:root {
    color-scheme: light;
    --bg: #f6f3ee;
    --panel: rgba(255, 255, 255, 0.82);
    --ink: #1a1a1a;
    --muted: #5c5c5c;
    --accent: #0f766e;
    --border: rgba(17, 24, 39, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Georgia, 'Times New Roman', serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(15, 118, 110, 0.16), transparent 30%),
        radial-gradient(circle at bottom right, rgba(180, 83, 9, 0.14), transparent 28%),
        var(--bg);
}

a {
    color: inherit;
}

.page {
    min-height: 100vh;
    padding: 24px;
}

.shell {
    max-width: 1180px;
    margin: 0 auto;
}

/* Used by full editor demos only; keeps gallery/viewer pages at the base shell width. */
.shell.shell-editor {
    max-width: 1800px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
}

.brand {
    font-size: 14px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
}

.nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.nav a,
.button {
    text-decoration: none;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--panel);
    backdrop-filter: blur(8px);
}

.hero {
    display: grid;
    gap: 18px;
    margin: 32px 0;
}

.hero h1 {
    margin: 0;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: clamp(34px, 6vw, 58px);
    line-height: 0.98;
    font-weight: 700;
}

.hero p {
    margin: 0;
    max-width: 720px;
    font-size: 18px;
    line-height: 1.5;
    color: var(--muted);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
}

.card,
.canvas-card {
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: var(--panel);
    backdrop-filter: blur(12px);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.06);
}

.card h2,
.canvas-card h2 {
    margin: 0 0 8px 0;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 18px;
    line-height: 1.2;
}

.card p,
.canvas-card p {
    margin: 0 0 14px 0;
    color: var(--muted);
    line-height: 1.45;
}

.canvas-frame {
    width: 100%;
    min-height: 560px;
    border-radius: 20px;
    border: 1px dashed rgba(17, 24, 39, 0.18);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(248, 248, 248, 0.92));
    overflow: hidden;
}

.canvas-frame.tall {
    min-height: 680px;
}

.stack {
    display: grid;
    gap: 18px;
}

.facts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

.fact {
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.55);
}

.fact strong {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
}

.fact span {
    line-height: 1.4;
}

.canvas-frame canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.canvas-frame[data-compact='true'] {
    min-height: 480px;
}

.split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 18px;
}

.panel-list {
    display: grid;
    gap: 12px;
}

.panel-item {
    padding: 14px;
    border-radius: 18px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.55);
}

.panel-item h3 {
    margin: 0 0 6px 0;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 14px;
}

.panel-item p,
.panel-item li {
    margin: 0;
    color: var(--muted);
    line-height: 1.45;
    font-size: 14px;
}

.panel-item ul {
    margin: 0;
    padding-left: 18px;
}

@media (max-width: 900px) {
    .split {
        grid-template-columns: 1fr;
    }
}

.note {
    font-size: 14px;
    color: var(--muted);
}

/* Hint cards shared by all demo pages */
.hint-grid {
    margin-top: 12px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
}

.hint-card {
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.68);
    padding: 10px 12px;
}

.hint-card h3 {
    margin: 0 0 6px;
    font: 700 12px/1.2 'Helvetica Neue', Helvetica, Arial, sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #0f766e;
}

.hint-card p {
    margin: 0;
    font-size: 13px;
    line-height: 1.4;
    color: #475569;
}