/* ========================================
   Real-time Translation App - Design System
   ======================================== */

:root {
  /* Colors - Dark Theme */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-tertiary: #1a1a25;
  --color-bg-elevated: rgba(255, 255, 255, 0.03);
  --color-bg-glass: rgba(255, 255, 255, 0.05);

  --color-text-primary: #ffffff;
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  --color-text-tertiary: rgba(255, 255, 255, 0.5);

  --color-accent-primary: #6366f1;
  --color-accent-secondary: #8b5cf6;
  --color-accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);

  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  /* Speaker Colors */
  --color-speaker-1: #3b82f6;
  --color-speaker-2: #22c55e;
  --color-speaker-3: #f59e0b;
  --color-speaker-4: #ec4899;

  /* Borders */
  --border-subtle: 1px solid rgba(255, 255, 255, 0.06);
  --border-accent: 1px solid rgba(99, 102, 241, 0.3);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

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

/* ========================================
   Reset & Base
   ======================================== */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* RTL Support */
[dir="rtl"] {
  direction: rtl;
}

[dir="rtl"] .language-select {
  background-position: left 12px center;
  padding-left: 32px;
  padding-right: 12px;
}

[dir="rtl"] .entry-translation {
  padding-left: 0;
  padding-right: var(--space-md);
  border-left: none;
  border-right: 2px solid var(--color-accent-primary);
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Animated gradient background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 40%, rgba(99, 102, 241, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* ========================================
   Layout
   ======================================== */

.app-container {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-lg);
  gap: var(--space-lg);
}

/* ========================================
   Header
   ======================================== */

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-glass);
  backdrop-filter: blur(20px);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 600;
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--color-success);
}

.status-indicator.disconnected {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--color-error);
}

.status-indicator.connecting {
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.2);
  color: var(--color-warning);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: currentColor;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* ========================================
   Main Content
   ======================================== */

.main-content {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-lg);
}

/* ========================================
   Sidebar / Controls
   ======================================== */

.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.control-panel {
  background: var(--color-bg-glass);
  backdrop-filter: blur(20px);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.panel-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-md);
}

/* Language Selector */
.language-selector {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.language-select {
  width: 100%;
  padding: var(--space-md);
  background: var(--color-bg-tertiary);
  border: var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23999' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.language-select:hover {
  border-color: rgba(99, 102, 241, 0.3);
}

.language-select:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.swap-icon {
  display: flex;
  justify-content: center;
  padding: var(--space-sm);
  color: var(--color-text-tertiary);
}

/* Recording Button */
.record-button {
  width: 100%;
  padding: var(--space-lg);
  background: var(--color-accent-gradient);
  border: none;
  border-radius: var(--radius-lg);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  transition: var(--transition-normal);
  box-shadow: var(--shadow-glow);
}

.record-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 60px rgba(99, 102, 241, 0.25);
}

.record-button:active {
  transform: translateY(0);
}

.record-button.recording {
  background: var(--color-error);
  animation: recordingPulse 1.5s infinite;
}

@keyframes recordingPulse {

  0%,
  100% {
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
  }

  50% {
    box-shadow: 0 0 40px rgba(239, 68, 68, 0.5);
  }
}

.mic-icon {
  font-size: 1.25rem;
}

/* Audio Visualizer */
.audio-visualizer {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 3px;
  height: 40px;
  padding: var(--space-md);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
}

.visualizer-bar {
  width: 4px;
  background: var(--color-accent-gradient);
  border-radius: 2px;
  transition: height 100ms ease;
}

/* ========================================
   Transcript Area
   ======================================== */

.transcript-container {
  background: var(--color-bg-glass);
  backdrop-filter: blur(20px);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.transcript-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  border-bottom: var(--border-subtle);
}

.transcript-title {
  font-weight: 600;
}

.transcript-actions {
  display: flex;
  gap: var(--space-sm);
}

.action-btn {
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-tertiary);
  border: var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

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

.transcript-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Transcript Entry */
.transcript-entry {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.speaker-badge {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
}

.speaker-badge.speaker-1 {
  background: var(--color-speaker-1);
}

.speaker-badge.speaker-2 {
  background: var(--color-speaker-2);
}

.speaker-badge.speaker-3 {
  background: var(--color-speaker-3);
}

.speaker-badge.speaker-4 {
  background: var(--color-speaker-4);
}

.entry-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.entry-meta {
  display: flex;
  gap: var(--space-sm);
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
}

.entry-original {
  font-size: 1rem;
  color: var(--color-text-primary);
}

.entry-translation {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  padding-left: var(--space-md);
  border-left: 2px solid var(--color-accent-primary);
}

/* Partial/Typing indicator */
.entry-partial {
  opacity: 0.6;
}

.entry-partial .entry-original::after {
  content: '▋';
  animation: blink 0.8s infinite;
}

@keyframes blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

/* Empty State */
.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-tertiary);
  text-align: center;
  gap: var(--space-md);
}

.empty-state-icon {
  font-size: 3rem;
  opacity: 0.5;
}

/* ========================================
   Footer
   ======================================== */

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-glass);
  backdrop-filter: blur(20px);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
}

.session-info {
  display: flex;
  gap: var(--space-lg);
}

.info-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 900px) {
  .main-content {
    grid-template-columns: 1fr;
  }

  .sidebar {
    order: 1;
  }

  .transcript-container {
    min-height: 400px;
  }
}

@media (max-width: 600px) {
  .app-container {
    padding: var(--space-md);
    gap: var(--space-md);
  }

  .header {
    flex-direction: column;
    gap: var(--space-md);
  }
}

/* ========================================
   Scrollbar
   ======================================== */

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}