/* ═══════════════════════════════════════════════════════
   VocalSwap — Design System & Global Styles
   ═══════════════════════════════════════════════════════ */

/* ─── CSS Custom Properties (Design Tokens) ─── */
:root {
  /* Brand Colors */
  --brand-primary: #7c3aed;
  --brand-primary-light: #a78bfa;
  --brand-primary-dark: #5b21b6;
  --brand-secondary: #2563eb;
  --brand-accent: #06b6d4;

  /* Semantic Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;

  /* Neutrals (Dark mode default) */
  --bg-base: #0f0f14;
  --bg-surface: #16161f;
  --bg-elevated: #1e1e2a;
  --bg-overlay: #252535;
  --bg-glass: rgba(255,255,255,0.04);

  /* Text */
  --text-primary: #f1f0ff;
  --text-secondary: #a09ec0;
  --text-muted: #5e5c7a;
  --text-inverse: #0f0f14;

  /* Borders */
  --border-subtle: rgba(255,255,255,0.07);
  --border-default: rgba(255,255,255,0.12);
  --border-strong: rgba(255,255,255,0.22);
  --border-focus: var(--brand-primary);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 30px rgba(124,58,237,0.3);

  /* Spacing */
  --space-1: 4px; --space-2: 8px; --space-3: 12px;
  --space-4: 16px; --space-5: 20px; --space-6: 24px;
  --space-8: 32px; --space-10: 40px; --space-12: 48px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Typography */
  --font-body: 'Inter', sans-serif;
  --font-display: 'Space Grotesk', sans-serif;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Layout */
  --header-height: 64px;
  --max-width: 1280px;
  --sidebar-width: 280px;
}

/* Light mode */
[data-theme="light"] {
  --bg-base: #f5f4ff;
  --bg-surface: #ffffff;
  --bg-elevated: #f0effa;
  --bg-overlay: #e8e6f8;
  --bg-glass: rgba(0,0,0,0.03);
  --text-primary: #1a1829;
  --text-secondary: #4a4868;
  --text-muted: #9490b0;
  --text-inverse: #f1f0ff;
  --border-subtle: rgba(0,0,0,0.06);
  --border-default: rgba(0,0,0,0.11);
  --border-strong: rgba(0,0,0,0.20);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.14);
}

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition-slow), color var(--transition-slow);
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ─── Focus styles ─── */
:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ═══════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════ */
#app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: 0 var(--space-6);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
  flex-shrink: 0;
}
.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  color: #fff;
  box-shadow: 0 0 16px rgba(124,58,237,0.4);
}
.logo-text strong { color: var(--brand-primary-light); }

/* Nav */
.header-nav {
  display: flex;
  gap: var(--space-1);
  flex: 1;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  white-space: nowrap;
}
.nav-btn:hover {
  background: var(--bg-glass);
  color: var(--text-primary);
}
.nav-btn.active {
  background: rgba(124,58,237,0.15);
  color: var(--brand-primary-light);
}
.nav-btn .badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px; height: 18px;
  background: var(--brand-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  padding: 0 5px;
}

.header-actions { display: flex; align-items: center; gap: var(--space-2); margin-left: auto; }

/* ═══════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════ */
.btn-icon {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: transparent;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
}
.btn-icon:hover { background: var(--bg-glass); color: var(--text-primary); border-color: var(--border-strong); }

.btn-primary {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 12px rgba(124,58,237,0.3);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(124,58,237,0.4); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-secondary:hover { background: var(--bg-overlay); border-color: var(--border-strong); }

.btn-ghost {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-glass); }
.btn-ghost.btn-danger { color: var(--color-danger); }
.btn-ghost.btn-danger:hover { background: rgba(239,68,68,0.1); }

.btn-full { width: 100%; justify-content: center; }

.btn-remove {
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  background: rgba(239,68,68,0.12);
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-danger);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
  flex-shrink: 0;
}
.btn-remove:hover { background: rgba(239,68,68,0.25); }

.btn-cancel {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-6);
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-cancel:hover { color: var(--text-primary); border-color: var(--border-strong); }

/* ═══════════════════════════════════════════════════════
   MAIN LAYOUT
   ═══════════════════════════════════════════════════════ */
#app-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
  min-height: calc(100vh - var(--header-height));
}

/* ─── Tab Panels ─── */
.tab-panel { display: none; animation: fadeInUp 0.3s ease; }
.tab-panel.active { display: block; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════════════
   STUDIO — HERO
   ═══════════════════════════════════════════════════════ */
.studio-hero {
  background: linear-gradient(135deg, rgba(124,58,237,0.12), rgba(37,99,235,0.08));
  border: 1px solid rgba(124,58,237,0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  overflow: hidden;
  position: relative;
}
.studio-hero::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(124,58,237,0.15), transparent 70%);
  pointer-events: none;
}

.hero-text h1 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--space-2);
}
.hero-text p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  max-width: 500px;
  line-height: 1.7;
}
.gradient-text {
  background: linear-gradient(135deg, var(--brand-primary-light), var(--brand-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-steps {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
  flex-wrap: wrap;
}
.step-pill {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
}
.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px; height: 20px;
  background: var(--brand-primary);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}
.step-arrow { color: var(--text-muted); font-size: 0.7rem; }

/* ═══════════════════════════════════════════════════════
   CARDS
   ═══════════════════════════════════════════════════════ */
.studio-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: box-shadow var(--transition-base);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-wide { grid-column: 1 / -1; }

.card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}
.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  color: #fff;
  flex-shrink: 0;
}
.card-icon.bg-purple { background: linear-gradient(135deg, #7c3aed, #a855f7); }
.card-icon.bg-blue   { background: linear-gradient(135deg, #2563eb, #60a5fa); }
.card-icon.bg-green  { background: linear-gradient(135deg, #059669, #34d399); }
.card-icon.bg-success { background: linear-gradient(135deg, #059669, #10b981); }

.card-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 2px;
}
.card-subtitle { color: var(--text-secondary); font-size: 0.8rem; }

.ml-auto { margin-left: auto; }

/* ═══════════════════════════════════════════════════════
   UPLOAD ZONES
   ═══════════════════════════════════════════════════════ */
.upload-zone {
  border: 2px dashed var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--brand-primary);
  background: rgba(124,58,237,0.05);
}
.upload-zone.small { padding: var(--space-6) var(--space-5); }

.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-2);
}
.upload-icon-wrap {
  width: 56px; height: 56px;
  background: rgba(124,58,237,0.1);
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  color: var(--brand-primary-light);
  margin-bottom: var(--space-1);
  transition: transform var(--transition-base);
}
.upload-zone:hover .upload-icon-wrap { transform: scale(1.05); }
.upload-icon-wrap.small { width: 44px; height: 44px; font-size: 1.2rem; }

.upload-main-text { font-weight: 600; font-size: 0.95rem; }
.upload-sub-text { color: var(--text-muted); font-size: 0.8rem; }

/* Upload preview */
.upload-preview { width: 100%; }

.file-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
}
.file-icon {
  font-size: 1.5rem;
  color: var(--brand-primary-light);
  flex-shrink: 0;
}
.file-meta { flex: 1; overflow: hidden; }
.file-name {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-details { display: block; color: var(--text-muted); font-size: 0.75rem; }

/* ═══════════════════════════════════════════════════════
   WAVEFORM & PLAYER
   ═══════════════════════════════════════════════════════ */
.waveform-container {
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-3) var(--space-2);
  margin-bottom: var(--space-3);
  overflow: hidden;
  min-height: 60px;
}
.waveform-container.small { min-height: 48px; }
.waveform-container.result { min-height: 80px; padding: var(--space-4); }

.player-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.player-controls.large { gap: var(--space-4); }

.btn-play {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: var(--brand-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
  flex-shrink: 0;
}
.btn-play:hover { background: var(--brand-primary-dark); transform: scale(1.05); }
.btn-play.small { width: 30px; height: 30px; font-size: 0.75rem; }
.btn-play.large { width: 44px; height: 44px; font-size: 1rem; }

.player-time {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-secondary);
  white-space: nowrap;
}
.time-sep { color: var(--text-muted); }

.volume-ctrl {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}
.volume-icon { color: var(--text-muted); font-size: 0.8rem; }
.volume-slider {
  -webkit-appearance: none;
  width: 80px;
  height: 4px;
  background: var(--border-default);
  border-radius: var(--radius-full);
  outline: none;
  cursor: pointer;
}
.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px;
  background: var(--brand-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
}

/* ═══════════════════════════════════════════════════════
   INNER TABS
   ═══════════════════════════════════════════════════════ */
.inner-tabs {
  display: flex;
  gap: var(--space-1);
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: var(--space-4);
}
.inner-tab {
  flex: 1;
  display: flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.inner-tab.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.inner-panel { display: none; }
.inner-panel.active { display: block; }

/* ═══════════════════════════════════════════════════════
   FORMS
   ═══════════════════════════════════════════════════════ */
.save-to-library, .params-section {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
}
.params-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  display: flex; align-items: center; gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.form-row { margin-bottom: var(--space-4); }
.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
}
.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  transition: border-color var(--transition-fast);
}
.form-input:focus { outline: none; border-color: var(--brand-primary); }
.form-input::placeholder { color: var(--text-muted); }

/* Tags */
.tags-input-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.tag-chip {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: 4px var(--space-3);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}
.tag-chip:hover { border-color: var(--brand-primary); color: var(--brand-primary-light); }
.tag-chip.selected {
  background: rgba(124,58,237,0.2);
  border-color: var(--brand-primary);
  color: var(--brand-primary-light);
}
.tag-chip.small { font-size: 0.7rem; padding: 2px var(--space-2); }

/* Params grid */
.params-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
.params-grid.four-cols {
  grid-template-columns: repeat(4, 1fr);
}

.params-body {
  overflow: hidden;
  max-height: 1000px;
  transition: max-height var(--transition-slow), opacity var(--transition-slow);
  opacity: 1;
}
.params-body.collapsed {
  max-height: 0;
  opacity: 0;
}

.param-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.param-label { font-size: 0.78rem; font-weight: 500; color: var(--text-secondary); }
.param-hint  { font-size: 0.72rem; color: var(--text-muted); margin-top: 2px; }

.param-select {
  padding: var(--space-2) var(--space-3);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.8rem;
  cursor: pointer;
}
.param-select:focus { outline: none; border-color: var(--brand-primary); }

/* Range inputs */
.range-wrap { display: flex; align-items: center; gap: var(--space-2); }
.range-input {
  -webkit-appearance: none;
  flex: 1;
  height: 4px;
  background: var(--border-default);
  border-radius: var(--radius-full);
  cursor: pointer;
}
.range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  background: var(--brand-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: 0 0 6px rgba(124,58,237,0.5);
}
.range-value {
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  color: var(--brand-primary-light);
  min-width: 36px;
  text-align: right;
  font-weight: 600;
}

/* Checkbox param */
.checkbox-item {
  flex-direction: row;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}
.checkbox-item input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--brand-primary);
  margin-top: 2px;
  flex-shrink: 0;
  cursor: pointer;
}

/* ═══════════════════════════════════════════════════════
   VOICE LIST (inline)
   ═══════════════════════════════════════════════════════ */
.library-search-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  margin-bottom: var(--space-3);
  color: var(--text-muted);
  font-size: 0.85rem;
}
.search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.875rem;
}
.search-input::placeholder { color: var(--text-muted); }

.voice-list {
  max-height: 280px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.voice-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.voice-item:hover { background: var(--bg-overlay); border-color: var(--border-default); }
.voice-item.selected {
  background: rgba(124,58,237,0.12);
  border-color: var(--brand-primary);
}

.voice-item-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 0.875rem;
  flex-shrink: 0;
}
.voice-item-info { flex: 1; min-width: 0; }
.voice-item-name {
  font-weight: 600;
  font-size: 0.85rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.voice-item-meta { color: var(--text-muted); font-size: 0.75rem; }

.voice-item-tags { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 2px; }
.voice-item-action {
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.voice-item-action:hover { color: var(--brand-primary-light); background: var(--bg-glass); }

/* ═══════════════════════════════════════════════════════
   PROCESS BAR
   ═══════════════════════════════════════════════════════ */
.process-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: var(--space-5) var(--space-6);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-6);
}
.process-summary {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
  flex-wrap: wrap;
}
.summary-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.summary-item.ready { color: var(--color-success); }
.text-muted { color: var(--text-muted) !important; }

.btn-process {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-8);
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: 0 4px 20px rgba(124,58,237,0.4);
  white-space: nowrap;
  flex-shrink: 0;
}
.btn-process:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(124,58,237,0.5);
}
.btn-process:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

/* ═══════════════════════════════════════════════════════
   PROCESSING OVERLAY
   ═══════════════════════════════════════════════════════ */
.processing-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: var(--space-6);
}

.processing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-12);
  text-align: center;
  max-width: 480px;
  width: 100%;
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  animation: slideInUp 0.4s ease;
}
@keyframes slideInUp {
  from { opacity: 0; transform: translateY(40px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.processing-animation {
  position: relative;
  width: 80px; height: 80px;
  margin: 0 auto var(--space-6);
}
.pulse-ring {
  position: absolute;
  inset: 0;
  border: 2px solid var(--brand-primary);
  border-radius: var(--radius-full);
  animation: pulseRing 2s ease infinite;
  opacity: 0;
}
.pulse-ring.delay-1 { animation-delay: 0.6s; }
.pulse-ring.delay-2 { animation-delay: 1.2s; }
@keyframes pulseRing {
  0%   { transform: scale(0.6); opacity: 0.8; }
  100% { transform: scale(1.6); opacity: 0; }
}
.proc-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--brand-primary-light);
  animation: iconPulse 1.5s ease infinite alternate;
  width: 100%;
  height: 100%;
}
@keyframes iconPulse {
  from { opacity: 0.7; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1.05); }
}

.proc-title { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; margin-bottom: var(--space-1); }
.proc-subtitle { color: var(--text-secondary); font-size: 0.875rem; margin-bottom: var(--space-6); }

.progress-bar-wrap { margin-bottom: var(--space-6); }
.progress-bar {
  position: relative;
  height: 8px;
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-accent));
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
  width: 0%;
  position: relative;
}
.progress-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
  from { transform: translateX(-100%); }
  to   { transform: translateX(100%); }
}
.progress-label {
  display: block;
  text-align: right;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brand-primary-light);
  margin-top: var(--space-1);
}

.proc-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  text-align: left;
}
.proc-step {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition-base);
}
.proc-step.active { color: var(--text-primary); }
.proc-step.done { color: var(--color-success); }

.step-dot {
  width: 10px; height: 10px;
  border-radius: var(--radius-full);
  background: var(--text-muted);
  flex-shrink: 0;
  transition: all var(--transition-base);
  position: relative;
}
.proc-step.active .step-dot {
  background: var(--brand-primary);
  box-shadow: 0 0 8px rgba(124,58,237,0.6);
  animation: stepPulse 1s ease infinite alternate;
}
.proc-step.done .step-dot { background: var(--color-success); }
@keyframes stepPulse {
  from { transform: scale(1); }
  to   { transform: scale(1.4); }
}

/* ═══════════════════════════════════════════════════════
   RESULT SECTION
   ═══════════════════════════════════════════════════════ */
.result-card { border-color: rgba(16,185,129,0.2); }

.result-badge {
  margin-left: auto;
  display: flex; align-items: center; gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.3);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-success);
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.result-player-wrap { grid-column: 1; }
.player-progress-wrap { flex: 1; }

/* A/B Compare */
.ab-compare {
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.ab-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  display: flex; align-items: center; gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.ab-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}
.ab-btn {
  flex: 1;
  display: flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-2);
  background: var(--bg-overlay);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.ab-btn:hover { border-color: var(--border-strong); color: var(--text-primary); }
.ab-btn.active {
  background: rgba(124,58,237,0.15);
  border-color: var(--brand-primary);
  color: var(--brand-primary-light);
}
.ab-vs { color: var(--text-muted); font-size: 0.75rem; font-weight: 700; }
.ab-info {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: 0.78rem;
  color: var(--text-muted);
  background: var(--bg-glass);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
}

/* Result meta */
.result-meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  grid-column: 1 / -1;
}
.meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
}
.meta-label { font-size: 0.72rem; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; }
.meta-value { font-size: 0.875rem; font-weight: 600; }

/* Export */
.export-actions {
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-subtle);
  margin-bottom: var(--space-5);
}
.export-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  display: flex; align-items: center; gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.export-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}
.export-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  font-family: var(--font-body);
}
.export-btn:hover { background: var(--bg-overlay); border-color: var(--border-strong); transform: translateY(-1px); }
.export-btn.primary {
  border-color: rgba(124,58,237,0.3);
  background: rgba(124,58,237,0.08);
}
.export-btn.primary:hover { border-color: var(--brand-primary); background: rgba(124,58,237,0.15); }
.export-btn i { font-size: 1.25rem; color: var(--brand-primary-light); flex-shrink: 0; }
.export-format { display: block; font-size: 0.85rem; font-weight: 600; }
.export-desc { display: block; font-size: 0.72rem; color: var(--text-muted); }

.result-actions-row {
  display: flex;
  gap: var(--space-3);
}

/* ═══════════════════════════════════════════════════════
   LIBRARY PAGE
   ═══════════════════════════════════════════════════════ */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.page-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
}
.page-subtitle { color: var(--text-secondary); font-size: 0.9rem; margin-top: 4px; }

.filters-bar {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.search-wrap {
  display: flex; align-items: center; gap: var(--space-2);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-4);
  flex: 1;
  min-width: 200px;
  color: var(--text-muted);
}

.filter-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.filter-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.filter-tag.active {
  background: rgba(124,58,237,0.15);
  border-color: var(--brand-primary);
  color: var(--brand-primary-light);
}

.view-toggle { display: flex; gap: var(--space-1); }
.view-btn {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}
.view-btn.active { background: var(--bg-elevated); color: var(--text-primary); }

/* Voice Grid */
.voice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.voice-grid.list-view {
  grid-template-columns: 1fr;
}

.voice-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.voice-card:hover {
  border-color: var(--border-default);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.voice-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
  opacity: 0;
  transition: opacity var(--transition-base);
}
.voice-card:hover::before { opacity: 1; }

.voice-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.voice-card-avatar {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
  color: #fff;
  flex-shrink: 0;
}
.voice-card-info { flex: 1; min-width: 0; }
.voice-card-name {
  font-weight: 700;
  font-size: 0.95rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.voice-card-meta { color: var(--text-muted); font-size: 0.75rem; margin-top: 2px; }

.voice-card-tags {
  display: flex; gap: 4px; flex-wrap: wrap;
  margin-bottom: var(--space-3);
}
.voice-card-desc {
  color: var(--text-secondary);
  font-size: 0.8rem;
  line-height: 1.5;
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.voice-card-actions {
  display: flex;
  gap: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-subtle);
}
.voice-card-actions .btn-primary { flex: 1; justify-content: center; font-size: 0.8rem; padding: var(--space-2) var(--space-3); }
.voice-card-actions .btn-icon { flex-shrink: 0; }

/* List view */
.voice-grid.list-view .voice-card {
  display: flex;
  align-items: center;
  padding: var(--space-4) var(--space-5);
}
.voice-grid.list-view .voice-card::before { display: none; }
.voice-grid.list-view .voice-card-header { margin-bottom: 0; flex: 1; }
.voice-grid.list-view .voice-card-tags,
.voice-grid.list-view .voice-card-desc { display: none; }
.voice-grid.list-view .voice-card-actions { border-top: none; padding-top: 0; }

/* ═══════════════════════════════════════════════════════
   PROJECTS PAGE
   ═══════════════════════════════════════════════════════ */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.project-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-base);
}
.project-item:hover { border-color: var(--border-default); box-shadow: var(--shadow-sm); }
.project-icon {
  width: 48px; height: 48px;
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem;
  color: var(--brand-primary-light);
  flex-shrink: 0;
}
.project-info { flex: 1; min-width: 0; }
.project-name { font-weight: 600; font-size: 0.95rem; }
.project-meta { color: var(--text-muted); font-size: 0.8rem; margin-top: 2px; }
.project-status {
  display: flex; align-items: center; gap: var(--space-1);
  padding: 4px var(--space-3);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}
.project-status.completed { background: rgba(16,185,129,0.1); color: var(--color-success); }
.project-status.processing { background: rgba(245,158,11,0.1); color: var(--color-warning); }
.project-status.error { background: rgba(239,68,68,0.1); color: var(--color-danger); }
.project-actions { display: flex; gap: var(--space-2); }

/* ═══════════════════════════════════════════════════════
   EMPTY STATES
   ═══════════════════════════════════════════════════════ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-2);
  padding: var(--space-8) var(--space-4);
  color: var(--text-muted);
}
.empty-state.small { padding: var(--space-6) var(--space-4); font-size: 0.875rem; }
.empty-state i { font-size: 2rem; margin-bottom: var(--space-2); opacity: 0.5; }

.empty-library {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
  padding: var(--space-12) var(--space-6);
}
.empty-illustration {
  width: 80px; height: 80px;
  background: var(--bg-elevated);
  border-radius: var(--radius-xl);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem;
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}
.empty-library h2 { font-family: var(--font-display); font-size: 1.3rem; }
.empty-library p { color: var(--text-secondary); font-size: 0.875rem; max-width: 380px; }

/* ═══════════════════════════════════════════════════════
   MODALS
   ═══════════════════════════════════════════════════════ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
  padding: var(--space-6);
  animation: fadeIn 0.2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modalSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes modalSlideIn {
  from { opacity: 0; transform: translateY(-20px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
}
.modal-header h2 {
  display: flex; align-items: center; gap: var(--space-3);
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-subtle);
}

.mt-16 { margin-top: var(--space-4); }

/* Detail modal */
.detail-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin: var(--space-4) 0;
}
.detail-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-3); }
.detail-desc { color: var(--text-secondary); font-size: 0.875rem; line-height: 1.6; }

/* ═══════════════════════════════════════════════════════
   TOASTS
   ═══════════════════════════════════════════════════════ */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 400;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  font-weight: 500;
  pointer-events: all;
  animation: toastSlideIn 0.3s ease;
  max-width: 360px;
}
@keyframes toastSlideIn {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
.toast.hiding { animation: toastSlideOut 0.3s ease forwards; }
@keyframes toastSlideOut {
  to { opacity: 0; transform: translateX(40px); }
}
.toast-success { border-color: rgba(16,185,129,0.3); }
.toast-success i { color: var(--color-success); }
.toast-error { border-color: rgba(239,68,68,0.3); }
.toast-error i { color: var(--color-danger); }
.toast-info { border-color: rgba(59,130,246,0.3); }
.toast-info i { color: var(--color-info); }
.toast-warning { border-color: rgba(245,158,11,0.3); }
.toast-warning i { color: var(--color-warning); }

/* ═══════════════════════════════════════════════════════
   UTILITIES
   ═══════════════════════════════════════════════════════ */
[hidden] { display: none !important; }

/* Selected voice highlight */
.voice-card.selected {
  border-color: var(--brand-primary) !important;
  background: rgba(124,58,237,0.06) !important;
  box-shadow: 0 0 0 2px rgba(124,58,237,0.2);
}

/* WaveSurfer override for dark bg */
wave { overflow: hidden !important; }

/* Smooth scroll anchor */
html { scroll-behavior: smooth; }

/* Loading spinner generic */
.spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2px solid var(--border-default);
  border-top-color: var(--brand-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* process summary colors */
.summary-item.ready i { color: var(--color-success); }

/* Voice item hover anim */
.voice-item:hover .voice-item-action i {
  color: var(--brand-primary-light);
}

/* Detail modal controls initial hide */
#detail-player-controls { }

/* Result section entry animation */
#result-section { animation: fadeInUp 0.5s ease; }

/* Export btn loading state */
.export-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Params body initial state */
#params-body {
  padding-top: var(--space-4);
}

/* Backend note banner */
.backend-banner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.25);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
  font-size: 0.82rem;
  color: var(--color-warning);
  line-height: 1.5;
}
.backend-banner i { font-size: 1rem; flex-shrink: 0; }
.backend-banner strong { color: var(--color-warning); }
.backend-banner a { color: var(--brand-primary-light); text-decoration: underline; }

/* ═══════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .params-grid.four-cols { grid-template-columns: 1fr 1fr; }
  .result-grid { grid-template-columns: 1fr; }
  .export-grid { grid-template-columns: 1fr 1fr; }
  .result-meta-grid { grid-template-columns: 1fr 1fr; }
  .ab-compare { grid-column: 1; }
}

@media (max-width: 768px) {
  #app-main { padding: var(--space-5) var(--space-4); }

  .header-inner { gap: var(--space-3); padding: 0 var(--space-4); }
  .nav-btn span:not(.badge) { display: none; }
  .logo-text { display: none; }

  .studio-hero { flex-direction: column; padding: var(--space-6); }
  .hero-steps { justify-content: flex-start; }
  .step-pill span:last-child { display: none; }

  .studio-grid { grid-template-columns: 1fr; }
  .params-grid { grid-template-columns: 1fr; }
  .params-grid.four-cols { grid-template-columns: 1fr 1fr; }

  .process-bar { flex-direction: column; gap: var(--space-4); }
  .process-summary { justify-content: center; }
  .btn-process { width: 100%; justify-content: center; }

  .export-grid { grid-template-columns: 1fr 1fr; }
  .result-meta-grid { grid-template-columns: 1fr 1fr; }

  .detail-meta { grid-template-columns: 1fr; }

  .voice-grid { grid-template-columns: 1fr 1fr; }
  .processing-card { padding: var(--space-8) var(--space-6); }
}

@media (max-width: 480px) {
  .studio-hero { display: none; }
  .voice-grid { grid-template-columns: 1fr; }
  .export-grid { grid-template-columns: 1fr; }
  .params-grid.four-cols { grid-template-columns: 1fr; }
  .result-meta-grid { grid-template-columns: 1fr; }
  .hero-steps { display: none; }
  .filter-tags { display: none; }
}