: var(--correct-soft); color: var(--correct); }
.score-badge.partial { background: var(--gold-soft); color: var(--gold); }
.score-badge.fresh { background: var(--surface2); color: var(--ink-mute); border: 1px solid var(--border); }

/* Single-column nav grid (course/exam pickers) */
.nav-grid { display: grid; grid-template-columns: 1fr; gap: 12px; margin-top: 1.4rem; }
.nav-grid.two { grid-template-columns: 1fr 1fr; }

/* Jump nav + topic-pair grid -- used by every exam hub. Was duplicated
   verbatim in each hub page's own <style> block; consolidated here.
   Per-topic chip colors (.jc-*) stay in each hub page since those are
   genuinely page-specific, not shared. */
.jump-nav { display: flex; flex-wrap: wrap; gap: 8px; margin: 0.4rem 0 0.4rem; }
.jump-chip {
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  padding: 7px 14px; border-radius: 20px;
  border: 1px solid var(--border-strong); color: var(--ink-soft);
  text-decoration: none; background: var(--surface);
  transition: border-color 0.15s ease, color 0.15s ease;
}
.jump-chip:hover { border-color: var(--accent); color: var(--accent); }
.jump-chip.active:not([class*="jc-"]) { background: var(--accent); color: #fff; border-color: var(--accent); }

.topics-banner {
  width: min(1180px, calc(100vw - 2.4rem));
  margin-top: 2.2rem;
  margin-left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.8rem 2rem 2rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
}
.topics-banner-head { margin-bottom: 1.1rem; }
.topics-banner-title { font-family: 'Fraunces', serif; font-size: 1.55rem; font-weight: 500; color: var(--ink); }
.topics-banner-sub { font-size: 14px; color: var(--ink-mute); margin-top: 4px; }
.topics-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 700px) { .topics-grid { grid-template-columns: 1fr; } }

.topic-pair { scroll-margin-top: 16px; position: relative; border: 1px solid var(--border-strong); border-radius: 14px; padding: 1rem 1rem 1rem; background: var(--surface2); overflow: hidden; }
.topic-pair::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--pair-accent, var(--accent)); }
.topic-pair-chapter { display: block; font-family: 'JetBrains Mono', monospace; font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--pair-accent, var(--ink-mute)); margin: 4px 0 10px; }
.topic-pair-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 460px) { .topic-pair-cards { grid-template-columns: 1fr; } }
.topic-pair .quiz-card { background: var(--surface); padding: 1rem 1.05rem; }

/* Simulator banner */
.sim-card {
  grid-column: 1 / -1; margin-top: 1.6rem;
  background: linear-gradient(120deg, var(--gold-soft), var(--teal-soft) 90%);
  border: 1px solid var(--border-strong); border-radius: 12px; padding: 1.3rem 1.5rem;
  cursor: pointer; text-decoration: none; color: inherit;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  transition: border-color 0.18s, box-shadow 0.18s, transform 0.18s;
}
.sim-card:hover { border-color: var(--accent); box-shadow: 0 6px 20px rgba(181,72,46,0.1); transform: translateY(-3px); }
.sim-left .qc-type { color: var(--accent); }
.sim-name { font-family: 'Fraunces', serif; font-size: 1.4rem; font-weight: 500; color: var(--ink); margin: 3px 0; }
.sim-sub { font-size: 14px; color: var(--ink-soft); }
.sim-arrow { font-size: 1.6rem; color: var(--accent); flex-shrink: 0; }
.sim-go { flex-shrink: 0; display: inline-flex; align-items: center; gap: 8px; background: var(--accent); color: #fff; padding: 11px 20px; border-radius: 9px; font-weight: 600; font-size: 15px; transition: background 0.15s; }
.sim-card:hover .sim-go { background: var(--accent-deep); }
.sim-locked { opacity: 0.6; cursor: default; pointer-events: none; }
.sim-lock-note { font-size: 13px; color: var(--ink-mute); font-style: italic; }

/* How-to */
.howto { margin-top: 2.8rem; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem 1.7rem; opacity: 0; transform: translateY(16px); animation: rise 0.6s ease 0.74s forwards; }
.howto h3 { font-family: 'Fraunces', serif; font-size: 1.2rem; font-weight: 500; margin-bottom: 0.9rem; }
.howto ul { list-style: none; display: flex; flex-direction: column; gap: 0.7rem; }
.howto li { display: flex; gap: 11px; font-size: 15px; color: var(--ink-soft); line-height: 1.55; }
.howto li .dot { color: var(--accent); font-weight: 700; flex-shrink: 0; }

/* Donation footer — subtle page footer */
.donation-footer {
  margin-top: 4rem;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
  padding: 2.8rem calc(50vw - 50% + 2rem);
  border-top: 1px solid var(--border);
  background: var(--surface);
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem; flex-wrap: wrap;
  opacity: 0; animation: fadeOnly 0.6s ease 0.9s forwards;
}
.donation-footer .msg { font-size: 16px; color: var(--ink-soft); line-height: 1.65; flex: 1; min-width: 280px; max-width: 640px; }
.donation-footer .msg strong { color: var(--ink); font-weight: 600; }
.donation-links { display: flex; gap: 12px; flex-shrink: 0; flex-wrap: wrap; align-items: center; }
.donate-btn { display: inline-flex; align-items: center; gap: 9px; padding: 13px 20px; border-radius: 10px; text-decoration: none; transition: all 0.16s; border: 1px solid var(--border-strong); background: var(--bg); }
.donate-btn:hover { background: var(--surface2); transform: translateY(-2px); box-shadow: 0 4px 14px rgba(0,0,0,0.08); }
.donate-btn img { height: 22px; width: auto; display: block; }
.donate-btn.venmo img { height: 19px; }
.donate-btn .znum { font-family: 'JetBrains Mono', monospace; font-size: 15px; color: var(--ink-soft); font-weight: 500; }

@keyframes rise { to { opacity: 1; transform: translateY(0); } }
@keyframes fadeOnly { to { opacity: 1; } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

/* Copy toast */
.copy-toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: #fff; font-family: 'DM Sans', sans-serif; font-size: 14px;
  font-weight: 500; padding: 12px 20px; border-radius: 10px; box-shadow: 0 6px 24px rgba(0,0,0,0.18);
  opacity: 0; pointer-events: none; transition: opacity 0.2s ease, transform 0.2s ease; z-index: 999;
}
.copy-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 560px) {
  .quiz-grid, .nav-grid.two { grid-template-columns: 1fr; }
  .countdown-card { gap: 1rem; }
  .progress-overview { margin-left: 0; margin-top: 0.5rem; width: 100%; }
}

/* Professor's practice-question banner + cards (psych exam2 / exam3).
   The accent-bar and hover rules are shared with .quiz-card above; only the
   banner chrome and the card's own typography live here. */
.prof-banner {
  width: min(1180px, calc(100vw - 2.4rem));
  margin-top: 1.8rem;
  margin-left: 50%;
  transform: translateX(-50%);
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  padding: 1.8rem 2rem 2rem;
  box-shadow: 0 6px 22px rgba(0,0,0,0.06);
}
.prof-banner-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 1.1rem; flex-wrap: wrap; }
.prof-banner-title { font-family: 'Fraunces', serif; font-size: 1.55rem; font-weight: 500; color: var(--ink); }
.prof-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.prof-card {
  background: var(--surface); border: 1px solid var(--border-strong); border-radius: 12px;
  padding: 1.1rem 1.2rem; text-decoration: none; color: inherit; display: block;
  transition: border-color 0.18s, box-shadow 0.18s, transform 0.18s; position: relative; overflow: hidden;
}
.prof-card-chapter { font-family: 'JetBrains Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-mute); }
.prof-card-name { font-family: 'Fraunces', serif; font-size: 1.12rem; font-weight: 500; color: var(--ink); margin: 6px 0 8px; line-height: 1.25; }
.prof-card-count { font-size: 13px; color: var(--ink-mute); }
.prof-card-score { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--border); font-family: 'JetBrains Mono', monospace; font-size: 12.5px; }
.prof-card-score .pcs-fresh { color: var(--ink-mute); }
.prof-card-score .pcs-best { color: var(--correct); font-weight: 600; }
.prof-card-score .pcs-meta { color: var(--ink-mute); margin-left: 6px; }
.prof-card-score .pcs-trend-up { color: var(--correct); }
.prof-card-score .pcs-trend-down { color: var(--accent); }
@media (max-width: 900px) { .prof-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .prof-grid { grid-template-columns: 1fr; } }