src/app/globals.css

@import "tailwindcss";

/* ============================================
   LIQUID GLASS DESIGN SYSTEM
   Inspired by Apple's WWDC 2025 Liquid Glass
   ============================================ */

:root {
  /* ---- Base Colors ---- */
  --background: #f5f5f7;
  --foreground: #1d1d1f;

  /* ---- Glass Material Properties ---- */
  --glass-blur: 24px;
  --glass-saturation: 180%;
  --glass-brightness: 105%;

  /* Glass Backgrounds */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-elevated: rgba(255, 255, 255, 0.85);
  --glass-bg-muted: rgba(255, 255, 255, 0.45);
  --glass-bg-strong: rgba(255, 255, 255, 0.92);

  /* Glass Borders */
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-border-subtle: rgba(255, 255, 255, 0.3);
  --glass-border-strong: rgba(255, 255, 255, 0.7);

  /* Specular Highlights */
  --specular-light: rgba(255, 255, 255, 0.8);
  --specular-medium: rgba(255, 255, 255, 0.5);
  --specular-subtle: rgba(255, 255, 255, 0.25);

  /* Inner Shadows for Depth */
  --inner-shadow-light: inset 0 1px 1px rgba(255, 255, 255, 0.6);
  --inner-shadow-dark: inset 0 -1px 1px rgba(0, 0, 0, 0.05);

  /* ---- Severity Colors ---- */
  /* Critical (Red) */
  --critical-bg: rgba(255, 59, 48, 0.12);
  --critical-bg-glass: rgba(255, 59, 48, 0.08);
  --critical-border: rgba(255, 59, 48, 0.3);
  --critical-text: #c41e3a;
  --critical-accent: #ff3b30;
  --critical-glow: rgba(255, 59, 48, 0.4);

  /* Warning (Amber) */
  --warning-bg: rgba(255, 159, 10, 0.12);
  --warning-bg-glass: rgba(255, 159, 10, 0.08);
  --warning-border: rgba(255, 159, 10, 0.3);
  --warning-text: #996300;
  --warning-accent: #ff9f0a;
  --warning-glow: rgba(255, 159, 10, 0.4);

  /* Suggestion (Blue) */
  --suggestion-bg: rgba(0, 122, 255, 0.12);
  --suggestion-bg-glass: rgba(0, 122, 255, 0.08);
  --suggestion-border: rgba(0, 122, 255, 0.3);
  --suggestion-text: #0066cc;
  --suggestion-accent: #007aff;
  --suggestion-glow: rgba(0, 122, 255, 0.4);

  /* Success (Green) */
  --success-bg: rgba(52, 199, 89, 0.12);
  --success-bg-glass: rgba(52, 199, 89, 0.08);
  --success-border: rgba(52, 199, 89, 0.3);
  --success-text: #248a3d;
  --success-accent: #34c759;
  --success-glow: rgba(52, 199, 89, 0.4);

  /* ---- Surface Colors ---- */
  --surface-base: linear-gradient(135deg, #f5f5f7 0%, #e8e8ed 50%, #f0f0f5 100%);
  --surface-elevated: rgba(255, 255, 255, 0.9);
  --surface-canvas: rgba(255, 255, 255, 0.6);

  /* Ambient Orbs for Background */
  --ambient-blue: rgba(59, 130, 246, 0.15);
  --ambient-purple: rgba(139, 92, 246, 0.12);
  --ambient-pink: rgba(236, 72, 153, 0.1);
  --ambient-cyan: rgba(34, 211, 238, 0.1);

  /* ---- Typography ---- */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", ui-monospace, Menlo, Monaco, "Cascadia Mono", "Consolas", monospace;

  /* ---- Shadows ---- */
  --shadow-glass-sm: 0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-glass-md: 0 4px 16px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-glass-lg: 0 8px 32px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
  --shadow-glass-xl: 0 16px 48px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.06);

  /* ---- Motion ---- */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --duration-slower: 600ms;

  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);

  /* Spring Presets */
  --spring-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --spring-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* ---- Radius ---- */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-3xl: 32px;
  --radius-full: 9999px;

  /* ---- Spacing ---- */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;
  --spacing-3xl: 48px;
}

/* ---- Dark Mode ---- */
/* Manual dark mode override */
.dark {
    --background: #0a0a0c;
    --foreground: #f5f5f7;

    /* Glass Backgrounds - Dark */
    --glass-bg: rgba(30, 30, 35, 0.75);
    --glass-bg-elevated: rgba(45, 45, 50, 0.85);
    --glass-bg-muted: rgba(25, 25, 30, 0.6);
    --glass-bg-strong: rgba(40, 40, 45, 0.92);

    /* Glass Borders - Dark */
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-border-subtle: rgba(255, 255, 255, 0.08);
    --glass-border-strong: rgba(255, 255, 255, 0.18);

    /* Specular Highlights - Dark (subtle luminosity) */
    --specular-light: rgba(255, 255, 255, 0.15);
    --specular-medium: rgba(255, 255, 255, 0.1);
    --specular-subtle: rgba(255, 255, 255, 0.05);

    /* Inner Shadows - Dark */
    --inner-shadow-light: inset 0 1px 1px rgba(255, 255, 255, 0.08);
    --inner-shadow-dark: inset 0 -1px 1px rgba(0, 0, 0, 0.2);

    /* Severity Colors - Dark Mode */
    --critical-bg: rgba(255, 69, 58, 0.15);
    --critical-bg-glass: rgba(255, 69, 58, 0.1);
    --critical-border: rgba(255, 69, 58, 0.35);
    --critical-text: #ff6961;
    --critical-accent: #ff453a;

    --warning-bg: rgba(255, 159, 10, 0.15);
    --warning-bg-glass: rgba(255, 159, 10, 0.1);
    --warning-border: rgba(255, 159, 10, 0.35);
    --warning-text: #ffc04d;
    --warning-accent: #ff9f0a;

    --suggestion-bg: rgba(10, 132, 255, 0.15);
    --suggestion-bg-glass: rgba(10, 132, 255, 0.1);
    --suggestion-border: rgba(10, 132, 255, 0.35);
    --suggestion-text: #64b5f6;
    --suggestion-accent: #0a84ff;

    --success-bg: rgba(48, 209, 88, 0.15);
    --success-bg-glass: rgba(48, 209, 88, 0.1);
    --success-border: rgba(48, 209, 88, 0.35);
    --success-text: #6ee7a0;
    --success-accent: #30d158;

    /* Surface Colors - Dark */
    --surface-base: linear-gradient(135deg, #0a0a0c 0%, #121216 50%, #0e0e12 100%);
    --surface-elevated: rgba(35, 35, 40, 0.9);
    --surface-canvas: rgba(20, 20, 25, 0.6);

    /* Ambient Orbs - Dark */
    --ambient-blue: rgba(59, 130, 246, 0.1);
    --ambient-purple: rgba(139, 92, 246, 0.08);
    --ambient-pink: rgba(236, 72, 153, 0.06);
    --ambient-cyan: rgba(34, 211, 238, 0.06);

    /* Shadows - Dark */
    --shadow-glass-sm: 0 2px 8px rgba(0, 0, 0, 0.2), 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-glass-md: 0 4px 16px rgba(0, 0, 0, 0.25), 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-glass-lg: 0 8px 32px rgba(0, 0, 0, 0.3), 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-glass-xl: 0 16px 48px rgba(0, 0, 0, 0.4), 0 8px 16px rgba(0, 0, 0, 0.25);
}

/* Manual light mode override */
.light {
  --background: #f5f5f7;
  --foreground: #1d1d1f;

  /* Glass Backgrounds */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-elevated: rgba(255, 255, 255, 0.85);
  --glass-bg-muted: rgba(255, 255, 255, 0.45);
  --glass-bg-strong: rgba(255, 255, 255, 0.92);

  /* Glass Borders */
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-border-subtle: rgba(255, 255, 255, 0.3);
  --glass-border-strong: rgba(255, 255, 255, 0.7);

  /* Specular Highlights */
  --specular-light: rgba(255, 255, 255, 0.8);
  --specular-medium: rgba(255, 255, 255, 0.5);
  --specular-subtle: rgba(255, 255, 255, 0.25);

  /* Inner Shadows for Depth */
  --inner-shadow-light: inset 0 1px 1px rgba(255, 255, 255, 0.6);
  --inner-shadow-dark: inset 0 -1px 1px rgba(0, 0, 0, 0.05);

  /* Severity Colors */
  --critical-bg: rgba(255, 59, 48, 0.12);
  --critical-bg-glass: rgba(255, 59, 48, 0.08);
  --critical-border: rgba(255, 59, 48, 0.3);
  --critical-text: #c41e3a;
  --critical-accent: #ff3b30;
  --critical-glow: rgba(255, 59, 48, 0.4);

  --warning-bg: rgba(255, 159, 10, 0.12);
  --warning-bg-glass: rgba(255, 159, 10, 0.08);
  --warning-border: rgba(255, 159, 10, 0.3);
  --warning-text: #996300;
  --warning-accent: #ff9f0a;
  --warning-glow: rgba(255, 159, 10, 0.4);

  --suggestion-bg: rgba(0, 122, 255, 0.12);
  --suggestion-bg-glass: rgba(0, 122, 255, 0.08);
  --suggestion-border: rgba(0, 122, 255, 0.3);
  --suggestion-text: #0066cc;
  --suggestion-accent: #007aff;
  --suggestion-glow: rgba(0, 122, 255, 0.4);

  --success-bg: rgba(52, 199, 89, 0.12);
  --success-bg-glass: rgba(52, 199, 89, 0.08);
  --success-border: rgba(52, 199, 89, 0.3);
  --success-text: #248a3d;
  --success-accent: #34c759;
  --success-glow: rgba(52, 199, 89, 0.4);

  /* Surface Colors */
  --surface-base: linear-gradient(135deg, #f5f5f7 0%, #e8e8ed 50%, #f0f0f5 100%);
  --surface-elevated: rgba(255, 255, 255, 0.9);
  --surface-canvas: rgba(255, 255, 255, 0.6);

  /* Ambient Orbs for Background */
  --ambient-blue: rgba(59, 130, 246, 0.15);
  --ambient-purple: rgba(139, 92, 246, 0.12);
  --ambient-pink: rgba(236, 72, 153, 0.1);
  --ambient-cyan: rgba(34, 211, 238, 0.1);

  /* Shadows */
  --shadow-glass-sm: 0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-glass-md: 0 4px 16px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-glass-lg: 0 8px 32px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
  --shadow-glass-xl: 0 16px 48px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.06);
}

/* System preference (when no manual override) */
@media (prefers-color-scheme: dark) {
  :root:not(.light):not(.dark) {
    --background: #0a0a0c;
    --foreground: #f5f5f7;

    /* Glass Backgrounds - Dark */
    --glass-bg: rgba(30, 30, 35, 0.75);
    --glass-bg-elevated: rgba(45, 45, 50, 0.85);
    --glass-bg-muted: rgba(25, 25, 30, 0.6);
    --glass-bg-strong: rgba(40, 40, 45, 0.92);

    /* Glass Borders - Dark */
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-border-subtle: rgba(255, 255, 255, 0.08);
    --glass-border-strong: rgba(255, 255, 255, 0.18);

    /* Specular Highlights - Dark (subtle luminosity) */
    --specular-light: rgba(255, 255, 255, 0.15);
    --specular-medium: rgba(255, 255, 255, 0.1);
    --specular-subtle: rgba(255, 255, 255, 0.05);

    /* Inner Shadows - Dark */
    --inner-shadow-light: inset 0 1px 1px rgba(255, 255, 255, 0.08);
    --inner-shadow-dark: inset 0 -1px 1px rgba(0, 0, 0, 0.2);

    /* Severity Colors - Dark Mode */
    --critical-bg: rgba(255, 69, 58, 0.15);
    --critical-bg-glass: rgba(255, 69, 58, 0.1);
    --critical-border: rgba(255, 69, 58, 0.35);
    --critical-text: #ff6961;
    --critical-accent: #ff453a;

    --warning-bg: rgba(255, 159, 10, 0.15);
    --warning-bg-glass: rgba(255, 159, 10, 0.1);
    --warning-border: rgba(255, 159, 10, 0.35);
    --warning-text: #ffc04d;
    --warning-accent: #ff9f0a;

    --suggestion-bg: rgba(10, 132, 255, 0.15);
    --suggestion-bg-glass: rgba(10, 132, 255, 0.1);
    --suggestion-border: rgba(10, 132, 255, 0.35);
    --suggestion-text: #64b5f6;
    --suggestion-accent: #0a84ff;

    --success-bg: rgba(48, 209, 88, 0.15);
    --success-bg-glass: rgba(48, 209, 88, 0.1);
    --success-border: rgba(48, 209, 88, 0.35);
    --success-text: #6ee7a0;
    --success-accent: #30d158;

    /* Surface Colors - Dark */
    --surface-base: linear-gradient(135deg, #0a0a0c 0%, #121216 50%, #0e0e12 100%);
    --surface-elevated: rgba(35, 35, 40, 0.9);
    --surface-canvas: rgba(20, 20, 25, 0.6);

    /* Ambient Orbs - Dark */
    --ambient-blue: rgba(59, 130, 246, 0.1);
    --ambient-purple: rgba(139, 92, 246, 0.08);
    --ambient-pink: rgba(236, 72, 153, 0.06);
    --ambient-cyan: rgba(34, 211, 238, 0.06);

    /* Shadows - Dark */
    --shadow-glass-sm: 0 2px 8px rgba(0, 0, 0, 0.2), 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-glass-md: 0 4px 16px rgba(0, 0, 0, 0.25), 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-glass-lg: 0 8px 32px rgba(0, 0, 0, 0.3), 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-glass-xl: 0 16px 48px rgba(0, 0, 0, 0.4), 0 8px 16px rgba(0, 0, 0, 0.25);
  }
}

/* Smooth transitions */
* {
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

/* ---- Tailwind Theme Extension ---- */
@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --font-sans: var(--font-sans);
  --font-mono: var(--font-mono);

  /* Glass Colors */
  --color-glass-bg: var(--glass-bg);
  --color-glass-border: var(--glass-border);

  /* Severity Colors */
  --color-critical: var(--critical-accent);
  --color-warning: var(--warning-accent);
  --color-suggestion: var(--suggestion-accent);
  --color-success: var(--success-accent);
}

/* ============================================
   BASE STYLES
   ============================================ */

html {
  scroll-behavior: smooth;
}

body {
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

/* Base Glass Effect */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturation)) brightness(var(--glass-brightness));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturation)) brightness(var(--glass-brightness));
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-glass-md), var(--inner-shadow-light), var(--inner-shadow-dark);
}

/* Elevated Glass (stronger effect) */
.glass-elevated {
  background: var(--glass-bg-elevated);
  backdrop-filter: blur(32px) saturate(200%) brightness(108%);
  -webkit-backdrop-filter: blur(32px) saturate(200%) brightness(108%);
  border: 1px solid var(--glass-border-strong);
  box-shadow: var(--shadow-glass-lg), var(--inner-shadow-light), var(--inner-shadow-dark);
}

/* Muted Glass (subtle effect) */
.glass-muted {
  background: var(--glass-bg-muted);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--glass-border-subtle);
  box-shadow: var(--shadow-glass-sm);
}

/* Specular Highlight Overlay */
.glass-specular {
  position: relative;
}

.glass-specular::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    var(--specular-light) 0%,
    var(--specular-medium) 10%,
    transparent 40%
  );
  border-radius: inherit;
  pointer-events: none;
}

/* Severity-Tinted Glass */
.glass-critical {
  background: var(--critical-bg-glass);
  border-color: var(--critical-border);
}

.glass-warning {
  background: var(--warning-bg-glass);
  border-color: var(--warning-border);
}

.glass-suggestion {
  background: var(--suggestion-bg-glass);
  border-color: var(--suggestion-border);
}

.glass-success {
  background: var(--success-bg-glass);
  border-color: var(--success-border);
}

/* ============================================
   ANIMATION UTILITIES
   ============================================ */

/* Shimmer Loading Effect */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.shimmer {
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--specular-subtle) 50%,
    transparent 100%
  );
  background-size: 200% 100%;
  animation: shimmer 2s ease-in-out infinite;
}

/* Pulse Glow Effect */
@keyframes pulse-glow {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 0 0 var(--success-glow);
  }
  50% {
    opacity: 0.8;
    box-shadow: 0 0 16px 4px var(--success-glow);
  }
}

.pulse-glow-success {
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow-critical {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 0 0 var(--critical-glow);
  }
  50% {
    opacity: 0.9;
    box-shadow: 0 0 12px 3px var(--critical-glow);
  }
}

.pulse-glow-critical {
  animation: pulse-glow-critical 2s ease-in-out infinite;
}

@keyframes pulse-glow-warning {
  0%, 100% {
    box-shadow: 0 0 0 0 var(--warning-glow);
  }
  50% {
    box-shadow: 0 0 10px 2px var(--warning-glow);
  }
}

.pulse-glow-warning {
  animation: pulse-glow-warning 2.5s ease-in-out infinite;
}

/* Gradient Flow Animation */
@keyframes gradient-flow {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.gradient-animate {
  background-size: 200% 200%;
  animation: gradient-flow 8s ease infinite;
}

/* Float Animation for Ambient Orbs */
@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  33% {
    transform: translateY(-15px) rotate(1deg);
  }
  66% {
    transform: translateY(10px) rotate(-1deg);
  }
}

.float-slow {
  animation: float 20s ease-in-out infinite;
}

.float-medium {
  animation: float 15s ease-in-out infinite;
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .shimmer,
  .pulse-glow-success,
  .pulse-glow-critical,
  .pulse-glow-warning,
  .gradient-animate,
  .float-slow,
  .float-medium {
    animation: none !important;
  }
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--glass-border-strong);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--glass-border) transparent;
}

/* ============================================
   FOCUS STYLES
   ============================================ */

.focus-ring {
  outline: none;
}

.focus-ring:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 2px var(--background),
    0 0 0 4px var(--suggestion-accent),
    var(--shadow-glass-md);
}

/* ============================================
   SELECTION STYLES
   ============================================ */

::selection {
  background: var(--suggestion-bg);
  color: var(--suggestion-text);
}