/* ============================================================
   FREE TOOLS (shared across tool pages) — appended styles
   ============================================================ */
.tools-chips-bar { border-bottom: 1px solid var(--line-soft); background: rgba(15,18,25,.6); position: sticky; top: 64px; z-index: 35; backdrop-filter: blur(10px); }
.chips-row { display: flex; gap: 8px; overflow-x: auto; padding: 10px 0; scrollbar-width: none; }
.chips-row::-webkit-scrollbar { display: none; }
.chip {
  flex: none; font-size: 12.5px; font-weight: 600; color: var(--mut);
  border: 1px solid var(--line); border-radius: 999px; padding: 5px 14px;
  background: var(--card); transition: all .15s; text-decoration: none;
}
.chip:hover { color: var(--txt); border-color: #35405e; text-decoration: none; }
.chip.on { color: #fff; background: var(--grad); border-color: transparent; box-shadow: 0 4px 14px rgba(124,92,255,.35); }

.tool-head-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 14px; flex-wrap: wrap; }
.tool-head-row .top-actions { margin-left: auto; }

.wave-box.tall { height: 170px; }
.txt {
  width: 100%; background: var(--card-2); border: 1px solid var(--line); color: var(--txt);
  border-radius: 8px; padding: 8px 10px; font-size: 14px; font-variant-numeric: tabular-nums; outline: none;
}
.txt:focus { border-color: var(--acc); }

/* key/bpm result cards */
.kb-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.kb-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 26px 24px; text-align: center;
}
.kb-label { font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--acc-2); display: block; margin-bottom: 10px; }
.kb-big { font-size: clamp(44px, 7vw, 64px); font-weight: 800; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; font-variant-numeric: tabular-nums; }
.kb-mid { font-size: clamp(26px, 4vw, 34px); font-weight: 800; font-variant-numeric: tabular-nums; }
.kb-unit { color: var(--mut); font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; margin-top: 6px; }
.kb-alt { color: var(--mut-2); font-size: 12px; margin-top: 12px; min-height: 16px; }
.conf { display: flex; align-items: center; gap: 10px; margin-top: 14px; justify-content: center; }
.conf-bar { width: 130px; height: 6px; border-radius: 3px; background: #20273c; overflow: hidden; }
.conf-bar b { display: block; height: 100%; width: 0%; background: var(--grad); border-radius: 3px; transition: width .4s ease; }
.conf span { font-size: 11.5px; color: var(--mut-2); }

/* tap tempo */
.tap-panel { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
.tap-left { flex: 1 1 260px; }
.tap-hint { color: var(--mut); font-size: 13px; margin-top: 6px; }
.tap-right { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.tap-bpm { font-size: 34px; font-weight: 800; min-width: 110px; text-align: right; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; font-variant-numeric: tabular-nums; }
#btnTap { padding: 16px 34px; font-size: 16px; letter-spacing: .12em; border-radius: 14px; }
#btnTap.tapped { animation: tapPulse .22s ease; }
@keyframes tapPulse { 0% { transform: scale(0.94); } 60% { transform: scale(1.05); } 100% { transform: scale(1); } }
.kb-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 18px; }

/* vocal remover */
.mode-chips { display: flex; gap: 8px; flex-wrap: wrap; margin-left: auto; }
.mode-chip {
  font-size: 12px; font-weight: 700; color: var(--mut); cursor: pointer;
  border: 1px solid var(--line); background: var(--card-2); border-radius: 999px; padding: 6px 14px; transition: all .15s;
}
.mode-chip:hover { color: var(--txt); }
.mode-chip.on { color: #fff; background: var(--grad); border-color: transparent; }
.sep-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.sep-grid .sc-head { margin-bottom: 12px; }
.sep-grid .sc-head .btn { flex: none; }
.sep-grid .sc-meter { margin-bottom: 12px; }

/* speed & pitch */
.sp-sliders { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-bottom: 14px; }
.sp-slider .k-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.sp-slider label { font-size: 11px; font-weight: 700; letter-spacing: .1em; color: var(--mut-2); text-transform: uppercase; }
.sp-slider output { font-size: 15px; font-weight: 700; color: var(--txt); font-variant-numeric: tabular-nums; }
.sp-slider input[type="range"] { height: 6px; }
.sp-marks { display: flex; justify-content: space-between; color: var(--mut-2); font-size: 10.5px; margin-top: 6px; font-variant-numeric: tabular-nums; }
.sp-options { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.check { display: inline-flex; align-items: center; gap: 8px; color: var(--mut); font-size: 13px; cursor: pointer; }
.check input { accent-color: #7c5cff; width: 15px; height: 15px; }
.sp-presets { display: flex; gap: 6px; align-items: center; color: var(--mut-2); font-size: 12px; margin-left: auto; flex-wrap: wrap; }

/* cutter */
.cut-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 14px; }
.cut-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sel-len { margin-left: auto; color: var(--acc-2); font-size: 12.5px; font-weight: 600; font-variant-numeric: tabular-nums; }

/* joiner */
.track-list { display: grid; gap: 8px; margin-bottom: 16px; }
.track-row {
  display: grid; grid-template-columns: 30px 1fr 70px 60px auto;
  gap: 12px; align-items: center; background: var(--card-2);
  border: 1px solid var(--line-soft); border-radius: 10px; padding: 10px 12px;
}
.track-row .tr-idx {
  width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center;
  background: var(--sc, var(--acc)); color: #fff; font-weight: 800; font-size: 12px;
}
.track-row .tr-nm { font-size: 13.5px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.track-row .tr-dur, .track-row .tr-sr { color: var(--mut-2); font-size: 12px; font-variant-numeric: tabular-nums; }
.track-row .tr-btns { display: flex; gap: 6px; }
.join-options { display: grid; gap: 12px; border-top: 1px solid var(--line-soft); padding-top: 16px; margin-bottom: 16px; }
.opt-row { display: grid; grid-template-columns: 200px 1fr 70px; gap: 14px; align-items: center; }
.opt-row .opt-label { font-size: 12.5px; color: var(--mut); font-weight: 600; }
.opt-row output { color: var(--txt); font-size: 13px; font-variant-numeric: tabular-nums; }
.opt-row input[type="range"] { width: 100%; }
.join-total { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; border-top: 1px solid var(--line-soft); padding-top: 16px; color: var(--mut); font-size: 13px; }
.join-total b { color: var(--txt); font-variant-numeric: tabular-nums; }
.rec-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* recorder */
.rec-panel { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.rec-left { display: flex; align-items: center; gap: 14px; flex: 1 1 300px; }
.rec-right { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.rec-btn {
  width: 58px; height: 58px; border-radius: 50%; border: 1px solid rgba(248,113,113,.4);
  background: rgba(248,113,113,.12); color: #f87171; display: grid; place-items: center; cursor: pointer; transition: all .15s;
}
.rec-btn svg { width: 24px; height: 24px; }
.rec-btn:hover:not(:disabled) { background: rgba(248,113,113,.22); transform: scale(1.04); }
.rec-btn:disabled { opacity: .35; cursor: not-allowed; }
.rec-btn.stop { border-color: var(--line); background: var(--card-2); color: var(--txt); }
.rec-btn.stop:hover:not(:disabled) { background: var(--card-2); border-color: #3a4468; }
.rec-info { min-width: 0; flex: 1; }
.rec-status { font-size: 13.5px; font-weight: 600; margin-bottom: 8px; }
.rec-meter { height: 6px; border-radius: 3px; background: #20273c; overflow: hidden; width: min(280px, 100%); }
.rec-meter b { display: block; height: 100%; width: 0%; background: linear-gradient(90deg, #34d399, #fbbf24 78%, #f87171); transition: width .06s linear; }
.take-panel { border-color: rgba(244,114,182,.35); }
.take-title { font-size: 15px; font-weight: 800; margin-bottom: 14px; color: #f9a8d4; }
.mini-out { font-size: 11.5px; color: var(--mut); font-variant-numeric: tabular-nums; }
.mix-options { display: grid; gap: 12px; border-top: 1px solid var(--line-soft); padding-top: 14px; }
.sel {
  background: var(--card-2); border: 1px solid var(--line); color: var(--txt);
  border-radius: 8px; padding: 6px 10px; font-size: 13px; outline: none; cursor: pointer;
}
.sel:disabled { opacity: .45; cursor: not-allowed; }

/* tools grid on landing */
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tool-card { display: block; background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 24px; transition: transform .18s ease, border-color .18s ease; color: var(--txt); }
.tool-card:hover { transform: translateY(-3px); border-color: #31395a; text-decoration: none; }
.tool-card .ic { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; margin-bottom: 16px; background: rgba(34,211,238,.1); border: 1px solid rgba(34,211,238,.28); color: #7ddcf0; }
.tool-card .ic svg { width: 21px; height: 21px; }
.tool-card h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 8px; }
.tool-card p { color: var(--mut); font-size: 14px; }
.tool-card .go { display: inline-block; margin-top: 14px; color: var(--acc-2); font-size: 13.5px; font-weight: 700; }

/* responsive additions for tools */
@media (max-width: 960px) {
  .tools-grid { grid-template-columns: 1fr 1fr; }
  .kb-grid { grid-template-columns: 1fr 1fr; }
  .sep-grid { grid-template-columns: 1fr; }
  .cut-grid { grid-template-columns: 1fr 1fr; }
  .opt-row { grid-template-columns: 160px 1fr 60px; }
}
@media (max-width: 640px) {
  .tools-grid, .kb-grid, .cut-grid { grid-template-columns: 1fr; }
  .sp-sliders { grid-template-columns: 1fr; gap: 18px; }
  .opt-row { grid-template-columns: 1fr; gap: 6px; }
  .opt-row input[type="range"] { width: 100%; }
  .tap-right { margin-left: 0; }
  .track-row { grid-template-columns: 26px 1fr 56px auto; }
  .track-row .tr-sr { display: none; }
  .sp-presets { margin-left: 0; }
  .tools-chips-bar { top: 0; position: static; }
}