/* ============================================================
   Epic for MAs — shared design system
   Brand: terracotta / añil / cream / ink (Academia palette)
   Type:  Fraunces (display) + Work Sans (body) + JetBrains Mono (code)
============================================================ */

:root {
  --terracotta: #d67a3c;
  --terracotta-dim: #b86530;
  --anil: #2a3a6b;
  --anil-soft: #3d5193;
  --cream: #f4ecdf;
  --cream-deep: #ebe1cd;
  --paper: #faf5ec;
  --ink: #1a1511;
  --ink-soft: #4a3f35;
  --marigold: #f5b85a;
  --nopal: #8aa06a;
  --nopal-soft: #a4b888;
  --rose: #c95c5c;
  --line: rgba(26, 21, 17, 0.12);
  --line-soft: rgba(26, 21, 17, 0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--cream);
  color: var(--ink);
  font-family: 'Work Sans', system-ui, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--terracotta-dim); text-decoration: none; }
a:hover { color: var(--anil); }

/* ---------- TOP NAV ---------- */
.topnav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 245, 236, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  padding: 16px 32px;
  display: flex; align-items: center; gap: 32px;
}
.brand {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  border: none;
}
.brand .dot { color: var(--terracotta); }
.brand:hover { color: var(--terracotta-dim); }
.navlinks {
  display: flex; gap: 28px;
  font-size: 0.9rem;
  margin-left: 8px;
}
.navlinks a {
  color: var(--ink-soft); border: none; font-weight: 500;
  padding: 6px 0;
  border-bottom: 1.5px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.navlinks a:hover { color: var(--ink); border-bottom-color: var(--terracotta); }
.navlinks a.active { color: var(--ink); border-bottom-color: var(--terracotta); }
.nav-cta {
  margin-left: auto;
  background: var(--ink); color: var(--paper);
  border: none; border: 1px solid var(--ink);
  padding: 8px 16px;
  border-radius: 999px;
  font-family: inherit; font-size: 0.8125rem; font-weight: 500;
  cursor: pointer;
}
.nav-cta:hover { background: var(--terracotta); border-color: var(--terracotta); }

/* ---------- LAYOUT ---------- */
.shell { max-width: 1100px; margin: 0 auto; padding: 56px 32px 96px; }
.shell-narrow { max-width: 780px; margin: 0 auto; padding: 56px 32px 96px; }

/* ---------- TYPOGRAPHY ---------- */
.tag {
  display: inline-block;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--anil);
  background: rgba(42, 58, 107, 0.08);
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 600;
  margin-bottom: 18px;
}
.tag.terracotta {
  color: var(--terracotta-dim);
  background: rgba(214, 122, 60, 0.12);
}
.tag.nopal {
  color: #5a6f44;
  background: rgba(138, 160, 106, 0.18);
}

h1.display {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
}
h1.display em { font-style: italic; color: var(--terracotta); }

h1.lesson-title {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 22ch;
}
h1.lesson-title em { font-style: italic; color: var(--terracotta); }

h2.section {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  font-size: clamp(1.75rem, 3.4vw, 2.25rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin-bottom: 16px;
}

h3.card-title {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 600;
  font-size: 1.375rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.lede {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 400;
  font-size: clamp(1.125rem, 1.6vw, 1.375rem);
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 60ch;
}

.eyebrow {
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--anil);
  font-weight: 600;
}

/* ---------- BREADCRUMB ---------- */
.crumb {
  font-size: 0.8125rem;
  color: var(--ink-soft);
  margin-bottom: 16px;
}
.crumb a { color: var(--ink-soft); border: none; }
.crumb a:hover { color: var(--terracotta); }
.crumb .sep { margin: 0 8px; opacity: 0.4; }

/* ---------- META ROW ---------- */
.meta-row {
  display: flex; flex-wrap: wrap; gap: 24px;
  font-size: 0.875rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
}
.meta-row strong { color: var(--ink); font-weight: 600; }

/* ---------- CARDS ---------- */
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
}
.card .eyebrow { display: block; margin-bottom: 10px; }
.card h3 { margin-bottom: 14px; }
.card p { color: var(--ink-soft); font-size: 0.9375rem; }
.card.dark { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.card.dark .eyebrow { color: var(--marigold); }
.card.dark h3 { color: var(--paper); }
.card.dark p { color: rgba(244, 236, 223, 0.78); }
.card.warm { background: linear-gradient(135deg, var(--terracotta) 0%, #c8633a 100%); color: var(--paper); border: none; }
.card.warm .eyebrow { color: rgba(255,255,255,0.78); }
.card.warm h3 { color: var(--paper); font-size: 1.5rem; }
.card.warm p { color: rgba(255,255,255,0.86); }

/* ---------- BUTTON ---------- */
.btn {
  display: inline-block;
  background: var(--ink); color: var(--paper);
  font-family: inherit; font-size: 0.9375rem; font-weight: 600;
  padding: 14px 24px; border-radius: 999px;
  border: 1px solid var(--ink); cursor: pointer;
  transition: background 0.15s ease, transform 0.12s ease;
}
.btn:hover { background: var(--terracotta); border-color: var(--terracotta); color: var(--paper); }
.btn.outline { background: transparent; color: var(--ink); }
.btn.outline:hover { background: var(--ink); color: var(--paper); }
.btn.cream { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn.cream:hover { background: var(--marigold); border-color: var(--marigold); }

/* ---------- AUDIO PLAYER ---------- */
.audio-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  box-shadow: 0 1px 0 rgba(0,0,0,0.02), 0 12px 24px -16px rgba(26,21,17,0.18);
}
.audio-head { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.play-btn {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--terracotta);
  border: none;
  color: var(--paper);
  font-size: 1.25rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.12s ease, background 0.15s ease;
}
.play-btn:hover { transform: scale(1.04); background: var(--terracotta-dim); }
.play-meta .label {
  font-size: 0.6875rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--anil); font-weight: 600;
}
.play-meta .time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem; color: var(--ink-soft);
  display: block; margin-top: 2px;
}
.scrub { height: 4px; background: var(--cream-deep); border-radius: 2px; overflow: hidden; margin-bottom: 18px; }
.scrub > span { display: block; height: 100%; background: var(--ink); }
.karaoke {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 1.25rem; line-height: 1.45;
  color: var(--ink-soft); letter-spacing: -0.005em;
}
.karaoke .now {
  color: var(--ink);
  background: linear-gradient(transparent 60%, rgba(245, 184, 90, 0.45) 60%);
  padding: 0 2px;
}
.karaoke .next { color: rgba(26, 21, 17, 0.42); }

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(244, 236, 223, 0.72);
  padding: 48px 32px;
  text-align: center;
}
.site-footer .brand-foot {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 1.25rem;
  color: var(--paper);
  margin-bottom: 12px;
}
.site-footer .brand-foot .dot { color: var(--terracotta); }
.site-footer .legal { font-size: 0.6875rem; max-width: 60ch; margin: 16px auto 0; opacity: 0.7; line-height: 1.5; }
.site-footer .foot-links {
  display: flex; gap: 24px; justify-content: center;
  font-size: 0.8125rem; margin-top: 16px;
}
.site-footer .foot-links a { color: rgba(244, 236, 223, 0.72); border: none; }
.site-footer .foot-links a:hover { color: var(--marigold); }

/* ---------- PILL / BADGE ---------- */
.pill {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--cream-deep);
  color: var(--ink-soft);
}
.pill.front { background: rgba(214, 122, 60, 0.15); color: var(--terracotta-dim); }
.pill.billing { background: rgba(42, 58, 107, 0.12); color: var(--anil); }
.pill.scope { background: rgba(138, 160, 106, 0.2); color: #5a6f44; }
.pill.bonus { background: rgba(245, 184, 90, 0.25); color: #8a6418; }

/* ---------- UTIL ---------- */
.spacer-sm { height: 24px; }
.spacer-md { height: 48px; }
.spacer-lg { height: 72px; }
hr.rule { border: none; border-top: 1px solid var(--line); margin: 32px 0; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 760px) {
  .topnav { padding: 14px 20px; gap: 16px; flex-wrap: wrap; }
  .navlinks { gap: 16px; font-size: 0.8125rem; }
  .nav-cta { display: none; }
  .shell, .shell-narrow { padding: 36px 20px 64px; }
}