/* public/css/blind-test.css — pages SEO « Blind test » (/blind-test, /blind-test/:slug) */
:root {
  --bt-bg: #111827;
  --bt-panel: #151b2e;
  --bt-panel2: #1b2240;
  --bt-line: rgba(140, 155, 255, 0.16);
  --bt-text: #eef1ff;
  --bt-muted: #9aa3c7;
  --bt-violet: #7c6aff;
  --bt-green: #3ee08a;
  --bt-yellow: #ffd54a;
}
body.bt-body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1000px 420px at 50% -120px, rgba(124, 106, 255, 0.18), transparent 70%),
    var(--bt-bg);
  color: var(--bt-text);
  font-family: Inter, Poppins, Arial, sans-serif;
  overflow-x: hidden;
}
.bt-main {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 20px 48px;
  box-sizing: border-box;
}
.bt-main a { color: inherit; }
.bt-crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 12.5px;
  color: var(--bt-muted);
  margin: 6px 0 18px;
}
.bt-crumbs a { color: var(--bt-muted); text-decoration: none; }
.bt-crumbs a:hover { color: #fff; text-decoration: underline; }

/* Hero */
.bt-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  padding: 26px 28px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(124, 106, 255, 0.16), rgba(21, 27, 46, 0.9) 55%);
  border: 1px solid var(--bt-line);
  margin-bottom: 26px;
}
.bt-hero-pl { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); }
.bt-kicker {
  margin: 0 0 8px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #c9c1ff;
}
.bt-hero h1 {
  margin: 0 0 12px;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.bt-lead {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.65;
  color: #d5daf5;
  max-width: 62ch;
}
.bt-lead strong { color: #fff; }
.bt-hero-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.bt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 20px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 14.5px;
  text-decoration: none;
  transition: transform 0.12s, background 0.15s, border-color 0.15s;
}
.bt-btn:hover { transform: translateY(-1px); }
.bt-btn-main {
  background: linear-gradient(135deg, #8b7bff, #6a55f5);
  color: #fff !important;
  box-shadow: 0 8px 24px rgba(124, 106, 255, 0.35);
}
.bt-btn-ghost {
  border: 1px solid var(--bt-line);
  background: rgba(255, 255, 255, 0.04);
  color: #e6e9ff !important;
}
.bt-btn-ghost:hover { border-color: rgba(124, 106, 255, 0.6); }
.bt-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
}
.bt-stats li {
  padding: 8px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--bt-line);
  line-height: 1.15;
}
.bt-stats b { display: block; font-size: 18px; font-weight: 800; }
.bt-stats span { font-size: 11.5px; color: var(--bt-muted); }
.bt-covers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  transform: rotate(-3deg);
}
.bt-covers img {
  width: 100%;
  aspect-ratio: 1;
  height: auto;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.45);
  background: var(--bt-panel2);
}
.bt-covers img:nth-child(even) { transform: translateY(10px); }

/* Titres */
.bt-h2 { margin: 0 0 14px; font-size: 21px; font-weight: 800; }
.bt-h3 { margin: 0 0 12px; font-size: 16px; font-weight: 800; }
.bt-small { margin: 12px 0 0; font-size: 12.5px; color: var(--bt-muted); }
.bt-small a, .bt-note a { color: #c9c1ff; }

/* Grille de cartes playlist */
.bt-group { margin: 0 0 28px; }
.bt-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 10px;
}
.bt-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--bt-panel);
  border: 1px solid var(--bt-line);
  text-decoration: none;
  transition: border-color 0.15s, transform 0.12s, background 0.15s;
}
.bt-card:hover {
  border-color: rgba(124, 106, 255, 0.55);
  background: var(--bt-panel2);
  transform: translateY(-2px);
}
.bt-card-title { font-weight: 800; font-size: 14.5px; line-height: 1.3; color: #fff; }
.bt-card-desc { font-size: 13px; line-height: 1.45; color: var(--bt-muted); flex: 1; }
.bt-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 700;
  color: #b9b2ff;
}
.bt-card-go { color: var(--bt-green); }

/* Panneaux (artistes, décennies, records) */
.bt-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}
.bt-panel {
  padding: 16px 18px;
  border-radius: 16px;
  background: var(--bt-panel);
  border: 1px solid var(--bt-line);
}
.bt-chips { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 0; margin: 0; }
.bt-chips li {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  background: rgba(124, 106, 255, 0.14);
  border: 1px solid rgba(124, 106, 255, 0.3);
}
.bt-bars { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.bt-bars li { display: grid; grid-template-columns: 92px 1fr 40px; align-items: center; gap: 8px; font-size: 12.5px; }
.bt-bar { height: 8px; border-radius: 6px; background: rgba(255, 255, 255, 0.06); overflow: hidden; }
.bt-bar i { display: block; height: 100%; border-radius: 6px; background: linear-gradient(90deg, #8b7bff, #3ee08a); }
.bt-bar-pct { text-align: right; color: var(--bt-muted); }
.bt-records { list-style: none; padding: 0; margin: 0; counter-reset: rec; display: flex; flex-direction: column; gap: 6px; }
.bt-records li {
  counter-increment: rec;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr) auto;
  grid-template-rows: auto auto;
  column-gap: 8px;
  padding: 7px 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 12.5px;
}
.bt-records li::before {
  content: counter(rec);
  grid-row: 1 / span 2;
  align-self: center;
  font-weight: 800;
  color: var(--bt-yellow);
}
.bt-rec-song { font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bt-rec-who { grid-column: 2; color: var(--bt-muted); font-size: 11.5px; }
.bt-rec-time { grid-column: 3; grid-row: 1 / span 2; align-self: center; color: var(--bt-green); }

/* Comment jouer */
.bt-howto {
  padding: 20px 22px;
  border-radius: 18px;
  background: var(--bt-panel);
  border: 1px solid var(--bt-line);
  margin-bottom: 28px;
}
.bt-steps {
  list-style: none;
  counter-reset: st;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.bt-steps li {
  counter-increment: st;
  position: relative;
  padding: 14px 14px 14px 52px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--bt-line);
}
.bt-steps li::before {
  content: counter(st);
  position: absolute;
  left: 14px;
  top: 14px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(124, 106, 255, 0.25);
  font-weight: 800;
}
.bt-steps b { display: block; margin-bottom: 4px; font-size: 14px; }
.bt-steps span { font-size: 13px; line-height: 1.5; color: var(--bt-muted); }
.bt-note { margin: 14px 0 0; font-size: 13.5px; line-height: 1.6; color: #d5daf5; }
.bt-center { text-align: center; margin-top: 16px; }

/* Mobile */
@media (max-width: 768px) {
  .bt-main { padding: 12px 16px 36px; }
  .bt-hero, .bt-hero-pl { grid-template-columns: minmax(0, 1fr); padding: 20px 18px; }
  .bt-covers { order: -1; grid-template-columns: repeat(8, 1fr); transform: none; gap: 4px; }
  .bt-covers img { border-radius: 6px; }
  .bt-covers img:nth-child(even) { transform: none; }
  .bt-lead { font-size: 14.5px; }
  .bt-btn { flex: 1 1 auto; }
  .bt-cols { grid-template-columns: minmax(0, 1fr); }
}