/* ==========================================================================
   VOXERA AI Voice Studio - Premium Professional Theme
   Dark obsidian/graphite aesthetic, Apple-level simplicity, responsive audio workstation.
   Built with 100% pure vanilla CSS.
   ========================================================================== */

:root {
  /* Color Palette - Obsidian / Graphite with refined Electric Iris accent */
  --bg-app: #090a0f;
  --bg-sidebar: #0e1017;
  --bg-surface: #141721;
  --bg-surface-elevated: #1a1e2b;
  --bg-surface-hover: #212636;
  --bg-glass: rgba(20, 23, 33, 0.75);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-focus: #7c3aed;

  --accent: #7c3aed;
  --accent-light: #9333ea;
  --accent-glow: rgba(124, 58, 237, 0.25);
  --accent-subtle: rgba(124, 58, 237, 0.12);

  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-tertiary: #6b7280;
  --text-inverse: #090a0f;

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.12);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", Menlo, Monaco, Consolas, monospace;

  /* Spacing */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-app);
}
::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* Base App Layout */
.app-container {
  display: flex;
  width: 100%;
  min-height: 100vh;
  background-color: var(--bg-app);
}

/* Desktop Sidebar */
.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 40;
  flex-shrink: 0;
}

.sidebar-header {
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.brand-logo {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #7c3aed, #4f46e5);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px var(--accent-glow);
  flex-shrink: 0;
}

.brand-logo svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: #ffffff;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.brand-meta {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 6px;
  background: var(--accent-subtle);
  color: #c084fc;
  border-radius: var(--radius-full);
  border: 1px solid rgba(192, 132, 252, 0.25);
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* Navigation Links */
.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.92rem;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  width: 100%;
  text-align: left;
}

.nav-item:hover {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.nav-item.active {
  background-color: var(--accent-subtle);
  color: #ffffff;
  border-color: rgba(124, 58, 237, 0.3);
}

.nav-icon {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.nav-badge {
  margin-left: auto;
  font-size: 0.72rem;
  padding: 2px 7px;
  background: var(--bg-surface-elevated);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  font-weight: 600;
}

/* Sidebar Footer (API Status) */
.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.api-status-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.api-status-card:hover {
  border-color: var(--border-medium);
}

.api-status-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--text-tertiary);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.05);
}

.status-dot.connected {
  background-color: var(--success);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

.status-dot.not-configured {
  background-color: var(--warning);
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.5);
}

.status-dot.error {
  background-color: var(--error);
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.6);
}

.status-text {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
}

.api-status-sub {
  font-size: 0.7rem;
  color: var(--text-tertiary);
}

/* Main Workspace Area */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
}

/* Top App Bar Header */
.top-header {
  height: 70px;
  background-color: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 30;
}

.header-meta h1 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: #ffffff;
}

.header-meta p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

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

/* Common Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  white-space: nowrap;
  user-select: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, #7c3aed, #6366f1);
  color: #ffffff;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #8b5cf6, #7073f4);
  box-shadow: 0 6px 18px var(--accent-glow);
}

.btn-secondary {
  background-color: var(--bg-surface);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-elevated);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background-color: var(--bg-surface);
  color: var(--text-primary);
}

.btn-danger {
  background-color: var(--error-bg);
  border-color: rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.btn-danger:hover {
  background-color: rgba(239, 68, 68, 0.2);
  border-color: var(--error);
}

.btn-sm {
  padding: 5px 10px;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-icon-only {
  padding: 8px;
  border-radius: var(--radius-md);
}

/* Main Scrollable Content Container */
.content-view {
  display: none;
  padding: 28px 32px 100px 32px;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

.content-view.active {
  display: block;
  animation: fadeIn 200ms ease-out forwards;
}

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

/* Studio Preset Bar */
.presets-container {
  margin-bottom: 24px;
}

.presets-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-tertiary);
  margin-bottom: 10px;
}

.presets-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.preset-chip {
  padding: 7px 14px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.preset-chip:hover {
  background-color: var(--bg-surface-elevated);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.preset-chip.active {
  background-color: var(--accent-subtle);
  border-color: rgba(124, 58, 237, 0.4);
  color: #c084fc;
}

/* Studio Layout Grid */
.studio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

/* Common Card Containers */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  transition: border-color var(--transition-fast);
}

.card:hover {
  border-color: var(--border-medium);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title-icon {
  width: 18px;
  height: 18px;
  stroke: var(--accent);
}

/* Script Editor Card */
.script-stats {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.stat-badge {
  background-color: var(--bg-surface-elevated);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.stat-badge strong {
  color: #ffffff;
}

.script-editor-wrapper {
  position: relative;
  width: 100%;
}

.script-textarea {
  width: 100%;
  min-height: 190px;
  max-height: 500px;
  background-color: var(--bg-app);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 16px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.98rem;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.script-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.script-textarea::placeholder {
  color: var(--text-tertiary);
}

.script-actions-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  flex-wrap: wrap;
  gap: 10px;
}

.script-quick-buttons {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Script Analysis Pill */
.script-analysis-strip {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background-color: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 14px;
}

.analysis-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Voice Control Panel */
.voice-panel-controls {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.control-subheading {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-tertiary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gender-toggle {
  display: inline-flex;
  background-color: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 4px;
  width: fit-content;
}

.gender-btn {
  padding: 6px 18px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.gender-btn.active {
  background-color: var(--bg-surface-elevated);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

/* Voice Cards Grid */
.voice-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.voice-card {
  background-color: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.voice-card:hover {
  border-color: var(--border-medium);
  background-color: rgba(20, 23, 33, 0.4);
}

.voice-card.active {
  border-color: var(--accent);
  background-color: var(--accent-subtle);
  box-shadow: 0 0 0 1px var(--accent);
}

.voice-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.voice-card-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
}

.voice-card-style {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface-elevated);
  color: #c084fc;
  border: 1px solid rgba(192, 132, 252, 0.2);
}

.voice-card-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  flex: 1;
}

.voice-card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.voice-native-id {
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

/* Category Grid (16 styles) */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
}

.category-card {
  background-color: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.category-card:hover {
  border-color: var(--border-medium);
  background-color: var(--bg-surface-elevated);
}

.category-card.active {
  border-color: var(--accent);
  background-color: var(--accent-subtle);
  box-shadow: 0 0 0 1px var(--accent);
}

.category-icon {
  font-size: 1.3rem;
}

.category-name {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

/* Emotion Presets Scroll / Grid */
.emotions-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.emotion-chip {
  padding: 6px 12px;
  background-color: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.emotion-chip:hover {
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.emotion-chip.active {
  background-color: var(--accent-subtle);
  border-color: var(--accent);
  color: #c084fc;
}

/* Parameters Row */
.parameters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.param-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.param-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-tertiary);
}

.segmented-control {
  display: flex;
  background-color: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 2px;
  overflow-x: auto;
}

.seg-btn {
  flex: 1;
  padding: 6px 8px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  text-align: center;
  transition: all var(--transition-fast);
}

.seg-btn.active {
  background-color: var(--bg-surface-elevated);
  color: #ffffff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

/* Language Selector Dropdown */
.select-input {
  width: 100%;
  background-color: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  color: var(--text-primary);
  font-size: 0.88rem;
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.select-input:focus {
  border-color: var(--border-focus);
}

/* Advanced Voice Direction Accordion */
.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.accordion-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.accordion-icon {
  width: 18px;
  height: 18px;
  stroke: var(--text-secondary);
  transition: transform var(--transition-fast);
}

.accordion.open .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  display: none;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.accordion.open .accordion-content {
  display: block;
}

.prompt-preview-box {
  background-color: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-secondary);
  white-space: pre-wrap;
  max-height: 160px;
  overflow-y: auto;
  margin-top: 10px;
  line-height: 1.5;
}

/* Generation Floating/Sticky Bar */
.generate-bar-card {
  position: sticky;
  bottom: 20px;
  z-index: 25;
  background-color: rgba(20, 23, 33, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(124, 58, 237, 0.35);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.6), 0 0 24px var(--accent-glow);
  padding: 16px 20px;
}

.generate-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.generate-meta-summary {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.meta-pill strong {
  color: #ffffff;
}

.generate-btn-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.kbd-shortcut {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  padding: 2px 6px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  margin-left: 6px;
}

/* Generation Progress Box */
.generation-progress-box {
  display: none;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  background-color: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  margin-top: 14px;
}

.generation-progress-box.active {
  display: flex;
}

.progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}

.progress-track {
  width: 100%;
  height: 6px;
  background-color: var(--bg-app);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #7c3aed, #ec4899);
  transition: width 200ms ease;
  border-radius: var(--radius-full);
}

/* Custom Audio Player Card */
.player-card {
  display: none;
  background: linear-gradient(145deg, #161924, #12141d);
  border: 1px solid rgba(124, 58, 237, 0.3);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
  border-radius: var(--radius-xl);
  padding: 24px;
  margin-top: 24px;
}

.player-card.active {
  display: block;
  animation: fadeIn 300ms ease-out;
}

.player-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}

.player-track-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.player-track-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.player-meta-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge-subtle {
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

/* Canvas Waveform Visualizer */
.visualizer-container {
  width: 100%;
  height: 90px;
  background-color: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  position: relative;
}

.waveform-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Timeline & Controls */
.player-timeline-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.time-display {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  min-width: 44px;
}

.timeline-bar {
  flex: 1;
  height: 6px;
  background-color: var(--bg-surface-elevated);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  transition: height var(--transition-fast);
}

.timeline-bar:hover {
  height: 8px;
}

.timeline-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #7c3aed, #a855f7);
  border-radius: var(--radius-full);
  position: relative;
}

.timeline-thumb {
  position: absolute;
  right: -6px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  background: #ffffff;
  border-radius: var(--radius-full);
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.6);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.timeline-bar:hover .timeline-thumb {
  opacity: 1;
}

.player-controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.primary-playback-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-play-circle {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #7c3aed, #4f46e5);
  border: none;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 18px var(--accent-glow);
  transition: all var(--transition-fast);
}

.btn-play-circle:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-play-circle:active {
  transform: scale(0.96);
}

.player-volume-control {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

.volume-slider {
  width: 80px;
  accent-color: var(--accent);
  cursor: pointer;
}

.player-action-buttons {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Voice Library View */
.library-filters {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.filter-pills {
  display: flex;
  gap: 8px;
}

.filter-pill {
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-pill.active {
  background-color: var(--accent-subtle);
  border-color: var(--accent);
  color: #ffffff;
}

.library-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.library-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all var(--transition-fast);
}

.library-card:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
}

.library-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.library-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
}

.library-best-for {
  font-size: 0.78rem;
  color: var(--accent-light);
  font-weight: 500;
}

.library-card-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}

/* History View */
.history-header-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.history-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: all var(--transition-fast);
}

.history-card:hover {
  border-color: var(--border-medium);
  background-color: var(--bg-surface-elevated);
}

.history-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-width: 0;
}

.history-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.76rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.history-script-snippet {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 600px;
}

.history-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-tertiary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.empty-state-icon {
  width: 48px;
  height: 48px;
  stroke: var(--text-tertiary);
}

/* Settings View */
.settings-section {
  margin-bottom: 32px;
}

.settings-section-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 6px;
}

.settings-section-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.settings-group {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.setting-label-meta {
  flex: 1;
  min-width: 220px;
}

.setting-label {
  font-size: 0.92rem;
  font-weight: 600;
  color: #ffffff;
}

.setting-help {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  margin-top: 2px;
}

.input-field {
  background-color: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 0.88rem;
  outline: none;
  min-width: 260px;
  transition: border-color var(--transition-fast);
}

.input-field:focus {
  border-color: var(--border-focus);
}

.key-input-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  max-width: 440px;
}

/* Security Warning Banner */
.security-banner {
  background-color: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-top: 14px;
}

.security-banner-icon {
  width: 20px;
  height: 20px;
  stroke: var(--warning);
  flex-shrink: 0;
  margin-top: 2px;
}

.security-banner-text {
  font-size: 0.82rem;
  color: #fcd34d;
  line-height: 1.5;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 540px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.8);
  overflow: hidden;
  animation: modalPop 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
}

.modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-height: 70vh;
  overflow-y: auto;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  background-color: var(--bg-surface-elevated);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 28px;
  right: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 110;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  min-width: 280px;
  max-width: 420px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideInRight 200ms ease-out;
}

@keyframes slideInRight {
  from { transform: translateX(40px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast.toast-success { border-color: rgba(16, 185, 129, 0.5); }
.toast.toast-error { border-color: rgba(239, 68, 68, 0.5); }
.toast.toast-warning { border-color: rgba(245, 158, 11, 0.5); }

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.toast-message {
  font-size: 0.86rem;
  color: var(--text-primary);
  flex: 1;
}

/* Mobile Bottom Navigation Bar */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background-color: rgba(14, 16, 23, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-subtle);
  z-index: 50;
  justify-content: space-around;
  align-items: center;
  padding: 0 8px;
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-weight: 500;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.mobile-nav-item.active {
  color: #c084fc;
}

.mobile-nav-item svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2;
}

/* Responsive Media Queries */
@media (max-width: 960px) {
  .sidebar {
    display: none;
  }

  .mobile-bottom-nav {
    display: flex;
  }

  .top-header {
    padding: 0 18px;
  }

  .content-view {
    padding: 20px 18px 100px 18px;
  }

  .generate-bar-card {
    position: fixed;
    bottom: 74px;
    left: 14px;
    right: 14px;
    padding: 12px 16px;
    border-radius: var(--radius-lg);
  }

  .generate-meta-summary {
    display: none;
  }

  .generate-btn-wrap {
    width: 100%;
  }

  .generate-btn-wrap .btn {
    width: 100%;
  }

  .voice-cards-grid {
    grid-template-columns: 1fr;
  }

  .categories-grid {
    grid-template-columns: repeat(auto-fill, minmax(105px, 1fr));
  }

  .toast-container {
    bottom: 80px;
    right: 16px;
    left: 16px;
  }

  .toast {
    min-width: 100%;
  }
}