:root {
  --bg: #080b10;
  --border: rgba(255,255,255,0.06);
  --text: #e2e8f0;
  --muted: #64748b;
  --accent: #38bdf8;
  --accent2: #818cf8;
  --accent3: #34d399;
  --white: #ffffff;
}
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  overflow: hidden;
  height: 100vh;
  -webkit-font-smoothing: antialiased;
}
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:1000; opacity:.4;
}
.cursor { width:8px; height:8px; background:var(--accent); border-radius:50%; position:fixed; pointer-events:none; z-index:9999; transform:translate(-50%,-50%); transition:width .2s,height .2s; mix-blend-mode:screen; }
.cursor-ring { width:32px; height:32px; border:1px solid rgba(56,189,248,0.4); border-radius:50%; position:fixed; pointer-events:none; z-index:9998; transform:translate(-50%,-50%); transition:all .12s ease-out; }
#aurora-canvas { position:fixed; inset:0; z-index:0; pointer-events:none; }

nav {
  position:fixed; top:0; left:0; right:0; z-index:900;
  display:flex; align-items:center; justify-content:space-between;
  padding:0 3rem; height:64px;
  background:rgba(4,8,25,0.85);
  backdrop-filter:blur(20px) saturate(180%);
  border-bottom:1px solid var(--border);
}
.nav-brand { text-decoration:none; }

main {
  position:relative; z-index:2;
  height:100vh;
  display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  text-align:center; padding:6rem 2rem 4rem; gap:0;
}

/* ── Glitch 404 ── */
.error-code {
  font-family:'Syne',sans-serif;
  font-size:clamp(8rem,22vw,18rem);
  font-weight:800; line-height:1; letter-spacing:-.04em;
  color:transparent; position:relative;
  -webkit-text-stroke: 1px rgba(56,140,255,0.25);
  animation: fadeIn .5s .1s both;
  user-select:none; margin-bottom:.2rem;
}
.error-code::before, .error-code::after {
  content:'404'; position:absolute; inset:0;
  font-family:'Syne',sans-serif; font-weight:800;
  -webkit-text-stroke:0;
}
.error-code::before {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 50%, var(--accent3) 100%);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
  clip-path: polygon(0 0, 100% 0, 100% 48%, 0 52%);
  animation: glitch1 4s infinite;
}
.error-code::after {
  background: linear-gradient(135deg, var(--accent2) 0%, var(--accent) 100%);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
  clip-path: polygon(0 52%, 100% 48%, 100% 100%, 0 100%);
  animation: glitch2 4s infinite;
}
@keyframes glitch1 {
  0%,88%,100% { transform:translate(0,0); opacity:1; }
  89% { transform:translate(-5px,2px); opacity:.8; filter:hue-rotate(20deg); }
  91% { transform:translate(5px,-2px); opacity:.9; }
  93% { transform:translate(-2px,1px); opacity:.7; }
  95% { transform:translate(0,0); opacity:1; }
}
@keyframes glitch2 {
  0%,88%,100% { transform:translate(0,0); opacity:1; }
  90% { transform:translate(5px,-2px); opacity:.8; filter:hue-rotate(-20deg); }
  92% { transform:translate(-5px,2px); opacity:.9; }
  94% { transform:translate(2px,-1px); opacity:.7; }
  96% { transform:translate(0,0); opacity:1; }
}

/* ── Terminal box ── */
.terminal-wrap {
  background: rgba(4,10,30,0.85);
  backdrop-filter:blur(20px);
  border:1px solid rgba(56,140,255,0.15);
  border-radius:12px; padding:1.4rem 2rem;
  margin:1.2rem 0 2rem; max-width:540px; width:100%;
  text-align:left;
  box-shadow:0 8px 40px rgba(0,0,0,0.45), 0 0 0 1px rgba(56,140,255,0.05), inset 0 1px 0 rgba(255,255,255,0.04);
  animation: fadeIn .7s .3s both;
}
.terminal-bar {
  display:flex; align-items:center; gap:.5rem;
  margin-bottom:.9rem; padding-bottom:.7rem;
  border-bottom:1px solid rgba(56,140,255,0.08);
}
.t-dot { width:10px; height:10px; border-radius:50%; }
.t-dot-red   { background:#ff5f57; }
.t-dot-amber { background:#ffbd2e; }
.t-dot-green { background:#28c840; }
.terminal-bar-title { font-size:.68rem; color:var(--muted); letter-spacing:.1em; text-transform:uppercase; margin-left:.3rem; }
.terminal-line { font-family:'Courier New',monospace; font-size:.82rem; line-height:2.1; color:#6a8aaa; }
.terminal-line .prompt { color:var(--accent); }
.terminal-line .cmd    { color:#e8f4ff; }
.terminal-line .err    { color:#fb7185; }
.terminal-line .ok     { color:var(--accent3); }
.terminal-line .comment{ color:#364760; }
.cursor-blink { display:inline-block; width:8px; height:1em; background:var(--accent); vertical-align:text-bottom; animation:blink .8s step-end infinite; margin-left:2px; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.error-subtitle { font-family:'Syne',sans-serif; font-size:clamp(1rem,2.5vw,1.4rem); font-weight:700; color:var(--white); animation: fadeIn .5s .2s both; }
.error-sub { color:#5a7a94; font-size:.88rem; margin-top:.35rem; margin-bottom:0; animation: fadeIn .5s .25s both; }

.error-actions { display:flex; gap:1rem; flex-wrap:wrap; justify-content:center; animation: fadeIn .7s .5s both; }

.btn { display:inline-flex; align-items:center; gap:.5rem; padding:.75rem 1.75rem; border-radius:8px; font-family:'DM Sans',sans-serif; font-size:.88rem; font-weight:500; cursor:pointer; text-decoration:none; transition:all .22s; border:none; }
.btn-solid { background:var(--accent); color:#080b10; }
.btn-solid:hover { background:#7dd3fc; transform:translateY(-2px); box-shadow:0 8px 32px rgba(56,189,248,0.3); }
.btn-ghost { background:transparent; border:1px solid rgba(255,255,255,0.14); color:var(--text); }
.btn-ghost:hover { border-color:rgba(255,255,255,0.25); background:rgba(255,255,255,0.04); transform:translateY(-2px); }
.arrow { font-style:normal; transition:transform .2s; }
.btn:hover .arrow { transform:translateX(3px); }

.scanline { position:fixed; top:0; left:0; right:0; bottom:0; background:repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.025) 2px, rgba(0,0,0,0.025) 4px); pointer-events:none; z-index:999; }

@keyframes fadeIn { from{opacity:0;transform:translateY(18px)} to{opacity:1;transform:none} }

@media(max-width:600px) {
  nav { padding:0 1.5rem; }
  .terminal-wrap { padding:1rem 1.2rem; }
  .error-actions { flex-direction:column; align-items:center; }
}

footer {
  position:fixed; bottom:0; left:0; right:0; z-index:200;
  background: rgba(4,8,25,0.88);
  backdrop-filter: blur(24px) saturate(150%);
  border-top: 1px solid rgba(56,140,255,0.12);
  box-shadow: 0 -4px 40px rgba(0,0,0,0.4), inset 0 1px 0 rgba(56,140,255,0.06);
}
.footer-inner {
  max-width:1200px; margin:0 auto;
  padding:1.1rem 3rem;
  display:flex; align-items:center; justify-content:space-between;
  flex-wrap:wrap; gap:1rem;
}
.footer-left { display:flex; align-items:center; gap:.8rem; }
.footer-tagline { font-size:.65rem; color:var(--muted); letter-spacing:.14em; text-transform:uppercase; }
.footer-center { flex:1; text-align:center; }
.footer-copy { font-size:.75rem; color:#4a6a84; letter-spacing:.02em; }
.footer-links { display:flex; gap:2rem; }
.footer-links a { font-size:.75rem; color:#4a6a84; text-decoration:none; transition:color .2s; }
.footer-links a:hover { color:var(--accent); }
@media(max-width:600px) { .footer-inner { flex-direction:column; text-align:center; padding:1rem 1.5rem; } }