/* ========================================
   YComplex — Shared Design System
   ======================================== */

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

:root {
  --bg: #050508;
  --bg-card: #0c0c10;
  --bg-card-hover: #111116;
  --border: rgba(201, 168, 76, 0.08);
  --border-hover: rgba(201, 168, 76, 0.25);
  --text: #e4e0d8;
  --text-dim: #7a7770;
  --text-dimmer: #4a4843;
  --accent: #c9a84c;
  --accent-dim: rgba(201, 168, 76, 0.12);
  --accent-glow: rgba(201, 168, 76, 0.06);
  --mesh-stroke: rgba(201, 168, 76, 0.06);
  --mesh-node: rgba(201, 168, 76, 0.15);
  --font-display: 'Syne', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

html { height: 100%; }

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* ---- Canvas mesh ---- */
#mesh {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* ---- Grain overlay ---- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-size: 180px;
}

/* ---- Corner accents ---- */
.corner {
  position: fixed;
  width: 60px;
  height: 60px;
  z-index: 2;
  opacity: 0;
  animation: fadeIn 1.5s ease 2.2s forwards;
}
.corner::before, .corner::after {
  content: '';
  position: absolute;
  background: var(--accent);
  opacity: 0.2;
}
.corner-tl { top: 2rem; left: 2rem; }
.corner-tl::before { top: 0; left: 0; width: 24px; height: 1px; }
.corner-tl::after { top: 0; left: 0; width: 1px; height: 24px; }
.corner-br { bottom: 2rem; right: 2rem; }
.corner-br::before { bottom: 0; right: 0; width: 24px; height: 1px; }
.corner-br::after { bottom: 0; right: 0; width: 1px; height: 24px; }

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2.5rem;
  opacity: 0;
  animation: fadeIn 1s var(--ease-out) 0.3s forwards;
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-brand .y { color: var(--accent); }

.nav-brand:hover { color: var(--accent); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.3s ease;
  position: relative;
  padding-bottom: 2px;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s var(--ease-out);
}

.nav-link:hover { color: var(--text); }
.nav-link:hover::after { transform: scaleX(1); transform-origin: left; }

/* ---- Shared link style ---- */
.link-accent {
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 0.4s ease, letter-spacing 0.4s ease;
  position: relative;
  padding-bottom: 4px;
}

.link-accent::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s var(--ease-out);
}

.link-accent:hover { color: var(--text); }
.link-accent:hover::after { transform: scaleX(1); transform-origin: left; }

/* ---- Badge ---- */
.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--border-hover);
  padding: 0.3em 0.8em;
  border-radius: 2px;
}

/* ---- Animations ---- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

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

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

@keyframes scaleX {
  from { opacity: 0; transform: scaleX(0); }
  to { opacity: 1; transform: scaleX(1); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .corner-tl { top: 1rem; left: 1rem; }
  .corner-br { bottom: 1rem; right: 1rem; }
  .nav { padding: 1rem 1.2rem; }
}