:root {
  --bg-deep-navy: #0B1120;
  --bg-navy-elevated: #111827;
  --bg-navy-card: rgba(30, 41, 59, 0.4);
  
  --accent-electric-blue: #3B82F6;
  --accent-blue-hover: #2563EB;
  --accent-blue-light: #60A5FA;
  
  --text-silver: #E2E8F0;
  --text-muted: #94A3B8;
  --text-white: #FFFFFF;
  
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(59, 130, 246, 0.5);
  
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --info: #0EA5E9;
  --purple: #8B5CF6;
  
  --font-main: 'General Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-deep-navy);
  color: var(--text-silver);
  font-family: var(--font-main);
  line-height: 1.5;
  background-image:
    radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 50% 90%, rgba(16, 185, 129, 0.05) 0%, transparent 45%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes copyBounce {
  0%   { transform: scale(1); }
  30%  { transform: scale(1.12); }
  60%  { transform: scale(0.95); }
  100% { transform: scale(1); }
}
@keyframes popIn {
  0%   { transform: scale(0.85); opacity: 0; }
  70%  { transform: scale(1.05); }
  100% { transform: scale(1); opacity: 1; }
}

.fade-in {
  animation: fadeInUp 0.5s ease forwards;
}
.fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

.page-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-glass);
}
.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.brand-logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.2);
}
.header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.25rem 0;
  color: var(--text-white);
}
.accent-text {
  color: var(--accent-blue-light);
  font-weight: 700;
}
.header-tag {
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--bg-navy-elevated);
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  border: 1px solid var(--border-glass);
}
.header-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: color 0.2s;
}
.header-link:hover {
  color: var(--accent-electric-blue);
}
.icon-sm {
  width: 16px;
  height: 16px;
}

/* Typography */
.sec-title {
  font-size: 1.25rem;
  margin: 0 0 0.25rem 0;
  color: var(--text-white);
  font-weight: 600;
}
.sec-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0 0 1.5rem 0;
}

/* Sections */
.section {
  margin-bottom: 4rem;
}
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 1.5rem;
}

/* Model Grid */
.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.model-card {
  background: var(--bg-navy-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}
.model-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  box-shadow: inset 0 0 0 1px transparent;
  border-radius: 12px;
  transition: all 0.2s ease;
}

.model-card:hover {
  background: var(--bg-navy-elevated);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.35), 0 0 20px rgba(59,130,246,0.07);
}
.model-card.active {
  background: rgba(59, 130, 246, 0.12);
  border-color: var(--accent-electric-blue);
  box-shadow: 0 0 0 1px var(--accent-electric-blue), 0 8px 24px rgba(59,130,246,0.15);
}
.model-card.active::before {
  box-shadow: inset 0 0 0 1px var(--accent-electric-blue);
}

.model-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}
.model-icon svg, .model-icon i {
  width: 20px;
  height: 20px;
}

/* Fallback icons colors */
.fallback-purple { background: rgba(139, 92, 246, 0.15); color: #C4B5FD; }
.fallback-orange { background: rgba(245, 158, 11, 0.15); color: #FCD34D; }
.fallback-blue   { background: rgba(59, 130, 246, 0.15); color: #93C5FD; }
.fallback-green  { background: rgba(16, 185, 129, 0.15); color: #6EE7B7; }
.fallback-white  { background: rgba(255, 255, 255, 0.1); color: #FFF; }

.model-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-silver);
}
.model-tag {
  position: absolute;
  top: 6px;
  right: 6px;
  font-size: 0.65rem;
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
}
.default-tag {
  background: var(--bg-deep-navy);
  color: var(--text-muted);
  border: 1px solid var(--border-glass);
}

/* Prompt Box */
.prompt-container {
  background: var(--bg-navy-elevated);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 1rem;
}
.prompt-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: rgba(0,0,0,0.2);
  border-bottom: 1px solid var(--border-glass);
}
.prompt-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.btn-copy {
  background: var(--bg-navy-card);
  border: 1px solid var(--border-glass);
  color: var(--text-silver);
  padding: 0.3rem 0.75rem;
  border-radius: 6px;
  font-size: 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s;
}
.btn-copy:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-white);
}
.btn-copy.copied {
  background: var(--success);
  color: var(--bg-deep-navy);
  border-color: var(--success);
  animation: copyBounce 0.35s ease forwards;
  box-shadow: 0 0 16px rgba(16, 185, 129, 0.45);
  font-weight: 600;
}
.prompt-body {
  padding: 1rem;
}
pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-silver);
  white-space: pre-wrap;
  word-wrap: break-word;
}
.setup-note {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    background: rgba(59, 130, 246, 0.05);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    border: 1px solid rgba(59, 130, 246, 0.1);
}
.setup-note strong {
    color: var(--accent-blue-light);
}

/* Tabs */
.tab-controls {
  display: flex;
  gap: 0.25rem;
  background: var(--bg-navy-elevated);
  padding: 0.25rem;
  border-radius: 8px;
  border: 1px solid var(--border-glass);
}
.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s;
}
.tab-btn:hover {
  color: var(--text-silver);
}
.tab-btn.active {
  background: var(--bg-navy-card);
  color: var(--text-white);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* Stats Area */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}
.stat-card {
  background: var(--bg-navy-card);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  padding: 1.25rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.25);
  border-color: rgba(255,255,255,0.13);
}
.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}
.stat-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.stat-name {
  font-weight: 600;
  color: var(--text-white);
  font-size: 0.95rem;
}

.badge {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  text-transform: uppercase;
}
.badge-accent { background: rgba(139, 92, 246, 0.15); color: var(--purple); border: 1px solid rgba(139, 92, 246, 0.3); }
.badge-success { background: rgba(16, 185, 129, 0.15); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-info { background: rgba(14, 165, 233, 0.15); color: var(--info); border: 1px solid rgba(14, 165, 233, 0.3); }

.stat-data {
  display: flex;
  flex-direction: column;
}
.stat-data.hidden {
  display: none;
}
.stat-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--text-white);
  font-weight: 500;
  line-height: 1.2;
}
.stat-unit {
  font-size: 0.9rem;
  color: var(--text-muted);
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}
.text-success {
    color: var(--success) !important;
}

/* FREE text — always bold, glowing, unmissable */
.stat-value.text-success {
    font-weight: 800 !important;
    font-size: 1.75rem !important;
    letter-spacing: -0.02em;
    text-shadow: 0 0 22px rgba(16, 185, 129, 0.45), 0 0 40px rgba(16, 185, 129, 0.2);
}
.glance-value.text-success {
    font-weight: 800 !important;
    font-size: 1.05rem !important;
    text-shadow: 0 0 14px rgba(16, 185, 129, 0.4);
    letter-spacing: -0.01em;
}
.status-free {
    font-weight: 700 !important;
    background: rgba(16, 185, 129, 0.18);
    color: #34D399;
    border: 1px solid rgba(16, 185, 129, 0.4);
    text-shadow: 0 0 8px rgba(16, 185, 129, 0.3);
}

/* Official Brand Icons (Simple Icons CDN img tags) */
.brand-icon-img {
  display: block;
  object-fit: contain;
  max-width: 100%;
  max-height: 100%;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.4));
}

/* Stat Card Flip */
.stat-card-flip { cursor: pointer; }
.stat-card-hidden { display: none; }
.stat-hint {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
  opacity: 0.8;
}
.stat-flip-hint {
  font-size: 0.7rem;
  color: var(--accent-blue-light);
  margin-top: 0.5rem;
  opacity: 0.7;
}
.stat-card-flip:hover .stat-flip-hint { opacity: 1; }

/* Model Icon Wrap */
.model-icon-wrap {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.model-icon-wrap.sm {
  width: 30px;
  height: 30px;
  border-radius: 7px;
}
.icon-anthropic  { background: rgba(210, 160, 255, 0.1); color: #D4A9FF; }
.icon-google     { background: rgba(66, 133, 244, 0.12); color: #4285F4; }
.icon-mistral    { background: rgba(255, 112, 0, 0.12); color: #FF7000; }
.icon-qwen       { background: rgba(107, 47, 191, 0.15); color: #9F5FE8; }
.icon-deepseek   { background: rgba(26, 26, 46, 0.9); color: #4DA6FF; border: 1px solid rgba(77, 166, 255, 0.2); }
.icon-openrouter { background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(59, 130, 246, 0.15)); color: #8B5CF6; }

/* Mode Toggle */
.mode-toggle {
  display: flex;
  gap: 0.25rem;
  background: var(--bg-navy-elevated);
  padding: 0.25rem;
  border-radius: 8px;
  border: 1px solid var(--border-glass);
  margin-bottom: 1.5rem;
  width: fit-content;
}
.mode-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.4rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  font-family: var(--font-main);
  transition: all 0.2s;
}
.mode-btn:hover { color: var(--text-silver); }
.mode-btn.active {
  background: var(--bg-navy-card);
  color: var(--text-white);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* Prompt Model Indicator */
.prompt-model-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Chart Caption */
.chart-caption {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 1rem;
}

/* Additional Badges */
.badge-purple { background: rgba(139, 92, 246, 0.15); color: var(--purple); border: 1px solid rgba(139, 92, 246, 0.3); }
.badge-danger  { background: rgba(239, 68, 68, 0.15); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.3); }

/* Model Tag Status */
.status-default { background: var(--bg-deep-navy); color: var(--text-muted); border: 1px solid var(--border-glass); }
.status-free    { background: rgba(16, 185, 129, 0.15); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.3); }
.status-risk    { background: rgba(239, 68, 68, 0.15); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.3); }

/* At a Glance */
.glance-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-main);
  transition: all 0.2s;
}
.glance-tab-btn:hover { color: var(--text-silver); }
.glance-tab-btn.active {
  background: var(--bg-navy-card);
  color: var(--text-white);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.glance-view.hidden { display: none; }
.glance-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.glance-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem 1rem;
  background: var(--bg-navy-card);
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  transition: transform 0.15s ease;
}
.glance-row:hover { transform: translateX(3px); }
.glance-row.rank-top { border-color: rgba(255,255,255,0.12); }
.rank-badge {
  font-size: 0.68rem;
  font-weight: 700;
  width: 34px;
  min-width: 34px;
  text-align: center;
  padding: 0.15rem 0.3rem;
  border-radius: 5px;
  letter-spacing: 0.02em;
}
.rank-1 { background: rgba(255, 215, 0, 0.15); color: #FFD700; border: 1px solid rgba(255, 215, 0, 0.3); }
.rank-2 { background: rgba(192, 192, 192, 0.12); color: #C0C0C0; border: 1px solid rgba(192,192,192,0.25); }
.rank-3 { background: rgba(205, 127, 50, 0.15); color: #CD7F32; border: 1px solid rgba(205,127,50,0.3); }
.rank-empty { width: 34px; min-width: 34px; }
.glance-model {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  min-width: 0;
}
.glance-name {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-silver);
  white-space: nowrap;
}
.glance-right {
  text-align: right;
  flex-shrink: 0;
}
.glance-value {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-white);
  display: block;
}
.glance-unit {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.glance-sublabel {
  font-size: 0.7rem;
  color: var(--text-muted);
  display: block;
}
.glance-divider {
  height: 1px;
  background: var(--border-glass);
  margin: 0.2rem 0;
}

/* Footer */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border-glass);
  color: var(--text-muted);
  font-size: 0.85rem;
}
.footer-content {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.footer-logo {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  object-fit: cover;
  opacity: 0.85;
}
.footer-link {
  color: var(--accent-electric-blue);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-link:hover { color: var(--accent-blue-light); }
.dot {
  opacity: 0.4;
}

/* ========================
   RESPONSIVE — TABLET
   ======================== */
@media (max-width: 760px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ========================
   RESPONSIVE — MOBILE
   ======================== */
@media (max-width: 540px) {
  .page-container { padding: 1rem 0.9rem 2rem; }

  /* Header */
  .header { flex-direction: column; align-items: flex-start; gap: 0.75rem; padding-bottom: 1rem; margin-bottom: 2rem; }
  .header h1 { font-size: 1.15rem; }
  .header-tag { font-size: 0.75rem; }
  .brand-logo { width: 38px; height: 38px; }

  /* Sections */
  .section { margin-bottom: 2.5rem; }
  .sec-title { font-size: 1.1rem; }
  .sec-sub { font-size: 0.82rem; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 0.75rem; }

  /* Mode toggle full-width */
  .mode-toggle { width: 100%; box-sizing: border-box; }
  .mode-btn { flex: 1; justify-content: center; }

  /* Model grid — 3 cols on mobile */
  .model-grid { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
  .model-card { padding: 0.65rem 0.4rem; gap: 0.5rem; border-radius: 10px; }
  .model-icon-wrap { width: 32px; height: 32px; border-radius: 8px; }
  .model-name { font-size: 0.75rem; }
  .model-tag { font-size: 0.58rem; padding: 0.08rem 0.22rem; }

  /* Prompt box */
  .prompt-header { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .btn-copy { width: 100%; justify-content: center; padding: 0.5rem 1rem; font-size: 0.82rem; }
  pre { font-size: 0.78rem; }

  /* Tab controls scrollable */
  .tab-controls, #glanceTabBar {
    width: 100%;
    box-sizing: border-box;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .tab-controls::-webkit-scrollbar, #glanceTabBar::-webkit-scrollbar { display: none; }
  .tab-btn, .glance-tab-btn { white-space: nowrap; padding: 0.4rem 0.65rem; font-size: 0.78rem; }

  /* Stats grid — 1 col on mobile */
  .stats-grid { grid-template-columns: 1fr; gap: 0.65rem; }
  .stat-card { padding: 1rem; }
  .stat-value { font-size: 1.3rem; }
  .stat-value.text-success { font-size: 1.5rem !important; }

  /* At a Glance */
  .glance-row { gap: 0.5rem; padding: 0.6rem 0.65rem; }
  .glance-name { font-size: 0.78rem; }
  .glance-value { font-size: 0.82rem; }
  .rank-badge { width: 28px; min-width: 28px; font-size: 0.6rem; padding: 0.1rem 0.2rem; }
  .rank-empty { width: 28px; min-width: 28px; }
  .model-icon-wrap.sm { width: 24px; height: 24px; }

  /* Footer */
  .footer-content { gap: 0.35rem; font-size: 0.78rem; flex-wrap: wrap; justify-content: center; }
  .footer-logo { width: 18px; height: 18px; }
}