/* ==========================================================
   VOX - Minimalist & Refined Audio Studio
   Anti-slop design: clean typography, tactile controls, restrained palette
   ========================================================== */

:root {
  --bg-app: #0d0f12;
  --bg-surface: #14171d;
  --bg-surface-hover: #1b1f27;
  --bg-sunken: #090a0d;
  
  --border-subtle: #20242c;
  --border-strong: #2e3440;
  
  --text-main: #f3f4f6;
  --text-muted: #8b929e;
  --text-faint: #4e5562;

  --accent-red: #e5484d;
  --accent-red-hover: #f2555a;
  --accent-blue: #3b82f6;
  --accent-blue-hover: #2563eb;
  --selection-color: rgba(59, 130, 246, 0.15);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", SFMono-Regular, Consolas, Menlo, monospace;
}

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

html, body {
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  display: flex;
  flex-direction: column;
}

/* Layout */
.app-wrapper {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 20px 80px;
  width: 100%;
}

/* Minimal Top Bar */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border-subtle);
}

.logo {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-red);
  border-radius: 50%;
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  background: none;
  color: var(--text-main);
  font-family: inherit;
  transition: all 0.15s ease;
  user-select: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background: #ffffff;
  color: #000000;
  font-weight: 600;
}
.btn-primary:hover:not(:disabled) {
  background: #e5e5e5;
}

.btn-secondary {
  background: var(--bg-surface);
  border-color: var(--border-subtle);
  color: var(--text-main);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--bg-surface-hover);
  border-color: var(--border-strong);
}

.btn-secondary.active {
  background: rgba(59, 130, 246, 0.16);
  border-color: var(--accent-blue);
  color: #93c5fd;
}

.btn-danger {
  background: rgba(229, 72, 77, 0.12);
  border-color: rgba(229, 72, 77, 0.25);
  color: #ff8b8e;
}
.btn-danger:hover:not(:disabled) {
  background: rgba(229, 72, 77, 0.2);
  color: #ffffff;
}

.btn-ghost {
  color: var(--text-muted);
}
.btn-ghost:hover:not(:disabled) {
  color: var(--text-main);
  background: var(--bg-surface);
}

/* Stage Container */
.main-stage {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  margin-bottom: 32px;
  position: relative;
}

/* ==========================================================
   STATE 1: RECORDING HUB (Hero)
   ========================================================== */
.record-hub {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px 0;
}

.record-button-outer {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--bg-sunken);
  border: 2px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  margin-bottom: 24px;
}

.record-button-outer:hover {
  border-color: var(--text-muted);
  transform: scale(1.03);
}

.record-button-inner {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-red);
  transition: all 0.2s ease;
}

.is-recording .record-button-inner {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  animation: pulseStop 1.5s infinite alternate ease-in-out;
}

@keyframes pulseStop {
  0% { transform: scale(0.95); }
  100% { transform: scale(1.08); }
}

.timer-large {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin-bottom: 8px;
}

.status-caption {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* Live Waveform in Recorder */
.live-wave-box {
  width: 100%;
  max-width: 400px;
  height: 36px;
  background: var(--bg-sunken);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 24px;
}

#live-visualizer-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.recorder-controls-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.file-drop-hint {
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-top: 24px;
}

.file-drop-hint span {
  text-decoration: underline;
  cursor: pointer;
  color: var(--text-muted);
}
.file-drop-hint span:hover {
  color: var(--text-main);
}

/* ==========================================================
   STATE 2: EDITOR (Appears when audio is ready)
   ========================================================== */
.editor-hub {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Waveform Canvas Viewport */
.waveform-viewport {
  background: var(--bg-sunken);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
}

#waveform-canvas-container {
  width: 100%;
  height: 160px;
  display: block;
  cursor: crosshair;
}

/* Waveform Meta & Time Bar */
.waveform-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4px;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.playback-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-play-minimal {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #ffffff;
  color: #000000;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: transform 0.1s ease;
}
.btn-play-minimal:hover {
  transform: scale(1.05);
}

.time-counter {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--text-main);
}
.time-counter span {
  color: var(--text-muted);
}

/* Actions Toolbar */
.actions-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.action-buttons-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ==========================================================
   MODULAR INDEPENDENT EFFECTS PANEL
   ========================================================== */
.effects-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  font-weight: 600;
}

.effects-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--bg-sunken);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}

.effect-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.effect-row:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.effect-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-main);
  min-width: 140px;
}

.pills-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.pill-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.12s ease;
  user-select: none;
}

.pill-btn:hover {
  color: var(--text-main);
  border-color: var(--border-strong);
}

.pill-btn.active {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
  font-weight: 600;
}

/* Slider within effect row */
.slider-group {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
  min-width: 170px;
}

.slider-group input[type="range"] {
  width: 90px;
  accent-color: #ffffff;
  cursor: pointer;
}

/* Extended pitch slider for high-precision micro-tuning */
.slider-group-pitch input[type="range"]#slider-pitch {
  width: 240px;
  max-width: 50vw;
}

/* Export / Download Bar */
.export-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}

.export-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 260px;
}

.input-minimal {
  background: var(--bg-sunken);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-family: inherit;
  outline: none;
  flex: 1;
}
.input-minimal:focus {
  border-color: var(--border-strong);
}

.select-minimal {
  background: var(--bg-sunken);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-family: inherit;
  outline: none;
  cursor: pointer;
}

.download-cluster {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 9999;
}

.toast {
  background: #1e2229;
  border: 1px solid #2f3542;
  color: #ffffff;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.2s ease;
}
.toast.fade-out {
  opacity: 0;
  transition: opacity 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.hidden {
  display: none !important;
}

/* ==========================================================
   SEO & Informational Footer
   Restrained, editorial, unobtrusive
   ========================================================== */
.seo-editorial {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.seo-editorial h2 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
}

.seo-editorial p {
  margin-bottom: 20px;
  max-width: 720px;
}

.seo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin: 32px 0;
}

.seo-col h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}

.seo-col p {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* FAQ */
.faq-list {
  margin: 32px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.faq-item summary {
  padding: 14px 18px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  user-select: none;
}

.faq-item p {
  padding: 0 18px 14px;
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

.site-footer {
  margin-top: 40px;
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-faint);
}

@media (max-width: 640px) {
  .app-wrapper {
    padding: 16px 14px 60px;
  }
  .main-stage {
    padding: 24px 16px;
  }
  .timer-large {
    font-size: 2.2rem;
  }
  .effect-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .export-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .download-cluster {
    width: 100%;
  }
  .download-cluster button {
    flex: 1;
  }
}