/* ═══════════════════════════════════════════════════════════════════════════
   ExtractAudioLocal — 3D Glassmorphism Design System & Stylesheet
   Modern Layered Frosted Glass | Specular Highlights | Deep Elevation
   Primary: #EC4899 (Pink) | Accent: #8B5CF6 (Violet) → #2563EB (Electric Blue)
   Dark Void: #060A14 | GPU-Accelerated Compositing | WCAG AAA/AA 4.5:1+
   ═══════════════════════════════════════════════════════════════════════════ */

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

:root {
  /* ── 3D Glass Surfaces (Layered Elevation Scale) ── */
  --glass-1: rgba(15, 20, 38, 0.60);       /* Lowest tier: header, footer */
  --glass-2: rgba(20, 28, 50, 0.55);       /* Primary cards: extractor card */
  --glass-3: rgba(25, 35, 58, 0.50);       /* Nested panels: probe, progress, result */
  --glass-4: rgba(30, 40, 65, 0.45);       /* Recessed / interactive: dropzone, trust cards */
  --glass-5: rgba(255, 255, 255, 0.04);    /* Highest tier: hover overlays */

  /* ── Blur Radii Scale ── */
  --blur-sm: 8px;    /* Subtle: trust cards, tool badges */
  --blur-md: 16px;   /* Standard: nested cards, footer */
  --blur-lg: 28px;   /* Primary: extractor card */
  --blur-xl: 40px;   /* Hero: floating header navigation */

  /* ── 3D Multi-Depth Elevation Shadows ── */
  --elevation-1: 0 2px 10px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  --elevation-2: 0 8px 26px rgba(0, 0, 0, 0.38), inset 0 1px 1px rgba(255, 255, 255, 0.12), inset 0 -1px 1px rgba(0, 0, 0, 0.20);
  --elevation-3: 0 18px 52px rgba(0, 0, 0, 0.48), inset 0 1px 1px rgba(255, 255, 255, 0.16), inset 0 -2px 3px rgba(0, 0, 0, 0.25);
  --elevation-4: 0 26px 70px rgba(0, 0, 0, 0.58), inset 0 2px 2px rgba(255, 255, 255, 0.20), inset 0 -2px 4px rgba(0, 0, 0, 0.30);

  /* ── 3D Button Shadows (Tactile Bevel) ── */
  --shadow-glass-btn: 0 8px 24px rgba(236, 72, 153, 0.35), 0 2px 6px rgba(0, 0, 0, 0.3), inset 0 1px 1px rgba(255, 255, 255, 0.4), inset 0 -3px 6px rgba(0, 0, 0, 0.25);
  --shadow-accent-btn: 0 8px 24px rgba(37, 99, 235, 0.35), 0 2px 6px rgba(0, 0, 0, 0.3), inset 0 1px 1px rgba(255, 255, 255, 0.4), inset 0 -3px 6px rgba(0, 0, 0, 0.25);
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.22);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.32);

  /* ── Gradients & Specular Highlights ── */
  --gradient-primary: linear-gradient(135deg, #ec4899 0%, #8b5cf6 50%, #2563eb 100%);
  --gradient-primary-soft: linear-gradient(135deg, rgba(236, 72, 153, 0.15) 0%, rgba(139, 92, 246, 0.10) 50%, rgba(37, 99, 235, 0.15) 100%);
  --gradient-glass-fill: linear-gradient(135deg, rgba(255, 255, 255, 0.07) 0%, rgba(255, 255, 255, 0.02) 100%);
  --gradient-specular: linear-gradient(180deg, rgba(255, 255, 255, 0.30) 0%, rgba(255, 255, 255, 0) 60%);
  --gradient-edge-glow: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.45) 50%, transparent 100%);

  /* ── Luminous Border Scale ── */
  --border-glass: 1px solid rgba(255, 255, 255, 0.12);
  --border-glass-subtle: 1px solid rgba(255, 255, 255, 0.07);
  --border-glass-hover: 1px solid rgba(236, 72, 153, 0.45);
  --border-glass-accent: 1px solid rgba(139, 92, 246, 0.40);

  /* ── Opaque Surfaces (Performance Guard for below-the-fold cards) ── */
  --bg-void: #060a14;
  --bg-base: #0a0f1d;
  --bg-surface-low: #0f1629;
  --bg-surface: #141d34;
  --bg-surface-high: #1a2542;
  --bg-surface-highest: #223054;
  --bg-glass: var(--glass-1);
  --bg-glass-card: var(--glass-2);

  /* ── Primary & Functional Accent Colors ── */
  --color-primary: #ec4899;
  --color-primary-hover: #f472b6;
  --color-primary-dim: rgba(236, 72, 153, 0.15);
  --color-primary-glow: rgba(236, 72, 153, 0.35);

  --color-secondary: #8b5cf6;
  --color-secondary-dim: rgba(139, 92, 246, 0.15);

  --color-accent: #2563eb;
  --color-accent-hover: #3b82f6;
  --color-accent-dim: rgba(37, 99, 235, 0.15);
  --color-accent-glow: rgba(37, 99, 235, 0.35);

  /* ── Functional Status Colors ── */
  --color-success: #10b981;
  --color-success-dim: rgba(16, 185, 129, 0.15);
  --color-warning: #f59e0b;
  --color-warning-dim: rgba(245, 158, 11, 0.15);
  --color-destructive: #ef4444;
  --color-destructive-dim: rgba(239, 68, 68, 0.15);

  /* ── Typography & Text Colors ── */
  --color-foreground: #ffffff;
  --color-foreground-muted: #94a3b8;
  --color-foreground-dim: #64748b;
  --color-foreground-inverse: #060a14;

  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-card: rgba(255, 255, 255, 0.12);
  --color-border-hover: rgba(236, 72, 153, 0.45);
  --color-border-accent: rgba(37, 99, 235, 0.45);

  /* ── Spacing Scale ── */
  --space-xs: 0.25rem;  /* 4px */
  --space-sm: 0.5rem;   /* 8px */
  --space-md: 1rem;     /* 16px */
  --space-lg: 1.5rem;   /* 24px */
  --space-xl: 2rem;     /* 32px */
  --space-2xl: 3rem;    /* 48px */
  --space-3xl: 4rem;    /* 64px */

  /* ── Radii (Pill & Curvature) ── */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-full: 9999px;

  /* ── Layout Dimensions ── */
  --max-tool-width: 660px;
  --max-content-width: 920px;

  /* ── Fonts ── */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Work Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* ── Easing & Transitions ── */
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 240ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 360ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ═══════════════════════════════════════════════
   RESET & CORE BASE
   ═══════════════════════════════════════════════ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--bg-void);
  color: var(--color-foreground);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-void);
  background-image: 
    radial-gradient(circle at 18% 12%, rgba(236, 72, 153, 0.10) 0%, transparent 45%),
    radial-gradient(circle at 82% 18%, rgba(37, 99, 235, 0.10) 0%, transparent 45%),
    radial-gradient(circle at 50% 60%, rgba(139, 92, 246, 0.05) 0%, transparent 60%);
  background-attachment: fixed;
  overflow-x: hidden;
  position: relative;
}

/* Atmospheric Ambient Glowing Orbs with slow organic drift */
.ambient-glow {
  position: fixed;
  top: -220px;
  left: 50%;
  transform: translateX(-50%);
  width: 860px;
  height: 520px;
  background: radial-gradient(ellipse at center, rgba(236, 72, 153, 0.12) 0%, rgba(139, 92, 246, 0.08) 35%, rgba(37, 99, 235, 0.05) 65%, transparent 80%);
  pointer-events: none;
  z-index: 0;
  animation: ambientFloat 18s ease-in-out infinite alternate;
  will-change: transform;
}

@keyframes ambientFloat {
  0% {
    transform: translateX(-50%) translateY(0) scale(1);
  }
  50% {
    transform: translateX(-48%) translateY(25px) scale(1.06);
  }
  100% {
    transform: translateX(-52%) translateY(10px) scale(0.96);
  }
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-foreground);
  line-height: 1.22;
  letter-spacing: -0.025em;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast), text-shadow var(--transition-fast);
  cursor: pointer;
}

a:hover {
  color: var(--color-primary-hover);
  text-shadow: 0 0 10px rgba(236, 72, 153, 0.35);
  text-decoration: underline;
}

button {
  cursor: pointer;
  font-family: var(--font-body);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* ═══════════════════════════════════════════════
   SITE HEADER & FLOATING GLASS NAVIGATION
   ═══════════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-1);
  backdrop-filter: blur(var(--blur-xl));
  -webkit-backdrop-filter: blur(var(--blur-xl));
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.35), inset 0 -1px 0 rgba(255, 255, 255, 0.04);
  padding: 0.85rem 1.5rem;
  transition: background var(--transition-normal);
}

/* Luminous specular edge line on top of header */
.site-header::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-edge-glow);
  opacity: 0.6;
  pointer-events: none;
}

.nav-container {
  max-width: var(--max-content-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.035em;
  color: var(--color-foreground);
  text-decoration: none !important;
  transition: transform var(--transition-fast);
}

.brand-logo:hover {
  transform: translateY(-1px);
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.25) 0%, rgba(139, 92, 246, 0.18) 50%, rgba(37, 99, 235, 0.20) 100%);
  border: 1px solid rgba(255, 255, 255, 0.20);
  box-shadow: 0 4px 12px rgba(236, 72, 153, 0.25), inset 0 1px 1px rgba(255, 255, 255, 0.3);
  color: var(--color-primary);
  transition: all var(--transition-fast);
}

.brand-logo:hover .brand-icon {
  border-color: rgba(236, 72, 153, 0.5);
  box-shadow: 0 0 16px rgba(236, 72, 153, 0.45), inset 0 1px 1px rgba(255, 255, 255, 0.5);
  transform: scale(1.05);
}

.brand-text-accent {
  background: linear-gradient(135deg, #ec4899 0%, #a855f7 50%, #60a5fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-hub-select {
  background: var(--glass-3);
  color: var(--color-foreground-muted);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.95rem;
  font-size: 0.85rem;
  font-family: var(--font-body);
  font-weight: 500;
  cursor: pointer;
  outline: none;
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  box-shadow: var(--elevation-1);
  transition: border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-hub-select:hover, .nav-hub-select:focus {
  border-color: rgba(236, 72, 153, 0.5);
  color: var(--color-foreground);
  box-shadow: 0 0 12px rgba(236, 72, 153, 0.25);
}

/* ═══════════════════════════════════════════════
   MAIN CONTAINER
   ═══════════════════════════════════════════════ */
.main-wrapper {
  flex: 1;
  width: 100%;
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem 1.25rem;
  position: relative;
  z-index: 1;
}

/* Tool Hero Header */
.tool-hero {
  text-align: center;
  margin-bottom: 2.5rem;
}

.tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-family: var(--font-heading);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(236, 72, 153, 0.12);
  color: #f472b6;
  border: 1px solid rgba(236, 72, 153, 0.35);
  box-shadow: 0 2px 10px rgba(236, 72, 153, 0.15), inset 0 1px 1px rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  margin-bottom: 1.15rem;
  transition: all var(--transition-fast);
}

.tool-badge:hover {
  border-color: rgba(236, 72, 153, 0.6);
  box-shadow: 0 0 16px rgba(236, 72, 153, 0.3), inset 0 1px 1px rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.tool-badge svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.tool-hero h1 {
  font-size: clamp(2rem, 5.5vw, 2.85rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.04em;
  margin-bottom: 0.9rem;
  color: var(--color-foreground);
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.5), 0 0 32px rgba(236, 72, 153, 0.15);
}

.tool-hero p {
  font-size: clamp(1rem, 2.6vw, 1.15rem);
  color: var(--color-foreground-muted);
  max-width: 650px;
  margin: 0 auto;
  line-height: 1.65;
  letter-spacing: 0.01em;
}

/* ═══════════════════════════════════════════════
   3D GLASS EXTRACTOR CARD (PRIMARY CENTREPIECE)
   ═══════════════════════════════════════════════ */
.extractor-card {
  max-width: var(--max-tool-width);
  margin: 0 auto 2.5rem auto;
  background: var(--gradient-glass-fill), var(--glass-2);
  backdrop-filter: blur(var(--blur-lg));
  -webkit-backdrop-filter: blur(var(--blur-lg));
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--elevation-3);
  position: relative;
  transition: transform var(--transition-slow), box-shadow var(--transition-normal), border-color var(--transition-normal);
  transform-style: preserve-3d;
  perspective: 1000px;
}

/* Luminous specular highlight on card top edge */
.extractor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1.5px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.6) 30%, rgba(236, 72, 153, 0.5) 50%, rgba(255, 255, 255, 0.6) 70%, transparent 100%);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  opacity: 0.85;
  pointer-events: none;
}

/* Ambient edge glow around card perimeter on hover */
.extractor-card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius-xl) + 1px);
  padding: 1px;
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.3) 0%, rgba(139, 92, 246, 0.2) 50%, rgba(37, 99, 235, 0.3) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.4;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.extractor-card:hover {
  border-color: rgba(255, 255, 255, 0.24);
  box-shadow: var(--elevation-4), 0 0 30px rgba(236, 72, 153, 0.18), 0 0 60px rgba(37, 99, 235, 0.12);
}

.extractor-card:hover::after {
  opacity: 0.9;
}

/* ═══════════════════════════════════════════════
   DROPZONE — RECESSED 3D GLASS PLATE
   ═══════════════════════════════════════════════ */
.dropzone-container {
  position: relative;
  border: 2px dashed rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: 2.75rem 1.5rem;
  text-align: center;
  cursor: pointer;
  background: var(--glass-4);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  transition: all var(--transition-normal);
  overflow: hidden;
  box-shadow: inset 0 4px 20px rgba(0, 0, 0, 0.6), inset 0 1px 3px rgba(0, 0, 0, 0.8), 0 1px 1px rgba(255, 255, 255, 0.05);
}

/* Subtle glass shimmer sweep effect on hover */
.dropzone-container::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 40%, rgba(255, 255, 255, 0.03) 50%, transparent 60%);
  transform: rotate(25deg) translateY(-100%);
  pointer-events: none;
  transition: transform 0.8s ease-in-out;
}

.dropzone-container:hover::before {
  transform: rotate(25deg) translateY(100%);
}

.dropzone-container:hover, .dropzone-container.drag-over {
  border-color: var(--color-primary);
  background: rgba(236, 72, 153, 0.08);
  box-shadow: inset 0 4px 24px rgba(0, 0, 0, 0.7), inset 0 0 32px rgba(236, 72, 153, 0.20), 0 0 20px rgba(236, 72, 153, 0.25);
  animation: dropzoneBorderPulse 2s ease-in-out infinite;
}

@keyframes dropzoneBorderPulse {
  0%, 100% {
    border-color: rgba(236, 72, 153, 0.5);
  }
  50% {
    border-color: rgba(139, 92, 246, 0.8);
  }
}

.dropzone-file-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  z-index: 10;
}

.dropzone-icon-wrap {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.15rem auto;
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.22) 0%, rgba(139, 92, 246, 0.16) 50%, rgba(37, 99, 235, 0.16) 100%);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(236, 72, 153, 0.25), inset 0 1px 1px rgba(255, 255, 255, 0.35);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast);
}

.dropzone-container:hover .dropzone-icon-wrap {
  transform: scale(1.10) translateY(-2px);
  color: #f472b6;
  box-shadow: 0 8px 24px rgba(236, 72, 153, 0.45), inset 0 1px 1px rgba(255, 255, 255, 0.5);
}

.dropzone-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.45rem;
  color: var(--color-foreground);
  letter-spacing: -0.015em;
}

.dropzone-subtitle {
  font-size: 0.92rem;
  color: var(--color-foreground-muted);
  line-height: 1.5;
}

.dropzone-chips {
  margin-top: 1.35rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.format-chip {
  font-size: 0.74rem;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-foreground-muted);
  border: 1px solid rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-fast);
}

.dropzone-container:hover .format-chip {
  border-color: rgba(255, 255, 255, 0.16);
  color: var(--color-foreground);
}

/* ═══════════════════════════════════════════════
   PROBE & FILE METADATA CARD (NESTED GLASS)
   ═══════════════════════════════════════════════ */
.file-meta-card {
  display: none;
  background: var(--glass-3);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--elevation-2);
  position: relative;
  overflow: hidden;
  animation: glassSlideDown 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

.file-meta-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-edge-glow);
  opacity: 0.5;
  pointer-events: none;
}

@keyframes glassSlideDown {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.file-meta-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.85rem;
}

.file-title-wrap {
  overflow: hidden;
}

.file-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-foreground);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
}

.file-size-badge {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--color-foreground-muted);
}

.change-file-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  color: var(--color-foreground-muted);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.change-file-btn:hover {
  background: rgba(236, 72, 153, 0.15);
  color: var(--color-foreground);
  border-color: rgba(236, 72, 153, 0.5);
  box-shadow: 0 0 10px rgba(236, 72, 153, 0.2);
}

.probe-result-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.84rem;
  color: var(--color-success);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.30);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.85rem;
  font-family: var(--font-mono);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.08);
}

.probe-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

/* Multi-track audio stream selector */
.multi-track-container {
  display: none;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.12);
}

.control-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-foreground-muted);
  margin-bottom: 0.45rem;
}

.track-select {
  width: 100%;
  background: var(--glass-4);
  color: var(--color-foreground);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.85rem;
  font-size: 0.88rem;
  font-family: var(--font-mono);
  outline: none;
  cursor: pointer;
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  box-shadow: var(--elevation-1);
  transition: border-color var(--transition-fast);
}

.track-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 12px rgba(236, 72, 153, 0.25);
}

/* ═══════════════════════════════════════════════
   OPTIONS SECTION (FORMAT, QUALITY, TRIM)
   ═══════════════════════════════════════════════ */
.options-section {
  display: none;
  margin-bottom: 1.5rem;
  animation: glassFadeIn 0.25s ease-out;
}

@keyframes glassFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

/* Format Pills Tray */
.format-pills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.55rem;
  background: var(--glass-4);
  padding: 0.4rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.4);
}

.format-pill-btn {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.5rem;
  color: var(--color-foreground-muted);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.pill-sub {
  font-family: var(--font-body);
  font-size: 0.70rem;
  font-weight: 500;
  color: var(--color-foreground-dim);
  transition: color var(--transition-fast);
}

.format-pill-btn:hover {
  color: var(--color-foreground);
  background: rgba(255, 255, 255, 0.04);
}

.format-pill-btn.active {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.20) 0%, rgba(139, 92, 246, 0.15) 100%);
  color: #ffffff;
  border: 1px solid rgba(236, 72, 153, 0.45);
  box-shadow: 0 4px 14px rgba(236, 72, 153, 0.25), inset 0 1px 1px rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.format-pill-btn.active .pill-sub {
  color: #f472b6;
}

/* Quality Preset Selectors */
.quality-row {
  margin-top: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.quality-pills {
  display: flex;
  gap: 0.5rem;
}

.quality-btn {
  background: var(--glass-4);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius-sm);
  color: var(--color-foreground-muted);
  font-size: 0.80rem;
  font-family: var(--font-mono);
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  cursor: pointer;
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  box-shadow: var(--elevation-1);
  transition: all var(--transition-fast);
}

.quality-btn:hover {
  color: var(--color-foreground);
  border-color: rgba(255, 255, 255, 0.22);
}

.quality-btn.active {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.25) 0%, rgba(139, 92, 246, 0.15) 100%);
  color: var(--color-foreground);
  border-color: rgba(236, 72, 153, 0.55);
  box-shadow: 0 2px 10px rgba(236, 72, 153, 0.3), inset 0 1px 1px rgba(255, 255, 255, 0.25);
}

/* Trim Range Accordion (Recessed Glass) */
.trim-accordion {
  margin-top: 1rem;
  background: var(--glass-4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: border-color var(--transition-fast);
}

.trim-header {
  padding: 0.8rem 1.15rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-foreground-muted);
  transition: color var(--transition-fast);
}

.trim-header:hover {
  color: var(--color-foreground);
}

.trim-header-left {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.trim-chevron {
  transition: transform var(--transition-fast);
  color: var(--color-foreground-dim);
}

.trim-body {
  padding: 1rem 1.15rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: none;
}

.trim-inputs {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.75rem;
}

.time-input-wrap input {
  width: 100%;
  background: var(--glass-3);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  color: var(--color-foreground);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  padding: 0.5rem 0.7rem;
  text-align: center;
  outline: none;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.4);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.time-input-wrap input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 12px rgba(236, 72, 153, 0.3);
}

.trim-note {
  font-size: 0.76rem;
  color: var(--color-foreground-dim);
  margin-top: 0.55rem;
}

/* ═══════════════════════════════════════════════
   PRIMARY ACTION CTA (3D GLASS BEVEL & GRADIENT SHEEN)
   ═══════════════════════════════════════════════ */
.action-container {
  display: none;
  margin-bottom: 1.35rem;
}

.primary-extract-btn {
  width: 100%;
  background: var(--gradient-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  padding: 1.05rem 1.5rem;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  box-shadow: var(--shadow-glass-btn);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
  position: relative;
  overflow: hidden;
}

/* Top specular highlight bevel */
.primary-extract-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 48%;
  background: var(--gradient-specular);
  pointer-events: none;
  border-top-left-radius: var(--radius-md);
  border-top-right-radius: var(--radius-md);
}

/* Gradient sheen sweep animation on hover */
.primary-extract-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-25deg);
  pointer-events: none;
  transition: left 0.6s ease;
}

.primary-extract-btn:hover::before {
  left: 140%;
}

.primary-extract-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(236, 72, 153, 0.45), 0 4px 10px rgba(0, 0, 0, 0.3), inset 0 1px 1px rgba(255, 255, 255, 0.6), inset 0 -3px 6px rgba(0, 0, 0, 0.25);
  filter: brightness(1.06);
}

.primary-extract-btn:active {
  transform: translateY(1px);
  box-shadow: 0 2px 8px rgba(236, 72, 153, 0.3), inset 0 2px 4px rgba(0, 0, 0, 0.5);
}

.primary-extract-btn svg {
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════
   PROGRESS CARD (ANIMATED PROCESSING SHIMMER)
   ═══════════════════════════════════════════════ */
.progress-card {
  display: none;
  background: var(--glass-3);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border: 1px solid rgba(236, 72, 153, 0.4);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--elevation-2), 0 0 32px rgba(236, 72, 153, 0.15);
  animation: glassProgressPulse 2.5s ease-in-out infinite alternate;
}

@keyframes glassProgressPulse {
  0% {
    border-color: rgba(236, 72, 153, 0.35);
    box-shadow: var(--elevation-2), 0 0 20px rgba(236, 72, 153, 0.1);
  }
  100% {
    border-color: rgba(139, 92, 246, 0.55);
    box-shadow: var(--elevation-2), 0 0 36px rgba(139, 92, 246, 0.2);
  }
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
  font-size: 0.95rem;
  font-weight: 700;
}

.progress-title {
  color: #f472b6;
  font-family: var(--font-heading);
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.progress-percent {
  font-family: var(--font-mono);
  color: var(--color-foreground);
  font-size: 1rem;
}

.progress-bar-bg {
  width: 100%;
  height: 12px;
  background: var(--glass-4);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.6);
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
  box-shadow: 0 0 16px rgba(236, 72, 153, 0.6);
  position: relative;
}

/* Continuous shimmer highlight sliding across progress bar fill */
.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.5) 50%, transparent 100%);
  animation: shimmerSweep 1.5s infinite linear;
}

@keyframes shimmerSweep {
  0% { left: -100%; }
  100% { left: 100%; }
}

.progress-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.85rem;
  font-size: 0.80rem;
  color: var(--color-foreground-muted);
}

.progress-elapsed {
  font-family: var(--font-mono);
}

.cancel-btn {
  background: transparent;
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #f87171;
  padding: 0.3rem 0.75rem;
  font-size: 0.78rem;
  font-family: var(--font-body);
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cancel-btn:hover {
  background: rgba(239, 68, 68, 0.18);
  border-color: rgba(239, 68, 68, 0.6);
}

/* Wake lock warning */
.wakelock-banner {
  margin-top: 0.85rem;
  font-size: 0.80rem;
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.28);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

/* ═══════════════════════════════════════════════
   RESULT CARD (SUCCESS FROSTED GLASS)
   ═══════════════════════════════════════════════ */
.result-card {
  display: none;
  background: var(--glass-3);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border: 1px solid rgba(16, 185, 129, 0.40);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--elevation-2), 0 0 32px rgba(16, 185, 129, 0.15);
  animation: glassSlideDown 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

.result-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-success);
  background: rgba(16, 185, 129, 0.14);
  border: 1px solid rgba(16, 185, 129, 0.30);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

/* ═══════════════════════════════════════════════
   SPOTIFY-STYLE AUDIO PLAYER COMPONENT
   ═══════════════════════════════════════════════ */
.result-audio-player {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.spotify-player {
  background: linear-gradient(145deg, rgba(20, 24, 33, 0.88) 0%, rgba(11, 14, 20, 0.95) 100%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.4rem;
  margin-bottom: 1.35rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45), inset 0 1px 1px rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.spotify-player::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, #1ed760 50%, transparent 100%);
  opacity: 0.6;
  pointer-events: none;
}

.spotify-player.is-playing {
  border-color: rgba(30, 215, 96, 0.35);
  box-shadow: 0 8px 36px rgba(0, 0, 0, 0.5), 0 0 28px rgba(30, 215, 96, 0.15), inset 0 1px 1px rgba(255, 255, 255, 0.2);
}

/* ── Top Header Row ──────────────────────────── */
.sp-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.15rem;
}

.sp-art-wrap {
  position: relative;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sp-vinyl {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: radial-gradient(circle, #2a2a2a 0%, #111111 70%, #080808 100%);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.6), inset 0 0 0 2px rgba(255, 255, 255, 0.15);
  position: relative;
  animation: spSpinVinyl 8s linear infinite;
  animation-play-state: paused;
}

.spotify-player.is-playing .sp-vinyl {
  animation-play-state: running;
}

@keyframes spSpinVinyl {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.sp-vinyl-ring {
  position: absolute;
  top: 6px;
  left: 6px;
  right: 6px;
  bottom: 6px;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, 0.12);
}

.sp-vinyl-center {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 14px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: #1ed760;
  box-shadow: 0 0 8px rgba(30, 215, 96, 0.6), inset 0 0 0 3px #121212;
}

/* Equalizer overlay */
.sp-equalizer {
  position: absolute;
  bottom: 4px;
  right: 4px;
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 14px;
  background: rgba(10, 10, 10, 0.85);
  padding: 2px 3px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.sp-bar {
  width: 2px;
  height: 3px;
  background: #1ed760;
  border-radius: 1px;
  transition: height 0.15s ease;
}

.spotify-player.is-playing .bar-1 { animation: spEqualize 0.8s ease-in-out infinite alternate; }
.spotify-player.is-playing .bar-2 { animation: spEqualize 0.6s ease-in-out 0.2s infinite alternate; }
.spotify-player.is-playing .bar-3 { animation: spEqualize 0.9s ease-in-out 0.1s infinite alternate; }
.spotify-player.is-playing .bar-4 { animation: spEqualize 0.7s ease-in-out 0.3s infinite alternate; }

@keyframes spEqualize {
  0% { height: 3px; }
  50% { height: 12px; }
  100% { height: 6px; }
}

.sp-info {
  flex: 1;
  min-width: 0;
}

.sp-title {
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--color-foreground);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -0.01em;
}

.sp-subtitle {
  font-size: 0.78rem;
  color: var(--color-foreground-muted);
  margin-top: 0.15rem;
}

.sp-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: #1ed760;
  background: rgba(30, 215, 96, 0.12);
  border: 1px solid rgba(30, 215, 96, 0.35);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  flex-shrink: 0;
}

/* ── Main Controls & Scrubber Body ───────────── */
.sp-body {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.sp-controls-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
}

.sp-ghost-btn {
  background: transparent;
  border: none;
  color: var(--color-foreground-muted);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.sp-ghost-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  transform: scale(1.08);
}

.sp-ghost-btn:active {
  transform: scale(0.95);
}

/* Spotify Play Button */
.sp-play-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #1ed760;
  color: #121212;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 18px rgba(30, 215, 96, 0.45);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  position: relative;
}

.sp-play-btn:hover {
  transform: scale(1.08);
  background: #1fdf64;
  box-shadow: 0 6px 26px rgba(30, 215, 96, 0.65);
}

.sp-play-btn:active {
  transform: scale(0.95);
  box-shadow: 0 2px 10px rgba(30, 215, 96, 0.35);
}

.sp-play-icon {
  margin-left: 2px; /* Visual optical alignment for play triangle */
}

/* ── Scrubber Timeline ───────────────────────── */
.sp-timeline {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
}

.sp-time {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--color-foreground-dim);
  font-variant-numeric: tabular-nums;
  min-width: 32px;
  text-align: center;
}

.sp-track {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  padding: 4px 0; /* Expanded touch hit area */
  background-clip: content-box;
  transition: height var(--transition-fast);
}

.sp-track:hover {
  height: 8px;
}

.sp-track-fill {
  position: absolute;
  top: 4px;
  left: 0;
  height: calc(100% - 8px);
  width: 0%;
  background: #1ed760;
  border-radius: var(--radius-full);
  pointer-events: none;
  transition: background var(--transition-fast);
}

.sp-track:hover .sp-track-fill {
  background: #1fdf64;
  box-shadow: 0 0 10px rgba(30, 215, 96, 0.5);
}

.sp-track-thumb {
  position: absolute;
  top: 50%;
  left: 0%;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
  transform: translate(-50%, -50%) scale(0);
  pointer-events: none;
  transition: transform var(--transition-fast);
}

.sp-track:hover .sp-track-thumb,
.sp-track:focus-visible .sp-track-thumb {
  transform: translate(-50%, -50%) scale(1);
}

/* ── Extras: Speed & Volume ──────────────────── */
.sp-extras {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.35rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sp-speed-pill {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-foreground-muted);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sp-speed-pill:hover {
  color: #1ed760;
  border-color: rgba(30, 215, 96, 0.4);
  background: rgba(30, 215, 96, 0.08);
}

.sp-vol-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sp-vol-btn {
  width: 28px;
  height: 28px;
}

.sp-slider-wrap {
  width: 85px;
  display: flex;
  align-items: center;
}

.sp-slider {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-full);
  outline: none;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.sp-slider:hover {
  background: rgba(255, 255, 255, 0.3);
}

.sp-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #1ed760;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.sp-slider::-webkit-slider-thumb:hover {
  transform: scale(1.25);
}

.sp-slider::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #1ed760;
  border: none;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
  cursor: pointer;
}


.result-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin-bottom: 0.95rem;
}

.download-btn {
  background: var(--gradient-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.95rem 1.25rem;
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  box-shadow: var(--shadow-glass-btn);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.download-btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 48%;
  background: var(--gradient-specular);
  pointer-events: none;
  border-top-left-radius: var(--radius-md);
  border-top-right-radius: var(--radius-md);
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(236, 72, 153, 0.45), inset 0 1px 1px rgba(255, 255, 255, 0.55);
  filter: brightness(1.06);
}

.download-btn:active {
  transform: translateY(1px);
  box-shadow: 0 2px 8px rgba(236, 72, 153, 0.3), inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

.share-btn {
  background: var(--glass-4);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--color-foreground);
  border-radius: var(--radius-md);
  padding: 0.95rem 1.25rem;
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  box-shadow: var(--elevation-1);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  transition: all var(--transition-fast);
}

.share-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(236, 72, 153, 0.5);
  box-shadow: 0 0 16px rgba(236, 72, 153, 0.25);
  transform: translateY(-1px);
}

.reset-btn {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--color-foreground-dim);
  font-size: 0.86rem;
  cursor: pointer;
  padding: 0.5rem;
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.reset-btn:hover {
  color: var(--color-foreground-muted);
}

/* Error Banner */
.error-banner {
  display: none;
  background: rgba(239, 68, 68, 0.14);
  border: 1px solid rgba(239, 68, 68, 0.45);
  color: #fca5a5;
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.90rem;
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.2);
}

/* Capability Banner (browser doesn't support WASM) */
.capability-banner {
  background: rgba(239, 68, 68, 0.18);
  border: 1px solid rgba(239, 68, 68, 0.55);
  color: #fca5a5;
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: 0.90rem;
  line-height: 1.6;
  box-shadow: 0 4px 20px rgba(239, 68, 68, 0.25);
}

/* File Size Memory Warnings */
.file-size-warning {
  border-radius: var(--radius-md);
  padding: 0.65rem 1rem;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  line-height: 1.5;
}
.file-size-warning.warning-medium {
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: #fcd34d;
}
.file-size-warning.warning-high {
  background: rgba(249, 115, 22, 0.15);
  border: 1px solid rgba(249, 115, 22, 0.5);
  color: #fdba74;
}

/* ═══════════════════════════════════════════════
   PRIVACY TRUST CARDS (3-TIER GLASS GRID)
   ═══════════════════════════════════════════════ */
.trust-cards-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.trust-card {
  background: var(--glass-4);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius-md);
  padding: 0.85rem 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  box-shadow: var(--elevation-1);
  transition: all var(--transition-fast);
}

.trust-card:hover {
  border-color: rgba(236, 72, 153, 0.35);
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35), 0 0 12px rgba(236, 72, 153, 0.15);
}

.trust-card svg {
  color: var(--color-success);
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.trust-card-content {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.trust-card-title {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-foreground);
  line-height: 1.2;
}

.trust-card-desc {
  font-size: 0.70rem;
  color: var(--color-foreground-dim);
  line-height: 1.3;
  margin-top: 0.1rem;
}

/* Fallback for legacy single privacy chip */
.privacy-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  color: var(--color-foreground-muted);
  background: var(--glass-4);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius-full);
  padding: 0.6rem 1.25rem;
  margin-top: 1.35rem;
  text-align: center;
  box-shadow: var(--elevation-1);
}

.privacy-chip svg {
  color: var(--color-success);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════
   PRE-RESERVED AD SLOTS (CLS = 0)
   ═══════════════════════════════════════════════ */
.ad-slot-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 2rem auto;
  overflow: hidden;
}

.ad-slot-label {
  font-size: 0.70rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-foreground-dim);
  margin-bottom: 0.4rem;
}

.ad-slot-banner {
  width: 320px;
  height: 50px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 768px) {
  .ad-slot-banner {
    width: 728px;
    height: 90px;
  }
}

/* ═══════════════════════════════════════════════
   SEO CONTENT ARTICLE & GUIDE SECTION
   (PERF GUARD: OPAQUE GLASS-TINTED BACKGROUNDS)
   ═══════════════════════════════════════════════ */
.seo-article {
  max-width: var(--max-content-width);
  margin: 3rem auto 0 auto;
}

.seo-card {
  background: var(--bg-surface-low);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--elevation-2);
  position: relative;
  overflow: hidden;
}

/* Top luminous border line */
.seo-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.25) 50%, transparent 100%);
  opacity: 0.7;
}

.seo-card h2 {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--color-foreground);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.seo-card h2 svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.seo-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 1.5rem 0 0.55rem 0;
  color: #f472b6;
}

.seo-card p {
  color: var(--color-foreground-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.seo-card ul, .seo-card ol {
  margin-left: 1.4rem;
  margin-bottom: 1.25rem;
  color: var(--color-foreground-muted);
  font-size: 0.98rem;
  line-height: 1.7;
}

.seo-card li {
  margin-bottom: 0.5rem;
}

/* Device Guides Grid */
.device-guides-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.25rem;
}

@media (min-width: 640px) {
  .device-guides-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.device-guide-box {
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  box-shadow: var(--elevation-1);
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.device-guide-box:hover {
  border-color: rgba(236, 72, 153, 0.35);
  transform: translateY(-2px);
  box-shadow: var(--elevation-2), 0 0 16px rgba(236, 72, 153, 0.12);
}

.device-guide-box h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-foreground);
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.device-guide-box h4 svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

/* Comparison Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 1.35rem 0;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.09);
  box-shadow: var(--elevation-1);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.90rem;
  text-align: left;
}

.comparison-table th {
  background: var(--bg-surface);
  padding: 0.9rem 1.15rem;
  color: var(--color-foreground);
  font-family: var(--font-heading);
  font-weight: 700;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  white-space: nowrap;
}

.comparison-table td {
  padding: 0.85rem 1.15rem;
  color: var(--color-foreground-muted);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.table-highlight {
  color: var(--color-success) !important;
  font-weight: 600;
}

/* FAQ Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
  margin-top: 1.25rem;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--elevation-1);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(236, 72, 153, 0.35);
  box-shadow: var(--elevation-2);
}

.faq-question {
  padding: 1.05rem 1.25rem;
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--color-foreground);
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
  line-height: 1;
}

.faq-item[open] .faq-question::after {
  content: "−";
}

.faq-answer {
  padding: 0 1.25rem 1.15rem 1.25rem;
  font-size: 0.95rem;
  color: var(--color-foreground-muted);
  line-height: 1.7;
}

/* 9-Page Hub Grid */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.95rem;
  margin-top: 1.25rem;
}

.hub-card {
  background: var(--bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-md);
  padding: 0.95rem 1.25rem;
  color: var(--color-foreground);
  text-decoration: none !important;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 600;
  box-shadow: var(--elevation-1);
  transition: all var(--transition-fast);
}

.hub-card:hover {
  border-color: var(--color-primary);
  background: var(--bg-surface-high);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 16px rgba(236, 72, 153, 0.2);
}

.hub-card-tag {
  font-size: 0.74rem;
  font-family: var(--font-mono);
  color: #f472b6;
  background: rgba(236, 72, 153, 0.14);
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(236, 72, 153, 0.25);
}

/* ═══════════════════════════════════════════════
   FOOTER (GROUND-LEVEL GLASS)
   ═══════════════════════════════════════════════ */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  background: var(--glass-1);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  padding: 3rem 1.25rem 2rem 1.25rem;
  margin-top: auto;
  font-size: 0.88rem;
  color: var(--color-foreground-dim);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.25);
}

.footer-container {
  max-width: var(--max-content-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 640px) {
  .footer-container {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-brand {
  max-width: 360px;
}

.footer-brand strong {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-foreground);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.65rem;
}

.footer-links a {
  color: var(--color-foreground-muted);
}

.footer-links a:hover {
  color: var(--color-primary);
}

/* ═══════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS (MOBILE & TABLET)
   ═══════════════════════════════════════════════ */
@media (max-width: 639px) {
  .main-wrapper {
    padding: 1.75rem 1rem 3rem 1rem;
  }

  .extractor-card {
    padding: 1.25rem 1rem;
    border-radius: var(--radius-lg);
  }

  .dropzone-container {
    padding: 2rem 1rem;
  }

  .dropzone-title {
    font-size: 1.12rem;
  }

  .trust-cards-row {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .result-actions {
    grid-template-columns: 1fr;
  }

  .seo-card {
    padding: 1.25rem 1rem;
  }

  .quality-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.65rem;
  }

  .quality-pills {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.4rem;
  }

  .quality-btn {
    text-align: center;
    padding: 0.5rem 0.25rem;
  }

  .format-pills {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.35rem;
  }

  .format-pill-btn {
    padding: 0.65rem 0.25rem;
    font-size: 0.88rem;
  }

  .pill-sub {
    font-size: 0.65rem;
  }
}

/* ═══════════════════════════════════════════════
   ACCESSIBILITY: REDUCED MOTION PREFERENCE
   ═══════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .ambient-glow {
    animation: none !important;
  }
  .progress-card {
    animation: none !important;
  }
  .progress-bar-fill::after {
    animation: none !important;
  }
  .dropzone-container:hover, .primary-extract-btn:hover, .hub-card:hover, .extractor-card:hover {
    transform: none !important;
  }
}

/* ═══════════════════════════════════════════════
   ACCESSIBILITY: FOCUS-VISIBLE HIGH-CONTRAST RINGS
   ═══════════════════════════════════════════════ */
:focus-visible {
  outline: 2px solid #818cf8 !important;
  outline-offset: 3px !important;
  box-shadow: 0 0 12px rgba(129, 140, 248, 0.45) !important;
}

.dropzone-container:focus-visible {
  border-color: #818cf8 !important;
  box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.35), 0 12px 32px rgba(0, 0, 0, 0.4) !important;
}

.format-pill-btn:focus-visible,
.quality-btn:focus-visible,
.primary-extract-btn:focus-visible,
.download-btn:focus-visible,
.share-btn:focus-visible,
.reset-btn:focus-visible,
.change-file-btn:focus-visible,
.cancel-btn:focus-visible {
  outline: 2px solid #a5b4fc !important;
  outline-offset: 2px !important;
}

/* ═══════════════════════════════════════════════
   LEGAL / DOCUMENT PAGE STYLES (PRIVACY & TERMS)
   ═══════════════════════════════════════════════ */
.legal-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.legal-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.legal-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(129, 140, 248, 0.12);
  border: 1px solid rgba(129, 140, 248, 0.3);
  color: #c7d2fe;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.35rem 0.9rem;
  border-radius: 9999px;
  margin-bottom: 1.25rem;
}

.legal-header h1 {
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  background: linear-gradient(135deg, #ffffff 30%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.75rem;
}

.legal-header .legal-meta {
  color: var(--color-foreground-dim);
  font-size: 0.9rem;
}

.legal-card {
  background: var(--glass-3);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border: 1px solid var(--border-glass-default);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--elevation-2);
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.legal-callout {
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-left: 4px solid #38bdf8;
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  color: #e0f2fe;
  line-height: 1.65;
  font-size: 0.95rem;
}

.legal-callout strong {
  color: #7dd3fc;
}

.legal-section h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.legal-section h2 svg {
  color: #818cf8;
  flex-shrink: 0;
}

.legal-section p {
  color: #cbd5e1;
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 0.85rem;
}

.legal-section ul,
.legal-section ol {
  color: #cbd5e1;
  font-size: 0.95rem;
  line-height: 1.7;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-section li {
  margin-bottom: 0.5rem;
}

.legal-section li strong {
  color: #f1f5f9;
}

.legal-table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass-subtle);
}

.legal-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.legal-table th,
.legal-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.legal-table th {
  background: rgba(255, 255, 255, 0.04);
  color: #94a3b8;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}

.legal-table td {
  color: #cbd5e1;
}

/* ═══════════════════════════════════════════════
   CONTACT PAGE STYLES
   ═══════════════════════════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.contact-card {
  background: var(--glass-3);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border: 1px solid var(--border-glass-default);
  border-radius: var(--radius-lg);
  padding: 1.85rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
  box-shadow: var(--elevation-1);
}

.contact-card:hover {
  transform: translateY(-3px);
  border-color: rgba(129, 140, 248, 0.4);
  box-shadow: var(--elevation-2), 0 0 20px rgba(99, 102, 241, 0.15);
}

.contact-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(129, 140, 248, 0.12);
  border: 1px solid rgba(129, 140, 248, 0.25);
  color: #818cf8;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.contact-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: 0.5rem;
}

.contact-card p {
  color: #94a3b8;
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #818cf8;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  transition: color var(--transition-fast);
}

.contact-link:hover {
  color: #a5b4fc;
}

/* ═══════════════════════════════════════════════
   404 ERROR PAGE STYLES
   ═══════════════════════════════════════════════ */
.error-page-wrap {
  max-width: 760px;
  margin: 2rem auto;
  text-align: center;
  padding: 2rem 1.5rem 4rem;
}

.error-hero-card {
  background: var(--glass-3);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border: 1px solid var(--border-glass-default);
  border-radius: var(--radius-xl);
  padding: 3.5rem 2rem;
  box-shadow: var(--elevation-2);
  margin-bottom: 2.5rem;
}

.error-number {
  font-size: clamp(4.5rem, 12vw, 7.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.05em;
  background: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
  text-shadow: 0 0 40px rgba(129, 140, 248, 0.3);
}

.error-title {
  font-size: clamp(1.4rem, 3.5vw, 1.85rem);
  font-weight: 700;
  color: #f8fafc;
  margin-bottom: 0.75rem;
}

.error-desc {
  color: #94a3b8;
  font-size: 1rem;
  line-height: 1.65;
  max-width: 520px;
  margin: 0 auto 2rem;
}

.error-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.error-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
  transition: all var(--transition-fast);
}

.error-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.45);
}

.error-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--glass-3);
  border: 1px solid var(--border-glass-default);
  color: #e2e8f0;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.error-btn-secondary:hover {
  background: var(--glass-4);
  border-color: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

@media (max-width: 640px) {
  .legal-card {
    padding: 1.5rem 1.25rem;
  }
  .error-hero-card {
    padding: 2.5rem 1.25rem;
  }
}