/* CrimeSeal unlock site. Noir by default, paper in light mode. System fonts only, no external requests. */
:root {
  --bg: #0e1014; --bg2: #13161c; --card: #181b22; --card2: #1f232c; --ink: #ece7de; --muted: #9b968d;
  --rule: #2a2f39; --accent: #c0262a; --accent-ink: #fff; --brass: #d8b26a; --ok: #6fd28e; --bad: #ff7b6e;
  --key: #232833; --key-ink: #ece7de; --paper: #f4ecdc; --paper-ink: #1b1b1f; --glow: rgba(192, 38, 42, 0.35);
  --radius: 16px; --max: 1120px;
  --serif: ui-serif, "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: ui-sans-serif, -apple-system, "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #f3eee4; --bg2: #ebe4d6; --card: #fffdf8; --card2: #f6f1e7; --ink: #17181c; --muted: #67625a;
  --rule: #ddd5c6; --accent: #a4161a; --key: #ece5d7; --key-ink: #17181c; --brass: #9a7426; --ok: #1f7a3a;
  --bad: #b3261e; --glow: rgba(164, 22, 26, 0.18); color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; background: var(--bg); color: var(--ink); }
body {
  font: 17px/1.55 var(--serif); -webkit-text-size-adjust: 100%; min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 85% -10%, var(--glow), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(216, 178, 106, 0.06), transparent 60%),
    var(--bg);
}
a { color: inherit; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.08; margin: 0; letter-spacing: -0.01em; }
p { margin: 0.5em 0; }
.muted { color: var(--muted); }
.small { font-size: 0.86rem; }
.label, .kicker { font: 600 0.74rem/1.4 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.kicker { color: var(--brass); }
.hidden { display: none !important; }

/* ---- header ---- */
header.top {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 18px;
  max-width: var(--max); margin: 0 auto; padding: 14px 20px;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 78%, transparent); border-bottom: 1px solid color-mix(in srgb, var(--rule) 60%, transparent);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 800 0.95rem var(--sans); letter-spacing: 0.22em; }
.brand-seal { width: 22px; height: 22px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #e2463a, #a4161a 55%, #5e0b0e); box-shadow: 0 0 0 2px rgba(0,0,0,0.25) inset, 0 2px 10px var(--glow); }
header.top nav { margin-left: auto; display: flex; gap: 18px; font: 500 0.92rem var(--sans); }
header.top nav a { text-decoration: none; color: var(--muted); }
header.top nav a:hover { color: var(--ink); }
button { font: inherit; cursor: pointer; }
.toggle { background: transparent; color: var(--muted); border: 1px solid var(--rule); border-radius: 999px; padding: 5px 14px; font: 500 0.82rem var(--sans); }
.toggle:hover { color: var(--ink); border-color: var(--muted); }
body:not(.home) header.top nav { display: none; }
body:not(.home) .toggle { margin-left: auto; }

/* ---- hero ---- */
.hero { max-width: var(--max); margin: 0 auto; padding: 64px 20px 40px; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(2.6rem, 6.4vw, 5.2rem); font-weight: 700; margin: 14px 0 18px; }
.hero h1 em { font-style: italic; color: var(--accent); }
.lede { font-size: 1.18rem; color: var(--muted); max-width: 34rem; }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.cta, .ghost, a.button {
  display: inline-block; text-decoration: none; padding: 13px 22px; border-radius: 999px; font: 700 0.98rem var(--sans);
}
.cta, a.button { background: var(--accent); color: var(--accent-ink); box-shadow: 0 10px 30px var(--glow); }
.cta:hover, a.button:hover { filter: brightness(1.08); transform: translateY(-1px); }
.ghost { border: 1px solid var(--rule); color: var(--ink); }
.ghost:hover { border-color: var(--muted); }
.envelope-art { width: 100%; max-width: 460px; display: block; margin: 0 auto; animation: float 7s ease-in-out infinite; }
.env-stamp { font: 700 15px var(--mono); fill: #a4161a; letter-spacing: 3px; opacity: 0.75; }
.seal-mono { font: 700 34px var(--serif); fill: #ffd9d2; text-anchor: middle; opacity: 0.85; }
.seal { animation: press 7s ease-in-out infinite; }
.seal-edge { filter: drop-shadow(0 6px 10px rgba(0,0,0,0.45)); }
@keyframes float { 0%, 100% { transform: translateY(0) rotate(-1.5deg); } 50% { transform: translateY(-12px) rotate(0.5deg); } }

/* ---- how it works ---- */
.how { max-width: var(--max); margin: 0 auto; padding: 30px 20px 60px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); padding: 24px; }
.step .num { font: 700 0.9rem var(--mono); color: var(--accent); letter-spacing: 0.12em; }
.step h3 { font-size: 1.35rem; margin: 10px 0 8px; }
.step p { color: var(--muted); font-size: 0.98rem; }

/* ---- shelf ---- */
.shelf { max-width: var(--max); margin: 0 auto; padding: 10px 20px 60px; }
.shelf-head h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 26px; margin-top: 26px; }
.group-title { grid-column: 1 / -1; margin: 14px 0 -6px; }
.case-card { text-decoration: none; display: block; border-radius: var(--radius); background: var(--card); border: 1px solid var(--rule); overflow: hidden; transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s; }
.case-card:hover { transform: translateY(-6px) rotate(-0.4deg); box-shadow: 0 24px 50px rgba(0,0,0,0.45), 0 0 0 1px var(--accent); }
.case-card img { display: block; width: 100%; height: auto; aspect-ratio: 5 / 8; object-fit: cover; background: var(--card2); }
.case-card .meta { padding: 14px 16px 18px; }
.case-card h3 { font-size: 1.25rem; margin: 6px 0 4px; }
.case-card .tag { font: 600 0.7rem var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--brass); }
.case-card .skill { color: var(--muted); font-size: 0.9rem; }

.promise { max-width: var(--max); margin: 0 auto 30px; padding: 0 20px; }
.promise p { border: 1px solid var(--rule); border-radius: var(--radius); padding: 22px 26px; background: linear-gradient(120deg, var(--card), var(--card2)); font-size: 1.05rem; }
.site-footer { max-width: var(--max); margin: 0 auto; padding: 26px 20px 40px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--muted); font: 0.84rem var(--sans); border-top: 1px solid var(--rule); }

/* ---- case page ---- */
.app { max-width: 760px; margin: 0 auto; padding: 18px 20px 40px; }
.case-hero { display: grid; grid-template-columns: 150px 1fr; gap: 22px; align-items: end; margin: 18px 0 8px; }
.case-hero img { width: 150px; height: auto; border-radius: 10px; box-shadow: 0 16px 40px rgba(0,0,0,0.5); transform: rotate(-2deg); }
.case-hero h1 { font-size: clamp(2rem, 6vw, 3.2rem); margin: 6px 0 6px; }
.card { background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); padding: 22px; margin: 18px 0; }
.entry { position: relative; overflow: hidden; }
.entry::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: linear-gradient(90deg, var(--accent), var(--brass)); opacity: 0.8; }
.checkpoint .entry { border-style: dashed; }
.checkpoint .entry::before { background: var(--brass); }
.status { min-height: 1.6em; text-align: center; margin: 8px 0; font: 600 0.95rem var(--sans); }
.status.bad { color: var(--bad); }
.status.ok { color: var(--ok); }

.slots { display: flex; gap: 10px; justify-content: center; margin: 18px 0 8px; }
.slot { width: 3.1rem; height: 3.8rem; border: 1.5px solid var(--rule); border-radius: 12px; display: grid; place-items: center; font: 600 1.8rem var(--mono); background: var(--bg2); transition: border-color 0.2s, transform 0.15s; }
.slot.filled { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 6px 18px var(--glow); }
.slot.colour { width: 5.4rem; font: 700 0.95rem var(--sans); }

.keypad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; max-width: 19rem; margin: 14px auto; }
.keypad.symbols { grid-template-columns: repeat(auto-fit, minmax(4.2rem, 1fr)); max-width: 24rem; }
.key { background: var(--key); color: var(--key-ink); border: 1px solid var(--rule); border-radius: 14px; height: 3.7rem; font: 600 1.45rem var(--mono); transition: transform 0.08s, background 0.15s; }
.key:hover:not(:disabled) { background: var(--card2); }
.keypad.symbols .key { font: 2rem/1 var(--sans); height: 4.2rem; }
.key.act { background: transparent; font-size: 1.05rem; }
.key.go { background: var(--accent); color: var(--accent-ink); border-color: transparent; font: 700 1.02rem var(--sans); box-shadow: 0 8px 22px var(--glow); }
.key.go.wide { display: block; width: 100%; max-width: 19rem; margin: 14px auto 0; height: 3.4rem; }
.key:disabled { opacity: 0.45; cursor: not-allowed; }
.key:active:not(:disabled) { transform: scale(0.96); }
.entry.done .keypad, .entry.done .colours { display: none; }
.colours { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 8px auto 4px; max-width: 24rem; }
.swatch { color: #fff; border: 0; border-radius: 999px; padding: 10px 18px; font: 700 0.95rem var(--sans); text-transform: lowercase; box-shadow: 0 4px 12px rgba(0,0,0,0.3); }
.swatch:disabled { opacity: 0.45; }

.ending p { margin: 0.85em 0; font-size: 1.08rem; }
.ending h2 { font-size: 1.4rem; margin: 1.2em 0 0.4em; }
.ending h3 { font-size: 1.1rem; margin: 1.1em 0 0.3em; }
.ending ul { padding-left: 1.2em; }
details { margin-top: 18px; border-top: 1px solid var(--rule); padding-top: 12px; }
summary { cursor: pointer; font: 700 1rem var(--sans); }
audio { width: 100%; margin: 6px 0 12px; }
.card.message { border-color: var(--brass); background: linear-gradient(140deg, var(--card), var(--card2)); font-size: 1.12rem; }

/* the envelope moment */
.envelope { position: relative; width: min(78vw, 320px); aspect-ratio: 3 / 2; margin: calc(min(78vw, 320px) * 0.45) auto 30px; perspective: 900px; }
.envelope .back { position: absolute; inset: 0; background: #d8c7a3; border-radius: 8px; box-shadow: 0 20px 40px rgba(0,0,0,0.4); }
.envelope .letter { position: absolute; left: 8%; right: 8%; top: 10%; bottom: 8%; background: #fffdf6; border-radius: 4px; display: grid; place-items: center; transition: transform 0.9s cubic-bezier(.2,.8,.2,1) 0.6s; }
.envelope .letter span { font: 800 1.1rem var(--sans); letter-spacing: 0.1em; color: #a4161a; border: 3px solid #a4161a; padding: 4px 10px; transform: rotate(-6deg); }
.envelope .front { position: absolute; inset: 0; background: linear-gradient(to top right, #e9dcbc 50%, transparent 50%) left / 50% 100% no-repeat, linear-gradient(to top left, #e9dcbc 50%, transparent 50%) right / 50% 100% no-repeat; border-radius: 8px; }
.envelope .flap { position: absolute; left: 0; right: 0; top: 0; height: 58%; background: linear-gradient(to bottom, #cdb98f, #c2ad80); clip-path: polygon(0 0, 100% 0, 50% 100%); transform-origin: top; transition: transform 0.6s ease 0.25s; z-index: 3; }
.envelope .wax { position: absolute; left: 50%; top: 52%; width: 54px; height: 54px; margin: -27px 0 0 -27px; border-radius: 50%; z-index: 4;
  background: radial-gradient(circle at 35% 30%, #e2463a, #a4161a 55%, #5e0b0e); box-shadow: 0 6px 14px rgba(0,0,0,0.45); transition: transform 0.45s ease, opacity 0.45s ease; }
.envelope.open .wax { transform: scale(1.4) rotate(25deg); opacity: 0; }
.envelope.open .flap { transform: rotateX(180deg); z-index: 0; }
.envelope.open .letter { transform: translateY(-55%); z-index: 2; }
.reveal { animation: rise 0.7s ease 1.4s both; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* kids gate (shelved line, kept working) */
.gate { position: relative; height: 180px; margin: 10px auto; max-width: 320px; border-radius: 14px; overflow: hidden; background: linear-gradient(#9fd3ff, #e9f4ff); }
.gate .door { position: absolute; top: 0; bottom: 0; width: 50%; background: #c99a5b; border: 4px solid #8a6a3d; transition: transform 1.4s ease-in-out; }
.gate .door.left { left: 0; border-radius: 80px 0 0 0; transform-origin: left; }
.gate .door.right { right: 0; border-radius: 0 80px 0 0; transform-origin: right; }
.gate.open .door.left { transform: translateX(-100%); }
.gate.open .door.right { transform: translateX(100%); }
.gate .sun { position: absolute; left: 50%; top: 45%; width: 70px; height: 70px; margin: -35px 0 0 -35px; border-radius: 50%; background: #ffd93d; box-shadow: 0 0 40px 10px #ffe9a0; }

footer.page-footer { margin: 30px 0 10px; color: var(--muted); font: 0.84rem var(--sans); }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding-top: 36px; gap: 10px; }
  .hero-art { order: -1; max-width: 340px; margin: 0 auto; }
  .how { grid-template-columns: 1fr; }
  header.top nav { display: none; }
  .toggle { margin-left: auto; }
}
@media (max-width: 520px) {
  .case-hero { grid-template-columns: 96px 1fr; gap: 14px; }
  .case-hero img { width: 96px; height: auto; }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .case-card h3 { font-size: 1.05rem; }
  .case-card .skill { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .envelope-art, .seal { animation: none; }
  .envelope .flap, .envelope .letter, .envelope .wax { transition: none; }
  .reveal { animation: none; }
  html { scroll-behavior: auto; }
}
@keyframes press { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.05); } }