/* The Observatory WebGPU UI - Complete Stylesheet */

/* ============================================================================
   FONT FACES (inlined to eliminate a request)
   ============================================================================ */

@font-face {
  font-family: 'Instrument Serif';
  src: url('/fonts/instrument-serif/InstrumentSerif-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Instrument Serif';
  src: url('/fonts/instrument-serif/InstrumentSerif-Italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Outfit';
  src: url('/fonts/outfit/Outfit-Latin.woff2') format('woff2');
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Graphik';
  src: url('/fonts/graphik/Graphik-Regular.woff') format('woff');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Graphik';
  src: url('/fonts/graphik/Graphik-Medium.woff') format('woff');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Graphik';
  src: url('/fonts/graphik/Graphik-Semibold-Web.woff2') format('woff2'),
       url('/fonts/graphik/Graphik-Semibold-Web.woff') format('woff');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Graphik';
  src: url('/fonts/graphik/Graphik-Semibold-Web.woff2') format('woff2'),
       url('/fonts/graphik/Graphik-Semibold-Web.woff') format('woff');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Graphik';
  src: url('/fonts/graphik/Graphik-Black.woff') format('woff');
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto Mono';
  src: url('/fonts/roboto-mono/roboto-mono-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto Mono';
  src: url('/fonts/roboto-mono/roboto-mono-500.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto Mono';
  src: url('/fonts/roboto-mono/roboto-mono-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ============================================================================
   MOBILE SCROLL FIXES
   ============================================================================ */

html, body {
  overscroll-behavior: none;
  background-color: #0d0a1a;
}

/* iOS safe area insets for notch/home indicator */
body {
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* ============================================================================
   ROOT VARIABLES & COLOR SYSTEM
   ============================================================================ */

:root {
  /* Background Colors */
  --bg-primary: #0d0a1a;
  --bg-secondary: #151025;
  --bg-elevated: #1e1735;

  /* Border Colors */
  --border: #2a2245;
  --border-hover: #3d3560;

  /* Text Colors */
  --text-primary: #f0eeff;
  --text-secondary: #a099c0;
  --text-muted: #5c5480;

  /* Accent Colors */
  --accent: #7c5cff;
  --accent-dim: rgba(124, 92, 255, 0.15);
  --accent-glow: rgba(124, 92, 255, 0.4);

  /* Status Colors */
  --success: #22c55e;
  --success-dim: rgba(34, 197, 94, 0.15);
  --warning: #f59e0b;
  --warning-dim: rgba(245, 158, 11, 0.15);
  --danger: #ef4444;
  --danger-dim: rgba(239, 68, 68, 0.15);
  --cyan: #22d3ee;
  --cyan-dim: rgba(34, 211, 238, 0.15);

  /* Effects */
  --matrix-green: #00ff41;

  /* Spacing Scale */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 56px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 18px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.3s ease;

  /* Shadows - Legacy */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);

  /* ==========================================================================
     DEPTH SYSTEM - 2006 Purist
     ========================================================================== */

  /* Shadows - Elevation levels */
  --depth-shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
  --depth-shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --depth-shadow-lg: 0 8px 32px rgba(0,0,0,0.4), 0 2px 8px rgba(0,0,0,0.3);
  --depth-shadow-xl: 0 12px 40px rgba(0,0,0,0.5);

  /* Shadows - Inset (recessed elements) */
  --depth-shadow-inset-sm: inset 0 2px 4px rgba(0,0,0,0.4);
  --depth-shadow-inset-md: inset 0 4px 8px rgba(0,0,0,0.5);
  --depth-shadow-inset-lg: inset 0 8px 20px rgba(0,0,0,0.6);

  /* Highlights - Top edge gleam */
  --depth-highlight-top: inset 0 1px 0 rgba(255,255,255,0.1);
  --depth-highlight-top-strong: inset 0 1px 0 rgba(255,255,255,0.3);

  /* Gradients - Card/Panel backgrounds */
  --gradient-card: linear-gradient(180deg, rgba(45,45,70,0.95) 0%, rgba(35,35,55,0.95) 100%);
  --gradient-header: linear-gradient(180deg, rgba(60,60,90,0.95) 0%, rgba(40,40,65,0.95) 100%);
  --gradient-status: linear-gradient(180deg, #1a1a2e 0%, #252540 100%);
  --gradient-recessed: linear-gradient(180deg, rgba(20,20,35,0.95) 0%, rgba(35,35,55,0.95) 100%);

  /* Glows & Effects */
  --glow-accent: 0 0 12px rgba(124,108,255,0.5);
  --glow-accent-strong: 0 0 20px rgba(124,108,255,0.8);
  --glow-success: 0 0 10px rgba(0,255,136,0.6);
  --glow-warning: 0 0 10px rgba(255,200,0,0.6);
  --glow-error: 0 0 10px rgba(255,100,100,0.6);

  /* Text shadows */
  --text-shadow-button: 0 -1px 0 rgba(0,0,0,0.3);
  --text-shadow-glow: 0 0 20px rgba(124,108,255,0.5);
  --text-shadow-status: 0 0 10px rgba(0,255,136,0.6);

  /* Borders - Depth system */
  --border-glass: 1px solid rgba(255,255,255,0.08);
  --border-subtle: 1px solid rgba(80,80,120,0.3);
  --border-button: 1px solid rgba(0,0,0,0.2);
  --border-selected: 3px solid #7c6cff;

  /* Button gradients - Aqua style */
  --gradient-button: linear-gradient(180deg, #8b7cff 0%, #6b5ce0 45%, #5a4bd0 55%, #6b5ce0 100%);
  --gradient-button-hover: linear-gradient(180deg, #9b8cff 0%, #7b6cf0 45%, #6a5be0 55%, #7b6cf0 100%);
  --gradient-button-active: linear-gradient(180deg, #5a4bd0 0%, #4a3bc0 45%, #3a2bb0 55%, #4a3bc0 100%);

  /* Checkbox gradients */
  --gradient-checkbox: linear-gradient(180deg, #1a1a2e 0%, #252540 100%);
  --gradient-checkbox-selected: linear-gradient(180deg, #7c6cff 0%, #5a4ad4 100%);

  /* Touch Targets */
  --touch-min: 44px;
  --touch-comfortable: 52px;
}

/* ============================================================================
   RESET & BASE STYLES
   ============================================================================ */

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

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

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

body {
  font-family: 'Outfit', 'Graphik', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  padding: 0;
  background: none;
}

input[type="file"] {
  font-family: inherit;
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', 'Graphik', sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

h1 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 2.25rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: var(--spacing-xs);
}

h2 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

h4 {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
}

p:last-child {
  margin-bottom: 0;
}

.mono {
  font-family: 'Roboto Mono', monospace;
}

/* ============================================================================
   LAYOUT
   ============================================================================ */

.container {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-lg);
}

/* Desktop breakpoint */
@media (max-width: 768px) {
  .container {
    padding: var(--spacing-xl) var(--spacing-md);
  }
}

/* Mobile breakpoint */
@media (max-width: 640px) {
  .container {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  h1 {
    font-size: 1.5rem;
  }
}

/* ============================================================================
   MATRIX RAIN BACKGROUND
   ============================================================================ */

.matrix-rain {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.matrix-column {
  position: absolute;
  top: 0;
  font-family: 'Roboto Mono', monospace;
  font-size: 16px;
  line-height: 1.1;
  white-space: nowrap;
  writing-mode: vertical-rl;
  text-orientation: upright;
  color: var(--matrix-green);
  text-shadow: 0 0 10px var(--matrix-green), 0 0 20px var(--matrix-green);
  opacity: 0;
  animation: matrix-fall linear infinite;
  will-change: transform;
}

.matrix-column span {
  display: block;
  opacity: 0.15;
  transition: opacity var(--transition-fast);
}

.matrix-column span:first-child {
  opacity: 1;
  color: #fff;
  text-shadow: 0 0 15px #fff, 0 0 30px var(--matrix-green);
}

.matrix-column span:nth-child(2) { opacity: 0.85; }
.matrix-column span:nth-child(3) { opacity: 0.7; }
.matrix-column span:nth-child(4) { opacity: 0.55; }
.matrix-column span:nth-child(5) { opacity: 0.4; }
.matrix-column span:nth-child(6) { opacity: 0.3; }
.matrix-column span:nth-child(7) { opacity: 0.2; }

@keyframes matrix-fall {
  0% {
    transform: translateY(-100%);
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    transform: translateY(100vh);
    opacity: 0;
  }
}

/* ============================================================================
   HEADER & BRANDING
   ============================================================================ */

header {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
  padding: var(--spacing-lg) var(--spacing-lg);
  background: var(--gradient-header);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  box-shadow:
    0 4px 16px rgba(0,0,0,0.4),
    inset 0 1px 0 rgba(255,255,255,0.1),
    inset 0 -1px 0 rgba(0,0,0,0.2);
  transition: all var(--transition-base);
}

header:hover {
  border-color: rgba(255,255,255,0.12);
  box-shadow:
    0 6px 20px rgba(0,0,0,0.45),
    inset 0 1px 0 rgba(255,255,255,0.12),
    inset 0 -1px 0 rgba(0,0,0,0.2);
}

/* Header title enhancement */
header h1 {
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.logo {
  width: 72px;
  height: 72px;
  min-width: 72px;
  border-radius: var(--radius-lg);
  object-fit: contain;
}

.brand {
  flex: 1;
}

.tagline {
  color: var(--text-secondary);
  font-family: 'Instrument Serif', Georgia, serif;
  font-style: italic;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
}

.header-branding {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-left: auto;
}

.header-branding img {
  height: 48px;
  object-fit: contain;
}

/* Backend Indicator - Instrument Panel Style */
.backend-info {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--gradient-status);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  box-shadow:
    inset 0 2px 6px rgba(0,0,0,0.5),
    0 1px 0 rgba(255,255,255,0.05);
  font-family: 'SF Mono', 'Monaco', 'Roboto Mono', monospace;
  font-size: 0.85rem;
  line-height: 1.4;
}

.backend-label {
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.75rem;
}

.backend-value {
  color: var(--cyan);
  font-weight: 700;
  transition: color var(--transition-base), text-shadow var(--transition-base);
}

.backend-value.webgpu {
  color: #00ff88;
  text-shadow: 0 0 10px rgba(0,255,136,0.6);
}

.backend-value.wasm {
  color: var(--warning);
  text-shadow: 0 0 10px rgba(255,200,0,0.4);
}

.backend-value.cpu {
  color: var(--danger);
  text-shadow: 0 0 10px rgba(239,68,68,0.4);
}

.backend-value.loading {
  color: var(--text-muted);
  animation: pulse 1.5s ease-in-out infinite;
}

.backend-info > span:last-child {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Clear Cache Button - Aqua Style */
.clear-cache-btn {
  margin-left: var(--spacing-md);
  padding: var(--spacing-xs) var(--spacing-sm);
  /* Mini Aqua gradient */
  background: linear-gradient(180deg, rgba(70,60,90,0.9) 0%, rgba(55,45,75,0.9) 45%, rgba(50,40,70,0.9) 55%, rgba(55,45,75,0.9) 100%);
  border: 1px solid rgba(0,0,0,0.2);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow:
    0 1px 2px rgba(0,0,0,0.3),
    inset 0 1px 0 rgba(255,255,255,0.1);
  text-shadow: 0 -1px 0 rgba(0,0,0,0.2);
}

.clear-cache-btn:hover {
  /* Danger Aqua gradient on hover */
  background: linear-gradient(180deg, #ff6b6b 0%, #ee5555 45%, #dd4444 55%, #ee5555 100%);
  border-color: rgba(0,0,0,0.2);
  color: white;
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 0 10px rgba(239, 68, 68, 0.4),
    inset 0 1px 0 rgba(255,255,255,0.3);
}

.clear-cache-btn:active {
  background: linear-gradient(180deg, #dd4444 0%, #cc3333 45%, #bb2222 55%, #cc3333 100%);
  box-shadow:
    inset 0 2px 4px rgba(0,0,0,0.4);
}

.clear-cache-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media (max-width: 640px) {
  header {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }

  .header-branding {
    margin-left: 0;
    justify-content: center;
  }

  .backend-info {
    flex-direction: column;
  }

  .backend-info > span:last-child {
    margin-left: 0;
  }

  .clear-cache-btn {
    margin-left: 0;
    margin-top: var(--spacing-sm);
  }
}

/* ============================================================================
   MODEL STATUS & SELECTOR GRID
   ============================================================================ */

.model-status {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(21, 16, 37, 0.4);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.model-status:hover {
  border-color: var(--border-hover);
}

.model-status-title {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
  font-weight: 700;
}

.model-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.model-item {
  font-family: 'Graphik', sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(30, 23, 53, 0.6);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.model-item.loading {
  color: var(--cyan);
  background: var(--cyan-dim);
  border-color: var(--cyan);
  animation: pulse 1.5s ease-in-out infinite;
}

.model-item.ready {
  color: var(--success);
  background: var(--success-dim);
  border-color: var(--success);
}

.model-item.error {
  color: var(--danger);
  background: var(--danger-dim);
  border-color: var(--danger);
}

.model-item.pending {
  color: var(--text-secondary);
  background: rgba(30, 23, 53, 0.4);
  border-color: var(--border);
}

/* Model Selector - Full Width */
.model-selector {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

/* ============================================================================
   MODEL INFO CARD - Single model showcase
   ============================================================================ */

.model-info-card {
  padding: var(--spacing-lg);
  background: var(--gradient-card);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  box-shadow:
    0 8px 32px rgba(0,0,0,0.4),
    0 2px 8px rgba(0,0,0,0.3),
    inset 0 1px 0 rgba(255,255,255,0.1);
  margin-bottom: var(--spacing-lg);
}

.model-info-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.model-info-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.model-badge-icon {
  width: 16px;
  height: 16px;
  stroke: var(--cyan);
}

.model-info-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.model-info-status .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warning);
  animation: pulse 1.5s ease-in-out infinite;
}

.model-info-status.ready .status-dot {
  background: var(--success);
  animation: none;
}

.model-info-status.error .status-dot {
  background: var(--danger);
  animation: none;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.model-info-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-xl);
  align-items: start;
}

.model-info-main {
  flex: 1;
}

.model-info-title {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs) 0;
}

.model-info-subtitle {
  font-size: 0.85rem;
  font-family: 'Roboto Mono', monospace;
  color: var(--accent);
  margin: 0 0 var(--spacing-sm) 0;
}

.model-info-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
  max-width: 500px;
}

.model-info-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(13, 10, 26, 0.4);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.04);
}

.feature-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.feature-icon svg {
  width: 18px;
  height: 18px;
}

.feature-icon.webgpu {
  background: var(--cyan-dim);
}

.feature-icon.webgpu svg {
  stroke: var(--cyan);
}

.feature-icon.webgpu.active {
  background: linear-gradient(135deg, var(--cyan-dim), rgba(34, 211, 238, 0.3));
  box-shadow: 0 0 12px var(--cyan-dim);
}

.feature-icon.privacy {
  background: var(--success-dim);
}

.feature-icon.privacy svg {
  stroke: var(--success);
}

.feature-icon.model {
  background: var(--accent-dim);
}

.feature-icon.model svg {
  stroke: var(--accent);
}

.feature-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.feature-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.feature-value {
  font-size: 0.85rem;
  color: var(--text-primary);
  font-family: 'Roboto Mono', monospace;
}

/* Responsive: Stack on mobile */
@media (max-width: 640px) {
  .model-info-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .model-info-features {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .feature-item {
    flex: 1;
    min-width: 140px;
  }

  .model-info-description {
    max-width: none;
  }
}

.model-category {
  padding: var(--spacing-lg);
  background: var(--gradient-card);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  box-shadow:
    0 8px 32px rgba(0,0,0,0.4),
    0 2px 8px rgba(0,0,0,0.3),
    inset 0 1px 0 rgba(255,255,255,0.1);
  transition: all var(--transition-base);
}

.model-category:hover {
  border-color: rgba(255,255,255,0.12);
  background: linear-gradient(180deg, rgba(50,50,75,0.95) 0%, rgba(40,40,60,0.95) 100%);
  box-shadow:
    0 10px 36px rgba(0,0,0,0.45),
    0 3px 10px rgba(0,0,0,0.35),
    inset 0 1px 0 rgba(255,255,255,0.12);
}

.model-category.selected {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(60,50,90,0.95) 0%, rgba(45,40,70,0.95) 100%);
  box-shadow:
    0 8px 32px rgba(0,0,0,0.4),
    0 0 32px var(--accent-glow),
    inset 0 1px 0 rgba(255,255,255,0.15);
}

.model-category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.model-category-title {
  font-weight: 700;
  font-size: 1.15rem;
}

.model-category-count {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(13, 10, 26, 0.6);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: all var(--transition-base);
}

.model-category.selected .model-category-count {
  background: var(--accent);
  color: white;
}

.model-category-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.model-list-in-category {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.model-list-in-category .model-item {
  font-size: 0.8rem;
  padding: var(--spacing-xs) var(--spacing-md);
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.model-label {
  flex: 1;
  min-width: 0;
}

.model-training-badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  background: rgba(124, 92, 255, 0.15);
  border: 1px solid rgba(124, 92, 255, 0.3);
  border-radius: 4px;
  color: var(--accent);
  font-family: 'Roboto Mono', monospace;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.model-item:hover .model-training-badge {
  background: rgba(124, 92, 255, 0.25);
  border-color: rgba(124, 92, 255, 0.5);
}

@media (max-width: 640px) {
  .model-selector {
    grid-template-columns: 1fr;
  }
}

/* ============================================================================
   UPLOAD ZONE - 2006 Purist "Mail Slot" Design
   ============================================================================ */

.upload-zone {
  position: relative;
  /* Solid border instead of dashed - physical slot appearance */
  border: 2px solid rgba(80,80,120,0.3);
  border-radius: 20px;
  padding: 64px var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-base);
  margin-bottom: var(--spacing-lg);
  /* Recessed slot gradient */
  background: var(--gradient-recessed);
  backdrop-filter: blur(8px);
  cursor: pointer;
  /* Recessed "slot" effect with inset shadows */
  box-shadow:
    inset 0 8px 20px rgba(0,0,0,0.6),
    inset 0 -2px 6px rgba(255,255,255,0.03),
    0 4px 12px rgba(0,0,0,0.4);
}

.upload-zone:hover {
  border-color: rgba(124,108,255,0.5);
  background: linear-gradient(180deg, rgba(25,25,45,0.95) 0%, rgba(40,40,65,0.95) 100%);
  box-shadow:
    inset 0 8px 20px rgba(0,0,0,0.4),
    inset 0 -2px 6px rgba(255,255,255,0.05),
    0 0 20px rgba(124,108,255,0.3),
    0 4px 12px rgba(0,0,0,0.4);
}

.upload-zone.dragover {
  border-color: rgba(124,108,255,0.7);
  background: linear-gradient(180deg, rgba(30,25,55,0.95) 0%, rgba(45,40,75,0.95) 100%);
  box-shadow:
    inset 0 6px 16px rgba(0,0,0,0.3),
    inset 0 -2px 8px rgba(255,255,255,0.08),
    0 0 30px rgba(124,108,255,0.5),
    0 0 60px rgba(124,108,255,0.2),
    0 4px 12px rgba(0,0,0,0.4);
}

.upload-zone.has-image {
  padding: var(--spacing-lg);
  border-style: solid;
  border-color: var(--success);
  box-shadow:
    inset 0 4px 12px rgba(0,0,0,0.3),
    0 0 20px rgba(34, 197, 94, 0.2),
    0 4px 12px rgba(0,0,0,0.4);
}

.upload-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-lg);
  opacity: 0.85;
  transition: all var(--transition-base);
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
}

.upload-zone:hover .upload-icon {
  opacity: 1;
  transform: translateY(-4px);
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.6)) drop-shadow(0 0 8px rgba(124,108,255,0.3));
}

.upload-text {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.2rem;
  line-height: 1.4;
}

.upload-text strong {
  color: var(--text-primary);
  font-weight: 700;
}

.upload-hint {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-family: 'Graphik', sans-serif;
  font-weight: 400;
}

.upload-input {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  overflow: hidden;
}

.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: all var(--transition-base);
}

.upload-zone.has-image .upload-placeholder {
  display: none;
}

/* ============================================================================
   PREVIEW
   ============================================================================ */

.preview-container {
  display: none;
}

.upload-zone.has-image .preview-container {
  display: block;
}

.preview-image {
  max-width: 100%;
  max-height: 320px;
  width: auto;
  height: auto;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
}

.preview-image:hover {
  transform: scale(1.02);
}

.preview-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.95rem;
  color: var(--text-secondary);
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.preview-name {
  font-family: 'Graphik', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  word-break: break-all;
  flex: 1;
  min-width: 0;
}

.preview-remove {
  color: var(--danger);
  cursor: pointer;
  background: none;
  border: none;
  font-size: 0.95rem;
  font-family: inherit;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  transition: background var(--transition-base);
  white-space: nowrap;
  flex-shrink: 0;
}

.preview-remove:hover {
  background: var(--danger-dim);
}

@media (max-width: 640px) {
  .upload-zone {
    padding: 48px var(--spacing-md);
  }

  .upload-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
  }

  .preview-info {
    flex-direction: column;
    align-items: flex-start;
  }

  .preview-remove {
    width: 100%;
  }
}

/* ============================================================================
   ANALYZE BUTTON & NEW ANALYSIS BUTTON - 2006 Aqua Style
   ============================================================================ */

.analyze-btn {
  width: 100%;
  padding: 22px 28px;
  /* Disabled state - subdued gradient */
  background: linear-gradient(180deg, rgba(50,45,70,0.8) 0%, rgba(40,35,60,0.8) 45%, rgba(35,30,55,0.8) 55%, rgba(40,35,60,0.8) 100%);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(0,0,0,0.3);
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: not-allowed;
  transition: all var(--transition-base);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  user-select: none;
  /* Aqua-style shadows */
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    inset 0 1px 0 rgba(255,255,255,0.1);
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.new-analysis-btn {
  width: 100%;
  padding: 18px 28px;
  /* Aqua gradient */
  background: var(--gradient-button);
  border: 1px solid rgba(0,0,0,0.2);
  border-radius: var(--radius-lg);
  font-family: inherit;
  font-size: 1.1rem;
  font-weight: 600;
  color: white;
  cursor: pointer;
  transition: all var(--transition-base);
  margin: var(--spacing-lg) 0 var(--spacing-2xl) 0;
  display: block;
  user-select: none;
  /* Aqua-style box shadow with glow */
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 0 20px rgba(124,108,255,0.4),
    inset 0 1px 0 rgba(255,255,255,0.3);
  text-shadow: var(--text-shadow-button);
}

.new-analysis-btn:hover {
  background: var(--gradient-button-hover);
  transform: translateY(-2px);
  box-shadow:
    0 4px 8px rgba(0,0,0,0.35),
    0 0 30px rgba(124,108,255,0.5),
    0 0 12px rgba(124,108,255,0.5),
    inset 0 1px 0 rgba(255,255,255,0.35);
}

.new-analysis-btn:active {
  transform: translateY(0);
  background: var(--gradient-button-active);
  box-shadow:
    inset 0 2px 4px rgba(0,0,0,0.4),
    0 0 15px rgba(124,108,255,0.3);
}

.analyze-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.analyze-btn.ready {
  /* Full Aqua gradient when ready */
  background: var(--gradient-button);
  border: 1px solid rgba(0,0,0,0.2);
  color: white;
  cursor: pointer;
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 0 20px rgba(124,108,255,0.4),
    inset 0 1px 0 rgba(255,255,255,0.3);
  text-shadow: var(--text-shadow-button);
}

.analyze-btn.ready:hover:not(:disabled) {
  background: var(--gradient-button-hover);
  transform: translateY(-2px);
  box-shadow:
    0 4px 8px rgba(0,0,0,0.35),
    0 0 30px rgba(124,108,255,0.5),
    0 0 12px rgba(124,108,255,0.5),
    inset 0 1px 0 rgba(255,255,255,0.35);
}

.analyze-btn.ready:active:not(:disabled) {
  transform: translateY(0);
  background: var(--gradient-button-active);
  box-shadow:
    inset 0 2px 4px rgba(0,0,0,0.4),
    0 0 15px rgba(124,108,255,0.3);
}

.analyze-btn.scanning {
  background: linear-gradient(180deg, rgba(50,70,80,0.8) 0%, rgba(40,60,70,0.8) 45%, rgba(35,55,65,0.8) 55%, rgba(40,60,70,0.8) 100%);
  border-color: var(--cyan);
  color: var(--cyan);
  cursor: wait;
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 0 15px rgba(34, 211, 238, 0.3),
    inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn-text {
  display: inline-block;
}

.btn-icon {
  width: 20px;
  height: 20px;
  display: inline-block;
}

@media (max-width: 640px) {
  .analyze-btn {
    padding: 18px var(--spacing-md);
    font-size: 1rem;
  }
}

/* ============================================================================
   LOADING OVERLAY - 2006 Purist "Powering Up" Effect
   ============================================================================ */

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13, 10, 26, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(4px);
  transition: opacity var(--transition-slow);
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

/* Progress Ring / Spinner with glow effect */
.loading-spinner {
  width: 80px;
  height: 80px;
  border: 4px solid rgba(60,60,90,0.5);
  border-top-color: #7c6cff;
  border-radius: 50%;
  margin-bottom: var(--spacing-lg);
  /* Use box-shadow only for glow (better performance than filter + box-shadow) */
  box-shadow:
    0 0 20px rgba(124,108,255,0.3),
    0 0 10px rgba(124,108,255,0.5),
    inset 0 0 15px rgba(124,108,255,0.1);
  /* Combined animations */
  animation: spin 1s linear infinite, progress-glow 2s ease-in-out infinite;
}

/* Progress ring pulse glow animation (box-shadow only for performance) */
@keyframes progress-glow {
  0%, 100% {
    box-shadow:
      0 0 20px rgba(124,108,255,0.3),
      0 0 10px rgba(124,108,255,0.5),
      inset 0 0 15px rgba(124,108,255,0.1);
  }
  50% {
    box-shadow:
      0 0 35px rgba(124,108,255,0.5),
      0 0 20px rgba(124,108,255,0.8),
      inset 0 0 20px rgba(124,108,255,0.15);
  }
}

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

/* Init/Loading Title with glow effect */
.loading-text,
.init-title {
  font-size: 1.5rem;
  color: #c0c0ff;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  /* Glowing title text */
  text-shadow: var(--text-shadow-glow);
  animation: title-glow 3s ease-in-out infinite;
}

@keyframes title-glow {
  0%, 100% {
    text-shadow: 0 0 15px rgba(124,108,255,0.4);
  }
  50% {
    text-shadow: 0 0 25px rgba(124,108,255,0.7), 0 0 40px rgba(124,108,255,0.3);
  }
}

/* Subtitle as secondary text */
.loading-subtext,
.init-subtitle {
  font-size: 0.9rem;
  color: rgba(200,200,220,0.7);
  font-family: 'Graphik', sans-serif;
  font-weight: 400;
  text-align: center;
  max-width: 300px;
}

.loading-progress {
  margin-top: var(--spacing-lg);
  width: 240px;
  height: 4px;
  background: rgba(30, 23, 53, 0.6);
  border-radius: 2px;
  overflow: hidden;
  /* Subtle glow around progress track */
  box-shadow: 0 0 8px rgba(0,0,0,0.3);
}

.loading-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #6b5ce0, #8b7cff);
  border-radius: 2px;
  animation: progressAnim 2s ease-in-out infinite;
  /* Glow on progress bar */
  box-shadow: 0 0 8px rgba(124,108,255,0.6);
}

@keyframes progressAnim {
  0% {
    width: 0%;
    margin-left: 0;
  }
  50% {
    width: 60%;
    margin-left: 20%;
  }
  100% {
    width: 0%;
    margin-left: 100%;
  }
}

/* ============================================================================
   RESULTS PANEL
   ============================================================================ */

.results-panel {
  background: var(--gradient-card);
  backdrop-filter: blur(8px);
  border: 2px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow:
    0 8px 32px rgba(0,0,0,0.4),
    0 2px 8px rgba(0,0,0,0.3),
    inset 0 1px 0 rgba(255,255,255,0.1);
  transition: all var(--transition-slow);
  display: none;
}

.results-panel.active {
  display: block;
  animation: slideUp 0.4s ease-out;
}

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

.results-panel.success {
  border-color: var(--success);
  box-shadow: 0 0 40px var(--success-dim);
}

.results-panel.warning {
  border-color: var(--warning);
  box-shadow: 0 0 40px var(--warning-dim);
}

.results-panel.danger {
  border-color: var(--danger);
  box-shadow: 0 0 40px var(--danger-dim);
}

.results-panel.mixed {
  border-color: var(--cyan);
  box-shadow: 0 0 40px var(--cyan-dim);
}

.results-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border);
}

.results-icon {
  width: 80px;
  height: 80px;
  min-width: 80px;
  border-radius: var(--radius-lg);
  object-fit: contain;
}

.results-title-group {
  flex: 1;
}

.results-title {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 1.6rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: var(--spacing-xs);
}

.results-subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
}

.results-confidence {
  text-align: right;
  min-width: 120px;
}

.confidence-value {
  font-family: 'Roboto Mono', monospace;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.confidence-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--spacing-xs);
}

.results-body {
  padding: var(--spacing-lg);
}

/* ============================================================================
   SCANNING STATE
   ============================================================================ */

.scanning-state {
  text-align: center;
  padding: 48px var(--spacing-lg);
}

.scanning-icon {
  width: 112px;
  height: 112px;
  display: block;
  margin: 0 auto var(--spacing-lg);
  object-fit: contain;
  animation: pulse 1.5s ease-in-out infinite;
}

.scanning-text {
  font-size: 1.3rem;
  color: var(--cyan);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.scanning-subtext {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-family: 'Graphik', sans-serif;
  font-weight: 400;
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
  min-height: 1.5em;
}

/* Per-model progress list */
.model-progress-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: var(--spacing-lg) auto 0;
  max-width: 400px;
  width: 100%;
}

.model-progress-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-family: 'Graphik', sans-serif;
  font-weight: 500;
}

.model-progress-name {
  flex: 0 0 140px;
  text-align: right;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.8rem;
}

.model-progress-bar {
  flex: 1;
  height: 6px;
  background: rgba(30, 23, 53, 0.6);
  border-radius: 3px;
  overflow: hidden;
  min-width: 100px;
}

.model-progress-fill {
  height: 100%;
  background: var(--cyan);
  border-radius: 3px;
  transition: width 0.15s ease-out;
}

.model-progress-fill.cached {
  background: var(--success);
}

.model-progress-fill.running {
  background: var(--cyan);
  animation: pulse 1s ease-in-out infinite;
}

.model-progress-fill.complete {
  background: var(--success);
}

.model-progress-fill.error {
  background: var(--danger);
}

.model-progress-status {
  flex: 0 0 50px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.model-progress-status.cached {
  color: var(--success);
}

.model-progress-status.complete {
  color: var(--success);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.progress-bar {
  width: 240px;
  height: 5px;
  background: rgba(30, 23, 53, 0.6);
  border-radius: 3px;
  margin: var(--spacing-lg) auto 0;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--cyan);
  border-radius: 3px;
  transition: width 0.3s ease;
}

@media (max-width: 640px) {
  .scanning-state {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .scanning-icon {
    width: 80px;
    height: 80px;
  }

  .progress-bar {
    width: 100%;
    max-width: 200px;
  }
}

/* ============================================================================
   RESULTS CONTENT
   ============================================================================ */

.results-content.hidden {
  display: none;
}

.model-breakdown {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border);
}

.model-breakdown-title {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
  font-weight: 700;
}

.model-votes {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.model-vote {
  font-family: 'Graphik', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  background: rgba(30, 23, 53, 0.6);
  color: var(--text-muted);
  border: 1px solid transparent;
  transition: all var(--transition-base);
  cursor: default;
  user-select: none;
}

.model-vote:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.model-vote.ai {
  background: var(--danger-dim);
  color: var(--danger);
  border-color: var(--danger);
}

.model-vote.human {
  background: var(--success-dim);
  color: var(--success);
  border-color: var(--success);
}

.model-vote.unsure {
  background: var(--warning-dim);
  color: var(--warning);
  border-color: var(--warning);
}

.model-vote.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  border-color: var(--danger);
  opacity: 0.6;
}

/* =============================================================================
   RESULTS SECTIONS - SCIENTIFIC TRANSPARENCY DESIGN
   ============================================================================= */

/* Section Headers */
.section-header {
  margin-bottom: var(--spacing-lg);
}

.section-header h4 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs) 0;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* Ensemble Section */
.ensemble-section {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.ensemble-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.ensemble-header h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0;
}

.ensemble-formula {
  font-family: 'Outfit', 'Graphik', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}

.perf-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.perf-stat {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.perf-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.perf-value {
  font-family: 'Roboto Mono', monospace;
  font-size: 1.1rem;
  color: var(--text-primary);
  font-weight: 600;
}

/* Models Section */
.models-section {
  margin-bottom: var(--spacing-2xl);
}

.model-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

/* Model Card */
.model-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.model-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--depth-shadow-md);
}

.model-card-header {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border);
}

.model-card-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.model-name {
  font-family: 'Graphik', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.model-weight {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.model-verdict {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.model-verdict.ai {
  background: var(--danger-dim);
  color: var(--danger);
}

.model-verdict.human {
  background: var(--success-dim);
  color: var(--success);
}

.model-verdict.unsure {
  background: var(--warning-dim);
  color: var(--warning);
}

/* Probability Bars */
.probability-bars {
  margin-bottom: var(--spacing-lg);
}

.probability-bar-item {
  margin-bottom: var(--spacing-md);
}

.probability-bar-item:last-child {
  margin-bottom: 0;
}

.prob-bar-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xs);
  font-size: 0.8rem;
}

.prob-bar-label span:first-child {
  color: var(--text-secondary);
  font-weight: 500;
}

.prob-value {
  font-family: 'Roboto Mono', monospace;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.9rem;
}

.prob-bar-track {
  height: 8px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.prob-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.prob-bar-fill.ai {
  background: linear-gradient(90deg, var(--danger-dim), var(--danger));
}

.prob-bar-fill.human {
  background: linear-gradient(90deg, var(--success-dim), var(--success));
}

/* Model Specs */
.model-specs {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-sm);
}

.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xs) 0;
}

.spec-row:not(:last-child) {
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.spec-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.spec-value {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-primary);
  font-weight: 600;
}

/* Model Training Info */
.model-training {
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border);
}

.training-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.training-data {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ============================================================================
   BOTTOM DRAWER - Methodology, Interpretation & Forensics
   ============================================================================ */

.bottom-drawer {
  margin-top: var(--spacing-lg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-secondary);
  transition: border-color var(--transition-base);
}

.bottom-drawer:hover {
  border-color: var(--border-hover);
}

.bottom-drawer-tab {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(180deg, rgba(30, 23, 53, 0.95) 0%, rgba(21, 16, 37, 0.95) 100%);
  border: none;
  border-bottom: 1px solid transparent;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition-base), border-color var(--transition-base);
}

.bottom-drawer-tab:hover {
  background: linear-gradient(180deg, rgba(40, 30, 65, 0.95) 0%, rgba(28, 22, 48, 0.95) 100%);
}

.bottom-drawer-tab.active {
  border-bottom-color: var(--border);
}

.bottom-drawer-chevron {
  color: var(--accent);
  opacity: 0.7;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity var(--transition-base);
  flex-shrink: 0;
  transform: rotate(-90deg);
}

.bottom-drawer-tab:hover .bottom-drawer-chevron {
  opacity: 1;
}

.bottom-drawer-tab.active .bottom-drawer-chevron {
  transform: rotate(0deg);
  opacity: 1;
}

.bottom-drawer-label {
  font-family: 'Outfit', 'Graphik', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color var(--transition-base);
}

.bottom-drawer-tab:hover .bottom-drawer-label,
.bottom-drawer-tab.active .bottom-drawer-label {
  color: var(--text-primary);
}

.bottom-drawer-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.bottom-drawer-body.open {
  max-height: 5000px;
  overflow: visible;
}

.bottom-drawer-body > .methodology-section {
  border: none;
  border-radius: 0;
  border-bottom: 1px solid var(--border);
}

.bottom-drawer-body > .forensics-container {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
}

/* Methodology Section */
.methodology-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
}

.methodology-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.methodology-column h5 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-md) 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.methodology-column h5:not(:first-child) {
  margin-top: var(--spacing-lg);
}

/* Formula Display */
.formula-display {
  background: rgba(124, 92, 255, 0.08);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius-sm);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.formula-line {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

.formula-explainer {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  font-family: 'Roboto Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Methodology Lists */
.methodology-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.methodology-list li {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-md);
  position: relative;
}

.methodology-list li:before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.methodology-list li strong {
  color: var(--text-primary);
  font-family: 'Outfit', 'Graphik', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .ensemble-section {
    padding: var(--spacing-lg);
  }

  .model-cards {
    grid-template-columns: 1fr;
  }

  .methodology-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .perf-stats {
    grid-template-columns: 1fr;
  }
}

/* ============================================================================
   ANALYSIS PROGRESS BAR (Issue #7)
   ============================================================================ */

.analysis-progress {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md);
  background: rgba(20, 15, 35, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.progress-text {
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  text-align: center;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.analysis-progress .progress-bar-wrapper {
  background: rgba(30, 23, 53, 0.6);
  border-radius: 4px;
  height: 8px;
  overflow: hidden;
}

.analysis-progress .progress-bar {
  background: linear-gradient(90deg, var(--accent), var(--accent-glow));
  height: 100%;
  transition: width 0.3s ease;
  border-radius: 4px;
}

/* ============================================================================
   UPLOAD ZONE PASTE HINT (Issue #4)
   ============================================================================ */

.upload-zone {
  position: relative;
}

.upload-zone::after {
  content: attr(data-hint);
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  color: var(--text-secondary);
  opacity: 0.7;
  pointer-events: none;
}

.upload-zone.has-image::after {
  display: none;
}

/* ============================================================================
   PERFORMANCE STATISTICS
   ============================================================================ */

.perf-stats {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background: rgba(30, 23, 53, 0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  font-family: 'Graphik', sans-serif;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.perf-stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  gap: var(--spacing-md);
}

.perf-stat:not(:last-child) {
  border-bottom: 1px solid var(--border);
}

.perf-stat-label {
  color: var(--text-muted);
}

.perf-stat-value {
  color: var(--cyan);
  font-weight: 700;
}

@media (max-width: 640px) {
  .perf-stats {
    font-size: 0.75rem;
  }
}

/* ============================================================================
   ANIMATIONS & EFFECTS
   ============================================================================ */

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px var(--accent-glow);
  }
  50% {
    box-shadow: 0 0 40px var(--accent-glow);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* ============================================================================
   UTILITY CLASSES
   ============================================================================ */

.hidden {
  display: none !important;
}

.invisible {
  visibility: hidden;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.no-scroll {
  overflow: hidden;
}

/* ============================================================================
   INTERACTIVE ELEMENT STATES & MICRO-INTERACTIONS - 2006 Purist Polish
   ============================================================================ */

/* Focus states with glow effect (Phase 4.3) */
button:focus-visible,
input:focus-visible,
.model-item:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 2px var(--bg-primary),
    0 0 0 4px rgba(124,108,255,0.7),
    0 0 15px rgba(124,108,255,0.4);
}

/* Focus state for upload zone */
.upload-zone:focus-visible,
.upload-zone:focus-within {
  outline: none;
  border-color: rgba(124,108,255,0.7);
  box-shadow:
    inset 0 8px 20px rgba(0,0,0,0.4),
    0 0 0 2px var(--bg-primary),
    0 0 0 4px rgba(124,108,255,0.5),
    0 0 20px rgba(124,108,255,0.3);
}

/* Smooth hover transitions for all interactive elements */
button,
.model-item,
.model-category,
.upload-zone,
.toast-btn,
.preview-image,
.model-vote {
  transition: all var(--transition-base);
}

/* Subtle hover lift on cards (Phase 4.3) */
.model-category:hover {
  transform: translateY(-2px);
}

.results-panel:hover {
  transform: translateY(-1px);
}

/* Hover lift for model votes */
.model-vote:hover {
  transform: translateY(-3px);
  box-shadow:
    0 4px 12px rgba(0,0,0,0.3),
    0 0 8px rgba(124,108,255,0.2);
}

/* Preview image hover lift */
.preview-image:hover {
  transform: scale(1.02) translateY(-2px);
  box-shadow:
    0 8px 24px rgba(0,0,0,0.4),
    0 0 15px rgba(124,108,255,0.2);
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Dark mode support (default is already dark) */
@media (prefers-color-scheme: light) {
  :root {
    --bg-primary: #f8f6fc;
    --bg-secondary: #f0ebf9;
    --bg-elevated: #e8e2f5;
    --border: #d9cef2;
    --border-hover: #c9b5e3;
    --text-primary: #1a1420;
    --text-secondary: #4a3f6b;
    --text-muted: #8b7fa0;
  }
}

/* ============================================================================
   AI PROBABILITY METER
   ============================================================================ */

.ai-probability-meter {
  margin: 0;
}

.probability-labels {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
  font-family: 'Graphik', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.prob-label.prob-human {
  color: var(--success);
}

.prob-label.prob-ai {
  color: var(--danger);
}

.probability-bar {
  position: relative;
  height: 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  overflow: visible;
}

.probability-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  background: linear-gradient(90deg,
    var(--success) 0%,
    var(--cyan) 50%,
    var(--danger) 100%
  );
  border-radius: 6px;
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.probability-marker {
  position: absolute;
  top: -12px;
  transform: translateX(-50%);
  transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 10;
}

.probability-value {
  display: inline-block;
  padding: 6px 14px;
  background: var(--bg-primary);
  border: 2px solid var(--accent);
  border-radius: var(--radius-sm);
  font-family: 'Roboto Mono', monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.4),
    0 0 16px var(--accent-glow);
}

.probability-hint {
  margin-top: var(--spacing-sm);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  font-style: italic;
}

@media (max-width: 480px) {
  .probability-bar {
    height: 16px;
  }

  .probability-value {
    font-size: 0.95rem;
    padding: 8px 16px;
  }

  .probability-marker {
    top: -14px;
  }
}

/* ============================================================================
   RESPONSIVE ADJUSTMENTS
   ============================================================================ */

@media (max-width: 768px) {
  .results-header {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }

  .results-confidence {
    text-align: center;
  }

  .model-votes {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1.1rem;
  }

  .bottom-drawer-tab {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .bottom-drawer-label {
    font-size: 0.75rem;
  }

  .results-icon {
    width: 60px;
    height: 60px;
  }

  .results-title {
    font-size: 1.25rem;
  }

  .confidence-value {
    font-size: 1.5rem;
  }

  .model-vote {
    font-size: 0.75rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

/* Print styles */
@media print {
  .matrix-rain,
  .loading-overlay,
  .analyze-btn {
    display: none;
  }

  .container {
    max-width: 100%;
  }
}

/* ============================================================================
   MODEL CATEGORY SELECTORS
   ============================================================================ */

.model-selector {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.model-category-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  gap: var(--spacing-md);
}

.model-category-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.model-category-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.model-category-count {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.9rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(13, 10, 26, 0.6);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  white-space: nowrap;
}

.model-category-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

/* Category Buttons (Select All, Clear) - Aqua Style */
.category-btn {
  flex: 1;
  padding: var(--spacing-xs) var(--spacing-md);
  /* Aqua gradient */
  background: linear-gradient(180deg, rgba(70,65,95,0.9) 0%, rgba(55,50,80,0.9) 45%, rgba(50,45,75,0.9) 55%, rgba(55,50,80,0.9) 100%);
  border: 1px solid rgba(0,0,0,0.2);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow:
    0 1px 3px rgba(0,0,0,0.3),
    inset 0 1px 0 rgba(255,255,255,0.1);
  text-shadow: 0 -1px 0 rgba(0,0,0,0.2);
}

.category-btn:hover {
  background: var(--gradient-button-hover);
  border-color: rgba(0,0,0,0.2);
  color: white;
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    0 0 10px rgba(124,108,255,0.4),
    inset 0 1px 0 rgba(255,255,255,0.3);
}

.category-btn:active {
  background: var(--gradient-button-active);
  box-shadow:
    inset 0 2px 4px rgba(0,0,0,0.4);
}

.model-list-in-category {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-height: 280px;
  overflow-y: auto;
}

/* Model Items with Checkbox - 2006 Purist Style */
.model-list-in-category .model-item {
  cursor: pointer;
  /* Add padding-left for checkbox space */
  padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 40px;
  /* Raised item gradient */
  background: linear-gradient(180deg, #2a2a45 0%, #1f1f35 100%);
  border: 1px solid rgba(80,80,120,0.2);
  border-radius: 8px;
  transition: all var(--transition-base);
  position: relative;
  /* Raised appearance */
  box-shadow:
    0 2px 4px rgba(0,0,0,0.3),
    inset 0 1px 0 rgba(255,255,255,0.05);
}

/* Checkbox pseudo-element (::before) */
.model-list-in-category .model-item::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  border-radius: 3px;
  /* Recessed checkbox background */
  background: var(--gradient-checkbox);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.4);
  border: 1px solid rgba(80,80,120,0.3);
  transition: all var(--transition-base);
}

/* Checkmark pseudo-element (::after) - hidden by default */
.model-list-in-category .model-item::after {
  content: '';
  position: absolute;
  left: 16px;
  top: 50%;
  width: 6px;
  height: 10px;
  border: solid transparent;
  border-width: 0 2px 2px 0;
  transform: translateY(-60%) rotate(45deg);
  transition: all var(--transition-base);
  opacity: 0;
}

.model-list-in-category .model-item:hover {
  background: linear-gradient(180deg, #323250 0%, #272745 100%);
  border-color: rgba(100,100,140,0.3);
  box-shadow:
    0 3px 6px rgba(0,0,0,0.35),
    inset 0 1px 0 rgba(255,255,255,0.08);
}

/* Selected state with checkbox styling */
.model-list-in-category .model-item.selected {
  background: linear-gradient(180deg, rgba(60,50,90,0.95) 0%, rgba(45,40,70,0.95) 100%);
  /* Left border accent for selected */
  border-left: 3px solid #7c6cff;
  border-color: rgba(124,108,255,0.4);
  color: #c0c0ff;
  /* Inset shadow for selected */
  box-shadow:
    inset 0 2px 6px rgba(0,0,0,0.4),
    0 0 12px rgba(124,108,255,0.2);
  padding-left: calc(40px - 3px); /* Base padding minus border width */
}

/* Selected checkbox - glowing gradient */
.model-list-in-category .model-item.selected::before {
  background: var(--gradient-checkbox-selected);
  box-shadow: 0 0 8px rgba(124,108,255,0.5);
  border-color: rgba(124,108,255,0.6);
}

/* Show checkmark when selected */
.model-list-in-category .model-item.selected::after {
  border-color: white;
  opacity: 1;
}

.model-list-in-category .model-item.loading {
  animation: pulse 1.5s ease-in-out infinite;
}

@media (max-width: 768px) {
  .model-selector {
    grid-template-columns: 1fr;
  }
}

/* ============================================================================
   PROGRESS TRACKER STYLES
   ============================================================================ */

.progress-tracker-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  display: none;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.progress-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.progress-box {
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  min-width: 400px;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.progress-header {
  margin-bottom: var(--spacing-md);
}

.progress-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.progress-main {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.progress-bar-wrapper {
  background: rgba(30, 23, 53, 0.6);
  border-radius: var(--radius-sm);
  height: 28px;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border);
}

.progress-bar {
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  height: 100%;
  transition: width 0.3s ease;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 12px rgba(124, 92, 255, 0.4);
}

.progress-details {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-align: center;
  font-family: 'Graphik', sans-serif;
  font-weight: 400;
}

.progress-detail-text {
  font-size: 0.95rem;
  color: var(--text-primary);
  text-align: center;
  font-weight: 500;
}

.progress-section {
  border-top: 1px solid var(--border);
  padding-top: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.progress-section:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.progress-section-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.progress-section-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* Model Progress Items */
.model-progressses-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-height: 400px;
  overflow-y: auto;
}

.model-progress-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background: rgba(30, 23, 53, 0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.model-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-sm);
}

.model-progress-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
  word-break: break-word;
}

.model-progress-status {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.model-progress-status.downloading {
  background: var(--warning-dim);
  color: var(--warning);
}

.model-progress-status.cached {
  background: var(--success-dim);
  color: var(--success);
}

.model-progress-status.ready {
  background: var(--success-dim);
  color: var(--success);
}

.model-progress-bar-wrapper {
  background: rgba(30, 23, 53, 0.6);
  border-radius: 3px;
  height: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.model-progress-bar {
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  height: 100%;
  transition: width 0.2s ease;
  border-radius: 3px;
}

.model-progress-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.model-progress-percent {
  font-weight: 700;
  color: var(--text-secondary);
}

.model-progress-count {
  color: var(--text-muted);
}

/* Completion States */
.completion-success {
  border-color: var(--success);
}

.completion-warning {
  border-color: var(--warning);
}

.completion-error {
  border-color: var(--danger);
}

.progress-icon-success,
.progress-icon-warning,
.progress-icon-error {
  text-align: center;
  font-size: 3rem;
  font-weight: 700;
  margin-top: var(--spacing-md);
}

.progress-icon-success {
  color: var(--success);
}

.progress-icon-warning {
  color: var(--warning);
}

.progress-icon-error {
  color: var(--danger);
}

/* Responsive Design */
@media (max-width: 600px) {
  .progress-box {
    min-width: calc(100% - var(--spacing-lg) * 2);
    max-width: 100%;
    max-height: 90vh;
  }

  .model-progressses-container {
    max-height: 300px;
  }
}

/* ============================================================================
   UPDATE TOAST NOTIFICATION
   ============================================================================ */

.update-toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: rgba(20, 15, 35, 0.98);
  border: 2px solid var(--accent);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  z-index: 10000;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  transform: translateX(400px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.update-toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-primary);
}

.toast-content svg {
  color: var(--accent);
  flex-shrink: 0;
}

.toast-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.toast-btn {
  padding: 6px 12px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}

.toast-btn:hover {
  background: var(--accent);
  color: white;
}

.toast-reload {
  background: var(--accent);
  color: white;
}

.toast-reload:hover {
  background: var(--accent-bright);
}

/* ============================================================================
   MOBILE OPTIMIZATION - 2006 Purist (Phase 3)
   iPhone OS 1 Standards: Tactile, Obvious, Delightful
   ============================================================================ */

/* --------------------------------------------------------------------------
   3.4 Tablet Optimization (768px breakpoint)
   -------------------------------------------------------------------------- */
@media (max-width: 768px) and (min-width: 481px) {
  /* Touch target sizing for tablet */
  .analyze-btn,
  .new-analysis-btn,
  .category-btn,
  .clear-cache-btn,
  .toast-btn {
    min-height: var(--touch-min);
    padding: 10px 20px;
  }

  .model-item {
    min-height: var(--touch-min);
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) 40px; /* Preserve checkbox space */
  }

  .container {
    padding: 20px;
  }

  /* Ensure buttons are touchable */
  .model-category-actions button {
    min-height: var(--touch-min);
  }
}

/* --------------------------------------------------------------------------
   3.1-3.3 Mobile Optimization (480px breakpoint)
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
  /* 3.1.1 Touch Target Sizing - Minimum 44px height */
  .analyze-btn,
  .new-analysis-btn,
  .category-btn,
  .clear-cache-btn,
  .toast-btn,
  [class*="btn"] {
    min-height: var(--touch-min);
    font-size: 16px; /* 3.1.2 Prevent iOS zoom on focus */
    padding: 12px 24px;
  }

  /* 3.1.3 Model item touch targets */
  .model-item,
  .model-list-in-category .model-item {
    min-height: var(--touch-comfortable);
    padding: 12px 16px 12px 40px; /* Preserve checkbox space */
    font-size: 16px;
  }

  /* 3.2.1 Pill-shaped mobile buttons */
  .analyze-btn,
  .new-analysis-btn {
    border-radius: 22px;
  }

  /* 3.2.3-3.2.4 Active states for touch feedback - Enhanced for Apple HIG */
  .analyze-btn:active,
  .new-analysis-btn:active,
  .category-btn:active {
    transform: scale(0.96);
    transition: transform 0.1s ease;
    box-shadow:
      inset 0 4px 12px rgba(0, 0, 0, 0.4),
      0 2px 8px rgba(0, 0, 0, 0.3);
  }

  .analyze-btn.ready:active {
    background: linear-gradient(135deg, #6a4ecc 0%, #5a3eb8 100%);
  }

  /* Improved contrast for primary actions on mobile */
  .analyze-btn.ready {
    background: linear-gradient(135deg, var(--accent) 0%, #6a4ecc 100%);
    box-shadow:
      0 8px 24px rgba(124, 92, 255, 0.4),
      0 4px 12px rgba(0, 0, 0, 0.3),
      inset 0 1px 0 rgba(255, 255, 255, 0.2);
  }

  .new-analysis-btn {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.2) 0%, rgba(34, 211, 238, 0.15) 100%);
    border: 2px solid var(--cyan);
    color: var(--cyan);
  }

  .new-analysis-btn:active {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.3) 0%, rgba(34, 211, 238, 0.25) 100%);
  }

  /* 3.3.1-3.3.2 Container and card padding */
  .container {
    padding: 16px;
  }

  .model-category {
    margin-bottom: 16px;
    padding: var(--spacing-md);
  }

  /* 3.3.3 Stack action buttons vertically */
  .model-category-actions {
    flex-direction: column;
    gap: 8px;
  }

  .model-category-actions button {
    width: 100%;
    min-height: var(--touch-min);
  }

  /* 3.3.4 Hide redundant footer hint on small screens */
  .footer-hint {
    display: none;
  }

  /* Header adjustments for mobile */
  header {
    padding: var(--spacing-md);
  }

  .backend-info {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  /* Upload zone mobile adjustments */
  .upload-zone {
    padding: 40px var(--spacing-md);
  }

  /* Results panel mobile */
  .results-header {
    padding: var(--spacing-md);
  }

  .results-body {
    padding: var(--spacing-md);
  }

  /* Toast notification mobile */
  .update-toast {
    left: 10px;
    right: 10px;
    bottom: 10px;
    transform: translateY(200px);
  }

  .update-toast.show {
    transform: translateY(0);
  }

  .toast-actions {
    flex-direction: column;
    gap: 6px;
  }

  .toast-btn {
    width: 100%;
    text-align: center;
  }
}

/* --------------------------------------------------------------------------
   3.5 Touch Feedback for Touch Devices
   -------------------------------------------------------------------------- */
@media (hover: none) and (pointer: coarse) {
  /* Enhanced active states for touch devices */
  .analyze-btn:active,
  .new-analysis-btn:active,
  .category-btn:active,
  .model-item:active,
  .toast-btn:active {
    transform: scale(0.98);
    transition: transform 0.1s ease;
  }

  /* Remove hover effects that don't work well on touch */
  .model-category:hover {
    transform: none;
  }

  /* Ensure clear visual feedback on tap */
  .model-item:active {
    /* Use the same gradient as the desktop selected state for consistency */
    background: linear-gradient(90deg, var(--depth-accent-1) 0%, var(--depth-accent-2) 100%);
    border-color: var(--depth-accent-2);
  }
}

/* ========================================
   Forensic Analysis Panel
   ======================================== */

.forensics-container {
  margin-top: 1.5rem;
}

.forensics-container.hidden {
  display: none;
}

.forensic-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.forensic-divider::before,
.forensic-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan-dim, rgba(34, 211, 238, 0.25)), transparent);
}

.forensic-subsection {
  margin-bottom: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

.subsection-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
  user-select: none;
  font-size: 0.8rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  transition: background 0.2s ease;
}

.subsection-header:hover {
  background: rgba(255, 255, 255, 0.04);
}

.subsection-header .chevron {
  transition: transform 0.25s ease;
  opacity: 0.5;
  flex-shrink: 0;
}

.subsection-header.expanded .chevron {
  transform: rotate(180deg);
  opacity: 0.8;
}

.subsection-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.subsection-body.open {
  max-height: 2000px;
  overflow: visible;
}

.subsection-body > div {
  padding: 0 1rem 1rem;
}

/* Forensic Tables */

.forensic-table-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0.75rem 0 0.5rem;
}

.forensic-table-title:first-child {
  margin-top: 0;
}

.forensic-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}

.forensic-table td {
  padding: 0.35rem 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.forensic-table-label {
  color: rgba(255, 255, 255, 0.5);
  white-space: nowrap;
  width: 40%;
}

.forensic-table-value-mono {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.85);
  word-break: break-word;
}

/* AI Marker Flags */

.ai-markers-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.ai-marker-flag {
  display: inline-block;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Watermark Badges */

.watermark-results {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.watermark-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.watermark-generator {
  font-weight: 600;
  font-size: 0.8rem;
  color: #fbbf24;
}

.watermark-confidence {
  font-size: 0.72rem;
  font-family: 'Roboto Mono', monospace;
  color: rgba(255, 255, 255, 0.6);
}

.watermark-region {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.4);
  margin-left: auto;
}

/* Forensic Canvases (ELA, Spectrum) */

.forensic-canvas {
  width: 100%;
  max-width: 400px;
  height: auto;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  display: block;
  margin: 0.5rem 0;
  image-rendering: pixelated;
}

/* Forensic Stats Grid */

.forensic-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin: 0.75rem 0;
}

.stat-item {
  display: flex;
  flex-direction: column;
  padding: 0.4rem 0.5rem;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.stat-label {
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-value {
  font-size: 0.82rem;
  font-family: 'Roboto Mono', monospace;
  font-weight: 500;
  color: var(--cyan);
}

/* Interpretation Text */

.forensic-interpretation {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.5;
  margin: 0.5rem 0 0;
  padding: 0.5rem 0.75rem;
  border-left: 2px solid var(--cyan-dim, rgba(34, 211, 238, 0.25));
  background: rgba(34, 211, 238, 0.03);
  border-radius: 0 4px 4px 0;
}

/* Loading/Error/Empty States */

.forensic-loading {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.4);
  font-style: italic;
}

.forensic-error {
  font-size: 0.78rem;
  color: #f87171;
}

.forensic-empty {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.4);
}

/* Responsive: stack stats on mobile */

@media (max-width: 640px) {
  .forensic-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .forensic-canvas {
    max-width: 100%;
  }

  .watermark-badge {
    flex-wrap: wrap;
  }

  .watermark-region {
    margin-left: 0;
    width: 100%;
  }
}

/* ========================================
   Forensic Score Comparison
   ======================================== */

.forensic-comparison {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.score-comparison-row {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.score-card {
  flex: 1;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  text-align: center;
  text-align: center;
  border: 1px solid var(--border);
}

.score-card-onnx {
  background: rgba(34, 211, 238, 0.08);
  border-color: rgba(34, 211, 238, 0.25);
}

.score-card-forensic {
  background: rgba(168, 85, 247, 0.08);
  border-color: rgba(168, 85, 247, 0.25);
}

.score-card-final {
  background: rgba(124, 92, 255, 0.12);
  border-color: rgba(124, 92, 255, 0.35);
}

.score-card-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
  margin: 0 auto var(--spacing-xs);
  display: block;
}

.score-card-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: var(--spacing-xs);
}

.score-card-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.score-card-onnx .score-card-value { color: var(--cyan); }
.score-card-forensic .score-card-value { color: #a855f7; }
.score-card-final .score-card-value { color: var(--accent); }

/* Forensic Breakdown */

.forensic-breakdown {
  border-top: 1px solid var(--border);
  padding-top: var(--spacing-md);
}

.forensic-breakdown-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
}

.forensic-dim-row {
  display: grid;
  grid-template-columns: 160px 1fr 42px;
  gap: var(--spacing-sm);
  align-items: center;
  padding: 4px 0;
}

.forensic-dim-row.low-confidence {
  opacity: 0.45;
}

.forensic-dim-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.forensic-dim-low-signal {
  font-size: 0.6rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.06);
  padding: 1px 5px;
  border-radius: 3px;
}

.forensic-dim-bar-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  overflow: hidden;
}

.forensic-dim-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

.forensic-dim-value {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: right;
}

/* Override Notice */

.forensic-override-notice {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--warning);
}

/* Gradient Probability Bar */

.probability-bar {
  position: relative;
  height: 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  overflow: visible;
}

.probability-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  border-radius: 6px;
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.probability-marker {
  position: absolute;
  top: -14px;
  transform: translateX(-50%);
  transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 10;
  background: white;
  border-radius: 4px;
  padding: 2px 6px;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.4), 0 2px 8px rgba(0, 0, 0, 0.5);
}

.probability-value {
  display: inline-block;
  padding: 2px 6px;
  background: transparent;
  border: none;
  border-radius: 4px;
  font-family: 'Roboto Mono', monospace;
  font-size: 0.78rem;
  font-weight: 700;
  color: #111;
  white-space: nowrap;
  box-shadow: none;
}

/* Responsive */

@media (max-width: 640px) {
  .score-comparison-row {
    flex-direction: column;
  }

  .forensic-dim-row {
    grid-template-columns: 1fr 1fr 36px;
  }

  .forensic-dim-label {
    font-size: 0.7rem;
  }
}