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

/* VARIABLES */
:root {
  --bg: #0a0a0f;
  --bg2: #111118;
  --bg3: #1a1a24;
  --accent: #00e5ff;
  --accent2: #7c3aed;
  --text: #e8e8f0;
  --muted: #7070a0;
  --border: rgba(255,255,255,0.07);
  --mono: 'Space Mono', monospace;
  --sans: 'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  overflow-x: hidden;
}

/* NOISE OVERLAY */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 4rem;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-logo { font-family: var(--mono); font-size: 0.9rem; color: var(--accent); letter-spacing: 0.1em; text-decoration: none; }
.nav-logo span { color: var(--muted); }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a {
  font-family: var(--mono); font-size: 0.78rem; color: var(--muted);
  text-decoration: none; letter-spacing: 0.08em; text-transform: uppercase;
  transition: color 0.2s; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 1px; background: var(--accent); transition: width 0.3s;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--accent); }

/* HAMBURGER */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--text); transition: all 0.3s; }

/* PAGE HEADER */
.page-header {
  padding: 8rem 4rem 3rem;
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.page-header-content { position: relative; z-index: 1; max-width: 700px; }
.page-tag {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--mono); font-size: 0.72rem;
  letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 1rem;
}
.page-tag::before { content: ''; display: block; width: 28px; height: 1px; }
.page-header h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; margin-bottom: 1rem; }
.page-header p { font-size: 1rem; color: var(--muted); line-height: 1.7; max-width: 480px; }

/* FILTER BAR */
.filters-bar {
  padding: 2rem 4rem; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  position: relative; z-index: 1; background: var(--bg2);
}
.filter-label { font-family: var(--mono); font-size: 0.7rem; color: var(--muted); letter-spacing: 0.1em; margin-right: 0.5rem; }
.filter-btn {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.45rem 1rem; border: 1px solid var(--border);
  background: transparent; color: var(--muted); cursor: pointer; transition: all 0.2s;
}

/* MAIN (inner pages) */
main { padding: 3rem 4rem 5rem; position: relative; z-index: 1; }

/* EMPTY STATE */
.empty-state { display: none; text-align: center; padding: 5rem 2rem; color: var(--muted); }
.empty-state-icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.3; }
.empty-state p { font-family: var(--mono); font-size: 0.85rem; }

/* FOOTER */
footer {
  padding: 2rem 4rem; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem; background: var(--bg); position: relative; z-index: 1;
}
.footer-copy { font-family: var(--mono); font-size: 0.72rem; color: var(--muted); }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { font-family: var(--mono); font-size: 0.72rem; color: var(--muted); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }

/* RESPONSIVE */
@media (max-width: 768px) {
  nav { padding: 1rem 1.5rem; }
  .nav-links {
    display: none; flex-direction: column; gap: 0;
    position: fixed; top: 57px; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 99;
    padding: 0.5rem 0;
  }
  .nav-links li { width: 100%; }
  .nav-links li a { display: block; padding: 0.85rem 1.5rem; font-size: 0.82rem; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; z-index: 101; }
  .page-header { padding: 5rem 1.5rem 2rem; }
  .filters-bar { padding: 1.2rem 1.5rem; gap: 0.5rem; }
  .filter-btn { font-size: 0.65rem; padding: 0.35rem 0.75rem; }
  main { padding-left: 1.5rem; padding-right: 1.5rem; padding-bottom: 3rem; }
  footer { padding: 1.5rem; flex-direction: column; align-items: flex-start; gap: 1.2rem; }
  .footer-links { flex-wrap: wrap; gap: 0.8rem; }
}

@media (max-width: 480px) {
  .page-header h1 { font-size: 2rem; }
  .filter-label { display: none; }
}