/* =================================================================
   CADENCE — Minimal Online Metronome
   All styles are scoped under .metronome-app so this can be safely
   embedded inside any page (e.g. a WordPress Custom HTML block)
   without leaking styles onto the rest of the site.
================================================================= */

/* -----------------------------------------------------------------
   1. Theme tokens (light + dark)
----------------------------------------------------------------- */
.metronome-app[data-theme="light"]{
  --bg: #eef0f7;
  --card-bg: #ffffff;
  --card-bg-soft: #f6f7fb;
  --accent: #4f46e5;
  --accent-2: #06b6d4;
  --text: #1f2330;
  --text-muted: #6b7280;
  --text-faint: #9ca3af;
  --border: rgba(15, 23, 42, 0.08);
  --shadow-card: 0 30px 60px -25px rgba(31, 35, 75, 0.18);
  --shadow-soft: 0 10px 24px -12px rgba(31, 35, 75, 0.12);
  --shadow-inset: inset 0 1px 2px rgba(15, 23, 42, 0.04);
}

.metronome-app[data-theme="dark"]{
  --bg: #0e0f16;
  --card-bg: #171922;
  --card-bg-soft: #1e2130;
  --accent: #8b85ff;
  --accent-2: #29d8e8;
  --text: #f1f2f6;
  --text-muted: #9296ab;
  --text-faint: #5d6072;
  --border: rgba(255, 255, 255, 0.08);
  --shadow-card: 0 30px 70px -25px rgba(0, 0, 0, 0.6);
  --shadow-soft: 0 10px 24px -12px rgba(0, 0, 0, 0.4);
  --shadow-inset: inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* -----------------------------------------------------------------
   2. Reset — scoped, never touches the host page
----------------------------------------------------------------- */
.metronome-app, .metronome-app *{
  box-sizing: border-box;
}

.metronome-app{
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding: 3rem 1.25rem;
  border-radius: 32px;
  transition: background 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

.metronome-app button{
  font-family: inherit;
  cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {
  .metronome-app *, .metronome-app *::before, .metronome-app *::after{
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* -----------------------------------------------------------------
   3. Shell + header
----------------------------------------------------------------- */
.metronome-app .app-shell{
  max-width: 420px;
  margin: 0 auto;
}

.metronome-app .app-header{
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.metronome-app .app-title{
  font-family: "Plus Jakarta Sans", sans-serif;
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
  margin: 0;
}

.metronome-app .theme-toggle{
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s ease, color 0.2s ease;
}
.metronome-app .theme-toggle:hover{ transform: translateY(-2px); color: var(--accent); }
.metronome-app .theme-toggle:active{ transform: scale(0.92); }

/* -----------------------------------------------------------------
   4. Card
----------------------------------------------------------------- */
.metronome-app .card{
  background: var(--card-bg);
  border-radius: 28px;
  padding: 2rem 1.75rem 1.75rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.35rem;
  transition: background 0.3s ease;
}

/* -----------------------------------------------------------------
   5. Segmented controls (time signature / subdivision)
----------------------------------------------------------------- */
.metronome-app .segment-group{
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}

.metronome-app .field-label{
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.metronome-app .segment{
  display: flex;
  width: 100%;
  background: var(--card-bg-soft);
  border-radius: 14px;
  padding: 4px;
  box-shadow: var(--shadow-inset);
  gap: 4px;
}

.metronome-app .segment-btn{
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.55rem 0.4rem;
  border-radius: 10px;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.metronome-app .segment-btn:hover{ color: var(--text); }

.metronome-app .segment-btn.is-active{
  background: var(--card-bg);
  color: var(--accent);
  box-shadow: 0 4px 12px -4px rgba(79, 70, 229, 0.25);
}

/* -----------------------------------------------------------------
   6. Beat dots
----------------------------------------------------------------- */
.metronome-app .beat-dots{
  display: flex;
  gap: 0.55rem;
  min-height: 12px;
}

.metronome-app .beat-dot{
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--card-bg-soft);
  border: 1.5px solid var(--border);
  transition: background 0.08s ease, box-shadow 0.08s ease, transform 0.08s ease;
}

.metronome-app .beat-dot.accent{ border-color: rgba(79, 70, 229, 0.35); }

.metronome-app .beat-dot.lit{
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 12px 1px rgba(79, 70, 229, 0.5);
  transform: scale(1.3);
  border-color: transparent;
}

/* -----------------------------------------------------------------
   7. Pulse visualization
----------------------------------------------------------------- */
.metronome-app .pulse-stage{
  position: relative;
  width: 132px;
  height: 132px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.metronome-app .pulse-ring{
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  inset: 0;
}

.metronome-app .pulse-ring-inner{ inset: 16px; }

.metronome-app .pulse-core{
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 12px 30px -8px rgba(79, 70, 229, 0.5);
  transition: transform 0.08s ease-out, box-shadow 0.08s ease-out;
}

.metronome-app .pulse-core.beat-hit{
  transform: scale(1.18);
  box-shadow: 0 18px 40px -6px rgba(79, 70, 229, 0.65);
}

.metronome-app .pulse-core.beat-hit.accent-hit{
  box-shadow: 0 20px 46px -4px rgba(6, 182, 212, 0.6);
}

/* -----------------------------------------------------------------
   8. BPM readout
----------------------------------------------------------------- */
.metronome-app .bpm-block{
  display: flex;
  align-items: center;
  gap: 1.15rem;
}

.metronome-app .bpm-nudge{
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card-bg-soft);
  color: var(--text-muted);
  font-size: 1.15rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease, color 0.2s ease, background 0.2s ease;
}
.metronome-app .bpm-nudge:hover{ color: var(--accent); background: var(--card-bg); transform: translateY(-1px); }
.metronome-app .bpm-nudge:active{ transform: scale(0.9); }

.metronome-app .bpm-readout{
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 100px;
}

.metronome-app .bpm-value{
  font-family: "Plus Jakarta Sans", sans-serif;
  font-weight: 800;
  font-size: 3.1rem;
  line-height: 1;
  letter-spacing: -0.02em;
}

.metronome-app .bpm-unit{
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-faint);
  margin-top: 0.15rem;
}

.metronome-app .tempo-marking{
  margin: -0.6rem 0 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

/* -----------------------------------------------------------------
   9. Sliders
----------------------------------------------------------------- */
.metronome-app .tempo-slider, .metronome-app .volume-slider{
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2)) 0 / var(--fill, 33%) 100% no-repeat, var(--card-bg-soft);
  outline: none;
}

.metronome-app .tempo-slider::-webkit-slider-thumb, .metronome-app .volume-slider::-webkit-slider-thumb{
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  box-shadow: 0 4px 10px rgba(0,0,0,0.25);
  cursor: pointer;
  transition: transform 0.15s ease;
}
.metronome-app .tempo-slider::-webkit-slider-thumb:hover, .metronome-app .volume-slider::-webkit-slider-thumb:hover{ transform: scale(1.1); }

.metronome-app .tempo-slider::-moz-range-thumb, .metronome-app .volume-slider::-moz-range-thumb{
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  cursor: pointer;
}
.metronome-app .tempo-slider::-moz-range-track, .metronome-app .volume-slider::-moz-range-track{
  height: 6px;
  border-radius: 999px;
  background: var(--card-bg-soft);
}

/* -----------------------------------------------------------------
   10. Start / Stop + Tap Tempo
----------------------------------------------------------------- */
.metronome-app .action-row{
  display: flex;
  width: 100%;
  gap: 0.7rem;
}

.metronome-app .btn-start{
  flex: 1.3;
  border: none;
  border-radius: 16px;
  padding: 0.95rem 1rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 14px 30px -10px rgba(79, 70, 229, 0.5);
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}
.metronome-app .btn-start:hover{ transform: translateY(-2px); box-shadow: 0 18px 38px -8px rgba(79, 70, 229, 0.6); }
.metronome-app .btn-start:active{ transform: scale(0.97); }
.metronome-app .btn-start.is-playing{ background: linear-gradient(135deg, #ef4444, #f97316); }

.metronome-app .btn-tap{
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card-bg-soft);
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform 0.12s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.metronome-app .btn-tap:hover{ background: var(--card-bg); }
.metronome-app .btn-tap:active, .metronome-app .btn-tap.is-tapped{
  transform: scale(0.95);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

/* -----------------------------------------------------------------
   11. Volume row
----------------------------------------------------------------- */
.metronome-app .volume-row{
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.metronome-app .icon-btn{
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card-bg-soft);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.metronome-app .icon-btn:hover{ color: var(--accent); }

/* -----------------------------------------------------------------
   12. Presets
----------------------------------------------------------------- */
.metronome-app .preset-group{
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.metronome-app .preset-row{
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.metronome-app .preset-pill{
  border: 1px solid var(--border);
  background: var(--card-bg-soft);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  transition: transform 0.15s ease, background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.metronome-app .preset-pill:hover{ transform: translateY(-2px); color: var(--text); background: var(--card-bg); }
.metronome-app .preset-pill.is-active{
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 8px 20px -8px rgba(79, 70, 229, 0.5);
}

/* -----------------------------------------------------------------
   13. Footer / shortcuts
----------------------------------------------------------------- */
.metronome-app .app-footer{
  text-align: center;
  margin-top: 1.5rem;
}

.metronome-app .app-footer p{
  margin: 0;
  font-size: 0.72rem;
  color: var(--text-faint);
}

.metronome-app kbd{
  font-family: "Inter", sans-serif;
  background: var(--card-bg-soft);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  padding: 0.15rem 0.4rem;
  border-radius: 5px;
  font-size: 0.68rem;
  color: var(--text-muted);
}

/* -----------------------------------------------------------------
   14. Responsive
----------------------------------------------------------------- */
@media (max-width: 460px) {
  .metronome-app{ padding: 2rem 0.85rem; border-radius: 20px; }
  .metronome-app .card{ padding: 1.6rem 1.25rem 1.5rem; border-radius: 22px; }
  .metronome-app .bpm-value{ font-size: 2.6rem; }
  .metronome-app .action-row{ flex-direction: column; }
  .metronome-app .btn-tap, .metronome-app .btn-start{ flex: 1; }
}

@media (min-width: 480px) {
  .metronome-app .app-shell{ max-width: 440px; }
}