@import url("sanitize.css");
@import url("enhancements.css");

:root {
  /* Typography */
  --font-family-primary: "Noto Sans JP", sans-serif;
  --font-family-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;
  --font-size-hero: clamp(3rem, 8vw, 6rem);
  --font-size-hero-sub: clamp(1.5rem, 4vw, 2.5rem);
  
  --font-weight-ultralight: 100;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;
  
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  --line-height-loose: 1.8;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 0.75rem;
  --spacing-base: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 5rem;
  
  /* Layout */
  --max-width-container: 1200px;
  --max-width-content: 800px;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-base: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.8s ease;
  --transition-material: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-index */
  --z-background: 0;
  --z-content: 1;
  --z-overlay: 10;
  --z-modal: 100;
  --z-fixed: 1000;
  
  /* Effects */
  --blur-sm: blur(4px);
  --blur-base: blur(10px);
  --blur-lg: blur(20px);
  
  /* Breakpoints (for reference in JS) */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  
  /* Colors - Warm Orange/Yellow Palette */
  --color-background: #fffef9;
  --color-background-secondary: #fff8e7;
  --color-background-overlay: rgba(255, 254, 249, 0.95);
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-surface-card: rgba(255, 251, 240, 0.8);
  --color-text-primary: #1a1613;
  --color-text-secondary: #665d4e;
  --color-text-muted: #998b73;
  --color-text-on-accent: #ffffff;
  --color-accent: #f59e0b;
  --color-accent-light: #fbbf24;
  --color-accent-dark: #d97706;
  --color-accent-gradient: linear-gradient(135deg, #f59e0b 0%, #dc2626 100%);
  --color-terminal-bg: rgba(255, 237, 213, 0.98);
  --color-terminal-text: #7c2d12;
  --color-terminal-green: #16a34a;
  --color-terminal-blue: #ea580c;
  --color-terminal-red: #dc2626;
  --color-terminal-cyan: #0891b2;
  --color-terminal-yellow: #f59e0b;
  --color-terminal-purple: #9333ea;
  --color-border: #fde7cc;
  --color-border-light: rgba(245, 158, 11, 0.08);
  --color-border-accent: rgba(245, 158, 11, 0.25);
  
  /* Shadows - Warm and Soft */
  --shadow-sm: 0 1px 2px rgba(245, 158, 11, 0.06);
  --shadow-base: 0 2px 8px rgba(245, 158, 11, 0.08);
  --shadow-md: 0 4px 16px rgba(245, 158, 11, 0.1);
  --shadow-lg: 0 8px 24px rgba(245, 158, 11, 0.12);
  --shadow-xl: 0 16px 48px rgba(245, 158, 11, 0.15);
  --shadow-glow: 0 0 24px rgba(245, 158, 11, 0.25);
  --shadow-text: 0 0 16px rgba(245, 158, 11, 0.3);
}

/* Base Styles */
* {
  font-family: var(--font-family-primary);
  font-optical-sizing: auto;
  font-weight: var(--font-weight-ultralight);
  font-style: normal;
  user-select: none;
}

a {
  text-decoration: none;
  color: inherit;
}

p {
  margin: 0;
  line-height: var(--line-height-relaxed);
}

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

/* Utility Classes */
.container {
  max-width: var(--max-width-container);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.content {
  max-width: var(--max-width-content);
  margin: 0 auto;
}

/* Responsive Utilities */
@media (max-width: 768px) {
  :root {
    --font-size-3xl: 2rem;
    --font-size-4xl: 2rem;
    --font-size-5xl: 2.5rem;
    --spacing-4xl: 3rem;
  }
  
  .container {
    padding: 0 var(--spacing-base);
  }
}

/* Animation Classes */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

@keyframes glow {
  0%, 100% {
    opacity: 0.8;
  }
  50% {
    opacity: 1;
  }
}

@keyframes twinkle {
  0% {
    opacity: 0;
    transform: translateY(0);
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateY(-100vh);
  }
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* Scrollbar Styles */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-background-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-light);
}