:root {
    --bg: #fbfdfa;
    --bg-tint: #ecf6ee;
    --ink: #0f2a2e;
    --ink-2: #3a4f4f;
    --muted: #6b7e7c;
    --line: #e3ece3;
    --line-2: #d3e2d6;
    --green: #1f5e3d;
    --green-deep: #134228;
    --green-faint: #e8f3eb;
    --shadow-1: 0 1px 2px rgba(15,42,46,.04), 0 8px 24px rgba(15,42,46,.06);
    --shadow-2: 0 2px 6px rgba(15,42,46,.06), 0 18px 50px rgba(15,42,46,.10);
    --radius: 28px;
    --font-ui: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    --font-display: 'Fraunces', Georgia, serif;
    --font-mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
}

[data-theme="dark"] {
    --bg: #0b1a1c;
    --bg-tint: #102528;
    --ink: #eaf3ec;
    --ink-2: #c2d1c6;
    --muted: #88a094;
    --line: #1c2f31;
    --line-2: #294042;
    --green: #5ab885;
    --green-deep: #9ed8b8;
    --green-faint: #122b22;
    --shadow-1: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
    --shadow-2: 0 2px 6px rgba(0,0,0,.4), 0 18px 50px rgba(0,0,0,.5);
}

[data-theme="forest"] {
    --bg: #0e2a20;
    --bg-tint: #14352a;
    --ink: #e8f3ea;
    --ink-2: #cfe0d3;
    --muted: #8eaa97;
    --line: #1a3b2d;
    --line-2: #265040;
    --green: #9ed8b8;
    --green-deep: #c8ecd5;
    --green-faint: #163a2c;
    --shadow-1: 0 1px 2px rgba(0,0,0,.35), 0 8px 24px rgba(0,0,0,.45);
    --shadow-2: 0 2px 6px rgba(0,0,0,.45), 0 18px 50px rgba(0,0,0,.6);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    min-height: 100vh;
    font-family: var(--font-ui);
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

.bg-wash {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background:
    radial-gradient(1100px 600px at 88% -8%, var(--bg-tint), transparent 60%),
    radial-gradient(900px 520px at -8% 110%, var(--bg-tint), transparent 60%);
}

main.stage {
    position: relative; z-index: 1;
    flex: 1 1 auto;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    padding: 24px 24px 48px;
}

.wordmark {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(64px, 11vw, 132px);
    line-height: 1;
    color: var(--green);
    letter-spacing: -0.02em;
    margin: 0 0 36px;
    user-select: none;
}

.search {
    width: min(580px, 100%);
    display: flex; align-items: center; gap: 12px;
    background: var(--bg);
    border: 1px solid var(--line-2);
    border-radius: var(--radius);
    padding: 12px 18px;
    box-shadow: var(--shadow-1);
    transition: box-shadow .2s ease, border-color .2s ease;
}
.search:hover { box-shadow: var(--shadow-2); }
.search:focus-within {
    box-shadow: var(--shadow-2);
    border-color: var(--green);
}
.search .icon { color: var(--muted); flex: 0 0 auto; }
.search input {
    flex: 1 1 auto;
    border: 0; outline: none; background: transparent;
    font: 16px/1.4 var(--font-ui);
    color: var(--ink);
    padding: 6px 0;
    min-width: 0;
}
.search input::placeholder { color: var(--muted); }

footer.app-footer {
    position: relative; z-index: 2;
    border-top: 1px solid var(--line);
    background: color-mix(in oklab, var(--bg) 86%, transparent);
    backdrop-filter: blur(6px);
    font-size: 13px; color: var(--muted);
}
.footer-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 28px;
    flex-wrap: wrap; gap: 8px;
}
.footer-row .links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-row a { color: inherit; text-decoration: none; }
.footer-row a:hover { color: var(--ink); }

@media (max-width: 640px) {
    .footer-row { padding: 12px 16px; font-size: 12px; }
}

@keyframes rise {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: none; }
}
.rise { animation: rise .5s cubic-bezier(.2,.7,.2,1) both; }
.rise.d1 { animation-delay: .04s; }
.rise.d2 { animation-delay: .14s; }

.dataset-picker {
    display: flex; gap: 8px; flex-wrap: wrap; justify-content: center;
    margin: 18px 0 4px;
}
.dataset-btn {
    display: inline-block;
    padding: 6px 18px;
    border: 1px solid var(--line-2);
    border-radius: 20px;
    text-decoration: none;
    font: 14px/1.4 var(--font-ui);
    color: var(--ink-2);
    background: var(--bg);
    transition: border-color .15s, color .15s, background .15s;
}
.dataset-btn:hover { border-color: var(--green); color: var(--green); }
.dataset-btn.active {
    background: var(--green);
    color: #fff;
    border-color: var(--green);
}