/* Kokino Forensic Toolkit website - Zero Science Lab. The colors, logo and
   background follow the application's own (ui/css/app.css). */

:root {
  --bg: #0b0e11;
  --bg2: #11161b;
  --panel: rgba(17, 22, 27, .88);
  --line: rgba(197, 217, 232, .10);
  --line2: rgba(197, 217, 232, .18);
  --text: #e4ebf1;
  --muted: #8796a3;
  --accent: #c5d9e8;
  --accent2: #8fb3d1;
  --accent-ink: #0f1a24;
  --grid: rgba(197, 217, 232, .42);
  --scan: rgba(197, 217, 232, .6);
  --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", Consolas, "SF Mono", Menlo, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
  --radius: 14px;
  --ease: cubic-bezier(.22, .8, .24, 1);
  --shadow: 0 12px 40px rgba(0, 0, 0, .35);
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #eef2f5;
  --bg2: #e2e8ee;
  --panel: rgba(255, 255, 255, .92);
  --line: rgba(21, 32, 42, .10);
  --line2: rgba(21, 32, 42, .18);
  --text: #15202a;
  --muted: #5b6b78;
  --accent: #3f6e93;
  --accent2: #2f5677;
  --accent-ink: #ffffff;
  --grid: rgba(47, 86, 119, .55);
  --scan: rgba(47, 86, 119, .8);
  --shadow: 0 12px 34px rgba(21, 32, 42, .12);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15.5px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre { font-family: var(--mono); font-size: 13px; }
code { background: var(--line); padding: 1px 5px; border-radius: 5px; }
pre { background: var(--bg2); border: 1px solid var(--line2); border-radius: 10px; padding: 12px 14px; overflow-x: auto; white-space: pre; }
h1, h2, h3 { margin: 0; letter-spacing: -.01em; }
h1 { font-size: clamp(30px, 5vw, 48px); line-height: 1.1; font-weight: 700; }
h2 { font-size: 26px; font-weight: 650; margin-bottom: 18px; }
h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 650; margin-bottom: 8px; }
p { margin: 0 0 10px; }
.muted { color: var(--muted); }

/* ---------- background: the application's perspective grid ---------- */
.ambient { position: fixed; inset: 0; pointer-events: none; overflow: hidden; z-index: 0; }
.ambient svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.tunnel-g { transform-origin: 1000px 525px; animation: breathe 22s var(--ease) infinite alternate; }
@keyframes breathe { from { transform: scale(1); } to { transform: scale(1.045); } }
.scanline { animation: scan 9s linear infinite; }
@keyframes scan { 0% { transform: translateY(0); opacity: 0; } 8% { opacity: 1; } 92% { opacity: 1; } 100% { transform: translateY(340px); opacity: 0; } }
.ambient::after { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse 62% 58% at center, color-mix(in srgb, var(--bg) 90%, transparent) 0%, color-mix(in srgb, var(--bg) 45%, transparent) 55%, transparent 100%); }
@media (prefers-reduced-motion: reduce) { .tunnel-g, .scanline { animation: none; } html { scroll-behavior: auto; } }

/* ---------- header ---------- */
.top { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 18px; padding: 12px 24px; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; }
.brand:hover { text-decoration: none; }
.eyes { display: inline-block; flex: none; width: 38px; height: 38px; border-radius: 50%; background: #3a2c10 url(../img/logo-eyes.png) center / 100% no-repeat; box-shadow: 0 0 0 2px var(--bg2), 0 0 0 3.5px var(--accent), 0 6px 18px rgba(0, 0, 0, .35); transition: background-size .9s var(--ease), transform .9s var(--ease); }
.brand:hover .eyes { background-size: 135%; transform: scale(1.06); }
.wordmark { position: relative; display: inline-block; width: 128px; aspect-ratio: 640 / 157; }
.wordmark i { position: absolute; inset: 0; -webkit-mask: center / contain no-repeat; mask: center / contain no-repeat; }
.wordmark .wm-main { background: var(--text); -webkit-mask-image: url(../img/wordmark-main.png); mask-image: url(../img/wordmark-main.png); }
.wordmark .wm-sub { background: var(--muted); -webkit-mask-image: url(../img/wordmark-sub.png); mask-image: url(../img/wordmark-sub.png); }
.wordmark .wm-acc { background: var(--accent); -webkit-mask-image: url(../img/wordmark-accent.png); mask-image: url(../img/wordmark-accent.png); }
.nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--text); padding: 6px 10px; border-radius: 8px; font-size: 14.5px; }
.nav a:hover { background: var(--line); text-decoration: none; }
button { font: inherit; color: var(--text); cursor: pointer; }
.ghost { background: none; border: 1px solid var(--line2); border-radius: 8px; padding: 6px 10px; font-size: 13.5px; }
.ghost:hover { background: var(--line); }
.menu { display: none; }

/* ---------- layout ---------- */
main { position: relative; z-index: 1; max-width: 1120px; margin: 0 auto; padding: 0 24px; }
section { padding: 56px 0 24px; }
.hero { display: grid; grid-template-columns: 1fr auto; gap: 56px; align-items: center; padding-top: 64px; }
.hero h1 { margin: 14px 0 16px; }
.lead { font-size: 19px; line-height: 1.55; }
.pill { display: inline-block; border: 1px solid var(--line2); border-radius: 999px; padding: 3px 12px; font-size: 13px; color: var(--muted); background: var(--panel); }
.row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: 10px; border: 1px solid var(--line2); background: var(--panel); color: var(--text); font-weight: 600; font-size: 14.5px; }
.btn:hover { text-decoration: none; border-color: var(--accent2); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { background: var(--accent2); border-color: var(--accent2); }
.btn small { font-weight: 500; opacity: .75; }
.painting { margin: 0; text-align: center; justify-self: end; width: 100%; max-width: 260px; }
.painting .frame { border-radius: 18px; overflow: hidden; box-shadow: var(--shadow), 0 0 0 1px var(--line2); transform: rotate(-1.5deg); }
.painting img { display: block; width: 100%; height: auto; }
.painting figcaption { margin-top: 12px; color: var(--muted); font-size: 13px; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.card { background: var(--panel); border: 1px solid var(--line2); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow); }
.card p:last-child { margin-bottom: 0; }
.card.note { margin-top: 16px; }
/* Buttons at the bottom of each card, on one line across the three. */
.card.dl { display: flex; flex-direction: column; }
.dl .row { margin-top: auto; padding-top: 12px; }
.links { margin: 0; padding-left: 18px; }
.links li { margin: 4px 0; }
.steps { padding-left: 22px; margin: 0 0 24px; }
.steps li { margin: 0 0 10px; }
#start h3 { margin-top: 22px; }
.faq details { background: var(--panel); border: 1px solid var(--line2); border-radius: 12px; padding: 12px 16px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin: 10px 0 0; color: var(--muted); }
.flag { vertical-align: -1px; }
.foot { position: relative; z-index: 1; max-width: 1120px; margin: 40px auto 0; padding: 24px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; border-top: 1px solid var(--line); font-size: 13.5px; }

/* ---------- small screens ---------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 28px; }
  .painting { max-width: 220px; margin: 0 auto; justify-self: center; }
  .grid, .grid.two { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .top { padding: 10px 16px; gap: 10px; flex-wrap: wrap; }
  .menu { display: inline-block; margin-left: auto; }
  .theme { order: 2; }
  .nav { display: none; width: 100%; order: 3; flex-direction: column; margin: 0; }
  .nav.open { display: flex; }
  main { padding: 0 16px; }
  section { padding-top: 40px; }
  .grid, .grid.two { grid-template-columns: 1fr; }
  .lead { font-size: 17px; }
  .foot { padding: 20px 16px; }
}