/* ==========================================================================
   HIGH-CONTRAST DUAL THEME (LIGHT & DARK MODE) DESIGN SYSTEM
   Focused on Maximum Readability, Sharp Contrast, & Ergonomic Theme Switching
   ========================================================================== */

/* DARK THEME (DEFAULT) */
html[data-theme="dark"] {
  --color-bg-main: #0b0f17;
  --color-bg-card: #131c2d;
  --color-bg-elevated: #1a253b;
  --color-bg-display: #090e17;

  --color-border-default: #2a3a55;
  --color-border-strong: #3b4e6f;

  --color-text-primary: #ffffff;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;

  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: rgba(37, 99, 235, 0.2);

  --color-dropzone-bg: rgba(15, 23, 42, 0.6);
  --color-dropzone-hover: rgba(37, 99, 235, 0.12);
  
  --color-select-bg: #0f172a;
}

/* LIGHT THEME */
html[data-theme="light"] {
  --color-bg-main: #f1f5f9;
  --color-bg-card: #ffffff;
  --color-bg-elevated: #e2e8f0;
  --color-bg-display: #f8fafc;

  --color-border-default: #cbd5e1;
  --color-border-strong: #94a3b8;

  --color-text-primary: #0f172a;
  --color-text-secondary: #334155;
  --color-text-muted: #64748b;

  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: rgba(37, 99, 235, 0.12);

  --color-dropzone-bg: #f8fafc;
  --color-dropzone-hover: rgba(37, 99, 235, 0.08);

  --color-select-bg: #ffffff;
}

:root {
  --color-accent-teal: #0d9488;
  --color-accent-emerald: #10b981;
  --color-accent-rose: #ef4444;

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

  --radius-xl: 16px;
  --radius-lg: 12px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --radius-pill: 9999px;
}

/* Global Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-main);
  color: var(--color-text-primary);
  min-height: 100vh;
  line-height: 1.5;
  transition: background-color 0.2s ease, color 0.2s ease;
  -webkit-font-smoothing: antialiased;
}

/* App Main Layout */
.app-layout {
  max-width: 1300px;
  margin: 0 auto;
  padding: 24px 20px 48px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   NAVBAR & LOGO & THEME TOGGLE
   ========================================================================== */

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border-default);
  margin-bottom: 20px;
  gap: 16px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon-box {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-primary), #1d4ed8);
  color: #ffffff;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.brand-mic-svg {
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.brand-names {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-main {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.version-tag {
  font-size: 11px;
  font-weight: 700;
  background: var(--color-primary-light);
  color: #2563eb;
  border: 1px solid rgba(59, 130, 246, 0.4);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Single Theme Toggle Button */
button.theme-toggle-single-btn,
.theme-toggle-single-btn {
  all: unset;
  -webkit-appearance: none !important;
  -moz-appearance: none !important;
  appearance: none !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  background: var(--color-bg-card) !important;
  border: 1px solid var(--color-border-strong) !important;
  color: var(--color-text-primary) !important;
  padding: 6px 16px !important;
  border-radius: var(--radius-pill) !important;
  font-family: var(--font-sans) !important;
  font-size: 12.5px !important;
  font-weight: 600 !important;
  line-height: 1 !important;
  cursor: pointer !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12) !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
  user-select: none !important;
  box-sizing: border-box !important;
}

button.theme-toggle-single-btn:hover,
.theme-toggle-single-btn:hover {
  border-color: var(--color-primary) !important;
  background: var(--color-bg-elevated) !important;
  box-shadow: 0 3px 10px rgba(37, 99, 235, 0.25) !important;
}

.theme-btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.theme-btn-icon svg {
  display: block;
}

.status-indicator-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}

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

.status-text {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   TAB NAVIGATION
   ========================================================================== */

.tab-container {
  margin-bottom: 24px;
}

.tab-bar {
  display: inline-flex;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  padding: 4px;
  border-radius: var(--radius-lg);
  gap: 4px;
}

.tab-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

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

.tab-item.active {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

/* ==========================================================================
   MAIN WORKSPACE GRID & CARDS
   ========================================================================== */

.main-content {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
  flex: 1;
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.card-header {
  margin-bottom: 20px;
}

.card-header h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.card-header p {
  font-size: 13.5px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* ==========================================================================
   FILE UPLOAD MODE
   ========================================================================== */

.form-field {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.select-box {
  position: relative;
}

.form-select {
  width: 100%;
  background: var(--color-select-bg);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-primary);
  padding: 12px 14px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  outline: none;
  cursor: pointer;
}

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

/* Clean Dropzone */
.file-dropzone {
  border: 2px dashed var(--color-border-strong);
  background: var(--color-dropzone-bg);
  border-radius: var(--radius-lg);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: all 0.2s ease;
}

.file-dropzone:hover, .file-dropzone.dragover {
  border-color: var(--color-primary);
  background: var(--color-dropzone-hover);
}

.file-dropzone input[type="file"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.dropzone-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

.dropzone-prompt {
  font-size: 14px;
  color: var(--color-text-primary);
}

.dropzone-prompt strong {
  color: var(--color-primary);
}

.dropzone-sub {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Selected File State */
.selected-file-box {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.file-info {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  padding: 12px 16px;
  border-radius: var(--radius-md);
}

.file-type-icon {
  font-size: 22px;
}

.file-name-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.file-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-size {
  font-size: 12px;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
}

.btn-remove-file {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 16px;
  cursor: pointer;
  padding: 4px 8px;
}

.btn-remove-file:hover {
  color: var(--color-accent-rose);
}

/* Primary Action Button */
.btn-primary {
  width: 100%;
  background: var(--color-primary);
  border: none;
  color: #ffffff;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background-color 0.15s ease;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Processing Box */
.processing-state {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--color-primary-light);
  border: 1px solid var(--color-primary);
  padding: 14px 18px;
  border-radius: var(--radius-md);
}

.loader-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(37, 99, 235, 0.3);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.processing-text strong {
  display: block;
  font-size: 14px;
  color: var(--color-text-primary);
}

.processing-text span {
  font-size: 12px;
  color: var(--color-text-secondary);
}

/* ==========================================================================
   LIVE MIC MODE
   ========================================================================== */

.mic-stage-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 44px 20px;
  background: var(--color-bg-display);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  gap: 20px;
}

.mic-avatar-circle {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--color-bg-card);
  border: 2px solid var(--color-border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.mic-wave-bars {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 36px;
}

.mic-wave-bars span {
  width: 4px;
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  animation: wave-bounce 1s ease-in-out infinite alternate;
}

.mic-wave-bars span:nth-child(2) { animation-delay: 0.2s; }
.mic-wave-bars span:nth-child(3) { animation-delay: 0.4s; }
.mic-wave-bars span:nth-child(4) { animation-delay: 0.1s; }
.mic-wave-bars span:nth-child(5) { animation-delay: 0.3s; }

@keyframes wave-bounce {
  0% { height: 20%; }
  100% { height: 100%; }
}

.mic-status-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.btn-mic-action {
  background: var(--color-primary);
  border: none;
  color: #ffffff;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.btn-mic-action:hover {
  background: var(--color-primary-hover);
}

.btn-mic-action.recording {
  background: var(--color-accent-rose);
}

/* ==========================================================================
   OUTPUT / TRANSCRIPT VIEW
   ========================================================================== */

.panel-right {
  display: flex;
  flex-direction: column;
}

.output-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border-default);
  gap: 12px;
  flex-wrap: wrap;
}

.output-title-box {
  display: flex;
  align-items: center;
  gap: 10px;
}

.output-title-box h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.language-badge {
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-mono);
  background: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid rgba(59, 130, 246, 0.4);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.output-actions {
  display: flex;
  gap: 8px;
}

.btn-secondary {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-secondary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

.btn-highlight {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-danger {
  border-color: rgba(239, 68, 68, 0.4);
  color: var(--color-accent-rose);
}

.btn-secondary.btn-danger:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--color-accent-rose);
}

/* Transcript Text Box */
.transcript-display-area {
  flex: 1;
  background: var(--color-bg-display);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  padding: 20px;
  min-height: 380px;
  max-height: 520px;
  overflow-y: auto;
}

.transcript-display-area::-webkit-scrollbar {
  width: 6px;
}
.transcript-display-area::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: 3px;
}

.empty-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  padding: 40px 20px;
}

.placeholder-icon {
  font-size: 40px;
  margin-bottom: 12px;
  opacity: 0.6;
}

.empty-placeholder h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.empty-placeholder p {
  font-size: 13.5px;
  color: var(--color-text-secondary);
  max-width: 340px;
}

.text-paragraph-view {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--color-text-primary);
  white-space: pre-wrap;
  word-break: break-word;
}

/* Timestamp View */
.timestamps-list-view {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.segment-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-default);
  border-left: 3px solid var(--color-primary);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
}

.segment-time {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.segment-text {
  font-size: 14.5px;
  color: var(--color-text-primary);
  line-height: 1.6;
}

/* Bottom Bar */
.output-bottombar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border-default);
}

.view-switch-group {
  display: flex;
  background: var(--color-bg-display);
  border: 1px solid var(--color-border-default);
  padding: 3px;
  border-radius: var(--radius-md);
  gap: 2px;
}

.view-switch-btn {
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
}

.view-switch-btn.active {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
}

.word-counter-badge {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
}

.app-footer {
  margin-top: 36px;
  text-align: center;
  font-size: 12.5px;
  color: var(--color-text-secondary);
}

.hidden {
  display: none !important;
}

/* ==========================================================================
   RESPONSIVE LAYOUT (LAPTOP, IPAD, TABLET, MOBILE PHONES)
   ========================================================================== */

@media (max-width: 992px) {
  .main-content {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .transcript-display-area {
    min-height: 300px;
    max-height: 420px;
  }
}

@media (max-width: 600px) {
  .app-layout {
    padding: 16px 12px 32px;
  }

  .navbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .navbar-right {
    width: 100%;
    justify-content: space-between;
  }

  .tab-bar {
    width: 100%;
  }

  .tab-item {
    flex: 1;
    justify-content: center;
    padding: 10px 8px;
    font-size: 13px;
  }

  .card {
    padding: 16px;
  }

  .output-topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .output-actions {
    width: 100%;
  }

  .btn-secondary {
    flex: 1;
    justify-content: center;
  }

  .output-bottombar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .view-switch-group {
    justify-content: center;
  }

  .word-counter-badge {
    text-align: center;
  }
}