/* Shikaku documentation – shared styles */
:root {
    --bg: #F8F5EF;
    --ink: #2C2C32;
    --muted: #6E6E78;
    --line: rgba(0, 0, 0, 0.07);
    --lavender: #C7B8E3;
    --mint: #ADD6C7;
    --peach: #F0CDBC;
    --radius: 18px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Rounded", "SF Pro", "Segoe UI", Roboto, sans-serif;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

body {
    max-width: 720px;
    margin: 0 auto;
    padding: 48px 24px 80px;
}

header {
    margin-bottom: 36px;
    text-align: center;
}

.logo {
    width: 96px;
    height: 96px;
    margin: 0 auto 16px;
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 2fr 1fr;
    gap: 4px;
}

.logo span {
    border-radius: 14px;
    display: block;
}

.logo .b1 { grid-row: 1; grid-column: 1; background: var(--lavender); }
.logo .b2 { grid-row: 1; grid-column: 2; background: var(--mint); }
.logo .b3 { grid-row: 2; grid-column: 1 / span 2; background: var(--peach); }

h1 {
    font-size: 32px;
    margin: 0;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.subtitle {
    color: var(--muted);
    font-size: 14px;
    margin-top: 6px;
}

h2 {
    font-size: 20px;
    font-weight: 600;
    margin-top: 36px;
    margin-bottom: 10px;
}

h3 {
    font-size: 16px;
    font-weight: 600;
    margin-top: 24px;
    margin-bottom: 6px;
}

p, li {
    font-size: 16px;
    color: var(--ink);
}

ul {
    padding-left: 22px;
}

a {
    color: #4F66B5;
    text-decoration: none;
    border-bottom: 1px solid rgba(79, 102, 181, 0.25);
}

a:hover {
    border-bottom-color: rgba(79, 102, 181, 0.6);
}

.card {
    background: #FFFFFF;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px 24px 8px;
    margin-top: 18px;
}

.card h2:first-child {
    margin-top: 0;
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 24px;
}

.nav-links a {
    border-bottom: none;
    background: #FFFFFF;
    border: 1px solid var(--line);
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 14px;
    color: var(--ink);
}

.lang-divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--muted);
    font-size: 12px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin: 48px 0 24px;
}

.lang-divider::before,
.lang-divider::after {
    content: "";
    flex: 1;
    border-bottom: 1px solid var(--line);
}

.lang-divider span {
    padding: 0 12px;
}

footer {
    margin-top: 64px;
    text-align: center;
    color: var(--muted);
    font-size: 13px;
}

footer a {
    color: var(--muted);
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

code {
    background: rgba(0,0,0,0.05);
    padding: 1px 6px;
    border-radius: 6px;
    font-size: 14px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}