/* ═══════════════════════════════════════════════
   PixelForge Design Tokens v1.0
   "Liquid Glass & Electric Precision"
   ═══════════════════════════════════════════════ */

:root {
  /* ── Color System ── */
  --color-void:        #0a0a0f;
  --color-void-light:  #12121a;
  --color-void-lighter:#1a1a25;
  --color-surface:     #16161f;
  --color-surface-alt: #1e1e2a;
  --color-border:      rgba(255,255,255,0.06);
  --color-border-glow: rgba(59,130,246,0.15);

  --color-text-primary:   #f1f1f6;
  --color-text-secondary: #9494a8;
  --color-text-muted:     #5e5e76;

  --color-accent-blue:    #3b82f6;
  --color-accent-violet:  #8b5cf6;
  --color-accent-cyan:    #06b6d4;
  --color-accent-amber:   #f59e0b;
  --color-accent-rose:    #f43f5e;

  --gradient-primary:   linear-gradient(135deg, #3b82f6, #8b5cf6);
  --gradient-secondary: linear-gradient(135deg, #06b6d4, #3b82f6);
  --gradient-cta:       linear-gradient(135deg, #f59e0b, #f97316);
  --gradient-glow:      radial-gradient(circle at center, rgba(59,130,246,0.3) 0%, transparent 70%);
  --gradient-hero:      linear-gradient(180deg, rgba(10,10,15,0) 0%, #0a0a0f 100%);

  /* ── Typography ── */
  --font-sans:    'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  --font-display: 'Inter', system-ui, -apple-system, sans-serif;

  --text-xs:   0.75rem;   /* 12px */
  --text-sm:   0.875rem;  /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg:   1.125rem;  /* 18px */
  --text-xl:   1.25rem;   /* 20px */
  --text-2xl:  1.5rem;    /* 24px */
  --text-3xl:  1.875rem;  /* 30px */
  --text-4xl:  2.25rem;   /* 36px */
  --text-5xl:  3rem;      /* 48px */
  --text-6xl:  3.75rem;   /* 60px */
  --text-7xl:  4.5rem;    /* 72px */

  --leading-tight:  1.1;
  --leading-snug:   1.3;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  --tracking-tight:  -0.025em;
  --tracking-normal: 0;
  --tracking-wide:   0.05em;
  --tracking-wider:  0.1em;

  /* ── Spacing ── */
  --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;
  --space-40: 10rem;

  --section-padding: clamp(4rem, 10vw, 10rem);
  --content-max: 1280px;
  --content-narrow: 900px;

  /* ── Border Radius ── */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-2xl:  32px;
  --radius-full: 9999px;

  /* ── Shadows & Glow ── */
  --shadow-sm:   0 1px 2px rgba(0,0,0,0.5);
  --shadow-md:   0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.5);
  --shadow-xl:   0 16px 64px rgba(0,0,0,0.6);

  --glow-blue:   0 0 20px rgba(59,130,246,0.3), 0 0 60px rgba(59,130,246,0.1);
  --glow-violet: 0 0 20px rgba(139,92,246,0.3), 0 0 60px rgba(139,92,246,0.1);
  --glow-amber:  0 0 20px rgba(245,158,11,0.3), 0 0 60px rgba(245,158,11,0.1);
  --glow-cyan:   0 0 20px rgba(6,182,212,0.3), 0 0 60px rgba(6,182,212,0.1);

  /* ── Glass ── */
  --glass-bg:       rgba(255,255,255,0.03);
  --glass-bg-hover: rgba(255,255,255,0.06);
  --glass-border:   rgba(255,255,255,0.08);
  --glass-blur:     20px;

  /* ── Transitions ── */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out:   cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring:   cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast:   150ms;
  --duration-normal: 300ms;
  --duration-slow:   600ms;
  --duration-glacial: 1000ms;

  /* ── Z-Index ── */
  --z-base:     0;
  --z-raised:   10;
  --z-sticky:   100;
  --z-overlay:  200;
  --z-modal:    300;
  --z-toast:    400;
}

/* ── Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background: var(--color-void);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

/* ── Utility Classes ── */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-narrow {
  max-width: var(--content-narrow);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--section-padding) 0;
  position: relative;
}

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

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}
.reveal-up   { transform: translateY(40px); }
.reveal-down { transform: translateY(-40px); }
.reveal-left { transform: translateX(-40px); }
.reveal-right{ transform: translateX(40px); }
.reveal-scale { transform: scale(0.9); }
.reveal-scale.revealed { transform: scale(1); }