:root {
  --bg: var(--tg-theme-bg-color, #17212b);
  --card: var(--tg-theme-secondary-bg-color, #232e3c);
  --text: var(--tg-theme-text-color, #f5f5f5);
  --muted: var(--tg-theme-hint-color, #7d8a98);
  --accent: var(--tg-theme-button-color, #3390ec);
  --accent-text: var(--tg-theme-button-text-color, #ffffff);
  --link: var(--tg-theme-link-color, #62bcf9);
  --danger: #e74c3c;
  --ok: #2ecc71;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif; min-height: 100dvh; }
body { padding: 12px 12px 24px; padding-bottom: calc(24px + env(safe-area-inset-bottom)); }

#app { max-width: 560px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }

.head { background: var(--card); border-radius: 14px; padding: 14px 16px; }
.level { font-size: 18px; line-height: 1; }
.head h1 { font-size: 22px; font-weight: 700; margin-top: 4px; letter-spacing: -0.01em; }
.meta { color: var(--muted); font-size: 14px; margin-top: 4px; }

.media-wrap { background: var(--card); border-radius: 14px; overflow: hidden; min-height: 200px; display: flex; align-items: center; justify-content: center; position: relative; }
.media-wrap img, .media-wrap video { width: 100%; height: auto; max-height: 360px; object-fit: contain; display: block; }
.media-wrap iframe { width: 100%; aspect-ratio: 16/9; border: 0; display: block; }
.media-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; width: 100%; }
.media-pair img { height: 100%; object-fit: cover; }
.media-hint { position: absolute; top: 8px; right: 8px; background: rgba(0,0,0,.55); color: #fff; padding: 4px 8px; border-radius: 8px; font-size: 11px; }

.timer-box { background: var(--card); border-radius: 14px; padding: 16px; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.timer { font-size: 64px; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; line-height: 1; }
.timer.work { color: var(--accent); }
.timer.rest { color: var(--ok); }
.phase { color: var(--muted); font-size: 15px; text-transform: uppercase; letter-spacing: 0.05em; }
.sets { display: flex; gap: 6px; align-items: baseline; color: var(--muted); font-size: 14px; margin-top: 2px; }
.sets strong { color: var(--text); font-size: 17px; }

.timer-actions { display: flex; gap: 8px; width: 100%; justify-content: center; margin-top: 4px; }
.preset { display: flex; gap: 6px; align-items: center; width: 100%; flex-wrap: wrap; justify-content: center; }
.preset-label { color: var(--muted); font-size: 13px; margin-right: 4px; }

button { font-family: inherit; font-size: 15px; font-weight: 600; border: 0; border-radius: 10px; padding: 12px 18px; cursor: pointer; transition: transform .05s ease, opacity .15s ease; }
button:active { transform: scale(.97); }
button:disabled { opacity: .4; cursor: not-allowed; }
.primary { background: var(--accent); color: var(--accent-text); }
.primary.big { width: 100%; padding: 16px; font-size: 17px; }
.secondary { background: rgba(255,255,255,0.06); color: var(--text); }
.chip { background: rgba(255,255,255,0.06); color: var(--muted); padding: 6px 12px; font-size: 13px; border-radius: 16px; font-weight: 500; }
.chip.active { background: var(--accent); color: var(--accent-text); }

.desc { background: var(--card); border-radius: 14px; padding: 14px 16px; color: var(--text); font-size: 15px; line-height: 1.45; }

.foot { display: flex; flex-direction: column; gap: 10px; margin-top: 6px; }

.center { text-align: center; }
.emoji-xl { font-size: 48px; display: block; margin-bottom: 12px; }
.head.center h1 { font-size: 26px; }

.level-picker { display: flex; flex-direction: column; gap: 10px; }
.level-btn {
  display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto;
  column-gap: 14px; row-gap: 2px; align-items: center;
  background: var(--card); padding: 16px 18px; border-radius: 14px;
  text-align: left; border: 0; cursor: pointer; color: var(--text);
  transition: transform .06s ease, background .15s ease;
}
.level-btn:active { transform: scale(.98); }
.level-btn .dot { grid-row: span 2; font-size: 28px; }
.level-btn .title { font-size: 17px; font-weight: 700; }
.level-btn .sub { font-size: 13px; color: var(--muted); }
.level-btn:disabled { opacity: 0.5; }

.danger { background: rgba(231, 76, 60, 0.12); color: var(--danger); font-weight: 600; }
.danger:active { background: rgba(231, 76, 60, 0.22); }


@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: var(--tg-theme-bg-color, #f5f5f5);
    --card: var(--tg-theme-secondary-bg-color, #ffffff);
    --text: var(--tg-theme-text-color, #111);
    --muted: var(--tg-theme-hint-color, #8e8e93);
  }
  .secondary, .chip { background: rgba(0,0,0,0.06); color: #333; }
  .chip.active { background: var(--accent); color: #fff; }
}