/* S1L5 — styles.css */
:root {
  --bg: #070c10;
  --bg-2: #0b1117;
  --text: #cfd8e3;
  --muted: #8ea0b3;
  --card: rgba(15, 20, 28, 0.6);
  --stroke: rgba(255, 255, 255, 0.08);
  --primary: #00e5ff; /* cyber cyan */
  --accent: #b026ff;  /* neon violet */
  --ok: #9ef01a;
  --warn: #ffd166;
  --danger: #ff5d5d;

  --radius: 18px;
  --maxw: 1200px;
  --shadow-1: 0 10px 40px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255,255,255,0.03);
  --shadow-2: 0 8px 24px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 1200px at 120% -10%, rgba(176, 38, 255, 0.18), transparent 60%),
              radial-gradient(900px 900px at -10% 10%, rgba(0, 229, 255, 0.18), transparent 60%),
              var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Canvas background */
#field {
  position: fixed;
  inset: 0;
  z-index: -1;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.2rem;
  background: linear-gradient(180deg, rgba(7,12,16,0.85), rgba(7,12,16,0.6));
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--stroke);
}

.brand { display: inline-flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--text); font-weight: 700; letter-spacing: 0.06em;}
.brand-mark { color: var(--accent); filter: drop-shadow(0 0 10px rgba(176,38,255,0.6)); }
.brand-text { font-size: 1.1rem; }

.site-nav { display: flex; gap: 1rem; }
.site-nav a { color: var(--muted); text-decoration: none; padding: 0.5rem 0.75rem; border-radius: 999px; }
.site-nav a:hover { color: var(--text); background: rgba(255,255,255,0.04); }

.nav-toggle { display: none; background: transparent; border: 0; color: var(--text); }

.theme-toggle {
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid var(--stroke);
  color: var(--text);
  border-radius: 999px;
  padding: 0.4rem 0.6rem;
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
}
.theme-toggle .sun { display: none; }
:root[data-theme="light"] .theme-toggle .sun { display: block; }
:root[data-theme="light"] .theme-toggle .moon { display: none; }

/* Hero */
.hero {
  position: relative;
  padding: clamp(4rem, 8vw, 8rem) 1.25rem 4rem;
  text-align: center;
}
.hero__content { max-width: 900px; margin: 0 auto; }
.glow {
  font-size: clamp(2.2rem, 7vw, 5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-shadow: 0 0 30px rgba(0, 229, 255, 0.25);
}
.grad { background: linear-gradient(90deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.sub { color: var(--muted); font-size: clamp(1rem, 2.2vw, 1.25rem); margin-top: 0.75rem; }

.cta { margin-top: 1.5rem; display: flex; gap: 0.8rem; justify-content: center; flex-wrap: wrap; }

.btn {
  --ring: 0 0 0 0 rgba(0,0,0,0);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  border-radius: 14px;
  text-decoration: none;
  border: 1px solid var(--stroke);
  color: var(--text);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  box-shadow: var(--ring), var(--shadow-2);
  transition: transform 120ms ease, box-shadow 120ms ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.primary {
  background: linear-gradient(90deg, color-mix(in oklab, var(--primary) 70%, #fff 10%), color-mix(in oklab, var(--accent) 70%, #fff 10%));
  border: none;
  color: #001114;
  font-weight: 700;
}
.btn.ghost { background: transparent; }
.btn.small { padding: 0.5rem 0.75rem; border-radius: 10px; font-size: 0.9rem; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem; }
.stats .num { display:block; font-weight: 800; font-size: clamp(1.4rem, 3.2vw, 2rem); }
.stats .label { display:block; color: var(--muted); font-size: 0.95rem; }

/* Sections */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 2rem 1.25rem; }
.section-title { font-size: clamp(1.4rem, 3vw, 2rem); margin-bottom: 1rem; }

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.card {
  background: var(--card);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow-1);
  transform: translateY(8px);
  opacity: 0;
  transition: transform 500ms cubic-bezier(.2,.75,.25,1), opacity 600ms ease;
}
.card.reveal { transform: translateY(0); opacity: 1; }
.card h3 { margin-top: 0.25rem; }
.card .bullets { margin: 0.5rem 0 0; padding-left: 1.1rem; color: var(--muted); }

/* Showcase rail */
.showcase .rail { display: grid; grid-auto-flow: column; grid-auto-columns: 260px; gap: 1rem; overflow-x: auto; padding-bottom: 0.5rem; scroll-snap-type: x mandatory; }
.tile {
  scroll-snap-align: start;
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 1rem;
  min-height: 160px;
  box-shadow: var(--shadow-2);
  transform: translateY(8px);
  opacity: 0;
  transition: transform 500ms cubic-bezier(.2,.75,.25,1), opacity 600ms ease;
}
.tile.reveal { transform: translateY(0); opacity: 1; }
.tag { display: inline-block; margin-top: 0.5rem; margin-right: 0.4rem; padding: 0.2rem 0.5rem; font-size: 0.8rem; border-radius: 999px; background: rgba(0,0,0,0.35); border: 1px solid var(--stroke); color: var(--muted); }

.rail-controls { display: flex; gap: 0.5rem; justify-content: flex-end; margin-top: 0.5rem; }

/* Roadmap */
.timeline { list-style: none; padding-left: 0; border-left: 2px dashed rgba(255,255,255,0.1); margin-left: 0.75rem; }
.timeline li { position: relative; margin: 1rem 0 1.25rem 0.75rem; padding-left: 0.75rem; }
.timeline .dot { position:absolute; left:-16px; top:0.3rem; width:10px; height:10px; border-radius:50%; background: var(--primary); box-shadow: 0 0 18px rgba(0,229,255,0.6); }

/* Form */
.form input, .form textarea {
  width: 100%; padding: 0.75rem 0.8rem; border-radius: 12px;
  border: 1px solid var(--stroke); background: rgba(255,255,255,0.02); color: var(--text);
}
.form label { display: grid; gap: 0.4rem; margin-bottom: 0.8rem; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.form .row.between { grid-template-columns: 1fr auto; align-items: center; }
.checkbox { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--muted); }
.form-status { min-height: 1.4rem; color: var(--ok); }

/* Footer */
.site-footer { border-top: 1px solid var(--stroke); margin-top: 2rem; }
.site-footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.25rem; color: var(--muted); }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--text); }

/* Animations */
@media (prefers-reduced-motion: no-preference) {
  .btn.primary { animation: pulse 3.5s ease-in-out infinite; }
  @keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0,229,255,0.25); }
    50% { box-shadow: 0 0 40px 6px rgba(0,229,255,0.2); }
  }
}

/* Responsive */
@media (max-width: 960px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr 1fr; }
}
@media (max-width: 680px) {
  .site-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-nav[open] { display: flex; position: absolute; top: 56px; left: 0; right: 0; background: var(--bg-2); padding: 0.5rem; border-bottom: 1px solid var(--stroke); }
  .grid { grid-template-columns: 1fr; }
  .form .row { grid-template-columns: 1fr; }
  .site-footer .wrap { flex-direction: column; }
}

/* Utilities */
.sr-only{ position:absolute !important; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); border:0; }
[data-elevate]{ will-change: transform; }
[data-collapsible] a { display:inline-block; }

/* Reveal animation */
.reveal { /* class gets added by JS */ }