:root {
  /* Telegram theme vars with design-matched fallbacks (light). */
  --bg: var(--tg-theme-secondary-bg-color, #EFEFF4);
  --card: var(--tg-theme-bg-color, #ffffff);
  --section: var(--tg-theme-section-bg-color, #ffffff);
  --text: var(--tg-theme-text-color, #000000);
  --hint: var(--tg-theme-hint-color, #8E8E93);
  --accent: var(--tg-theme-button-color, #3390EC);
  --accent-text: var(--tg-theme-button-text-color, #ffffff);
  --sep: rgba(0,0,0,.07);
  --bg2: rgba(0,0,0,.05);
  --wave-off: #C9D2DC;
}
body.dark {
  --sep: rgba(255,255,255,.08);
  --bg2: rgba(255,255,255,.06);
  --wave-off: #3A4A5A;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  padding-bottom: 90px;
}
.wrap { max-width: 560px; margin: 0 auto; padding: 12px 14px; }

.label {
  font-size: 12px; font-weight: 600; color: var(--hint);
  text-transform: uppercase; letter-spacing: .04em;
  margin: 18px 4px 7px;
}
.block:first-child .label { margin-top: 6px; }

.label-row { display: flex; align-items: center; justify-content: space-between; gap: 8px;
  margin: 18px 4px 7px; }
.label-row .label { margin: 0; }
.seg { display: inline-flex; flex-wrap: wrap; justify-content: flex-end; background: var(--card); border-radius: 9px; padding: 2px;
  box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.seg-opt { font-size: 12px; font-weight: 700; color: var(--hint); padding: 4px 9px;
  border-radius: 7px; cursor: pointer; letter-spacing: .03em; }
.seg-opt.on { background: var(--accent); color: var(--accent-text); }

.card { background: var(--card); border-radius: 13px; overflow: hidden; }

.title {
  width: 100%; border: none; outline: none; background: transparent;
  padding: 13px 14px; font-size: 15px; font-weight: 700; color: var(--text);
  font-family: inherit;
}
.sep { height: 1px; background: var(--sep); margin: 0 14px; }
textarea {
  width: 100%; min-height: 118px; resize: none; border: none; outline: none;
  background: transparent; padding: 12px 14px; font-size: 15px; line-height: 1.5;
  color: var(--text); font-family: inherit;
}
::placeholder { color: var(--hint); }
.meta {
  display: flex; justify-content: space-between; padding: 0 14px 12px;
  font-family: 'Space Mono', monospace; font-size: 11px; color: var(--hint);
}

.cell {
  display: flex; align-items: center; gap: 12px; padding: 11px 14px;
  cursor: pointer; user-select: none;
}
.cell:active { background: var(--bg2); }
.cell + .cell, .row-file { border-top: 1px solid var(--sep); }

.avatar {
  width: 36px; height: 36px; border-radius: 50%; flex: none;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; font-weight: 700;
}
.avatar.sm { width: 32px; height: 32px; font-size: 13px; }
.grow { flex: 1; min-width: 0; }
.cell .name { font-size: 15px; font-weight: 600; color: var(--text); }
.cell .desc { font-size: 12px; color: var(--hint); }
.chev { font-size: 20px; color: var(--hint); transition: transform .2s; display: inline-block; }
.chev.open { transform: rotate(90deg); }
.check { color: var(--accent); font-size: 16px; font-weight: 700; }
.hidden { display: none; }

.select-row {
  position: relative; display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 13px 14px; min-height: 48px; cursor: pointer;
}
.select-row span {
  flex: 1; min-width: 0; font-size: 14.5px; font-weight: 600; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.select-row::after {
  content: "›"; color: var(--hint); font-size: 20px; transform: rotate(90deg);
}
.select-row select {
  position: absolute; inset: 0; width: 100%; opacity: 0; cursor: pointer;
}

.speed-card { padding: 10px; }
.speed-presets, .speed-advanced {
  display: grid; gap: 6px;
}
.speed-presets { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.speed-advanced {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--sep);
}
.speed-chip {
  min-width: 0; min-height: 34px; border: none; border-radius: 8px;
  background: var(--bg2); color: var(--text); padding: 0 6px;
  font-family: inherit; font-size: 12px; font-weight: 700; cursor: pointer;
}
.speed-chip.on { background: var(--accent); color: var(--accent-text); }
.speed-more { color: var(--accent); }
.speed-more.on {
  background: rgba(51,144,236,.12); color: var(--accent);
}
.speed-chip:active { opacity: .75; }
.speed-advanced.hidden { display: none; }

/* files */
.folder-head { display: flex; align-items: center; gap: 9px; padding: 11px 14px; cursor: pointer; }
.folder-head .chev { width: 14px; font-size: 18px; }
.folder-head .fname { flex: 1; font-size: 14.5px; font-weight: 600; }
.count { font-family: 'Space Mono', monospace; font-size: 11px; color: var(--hint); }
.row-file { display: flex; align-items: center; gap: 11px; padding: 10px 14px; cursor: pointer; }
.row-file:active { background: var(--bg2); }
.row-file.sel { background: rgba(51,144,236,.08); }
.ficon {
  width: 28px; height: 28px; border-radius: 50%; flex: none;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg2); color: var(--hint);
}
.row-file.sel .ficon { background: var(--accent); color: #fff; }
.row-file .fn { flex: 1; font-size: 14.5px; color: var(--text); font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row-file.sel .fn { font-weight: 600; }
.dur { font-family: 'Space Mono', monospace; font-size: 11px; color: var(--hint); }
.empty { padding: 16px 14px; font-size: 13px; color: var(--hint); text-align: center; }

/* delete + new folder */
.trash { font-size: 14px; opacity: .55; padding: 4px 2px 4px 6px; cursor: pointer; flex: none; }
.trash:active { opacity: 1; }
.add-folder { color: var(--accent); cursor: pointer; }
.add-folder .chev { color: var(--accent); font-size: 18px; width: 14px; }
.add-folder .fname { color: var(--accent); font-weight: 600; }
.newfolder { display: flex; align-items: center; gap: 8px; padding: 9px 14px;
  border-top: 1px solid var(--sep); }
.newfolder input { flex: 1; border: none; outline: none; background: var(--bg2);
  border-radius: 8px; padding: 9px 11px; font-size: 14px; color: var(--text); font-family: inherit; }
.nf-btn { font-size: 14px; font-weight: 600; color: var(--accent); cursor: pointer;
  padding: 6px 8px; flex: none; }
.nf-btn.add { background: var(--accent); color: var(--accent-text); border-radius: 8px; }
.nf-btn:active { opacity: .6; }

/* player */
.player { padding: 14px; }
.player .head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 11px; }
.player .pname { font-size: 14.5px; font-weight: 700; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 200px; }
.player .ptime { font-family: 'Space Mono', monospace; font-size: 11px; color: var(--hint); margin-top: 2px; }
.player .ctrls { display: flex; align-items: center; gap: 8px; }
.pill {
  font-family: 'Space Mono', monospace; font-size: 11.5px; color: var(--text);
  background: var(--bg2); border-radius: 8px; padding: 6px 8px; cursor: pointer;
}
.iconbtn {
  width: 34px; height: 34px; border-radius: 9px; background: var(--bg2);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 15px; cursor: pointer;
}
.iconbtn:active, .pill:active { opacity: .6; }
.play-row { display: flex; align-items: center; gap: 12px; }
.playbtn {
  width: 44px; height: 44px; flex: none; border-radius: 50%; background: var(--accent);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
}
.playbtn:active { opacity: .85; }
.tri { width: 0; height: 0; border-left: 11px solid var(--accent-text);
  border-top: 7px solid transparent; border-bottom: 7px solid transparent; margin-left: 3px; }
.pause { display: flex; gap: 3px; }
.pause i { width: 3.5px; height: 15px; background: var(--accent-text); border-radius: 2px; }

.wave { flex: 1; min-width: 0; height: 40px; display: flex; align-items: center;
  gap: 2.5px; cursor: pointer; }
.wave i { flex: 1; min-width: 2px; border-radius: 2px; background: var(--wave-off);
  transition: background .1s; }
.wave i.on { background: var(--accent); }
@keyframes eq { 0%,100% { transform: scaleY(.4);} 50% { transform: scaleY(1);} }
.wave.building i { background: var(--accent); transform-origin: center; animation: eq .9s ease-in-out infinite; }

/* fallback main button (browser preview) */
.mainbtn {
  position: fixed; left: 0; right: 0; bottom: 0; height: 62px; border: none;
  background: var(--accent); color: var(--accent-text); font-size: 15px; font-weight: 700;
  letter-spacing: .05em; cursor: pointer; font-family: inherit;
  display: flex; align-items: center; justify-content: center; gap: 9px;
}
.mainbtn:disabled { opacity: .7; }

.toast {
  position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%);
  background: rgba(20,24,30,.94); color: #fff; font-size: 13px; font-weight: 600;
  padding: 10px 16px; border-radius: 11px; z-index: 30; white-space: nowrap;
  animation: tin .25s ease;
}
@keyframes tin { from { transform: translate(-50%,10px); opacity: 0; } to { transform: translate(-50%,0); opacity: 1; } }