/* ============================================
   YuViCode — shared design system foundation
   Tokens, base, nav, buttons, footer, legal,
   loading screen, cookie banner.
   ============================================ */

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

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

:root {
  /* Neutrals (dark-first) */
  --ink-0: #05060a;
  --ink-1: #0a0b12;
  --ink-2: #11131c;
  --ink-3: #181a26;
  --ink-4: #222534;
  --ink-5: #2d3145;
  --ink-7: #8b91ad;
  --ink-8: #b8bdd4;
  --ink-9: #e8eaf4;

  /* Arcade neons */
  --neon-cyan: #00ffd1;
  --neon-cyan-2: #7effe3;
  --neon-magenta: #ff2bd6;
  --neon-lime: #b8ff2b;
  --neon-amber: #ffb83d;

  /* Mystical (used where we want the oracle mood) */
  --myst-gold: #d4a574;
  --myst-violet: #c4a7ff;
  --myst-violet-2: #8b6fd4;

  /* Semantic */
  --bg: var(--ink-1);
  --bg2: var(--ink-2);
  --bg3: var(--ink-3);
  --border: var(--ink-4);
  --divider: var(--ink-5);
  --text: var(--ink-9);
  --muted: var(--ink-7);
  --text-muted: var(--ink-8);
  --accent: var(--neon-cyan);
  --accent-alt: var(--neon-magenta);
  --accent-3: var(--neon-lime);

  /* Legacy aliases so older class rules keep working */
  --violet: var(--myst-violet-2);
  --violet2: var(--neon-magenta);
  --cyan: var(--neon-cyan);
  --cyan2: var(--neon-cyan-2);

  /* Type */
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

  /* Grid */
  --grid-line: rgba(0, 255, 209, 0.035);
  --grid-size: 32px;

  /* Motion */
  --ease-snap: cubic-bezier(0.2, 0.8, 0.2, 1);
}

html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
}
::selection { background: var(--accent); color: var(--ink-0); }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 11, 18, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--divider);
  padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px; flex-wrap: wrap; gap: .5rem;
}
.logo {
  font-family: var(--font-mono); font-weight: 600;
  font-size: 1.1rem; letter-spacing: -0.02em;
  color: var(--text);
  display: inline-flex; align-items: center; gap: .5rem;
  text-decoration: none;
}
.logo span { color: var(--accent); }
.logo-icon { width: 26px; height: 26px; }
nav ul { list-style: none; display: flex; gap: 1.75rem; flex-wrap: wrap; }
nav ul a {
  font-family: var(--font-mono);
  font-size: .72rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted);
  transition: color .15s var(--ease-snap);
}
nav ul a:hover { color: var(--accent); }
nav .back {
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: .72rem; letter-spacing: 0.1em; text-transform: uppercase;
  transition: color .15s var(--ease-snap);
}
nav .back:hover { color: var(--accent); }

/* Eyebrow / section labels */
.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: .72rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

/* Headings default */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  font-family: var(--font-mono); font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  font-size: .75rem;
  border-radius: 4px;
  padding: 0 1.5rem; height: 46px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: all .15s var(--ease-snap);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent); color: var(--ink-0);
  box-shadow: 0 0 0 1px rgba(0,255,209,0.4), 0 0 22px rgba(0,255,209,0.32), inset 0 1px 0 rgba(255,255,255,0.3);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(0,255,209,0.6), 0 0 34px rgba(0,255,209,0.55), inset 0 1px 0 rgba(255,255,255,0.4);
}
.btn-primary:active { transform: translateY(0); filter: brightness(0.92); }
.btn-outline, .btn-secondary {
  background: rgba(255,43,214,0.04);
  border-color: rgba(255,43,214,0.35);
  color: var(--accent-alt);
}
.btn-outline:hover, .btn-secondary:hover {
  background: rgba(255,43,214,0.12);
  border-color: var(--accent-alt);
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(255,43,214,0.4), 0 0 22px rgba(255,43,214,0.3);
}

/* FOOTER */
footer {
  background: var(--bg);
  border-top: 1px solid var(--divider);
  padding: 3rem 2rem; text-align: center;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: .7rem; letter-spacing: 0.1em; text-transform: uppercase;
}
footer a {
  font-family: var(--font-mono);
  color: var(--accent); text-decoration: none;
  transition: color .15s var(--ease-snap);
}
footer a:hover { color: var(--accent-alt); text-decoration: underline; }
.footer-logo {
  font-family: var(--font-mono); font-weight: 600;
  font-size: 1.1rem; letter-spacing: -0.02em;
  color: var(--text); margin-bottom: .75rem;
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
}
.footer-logo span { color: var(--accent); }
.footer-links { display: flex; gap: 1.5rem; justify-content: center; margin: 1rem 0; flex-wrap: wrap; }
.footer-links a {
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: .7rem; letter-spacing: 0.1em; text-transform: uppercase;
  transition: color .15s var(--ease-snap);
}
.footer-links a:hover { color: var(--accent); }

/* COOKIE BANNER */
.cookie-banner {
  display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 500;
  background: var(--bg3); border-top: 1px solid var(--divider);
  padding: 1rem 2rem; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
}
.cookie-banner.active { display: flex; }
.cookie-banner p {
  font-family: var(--font-sans); font-weight: 300;
  font-size: .85rem; color: var(--text-muted); flex: 1; min-width: 200px;
}
.cookie-banner p a { color: var(--accent); text-decoration: none; }
.cookie-banner p a:hover { text-decoration: underline; }
.cookie-btns { display: flex; gap: .5rem; flex-shrink: 0; }
.cookie-btn {
  font-family: var(--font-mono); font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  font-size: .68rem;
  padding: .55rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all .15s var(--ease-snap);
}
.cookie-btn.accept {
  background: var(--accent); color: var(--ink-0);
  box-shadow: 0 0 0 1px rgba(0,255,209,0.3), 0 0 16px rgba(0,255,209,0.25);
}
.cookie-btn.accept:hover {
  box-shadow: 0 0 0 1px rgba(0,255,209,0.5), 0 0 24px rgba(0,255,209,0.4);
}
.cookie-btn.decline {
  background: transparent; border-color: var(--border); color: var(--muted);
}
.cookie-btn.decline:hover { border-color: var(--accent); color: var(--accent); }

/* SKIP TO CONTENT (keyboard accessibility) */
.skip-link {
  position: absolute; top: -100px; left: 0;
  background: var(--accent); color: var(--ink-0);
  font-family: var(--font-mono); font-weight: 600;
  font-size: .8rem; letter-spacing: 0.08em; text-transform: uppercase;
  padding: .75rem 1rem;
  z-index: 10001;
  text-decoration: none;
  transition: top .15s var(--ease-snap);
}
.skip-link:focus {
  top: 0;
  outline: 2px solid var(--ink-0);
  outline-offset: -4px;
}

/* RESPECT REDUCED MOTION */
@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;
  }
}