/* ======================================
   WildyRiftian Portfolio Clone
   Design Tokens & Core Styles
   ====================================== */

/* ===== Custom Properties (Design Tokens) ===== */
:root {
  /* Colors - Dark Mode Palette */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #111111;
  --color-bg-tertiary: #1a1a1a;
  --color-bg-card: #141414;
  
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #666666;
  
  --color-accent: #f0f0f0;
  --color-accent-hover: #ffffff;
  
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-hover: rgba(255, 255, 255, 0.2);
  
  /* Typography */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-script: 'Caveat', cursive;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Font Sizes - Fluid Typography */
  --text-hero: clamp(3rem, 8vw, 7.5rem);
  --text-h1: clamp(2rem, 4vw, 4.5rem);
  --text-h2: clamp(1.5rem, 2.5vw, 3rem);
  --text-h3: clamp(1.25rem, 2vw, 2rem);
  --text-body: clamp(0.875rem, 1vw, 1rem);
  --text-caption: 0.75rem;
  --text-small: 0.625rem;
  
  /* Font Weights */
  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  
  /* Letter Spacing */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;
  --tracking-wider: 0.1em;
  --tracking-widest: 0.2em;
  
  /* Line Heights */
  --leading-tight: 1.1;
  --leading-snug: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;
  
  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-Index Scale */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-cursor: 500;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

/* ===== Reset & Base Styles ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Selection */
::selection {
  background-color: var(--color-text-primary);
  color: var(--color-bg-primary);
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-base);
}

a:hover {
  color: var(--color-accent-hover);
}

/* Images */
img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Lists */
ul, ol {
  list-style: none;
}

/* Buttons */
button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: transparent;
  border: none;
  cursor: pointer;
  outline: none;
}

/* ===== Typography Utilities ===== */
.text-hero {
  font-family: var(--font-serif);
  font-size: var(--text-hero);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  text-transform: uppercase;
}

.text-h1 {
  font-family: var(--font-serif);
  font-size: var(--text-h1);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.text-h2 {
  font-family: var(--font-serif);
  font-size: var(--text-h2);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
}

.text-h3 {
  font-family: var(--font-sans);
  font-size: var(--text-h3);
  font-weight: var(--weight-medium);
  line-height: var(--leading-snug);
}

.text-mono {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.text-script {
  font-family: var(--font-script);
  font-size: var(--text-h3);
  font-weight: var(--weight-regular);
}

.text-label {
  font-family: var(--font-mono);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ===== Layout Utilities ===== */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-24) 0;
}

.section-lg {
  padding: var(--space-32) 0;
}

/* Flexbox */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

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

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Grid */
.grid {
  display: grid;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-6 {
  grid-template-columns: repeat(6, 1fr);
}

/* ===== Visibility ===== */
.hidden {
  display: none !important;
}

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

/* ===== Cursor (hidden by default, activated by JS) ===== */
.cursor {
  position: fixed;
  width: 20px;
  height: 20px;
  border: 1px solid var(--color-text-primary);
  border-radius: 50%;
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
  transition: width 0.2s ease, height 0.2s ease, background 0.2s ease;
  mix-blend-mode: difference;
}

.cursor.cursor-grow {
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.1);
}

.cursor-dot {
  position: fixed;
  width: 6px;
  height: 6px;
  background: var(--color-text-primary);
  border-radius: 50%;
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
}

/* Hide default cursor on desktop */
@media (hover: hover) and (pointer: fine) {
  body.custom-cursor {
    cursor: none;
  }
  
  body.custom-cursor a,
  body.custom-cursor button {
    cursor: none;
  }
}

/* ===== Page Transitions ===== */
.page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-bg-primary);
  z-index: var(--z-modal);
  pointer-events: none;
  transform: translateY(100%);
}

/* ===== Scroll Progress Bar ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--color-text-primary);
  z-index: var(--z-sticky);
  transition: width 0.05s linear;
}