/* ═══════════════════════════════════════════════════════════════════════════
   Expression Analyser — Premium Dark Theme CSS
   Professional AI Analytics SaaS Dashboard
   ═══════════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── Design Tokens ─────────────────────────────────────────────────────────── */
:root {
  /* Dark theme (default) */
  --bg-primary:     #0a0f1a;
  --bg-secondary:   #111827;
  --bg-card:        rgba(17, 24, 39, 0.85);
  --bg-elevated:    rgba(30, 41, 59, 0.6);
  --bg-hover:       rgba(30, 41, 59, 0.8);
  --bg-input:       rgba(15, 23, 42, 0.8);

  --text-primary:   #f1f5f9;
  --text-secondary: #94a3b8;
  --text-dark:      #e2e8f0;
  --text-light:     #64748b;

  --border:         rgba(148, 163, 184, 0.12);
  --border-color:   rgba(148, 163, 184, 0.15);
  --border-focus:   rgba(99, 102, 241, 0.5);

  --primary:        #6366f1;
  --primary-dark:   #4f46e5;
  --primary-color:  #6366f1;
  --primary-glow:   rgba(99, 102, 241, 0.25);
  --secondary:      #10b981;
  --accent:         #6ee7b7;

  --success:        #10b981;
  --danger:         #ef4444;
  --warning:        #f59e0b;
  --info:           #3b82f6;

  --shadow:         0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-hover:   0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow:    0 0 20px rgba(99, 102, 241, 0.15);

  --glass-bg:       rgba(17, 24, 39, 0.7);
  --glass-border:   rgba(148, 163, 184, 0.1);
  --glass-blur:     blur(16px);

  --radius:         12px;
  --radius-lg:      16px;
  --radius-sm:      8px;
  --fm:             'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --transition:     all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light theme override */
[data-theme="light"] {
  --bg-primary:     #f8fafc;
  --bg-secondary:   #ffffff;
  --bg-card:        rgba(255, 255, 255, 0.95);
  --bg-elevated:    rgba(241, 245, 249, 0.8);
  --bg-hover:       rgba(241, 245, 249, 1);
  --bg-input:       rgba(248, 250, 252, 0.9);
  --text-primary:   #0f172a;
  --text-secondary: #475569;
  --text-dark:      #1e293b;
  --text-light:     #64748b;
  --border:         rgba(203, 213, 225, 0.5);
  --border-color:   rgba(203, 213, 225, 0.6);
  --glass-bg:       rgba(255, 255, 255, 0.8);
  --glass-border:   rgba(203, 213, 225, 0.3);
  --shadow:         0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-hover:   0 4px 16px rgba(0, 0, 0, 0.12);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--fm);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

/* Subtle background grid pattern */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 50% 80%, rgba(99, 102, 241, 0.02) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ── Container ─────────────────────────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* ════════════════════════════════════════════════════════════════════════════
   NAVIGATION
   ════════════════════════════════════════════════════════════════════════════ */

.navbar {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  padding: 12px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  transition: var(--transition);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
  transition: transform 0.3s;
}

.logo-icon:hover { transform: rotate(10deg) scale(1.1); }

.brand-name { letter-spacing: -0.02em; }

.nav-menu {
  display: flex;
  list-style: none;
  gap: 4px;
}

.nav-menu a {
  padding: 8px 16px;
  text-decoration: none;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  font-weight: 500;
  font-size: 14px;
  position: relative;
}

.nav-menu a:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.nav-menu a.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text-primary);
  padding: 8px;
}

/* ════════════════════════════════════════════════════════════════════════════
   BUTTONS
   ════════════════════════════════════════════════════════════════════════════ */

.btn {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--fm);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.btn:hover::after { opacity: 1; }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

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

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger), #dc2626);
  color: white;
}

.btn-danger:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3); }

.btn-large { padding: 14px 28px; font-size: 16px; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-block { width: 100%; justify-content: center; margin-bottom: 10px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none !important; }

/* ════════════════════════════════════════════════════════════════════════════
   CARDS (glassmorphism)
   ════════════════════════════════════════════════════════════════════════════ */

.card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.card:hover {
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: var(--shadow-hover);
}

.card h3 {
  margin: 0 0 14px 0;
  font-size: 0.95rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.card h3 i { color: var(--primary); font-size: 0.95rem; }

/* ════════════════════════════════════════════════════════════════════════════
   HERO SECTION
   ════════════════════════════════════════════════════════════════════════════ */

.hero {
  padding: 100px 0 80px;
  background: linear-gradient(160deg, var(--bg-primary) 0%, rgba(99,102,241,0.08) 50%, var(--bg-primary) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99,102,241,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  margin-bottom: 1rem;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  position: relative;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  font-weight: 400;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 50px;
}

.hero-stats {
  display: flex;
  gap: 60px;
  justify-content: center;
  margin-top: 20px;
}

.stat-item { text-align: center; }

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 0.25rem;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

/* ════════════════════════════════════════════════════════════════════════════
   FEATURES
   ════════════════════════════════════════════════════════════════════════════ */

.features {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 50px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 28px;
  border-radius: var(--radius);
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(99, 102, 241, 0.3);
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  margin: 0 auto 16px;
  font-size: 24px;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.feature-card h3 {
  margin-bottom: 8px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 14px;
}

/* ════════════════════════════════════════════════════════════════════════════
   HOW IT WORKS / STEPS
   ════════════════════════════════════════════════════════════════════════════ */

.how-it-works { padding: 80px 0; position: relative; z-index: 1; }

.steps {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  margin-top: 40px;
}

.step {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 28px;
  border-radius: var(--radius);
  text-align: center;
  flex: 1;
  max-width: 280px;
  transition: var(--transition);
}

.step:hover { box-shadow: var(--shadow-glow); transform: translateY(-4px); }

.step-number {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800;
  margin: 0 auto 16px;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.step h3 { margin-bottom: 0.5rem; font-size: 1rem; font-weight: 700; color: var(--text-primary); }
.step p { color: var(--text-secondary); font-weight: 400; font-size: 14px; }
.step-arrow { font-size: 28px; color: var(--primary); opacity: 0.5; }

/* CTA */
.cta {
  padding: 80px 0;
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta h2 {
  font-size: 2rem;
  margin-bottom: 24px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 30px 0;
  margin-top: 60px;
  position: relative;
  z-index: 1;
}

.footer-bottom { text-align: center; color: var(--text-secondary); font-size: 13px; }
.footer-bottom p { margin: 0; }

/* ════════════════════════════════════════════════════════════════════════════
   PAGE LAYOUT
   ════════════════════════════════════════════════════════════════════════════ */

.page-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 20px;
  position: relative;
  z-index: 1;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  padding: 20px 24px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.page-header h1 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.page-header h1 i { color: var(--primary); font-size: 1.4rem; }
.page-header p { color: var(--text-secondary); font-size: 0.9rem; font-weight: 400; }

.header-actions { display: flex; gap: 10px; align-items: center; }

/* ════════════════════════════════════════════════════════════════════════════
   LIVE ANALYSIS
   ════════════════════════════════════════════════════════════════════════════ */

.live-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 20px;
}

.video-section { display: flex; flex-direction: column; gap: 16px; }

.video-container {
  position: relative;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16/9;
  border: 1px solid var(--border);
}

#webcam, #overlay { width: 100%; height: 100%; object-fit: cover; }

.video-overlay { position: absolute; top: 0; left: 0; pointer-events: none; }

.video-status {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  color: white;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.video-controls { display: flex; gap: 8px; flex-wrap: wrap; }

.webrtc-status-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
}

.rtc-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--danger);
  transition: var(--transition);
}

.rtc-dot.connected {
  background: var(--success);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 4px rgba(16, 185, 129, 0.3); }
  50% { box-shadow: 0 0 12px rgba(16, 185, 129, 0.6); }
}

.rtc-dot.disconnected { background: var(--danger); }

.webrtc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 10px;
}

.participant-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 10px;
  transition: var(--transition);
}

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

.analysis-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 20px;
  border-radius: var(--radius);
}

.analysis-card h3 {
  margin: 0 0 14px;
  font-size: 0.95rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
}

.analysis-card h3 i { color: var(--primary); }

.current-emotion {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  padding: 16px;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.emotion-icon { font-size: 42px; }
.emotion-name { font-size: 1.3rem; font-weight: 800; color: var(--primary); letter-spacing: -0.01em; }
.emotion-confidence { font-size: 0.9rem; font-weight: 600; color: var(--secondary); }

/* Emotion bars */
.emotion-bars { display: flex; flex-direction: column; gap: 8px; }

.emotion-bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.emotion-bar-label {
  min-width: 70px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.emotion-bar-track {
  flex: 1;
  height: 8px;
  background: var(--bg-elevated);
  border-radius: 4px;
  overflow: hidden;
}

.emotion-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.emotion-bar-pct {
  min-width: 36px;
  text-align: right;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

/* Sidebar */
.sidebar { display: flex; flex-direction: column; gap: 16px; }

.info-grid { display: grid; gap: 8px; }

.info-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 12px;
  background: var(--bg-elevated);
  border-radius: 6px;
  border: 1px solid var(--border);
}

.info-item .label { color: var(--text-secondary); font-weight: 500; font-size: 0.8rem; }
.info-item .value { font-weight: 700; color: var(--primary); font-size: 0.95rem; font-variant-numeric: tabular-nums; }

.setting-group { margin-bottom: 12px; }
.setting-group label { display: block; margin-bottom: 6px; color: var(--text-primary); font-weight: 500; font-size: 13px; }

.setting-group select,
.setting-group input[type="text"],
.setting-group input[type="range"] {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  background: var(--bg-input);
  color: var(--text-primary);
  font-family: var(--fm);
  transition: var(--transition);
}

.setting-group select:focus,
.setting-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

select, input[type="text"] {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-family: var(--fm);
  font-size: 13px;
}

select:focus, input[type="text"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Timeline */
.timeline {
  max-height: 280px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.timeline::-webkit-scrollbar { width: 4px; }
.timeline::-webkit-scrollbar-track { background: transparent; }
.timeline::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.timeline-empty { text-align: center; padding: 20px; color: var(--text-secondary); font-size: 13px; }

.timeline-entry {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  margin-bottom: 4px;
  border-radius: 6px;
  transition: background 0.2s;
  animation: slideIn 0.3s ease;
}

.timeline-entry:hover { background: var(--bg-elevated); }

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.tl-icon {
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  font-size: 14px;
  flex-shrink: 0;
}

.tl-info { flex: 1; min-width: 0; }
.tl-emotion { font-weight: 700; font-size: 13px; display: block; }
.tl-meta { font-size: 11px; color: var(--text-secondary); display: block; }

/* ════════════════════════════════════════════════════════════════════════════
   UPLOAD LAYOUT
   ════════════════════════════════════════════════════════════════════════════ */

.upload-layout { display: grid; grid-template-columns: 1fr 360px; gap: 20px; }
.upload-section { display: flex; flex-direction: column; gap: 16px; }

.upload-area {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--glass-bg);
  position: relative;
  overflow: hidden;
}

.upload-area::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(99,102,241,0.05), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.upload-area:hover, .upload-area.drag-over {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.05);
}

.upload-area:hover::before, .upload-area.drag-over::before { opacity: 1; }

.upload-content { position: relative; z-index: 1; }
.upload-content i { font-size: 42px; color: var(--primary); margin-bottom: 16px; }
.upload-content h3 { margin-bottom: 8px; color: var(--text-primary); font-size: 1.1rem; }
.upload-hint { color: var(--text-secondary); font-size: 13px; margin: 8px 0; }

/* File Queue */
.file-queue {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 16px;
  border-radius: var(--radius);
}

.queue-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.queue-header h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
}

.queue-list { max-height: 350px; overflow-y: auto; margin-bottom: 12px; }

.queue-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  transition: var(--transition);
  border: 1px solid transparent;
}

.queue-item:hover { border-color: var(--border); }

.queue-icon { color: var(--primary); font-size: 16px; width: 32px; text-align: center; }
.queue-info { flex: 1; min-width: 0; }
.queue-name { font-weight: 600; font-size: 13px; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.queue-size { font-size: 11px; color: var(--text-secondary); }
.queue-status { font-size: 12px; font-weight: 600; white-space: nowrap; }

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

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.stat-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 16px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
}

.stat-card:hover { border-color: rgba(99,102,241,0.2); }

.stat-icon {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.stat-value { font-size: 1.4rem; font-weight: 800; color: var(--primary); }

.results-sidebar { display: flex; flex-direction: column; gap: 16px; }

.preview-container {
  background: #0a0f1a;
  border-radius: var(--radius-sm);
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.preview-empty { text-align: center; color: var(--text-secondary); font-size: 13px; }
.preview-info { display: flex; flex-direction: column; gap: 6px; }
.info-row { display: flex; justify-content: space-between; font-size: 13px; color: var(--text-secondary); }

.result-container { min-height: 180px; display: flex; align-items: center; justify-content: center; }
.result-empty { text-align: center; color: var(--text-secondary); font-size: 13px; }

/* ════════════════════════════════════════════════════════════════════════════
   DASHBOARD
   ════════════════════════════════════════════════════════════════════════════ */

.time-select {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-family: var(--fm);
  font-size: 13px;
  cursor: pointer;
}

.dashboard-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.summary-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 22px;
  border-radius: var(--radius-lg);
  display: flex;
  gap: 16px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.summary-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(99, 102, 241, 0.25);
}

.summary-card-gradient-blue   { border-left: 3px solid #6366f1; }
.summary-card-gradient-green  { border-left: 3px solid #10b981; }
.summary-card-gradient-purple { border-left: 3px solid #8b5cf6; }
.summary-card-gradient-orange { border-left: 3px solid #f59e0b; }

.summary-icon-wrapper { position: relative; }

.summary-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  color: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s;
}

.summary-card:hover .summary-icon { transform: scale(1.1) rotate(5deg); }

.summary-icon.happy   { background: linear-gradient(135deg, #6366f1, #4f46e5); }
.summary-icon.info    { background: linear-gradient(135deg, #10b981, #059669); }
.summary-icon.success { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.summary-icon.warning { background: linear-gradient(135deg, #f59e0b, #d97706); }

.summary-content { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.summary-value { font-size: 1.8rem; font-weight: 800; color: var(--text-primary); line-height: 1; margin: 6px 0; letter-spacing: -0.5px; }
.summary-label { color: var(--text-secondary); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; }

.summary-change { font-size: 12px; color: var(--text-secondary); font-weight: 600; display: flex; align-items: center; gap: 4px; margin-top: 6px; }
.summary-change i { font-size: 10px; }
.summary-change.positive { color: var(--success); }
.summary-change.positive i { color: var(--success); }

.summary-sparkline {
  position: absolute;
  bottom: 12px; right: 12px;
  font-size: 40px;
  opacity: 0.04;
  pointer-events: none;
  color: var(--text-primary);
}

/* Charts */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.chart-container {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 20px;
  border-radius: var(--radius);
  height: 320px;
  display: flex;
  flex-direction: column;
}

.chart-container canvas { flex: 1; max-height: 260px; width: 100% !important; }
.chart-container.large { grid-column: 1; }

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.chart-header h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex; align-items: center; gap: 8px;
}

.chart-header h3 i { color: var(--primary); font-size: 1rem; }

.chart-controls { display: flex; gap: 4px; }

.chart-btn {
  padding: 4px 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--fm);
  transition: var(--transition);
}

.chart-btn:hover { border-color: var(--primary); color: var(--primary); }
.chart-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

/* Sessions table */
.table-container {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  margin-bottom: 24px;
  overflow: hidden;
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.table-header h3 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex; align-items: center; gap: 8px;
}

.table-header h3 i { color: var(--primary); }

.table-wrapper { overflow-x: auto; }

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

.data-table th, .data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  font-weight: 700;
  color: var(--text-secondary);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  background: var(--bg-elevated);
}

.data-table td { color: var(--text-primary); font-weight: 500; font-size: 13px; }

.data-table tbody tr { transition: background 0.2s; }
.data-table tbody tr:hover { background: var(--bg-elevated); }

.table-pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-secondary);
}

/* ════════════════════════════════════════════════════════════════════════════
   SETTINGS
   ════════════════════════════════════════════════════════════════════════════ */

.settings-layout { display: grid; grid-template-columns: 220px 1fr; gap: 24px; }

.settings-nav { display: flex; flex-direction: column; gap: 4px; }

.settings-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  font-family: var(--fm);
  transition: var(--transition);
}

.settings-nav-item:hover { background: var(--bg-elevated); color: var(--text-primary); }
.settings-nav-item.active { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: white; box-shadow: 0 2px 8px var(--primary-glow); }
.settings-nav-item i { width: 18px; text-align: center; }

.settings-content { max-width: 700px; }
.settings-section { display: none; }
.settings-section.active { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.settings-section h2 { margin-bottom: 24px; font-size: 1.4rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.02em; }

.settings-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 20px;
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.settings-card h3 {
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex; align-items: center; gap: 8px;
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.06);
}

.setting-item:last-child { border-bottom: none; }
.setting-label strong { display: block; margin-bottom: 3px; font-size: 14px; color: var(--text-primary); }
.setting-label p { font-size: 12px; color: var(--text-secondary); line-height: 1.4; }

.setting-item select {
  min-width: 160px;
  padding: 6px 10px;
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--fm);
  font-size: 13px;
}

/* Toggle switch */
.toggle-switch { position: relative; width: 48px; height: 24px; flex-shrink: 0; }
.toggle-switch input { display: none; }

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 24px;
  transition: 0.3s;
}

.toggle-slider:before {
  position: absolute;
  content: '';
  height: 18px; width: 18px;
  left: 2px; bottom: 2px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: 0.3s;
}

input:checked + .toggle-slider { background: var(--primary); border-color: var(--primary); }
input:checked + .toggle-slider:before { transform: translateX(24px); background: white; }

/* Color picker */
.color-picker input[type="color"] {
  width: 50px; height: 34px;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  background: transparent;
  padding: 2px;
}

/* Range slider */
.range-slider, input[type="range"] {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-elevated);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 2px 6px var(--primary-glow);
}

.checkbox-label { display: flex; align-items: center; gap: 8px; color: var(--text-primary); font-size: 14px; margin-bottom: 6px; cursor: pointer; }
.checkbox-label input[type="checkbox"] { accent-color: var(--primary); }

.emotion-toggles { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }

.info-badge { font-size: 12px; font-weight: 600; color: var(--success); display: flex; align-items: center; gap: 6px; }

.storage-info { display: flex; align-items: center; gap: 12px; }
.storage-bar { flex: 1; height: 8px; background: var(--bg-elevated); border-radius: 4px; overflow: hidden; }
.storage-fill { height: 100%; background: var(--primary); border-radius: 4px; transition: width 0.5s; }
.storage-info span { font-size: 12px; color: var(--text-secondary); white-space: nowrap; font-weight: 600; }

.settings-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* About section */
.about-header { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.about-logo { color: var(--primary); }
.about-header h3 { margin: 0; }
.version { color: var(--text-secondary); font-size: 13px; }
.about-description { color: var(--text-secondary); font-size: 14px; line-height: 1.7; }

.tech-list { display: grid; gap: 8px; }
.tech-item { display: flex; align-items: center; gap: 10px; padding: 8px 12px; background: var(--bg-elevated); border-radius: 6px; font-size: 13px; color: var(--text-primary); }
.tech-item i { color: var(--primary); width: 20px; text-align: center; }

.link-list { display: grid; gap: 6px; }
.link-item { display: flex; align-items: center; gap: 10px; padding: 10px 14px; color: var(--text-secondary); text-decoration: none; border-radius: var(--radius-sm); transition: var(--transition); font-size: 14px; }
.link-item:hover { background: var(--bg-elevated); color: var(--primary); }
.link-item i { width: 20px; text-align: center; }

/* ════════════════════════════════════════════════════════════════════════════
   MODAL
   ════════════════════════════════════════════════════════════════════════════ */

.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal.active { display: flex; }

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  max-width: 560px;
  width: 92%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: modalIn 0.3s ease;
}

@keyframes modalIn { from { opacity: 0; transform: scale(0.95) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }

.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 18px 20px; border-bottom: 1px solid var(--border); }
.modal-header h3 { margin: 0; font-size: 1rem; font-weight: 700; color: var(--text-primary); }
.modal-close { background: none; border: none; color: var(--text-secondary); font-size: 20px; cursor: pointer; padding: 4px; transition: color 0.2s; }
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 20px; }
.modal-body img { width: 100%; border-radius: var(--radius-sm); }
.modal-footer { display: flex; justify-content: flex-end; gap: 10px; padding: 16px 20px; border-top: 1px solid var(--border); }

/* Progress */
.progress-container { margin-bottom: 14px; }
.progress-bar { height: 6px; background: var(--bg-elevated); border-radius: 3px; overflow: hidden; margin-bottom: 8px; }

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 0.3s;
  border-radius: 3px;
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }

.progress-text { display: flex; justify-content: space-between; font-size: 12px; color: var(--text-secondary); }
.processing-status { padding: 10px; background: var(--bg-elevated); border-radius: 6px; text-align: center; color: var(--primary); font-size: 13px; }

/* ════════════════════════════════════════════════════════════════════════════
   TOAST NOTIFICATION
   ════════════════════════════════════════════════════════════════════════════ */

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  padding: 12px 20px;
  border-radius: var(--radius);
  display: none;
  align-items: center;
  gap: 10px;
  z-index: 9999;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  font-size: 14px;
  font-weight: 500;
  min-width: 200px;
  max-width: 400px;
  animation: toastIn 0.4s ease;
  color: var(--text-primary);
}

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

.toast.show, .toast.active { display: flex; }

.toast i { font-size: 18px; flex-shrink: 0; }
.toast-success i, .toast i { color: var(--success); }
.toast-error i { color: var(--danger); }
.toast-warn i { color: var(--warning); }
.toast-info i { color: var(--info); }

.toast-success { border-left: 3px solid var(--success); }
.toast-error { border-left: 3px solid var(--danger); }
.toast-warn { border-left: 3px solid var(--warning); }
.toast-info { border-left: 3px solid var(--info); }

/* ════════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════════════════════ */

@media (max-width: 1200px) {
  .live-layout, .upload-layout { grid-template-columns: 1fr; }
  .charts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2rem; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .features-grid { grid-template-columns: 1fr; }
  .steps { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 12px;
    box-shadow: var(--shadow);
  }

  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 12px 16px; }

  .mobile-toggle { display: block; }

  .settings-layout { grid-template-columns: 1fr; }
  .settings-nav { flex-direction: row; overflow-x: auto; gap: 4px; padding-bottom: 4px; }
  .settings-nav-item { white-space: nowrap; font-size: 13px; padding: 8px 12px; }

  .page-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .dashboard-summary { grid-template-columns: 1fr; }

  .page-header h1 { font-size: 1.3rem; }
}

@media (max-width: 480px) {
  .page-container { padding: 16px 12px; }
  .page-header { padding: 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}