@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Space+Mono:wght@400;700&display=swap');

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #0f1528;
  --bg-card: #131929;
  --bg-card-hover: #1a2236;
  --accent: #4f8ef7;
  --accent-2: #7c5df4;
  --accent-glow: rgba(79,142,247,0.18);
  --accent-gradient: linear-gradient(135deg, #4f8ef7 0%, #7c5df4 100%);
  --success: #22d3a0;
  --warning: #f59e0b;
  --danger: #ef4444;
  --text-primary: #e8edf8;
  --text-secondary: #8b97b8;
  --text-muted: #4a5578;
  --border: rgba(255,255,255,0.07);
  --border-active: rgba(79,142,247,0.4);
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 40px rgba(79,142,247,0.15);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --sidebar-width: 260px;
  --header-height: 64px;
  --font-main: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ============ AUTH PAGES ============ */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
  padding: 24px;
}

.auth-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(79,142,247,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 90%, rgba(124,93,244,0.1) 0%, transparent 60%);
  pointer-events: none;
}

.auth-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  width: 100%;
  max-width: 440px;
  position: relative;
  box-shadow: var(--shadow), var(--shadow-glow);
  animation: slideUp 0.5s ease;
}

@keyframes slideUp {
  from { opacity:0; transform: translateY(20px); }
  to { opacity:1; transform: translateY(0); }
}

.auth-logo {
  text-align: center;
  margin-bottom: 32px;
}

.auth-logo .logo-icon {
  width: 56px; height: 56px;
  background: var(--accent-gradient);
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  box-shadow: 0 8px 24px rgba(79,142,247,0.3);
}

.auth-logo .logo-icon svg { width: 28px; height: 28px; color: white; }

.auth-logo h1 {
  font-size: 22px;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.auth-logo p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.auth-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}

.auth-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* ============ FORM ELEMENTS ============ */
.form-group { margin-bottom: 18px; }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 7px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 14px;
  transition: all 0.2s;
  outline: none;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--bg-card);
}

.form-control::placeholder { color: var(--text-muted); }

select.form-control {
  cursor: pointer;
  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='%238b97b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.input-group {
  position: relative;
}

.input-group .form-control { padding-right: 44px; }

.input-group .input-icon {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s;
}

.input-group .input-icon:hover { color: var(--accent); }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 4px 16px rgba(79,142,247,0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(79,142,247,0.45);
}

.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-active);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

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

.btn-danger {
  background: rgba(239,68,68,0.15);
  color: var(--danger);
  border: 1px solid rgba(239,68,68,0.3);
}

.btn-danger:hover {
  background: rgba(239,68,68,0.25);
}

.btn-success {
  background: rgba(34,211,160,0.15);
  color: var(--success);
  border: 1px solid rgba(34,211,160,0.3);
}

.btn-full { width: 100%; }

.btn-sm { padding: 7px 14px; font-size: 13px; }

.btn-lg { padding: 15px 32px; font-size: 16px; }

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ============ APP LAYOUT ============ */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ============ SIDEBAR ============ */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-logo {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo .logo-mark {
  width: 40px; height: 40px;
  background: var(--accent-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(79,142,247,0.3);
}

.sidebar-logo .logo-mark svg { width: 20px; height: 20px; color: white; }

.sidebar-logo .logo-text {
  font-size: 15px;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.3px;
}

.sidebar-logo .logo-tagline {
  font-size: 11px;
  color: var(--text-muted);
  display: block;
  font-weight: 400;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
}

.nav-section {
  margin-bottom: 24px;
}

.nav-section-title {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 0 10px;
  margin-bottom: 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  position: relative;
  margin-bottom: 2px;
}

.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }

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

.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid var(--border-active);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 60%;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
}

.nav-badge {
  margin-left: auto;
  background: var(--accent);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 20px;
}

.sidebar-footer {
  padding: 16px 12px;
  border-top: 1px solid var(--border);
}

.user-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.user-avatar {
  width: 36px; height: 36px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.user-info { flex: 1; min-width: 0; }
.user-name { font-size: 13px; font-weight: 600; truncate: ellipsis; overflow: hidden; white-space: nowrap; }
.user-role { font-size: 11px; color: var(--text-muted); }

.user-card-actions { display: flex; gap: 4px; }
.user-card-actions a {
  width: 28px; height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  color: var(--text-muted);
  transition: all 0.2s;
  text-decoration: none;
}
.user-card-actions a:hover { background: var(--bg-secondary); color: var(--text-primary); }
.user-card-actions a svg { width: 14px; height: 14px; }

/* ============ MAIN CONTENT ============ */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ============ TOPBAR ============ */
.topbar {
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
}

.topbar-left { display: flex; align-items: center; gap: 16px; }

.page-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.page-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

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

.topbar-btn {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  position: relative;
}

.topbar-btn:hover { color: var(--text-primary); border-color: var(--border-active); }
.topbar-btn svg { width: 16px; height: 16px; }

.notif-dot {
  position: absolute;
  top: 6px; right: 6px;
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
  border: 1.5px solid var(--bg-secondary);
}

.credits-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.credits-badge .credit-num { color: var(--accent); }

/* ============ PAGE CONTENT ============ */
.page-content { padding: 28px; flex: 1; }

/* ============ CARDS ============ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all 0.2s;
}

.card:hover { border-color: rgba(255,255,255,0.1); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

.card-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ============ STATS CARDS ============ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: all 0.2s;
  animation: fadeIn 0.4s ease both;
}

.stat-card:hover {
  border-color: var(--border-active);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.stat-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon svg { width: 20px; height: 20px; }

.stat-icon.blue { background: rgba(79,142,247,0.15); color: var(--accent); }
.stat-icon.purple { background: rgba(124,93,244,0.15); color: var(--accent-2); }
.stat-icon.green { background: rgba(34,211,160,0.15); color: var(--success); }
.stat-icon.orange { background: rgba(245,158,11,0.15); color: var(--warning); }

.stat-value {
  font-size: 26px;
  font-weight: 800;
  font-family: var(--font-mono);
  letter-spacing: -1px;
  line-height: 1.1;
}

.stat-label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 2px;
}

.stat-change {
  font-size: 11px;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  margin-top: 4px;
  padding: 2px 7px;
  border-radius: 20px;
  font-weight: 600;
}

.stat-change.up { color: var(--success); background: rgba(34,211,160,0.1); }
.stat-change.down { color: var(--danger); background: rgba(239,68,68,0.1); }

/* ============ TTS MAIN UI ============ */
.tts-wrap {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  align-items: start;
}

.tts-text-area {
  position: relative;
}

.tts-textarea {
  width: 100%;
  min-height: 280px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.8;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s;
}

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

.tts-char-count {
  position: absolute;
  bottom: 14px;
  right: 16px;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.tts-char-count.warning { color: var(--warning); }
.tts-char-count.danger { color: var(--danger); }

.tts-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.tts-toolbar .btn-sm {
  font-size: 12px;
  padding: 6px 12px;
}

.tts-settings-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.setting-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}

.setting-block-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-muted);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.setting-block-title svg { width: 12px; height: 12px; }

/* Voice cards grid */
.voice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.voice-card {
  padding: 10px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

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

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

.voice-card .voice-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}

.voice-card .voice-lang {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 2px;
}

.voice-card .voice-emoji { font-size: 18px; margin-bottom: 4px; }

/* Emotion buttons */
.emotion-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.emotion-btn {
  padding: 6px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 5px;
}

.emotion-btn:hover { border-color: var(--accent); color: var(--accent); }

.emotion-btn.active {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}

/* Range sliders */
.range-group { margin-bottom: 12px; }

.range-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}

.range-label span { color: var(--accent); font-family: var(--font-mono); }

input[type="range"] {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  background: var(--bg-secondary);
  border-radius: 2px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(79,142,247,0.5);
  transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }

/* Generate button */
.generate-btn {
  width: 100%;
  padding: 16px;
  background: var(--accent-gradient);
  border: none;
  border-radius: var(--radius);
  color: white;
  font-family: var(--font-main);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 4px 20px rgba(79,142,247,0.35);
  letter-spacing: -0.2px;
}

.generate-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(79,142,247,0.45); }
.generate-btn:active { transform: translateY(0); }
.generate-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.generate-btn svg { width: 20px; height: 20px; }

/* Audio Player */
.audio-player-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  animation: fadeIn 0.4s ease;
}

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

.audio-player-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

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

.audio-waveform {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 48px;
  margin-bottom: 16px;
  overflow: hidden;
}

.waveform-bar {
  flex: 1;
  background: var(--accent);
  border-radius: 2px;
  opacity: 0.4;
  transition: height 0.1s;
}

.waveform-bar.active { opacity: 1; }

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

.play-btn {
  width: 44px; height: 44px;
  background: var(--accent-gradient);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(79,142,247,0.35);
  flex-shrink: 0;
}

.play-btn:hover { transform: scale(1.08); box-shadow: 0 6px 20px rgba(79,142,247,0.45); }
.play-btn svg { width: 18px; height: 18px; }

.audio-progress {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.progress-bar {
  flex: 1;
  height: 4px;
  background: var(--bg-secondary);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: 2px;
  width: 0%;
  transition: width 0.1s;
}

/* ============ TABLE ============ */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
}

thead tr {
  border-bottom: 1px solid var(--border);
}

thead th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-muted);
}

tbody tr {
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: background 0.15s;
}

tbody tr:hover { background: var(--bg-card-hover); }

tbody td {
  padding: 12px 14px;
  font-size: 13px;
  color: var(--text-secondary);
}

.td-main { color: var(--text-primary); font-weight: 500; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.badge-green { background: rgba(34,211,160,0.12); color: var(--success); }
.badge-blue { background: rgba(79,142,247,0.12); color: var(--accent); }
.badge-orange { background: rgba(245,158,11,0.12); color: var(--warning); }
.badge-red { background: rgba(239,68,68,0.12); color: var(--danger); }
.badge-gray { background: rgba(255,255,255,0.06); color: var(--text-muted); }

/* ============ SETTINGS TABS ============ */
.settings-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-secondary);
  padding: 4px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  background: none;
  font-family: var(--font-main);
  display: flex;
  align-items: center;
  gap: 7px;
}

.tab-btn svg { width: 14px; height: 14px; }

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

.tab-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.3s ease; }

/* ============ TOGGLE SWITCH ============ */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.toggle-row:last-child { border-bottom: none; }

.toggle-info h4 { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.toggle-info p { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

.toggle {
  position: relative;
  width: 42px;
  height: 24px;
  flex-shrink: 0;
}

.toggle input { display: none; }

.toggle-track {
  position: absolute; inset: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.toggle-track::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 16px; height: 16px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: all 0.2s;
}

.toggle input:checked + .toggle-track {
  background: rgba(79,142,247,0.2);
  border-color: var(--accent);
}

.toggle input:checked + .toggle-track::after {
  transform: translateX(18px);
  background: var(--accent);
}

/* ============ API KEY BOX ============ */
.api-key-box {
  display: flex;
  gap: 8px;
  align-items: center;
}

.api-key-input {
  flex: 1;
  padding: 11px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s;
}

.api-key-input:focus { border-color: var(--accent); }

/* ============ ALERTS ============ */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 16px;
}

.alert svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 1px; }

.alert-success { background: rgba(34,211,160,0.1); border: 1px solid rgba(34,211,160,0.2); color: var(--success); }
.alert-error { background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.2); color: var(--danger); }
.alert-info { background: rgba(79,142,247,0.1); border: 1px solid rgba(79,142,247,0.2); color: var(--accent); }
.alert-warning { background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.2); color: var(--warning); }

/* ============ LOADING STATES ============ */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
  position: fixed; inset: 0;
  background: rgba(10,14,26,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  backdrop-filter: blur(4px);
}

.loading-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  text-align: center;
}

.loading-box .big-spinner {
  width: 48px; height: 48px;
  border: 3px solid rgba(79,142,247,0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 16px;
}

.pulse-dots { display: flex; gap: 6px; justify-content: center; margin-top: 12px; }
.pulse-dots span {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 1.4s ease infinite;
}
.pulse-dots span:nth-child(2) { animation-delay: 0.2s; }
.pulse-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes pulse {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

/* ============ EMPTY STATE ============ */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  width: 64px; height: 64px;
  background: var(--bg-secondary);
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.empty-state .empty-icon svg { width: 28px; height: 28px; }
.empty-state h3 { font-size: 16px; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.empty-state p { font-size: 13px; }

/* ============ GRID UTILS ============ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mt-16 { margin-top: 16px; }
.text-sm { font-size: 13px; }
.text-xs { font-size: 11px; }
.text-muted { color: var(--text-secondary); }
.text-accent { color: var(--accent); }
.font-mono { font-family: var(--font-mono); }

/* ============ INSTALL WIZARD ============ */
.install-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

.install-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0;
  width: 100%;
  max-width: 560px;
  box-shadow: var(--shadow), var(--shadow-glow);
  animation: slideUp 0.5s ease;
  overflow: hidden;
}

.install-header {
  padding: 32px 40px 24px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(79,142,247,0.07) 0%, rgba(124,93,244,0.07) 100%);
}

.install-steps {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 20px;
}

.install-step {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.step-num {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  border: 2px solid var(--border);
  color: var(--text-muted);
}

.install-step.done .step-num { background: var(--success); border-color: var(--success); color: white; }
.install-step.active .step-num { background: var(--accent); border-color: var(--accent); color: white; }

.step-label { font-size: 12px; color: var(--text-muted); font-weight: 500; }
.install-step.active .step-label { color: var(--text-primary); }

.step-line {
  flex: 1;
  height: 1px;
  background: var(--border);
  margin: 0 8px;
}

.install-body { padding: 32px 40px; }
.install-footer { padding: 20px 40px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }

.req-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.req-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 13px;
}
.req-item .req-status { margin-left: auto; }
.req-ok { color: var(--success); }
.req-fail { color: var(--danger); }
.req-icon svg { width: 14px; height: 14px; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .tts-wrap { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0,0,0,0.5);
  }
  .main-content { margin-left: 0; }
  .page-content { padding: 16px; }
  .topbar { padding: 0 16px; }
  .auth-card { padding: 32px 24px; }
  .install-body { padding: 24px; }
  .install-footer { padding: 16px 24px; }
}

/* ============ MISC ============ */
a { color: inherit; }
.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.text-center { text-align: center; }
.hidden { display: none !important; }