/* ═══════════════════════════════════════════════════════════
   BeatGuess — Stylesheet
   Uses the site-wide theme.css variables (--bg, --surface,
   --surface2, --text, --muted, --border, --accent, --transition)
   ═══════════════════════════════════════════════════════════ */

/* ── Reset ──────────────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", "Segoe UI Variable", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 80px 24px 100px;
}

/* ── Views (screens) ────────────────────────────────────── */
.view {
  animation: fadeSlideUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.view.hidden {
  display: none !important;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeSlideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Typography ─────────────────────────────────────────── */
.page-title {
  font-family: "Segoe UI", "Segoe UI Variable Display", sans-serif;
  font-size: clamp(2rem, 8vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 10px;
  color: var(--text);
  animation: fadeSlideDown 0.8s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.page-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 32px;
}

.hidden { display: none !important; }

/* ── Divider ────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 36px 0;
}

/* ── Back Link ──────────────────────────────────────────── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 40px;
  transition: color 0.15s;
}

.back-link:hover {
  color: var(--text);
}

/* ── Footer link ────────────────────────────────────────── */
.footer-link {
  font-size: 0.9rem;
  color: var(--muted);
}
.footer-link a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}
.footer-link a:hover {
  text-decoration: underline;
}

/* ═══════════════════════════════════════════════════════════
   BEAT SQUARE
   ═══════════════════════════════════════════════════════════ */
.beat-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.beat-square {
  width: clamp(140px, 35vw, 200px);
  height: clamp(140px, 35vw, 200px);
  background: var(--surface2);
  border: 2px solid var(--border);
  border-radius: 16px;
  transition: background 50ms linear, border-color 50ms linear, box-shadow 50ms linear;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.beat-square.lit {
  background: var(--text);
  border-color: var(--text);
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .beat-square.lit {
  background: #e6edf3;
  border-color: #e6edf3;
  box-shadow: 0 0 40px rgba(230, 237, 243, 0.2);
}

.beat-square-sm {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  flex-shrink: 0;
}

.beat-square-md {
  width: clamp(100px, 25vw, 150px);
  height: clamp(100px, 25vw, 150px);
  border-radius: 14px;
  cursor: pointer;
  touch-action: none;
  flex-shrink: 0;
}
.beat-square-md.recording {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.2);
}
[data-theme="dark"] .beat-square-md.recording {
  box-shadow: 0 0 0 3px rgba(47, 129, 247, 0.25);
}

/* Progress bar */
.beat-progress-track {
  width: min(75%, 260px);
  height: 4px;
  background: var(--surface2);
  border-radius: 99px;
  overflow: hidden;
}
.beat-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 99px;
  transition: width 50ms linear;
}

/* ═══════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════ */
.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: "Segoe UI", sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
  white-space: nowrap;
}
.action-btn:hover {
  background: var(--surface2);
  border-color: var(--accent);
  transform: translateY(-1px);
}
.action-btn:active {
  transform: translateY(0);
}
.action-btn:disabled {
  opacity: 0.4;
  pointer-events: none;
}

.action-btn-primary {
  background: #1a7f37;
  color: #fff;
  border-color: rgba(0, 0, 0, 0.15);
}
[data-theme="dark"] .action-btn-primary {
  background: #238636;
}
.action-btn-primary:hover {
  background: #1c8c3d;
  border-color: rgba(0, 0, 0, 0.2);
}
[data-theme="dark"] .action-btn-primary:hover {
  background: #2ea043;
}

.action-btn-danger {
  color: #cf222e;
  border-color: rgba(207, 34, 46, 0.25);
}
.action-btn-danger:hover {
  background: rgba(207, 34, 46, 0.06);
  border-color: rgba(207, 34, 46, 0.5);
}
[data-theme="dark"] .action-btn-danger {
  color: #f85149;
  border-color: rgba(248, 81, 73, 0.25);
}
[data-theme="dark"] .action-btn-danger:hover {
  background: rgba(248, 81, 73, 0.08);
  border-color: rgba(248, 81, 73, 0.4);
}

/* ═══════════════════════════════════════════════════════════
   PLAY VIEW
   ═══════════════════════════════════════════════════════════ */
.play-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.play-hint {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 500;
}

.hint-display {
  background: var(--surface2);
  border-left: 3px solid var(--accent);
  padding: 10px 14px;
  font-size: 0.9rem;
  color: var(--text);
  border-radius: 4px;
  margin-bottom: 20px;
  font-style: italic;
  animation: fadeSlideDown 0.3s ease;
}

/* Answer buttons */
.answers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 8px;
}

.answer-btn {
  font-family: "Segoe UI", sans-serif;
  font-size: 0.92rem;
  font-weight: 500;
  padding: 14px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  cursor: pointer;
  text-align: center;
  line-height: 1.35;
  min-height: 56px;
  transition: background 0.15s, border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.answer-btn:hover {
  background: var(--surface2);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}
.answer-btn:active {
  transform: translateY(0);
}

.answer-btn.correct {
  background: rgba(26, 127, 55, 0.1);
  border-color: #1a7f37;
  color: #1a7f37;
}
[data-theme="dark"] .answer-btn.correct {
  background: rgba(35, 134, 54, 0.15);
  border-color: #3fb950;
  color: #3fb950;
}

.answer-btn.wrong {
  background: rgba(207, 34, 46, 0.08);
  border-color: #cf222e;
  color: #cf222e;
}
[data-theme="dark"] .answer-btn.wrong {
  background: rgba(248, 81, 73, 0.12);
  border-color: #f85149;
  color: #f85149;
}

.answer-btn.dimmed {
  opacity: 0.3;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════════════════
   REVEAL AREA
   ═══════════════════════════════════════════════════════════ */
.reveal-area {
  margin-top: 24px;
  animation: fadeSlideUp 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.reveal-result {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.reveal-result.correct { color: #1a7f37; }
.reveal-result.wrong   { color: #cf222e; }
[data-theme="dark"] .reveal-result.correct { color: #3fb950; }
[data-theme="dark"] .reveal-result.wrong   { color: #f85149; }

.reveal-answer {
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 20px;
}

.reveal-video {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--surface2);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 12px;
  border: 1px solid var(--border);
}
.reveal-video iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.yt-note {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 16px;
  font-style: italic;
  text-align: center;
}

.reveal-sync-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.reveal-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ═══════════════════════════════════════════════════════════
   CREATE VIEW
   ═══════════════════════════════════════════════════════════ */
.create-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px 20px;
  margin-bottom: 14px;
  position: relative;
}

.card-badge {
  position: absolute;
  top: -9px;
  left: 18px;
  background: var(--accent);
  color: #fff;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
}

.create-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text);
}

.optional-tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  background: var(--surface2);
  padding: 2px 7px;
  border-radius: 4px;
  vertical-align: middle;
  margin-left: 6px;
}

.card-desc {
  font-size: 0.87rem;
  color: var(--muted);
  line-height: 1.55;
  margin-bottom: 14px;
}

/* ── Inputs ─────────────────────────────────────────────── */
.input {
  width: 100%;
  font-family: "Segoe UI", sans-serif;
  font-size: 0.9rem;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.15);
}
[data-theme="dark"] .input:focus {
  box-shadow: 0 0 0 3px rgba(47, 129, 247, 0.2);
}
.input::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

.input-sm {
  width: auto;
  max-width: 100px;
  padding: 7px 10px;
}
.input-mono {
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 0.78rem;
}

.input-label {
  font-size: 0.84rem;
  color: var(--muted);
  white-space: nowrap;
  font-weight: 500;
}

.inline-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}

/* Radio buttons */
.radio {
  appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-radius: 50%;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.15s;
  position: relative;
}
.radio:checked {
  border-color: var(--accent);
}
.radio:checked::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}

/* ── Recorder area ──────────────────────────────────────── */
.recorder-area {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
}
.recorder-info {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  min-width: 180px;
}
.recorder-timer {
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 0.92rem;
  color: var(--muted);
}
.recorder-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Keybind button */
.keybind-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
}
.keybind-btn {
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text);
  cursor: pointer;
  min-width: 50px;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}
.keybind-btn:hover {
  border-color: var(--accent);
}
.keybind-btn.listening {
  border-color: var(--accent);
  background: rgba(9, 105, 218, 0.08);
  animation: pulseKeybind 1s ease infinite;
}
[data-theme="dark"] .keybind-btn.listening {
  background: rgba(47, 129, 247, 0.12);
}
@keyframes pulseKeybind {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.6; }
}
.keybind-hint {
  font-size: 0.77rem;
  color: var(--muted);
}

/* ── Create answers ─────────────────────────────────────── */
.create-answers {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.answer-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Share output */
.share-output {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.share-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.copy-toast {
  font-size: 0.8rem;
  color: #1a7f37;
  font-weight: 600;
}
[data-theme="dark"] .copy-toast {
  color: #3fb950;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 520px) {
  .answers {
    grid-template-columns: 1fr;
  }
  .recorder-area {
    flex-direction: column;
    align-items: center;
  }
  .recorder-info {
    align-items: center;
    text-align: center;
  }
  .recorder-btns {
    justify-content: center;
  }
  .reveal-actions {
    flex-direction: column;
  }
  .reveal-actions .action-btn {
    width: 100%;
    justify-content: center;
  }
}

/* ── Difficulty Selector ────────────────────────────────── */
.diff-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
  justify-content: center;
}
.diff-option {
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: 8px;
  padding: 6px;
  transition: 0.2s;
  opacity: 0.4;
  user-select: none;
}
.diff-option img {
  height: 40px;
  width: auto;
  display: block;
}
.diff-option:hover {
  opacity: 0.8;
}
.diff-option.selected {
  opacity: 1;
  border-color: var(--accent);
  background: rgba(47, 129, 247, 0.1);
}
[data-theme="dark"] .diff-option.selected {
  background: rgba(47, 129, 247, 0.2);
}

/* ── Q-Tabs ─────────────────────────────────────────────── */
.q-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.q-tab {
  font-family: inherit;
  padding: 8px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--muted);
  transition: 0.15s;
}
.q-tab:hover {
  background: var(--surface2);
  color: var(--text);
}
.q-tab.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.q-tab.add {
  font-size: 1.12rem;
  padding: 6px 14px;
  border-style: dashed;
}