/* ─────────────────────────────────────────────────────────────
   ListeningClassroom — shared styles for content pages
   The generator page (generator/index.html) keeps its own
   self-contained styles to avoid disrupting the existing tool.
   ───────────────────────────────────────────────────────────── */

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface2: #1c2128;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #7d8590;
  --accent: #58a6ff;
  --accent-warm: #f78166;
  --accent-green: #3fb950;
  --accent-yellow: #d29922;
  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100vh;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent-warm); }

h1, h2, h3, h4 {
  font-family: 'Fraunces', Georgia, serif;
  letter-spacing: -0.015em;
  color: var(--text);
  line-height: 1.2;
}

h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); margin-bottom: .8rem; }
h2 { font-size: 1.55rem; margin-bottom: .8rem; margin-top: 2rem; }
h3 { font-size: 1.15rem; margin-bottom: .5rem; margin-top: 1.3rem; }

p { color: var(--muted); margin-bottom: 1rem; }

ul, ol { color: var(--muted); padding-left: 1.4rem; margin-bottom: 1rem; }
li { margin-bottom: .35rem; }

/* ── HEADER ── */
header.site {
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: rgba(13,17,23,0.92);
  backdrop-filter: blur(12px);
  z-index: 100;
}
.logo {
  font-family: 'Fraunces', serif;
  font-size: 1.2rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.logo span { color: var(--accent-warm); }
.site-nav { display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; }
.site-nav a {
  color: var(--muted);
  font-size: 0.85rem;
  text-decoration: none;
}
.site-nav a:hover { color: var(--text); }
.site-nav a.cta {
  background: var(--accent);
  color: #0d1117;
  padding: 0.4rem 0.85rem;
  border-radius: 6px;
  font-weight: 600;
}
.site-nav a.cta:hover { background: var(--accent-warm); color: #0d1117; }
@media (max-width: 640px) {
  header.site { padding: .75rem 1rem; gap: .5rem; }
  .site-nav { gap: .75rem; }
  .site-nav a { font-size: 0.8rem; }
}

/* ── PAGE WRAP ── */
main { max-width: 980px; margin: 0 auto; padding: 2rem 1.25rem 4rem; }
main.narrow { max-width: 760px; }

/* ── HERO ── */
.hero {
  text-align: center;
  padding: 3rem 1rem 2.5rem;
}
.hero .eyebrow {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--accent); margin-bottom: 1rem;
  display: inline-flex; align-items: center; gap: .5rem;
}
.hero .eyebrow::before, .hero .eyebrow::after {
  content: ''; width: 22px; height: 1px; background: var(--accent); opacity: .5;
}
.hero h1 { max-width: 720px; margin: 0 auto 1rem; }
.hero h1 em { color: var(--accent-warm); font-style: normal; }
.hero p.lead {
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto 1.75rem;
  font-size: 1.05rem;
}
.hero .cta-row {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 0.25rem;
}
.hero .cta-row .btn { min-width: 230px; justify-content: center; }
@media (max-width: 540px) {
  .hero .cta-row .btn { min-width: 0; width: 100%; }
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: 0.7rem 1.2rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all .15s;
  font-family: inherit;
}
.btn.primary {
  background: var(--accent); color: #0d1117;
  box-shadow: 0 0 20px rgba(88,166,255,0.25);
}
.btn.primary:hover {
  background: var(--accent-warm); color: #0d1117;
  transform: translateY(-1px);
}
.btn.secondary {
  background: transparent; color: var(--text); border-color: var(--border);
}
.btn.secondary:hover { border-color: var(--accent); color: var(--accent); }

/* ── SECTION HEADER ── */
.section { margin-top: 2.5rem; }
.section > h2 {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: .5rem;
  margin-bottom: 1rem;
}
.section > h2 .count {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 400;
}

/* ── GRID OF CARDS ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.resource-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  text-decoration: none;
  color: inherit;
  transition: border-color .15s, transform .15s;
}
.resource-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.resource-card .meta {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
  margin-bottom: .25rem;
}
.resource-card h3 {
  font-size: 1.05rem;
  margin: 0;
  color: var(--text);
}
.resource-card p {
  font-size: 0.86rem;
  color: var(--muted);
  margin: 0;
}

/* ── BADGES ── */
.badge {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--muted);
  letter-spacing: 0.03em;
  font-weight: 600;
  white-space: nowrap;
}
.badge.level-a1 { border-color: #56d364; color: #56d364; }
.badge.level-a2 { border-color: #58a6ff; color: #58a6ff; }
.badge.level-b1 { border-color: #f78166; color: #f78166; }
.badge.level-b2 { border-color: #d29922; color: #d29922; }
.badge.topic {
  border-color: var(--border);
  color: var(--muted);
}
/* Colour modifiers (homepage hero — match the generator's hero) */
.badge.green { border-color: var(--accent-green); color: var(--accent-green); }
.badge.blue  { border-color: var(--accent); color: var(--accent); }
.badge.warm  { border-color: var(--accent-warm); color: var(--accent-warm); }

/* Larger hero badges (homepage) */
.hero .badges {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  flex-wrap: wrap;
  margin: 0 0 2.25rem;
}
.hero .badges .badge {
  font-size: 0.78rem;
  padding: 5px 12px;
}

/* ── BREADCRUMBS ── */
.breadcrumbs {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs .sep { margin: 0 .35rem; opacity: .5; }

/* ── EXERCISE PAGE ── */
.exercise-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.exercise-header .meta-row {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin-top: .6rem;
}
.exercise-header .duration {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  color: var(--muted);
  font-size: 0.85rem;
}
.exercise-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  margin-bottom: 1.5rem;
}
.exercise-block h2 {
  font-size: 1.15rem;
  margin-top: 0;
  margin-bottom: 1rem;
}

/* ── VOCABULARY ── */
.vocab-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: .75rem;
}
.vocab-item {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .65rem .8rem;
}
.vocab-item .word {
  color: var(--accent);
  font-weight: 600;
  margin-right: .35rem;
}
.vocab-item .def {
  color: var(--muted);
  font-size: 0.88rem;
}

/* ── DIALOGUE ── */
.dialogue-block {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  margin: 1rem 0;
}
.dialogue-line {
  display: flex;
  gap: .8rem;
  align-items: flex-start;
  padding: .75rem .9rem;
  background: var(--surface2);
  border-left: 3px solid var(--border);
  border-radius: 6px;
}
.dialogue-line.speaker-1 { border-left-color: var(--accent); }
.dialogue-line.speaker-2 { border-left-color: var(--accent-warm); }
.dialogue-line .who {
  flex-shrink: 0;
  width: 86px;
  font-weight: 600;
  color: var(--text);
  font-size: 0.88rem;
}
.dialogue-line.speaker-1 .who { color: var(--accent); }
.dialogue-line.speaker-2 .who { color: var(--accent-warm); }
.dialogue-line .text {
  flex: 1;
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* ── QUESTION LISTS ── */
.question {
  margin-bottom: 1rem;
}
.question .q-text {
  color: var(--text);
  font-weight: 500;
  margin-bottom: .4rem;
}
.question ol.options {
  list-style: upper-alpha;
  padding-left: 1.6rem;
  margin: 0;
}
.question ol.options li {
  color: var(--muted);
  cursor: default;
}
.question .answer {
  margin-top: .4rem;
  font-size: 0.82rem;
  color: var(--accent-green);
}
.question .answer::before { content: '✓ '; }

/* True / False */
.tf-item { margin-bottom: .75rem; }
.tf-item .statement { color: var(--text); }
.tf-item .answer { font-size: 0.85rem; color: var(--accent-green); margin-top: .25rem; }
.tf-item .answer::before { content: '✓ '; }

/* ── TEACHER TIPS ── */
.tips-block {
  background: rgba(63,185,80,0.06);
  border: 1px solid rgba(63,185,80,0.2);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
}
.tips-block h2 { color: var(--accent-green); margin-top: 0; }
.tips-block ul { color: var(--text); }
.tips-block li { color: var(--text); margin-bottom: .5rem; }

/* ── RELATED ── */
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: .75rem;
}

/* ── INTEGRATION BUTTON ── */
.dialogue-actions {
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}
.btn-generate {
  background: var(--accent);
  color: #0d1117;
  border: none;
  padding: .55rem 1rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  transition: background .15s, transform .15s;
}
.btn-generate:hover { background: var(--accent-warm); transform: translateY(-1px); }

/* ── AD SLOT ── */
.ad-slot {
  margin: 2rem 0;
  padding: 1rem;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.78rem;
  text-align: center;
  min-height: 60px;
  display: none; /* hidden until AdSense is enabled */
}
.ad-slot.enabled { display: block; }
.ad-slot .ad-label {
  display: block;
  margin-bottom: .5rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: .6;
}

/* ── GUIDE ── */
.guide-article {
  max-width: 720px;
}
.guide-article h2 {
  font-size: 1.35rem;
  margin-top: 2.2rem;
  margin-bottom: .6rem;
}
.guide-article p { color: var(--text); margin-bottom: 1rem; font-size: 0.98rem; }
.guide-article p code, .guide-article li code {
  background: var(--surface2);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 0.88em;
  color: var(--accent);
}
.guide-article ul, .guide-article ol { color: var(--text); }
.guide-article li { margin-bottom: .45rem; }
.guide-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.guide-meta span::before { content: '· '; opacity: .5; }
.guide-meta span:first-child::before { content: ''; }

/* ── FOOTER ── */
footer.site {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 4rem;
}
footer.site a { color: var(--muted); text-decoration: none; margin: 0 .35rem; }
footer.site a:hover { color: var(--text); }
footer.site .links { margin-top: .5rem; }

/* ── HOMEPAGE GRID ── */
.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.home-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
  text-decoration: none;
  color: inherit;
  transition: border-color .15s, transform .15s;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.home-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.home-card .eyebrow {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.home-card h3 { font-size: 1.05rem; margin: 0; }
.home-card p { font-size: 0.85rem; margin: 0; }
.home-card .arrow { margin-top: auto; color: var(--accent); font-size: 0.85rem; }

/* ── PROSE LISTING ── */
.list-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem 0;
  border-bottom: 1px solid var(--border);
}
.list-row:last-child { border-bottom: none; }
.list-row a { color: var(--text); font-weight: 500; }
.list-row .meta { color: var(--muted); font-size: 0.82rem; flex-shrink: 0; }

/* ── SKIP LINK (a11y) ── */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #0d1117;
  padding: .5rem 1rem;
  border-radius: 0 0 6px 0;
  font-weight: 600;
  z-index: 1000;
}
.skip-link:focus { left: 0; }

/* ── LANG SWITCHER (homepage only — the generator has its own) ── */
.lang-switcher {
  display: flex;
  gap: 2px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px;
}
.lang-btn {
  padding: 0.22rem 0.65rem;
  background: transparent;
  border: none;
  border-radius: 4px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  font-family: 'DM Sans', sans-serif;
  cursor: pointer;
  transition: all 0.15s;
  letter-spacing: 0.04em;
}
.lang-btn.active { background: var(--accent); color: #0d1117; }
.lang-btn:hover:not(.active) { color: var(--text); }

/* Header layout when a lang switcher is present */
header.site .header-right { display: flex; align-items: center; gap: 1.5rem; }
@media (max-width: 880px) {
  header.site { flex-wrap: wrap; gap: .75rem; }
  .site-nav { order: 3; width: 100%; }
  .header-right { gap: 1rem; }
}
@media (max-width: 540px) {
  .site-nav a { font-size: 0.78rem; }
}

/* ── FAQ (homepage) ── */
.faq-list { display: flex; flex-direction: column; gap: 0; }
.faq-item {
  border-top: 1px solid var(--border);
  padding: 1rem 0;
}
.faq-item:last-child { border-bottom: 1px solid var(--border); }
.faq-item > summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  font-size: 0.98rem;
  padding: .25rem 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary::after {
  content: '+';
  color: var(--accent);
  font-size: 1.3rem;
  font-weight: 400;
  line-height: 1;
  transition: transform .15s;
  flex-shrink: 0;
}
.faq-item[open] > summary::after { content: '−'; }
.faq-item > p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: .6rem 0 0 0;
}

/* ── USE GRID (homepage — mirrors generator's .use-grid) ── */
.use-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}
.use-grid .home-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.1rem;
}
.use-grid .home-card h3 {
  font-size: 0.98rem;
  color: var(--text);
  margin-bottom: .45rem;
}
.use-grid .home-card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
}
@media (max-width: 640px) {
  .use-grid { grid-template-columns: 1fr; }
}

/* ── CONTENT NOTE (homepage — mirrors generator's .content-note) ── */
.content-note {
  background: rgba(88,166,255,0.08);
  border: 1px solid rgba(88,166,255,0.18);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  color: var(--text);
  font-size: 0.92rem;
  margin-top: 1rem;
}

/* ── RESPONSIVE ── */
@media (max-width: 540px) {
  .dialogue-line { flex-direction: column; gap: .25rem; }
  .dialogue-line .who { width: auto; }
  .vocab-list { grid-template-columns: 1fr; }
  h1 { font-size: 1.7rem; }
}