/* Shared style for iframe pages (information/about) */

:root {
    /* Theme tokens (default: dark) */
    --bg: #0b1220;
    --bg-grad-1: rgba(96, 165, 250, 0.14);
    --bg-grad-2: rgba(167, 139, 250, 0.14);
    --panel: rgba(255, 255, 255, 0.06);
    --panel-2: rgba(255, 255, 255, 0.05);
    --text: rgba(255, 255, 255, 0.92);
    --muted: rgba(255, 255, 255, 0.68);
    --border: rgba(255, 255, 255, 0.12);
    --divider: rgba(255, 255, 255, 0.12);
    --quote-bg: rgba(0, 0, 0, 0.18);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    --radius: 16px;
    --radius-sm: 12px;
    --accent: #60a5fa;
    --accent-2: #a78bfa;
    color-scheme: dark;
}

/* Auto theme (light system) */
@media (prefers-color-scheme: light) {
    :root {
        --bg: #f6f7fb;
        --bg-grad-1: rgba(59, 130, 246, 0.10);
        --bg-grad-2: rgba(124, 58, 237, 0.08);
        --panel: rgba(15, 23, 42, 0.04);
        --panel-2: rgba(15, 23, 42, 0.03);
        --text: rgba(15, 23, 42, 0.92);
        --muted: rgba(15, 23, 42, 0.64);
        --border: rgba(15, 23, 42, 0.12);
        --divider: rgba(15, 23, 42, 0.12);
        --quote-bg: rgba(15, 23, 42, 0.04);
        --shadow: 0 10px 30px rgba(2, 6, 23, 0.10);
        color-scheme: light;
    }
}

/* Manual override */
html[data-theme="dark"] {
    --bg: #0b1220;
    --bg-grad-1: rgba(96, 165, 250, 0.14);
    --bg-grad-2: rgba(167, 139, 250, 0.14);
    --panel: rgba(255, 255, 255, 0.06);
    --panel-2: rgba(255, 255, 255, 0.05);
    --text: rgba(255, 255, 255, 0.92);
    --muted: rgba(255, 255, 255, 0.68);
    --border: rgba(255, 255, 255, 0.12);
    --divider: rgba(255, 255, 255, 0.12);
    --quote-bg: rgba(0, 0, 0, 0.18);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
}

html[data-theme="light"] {
    --bg: #f6f7fb;
    --bg-grad-1: rgba(59, 130, 246, 0.10);
    --bg-grad-2: rgba(124, 58, 237, 0.08);
    --panel: rgba(15, 23, 42, 0.04);
    --panel-2: rgba(15, 23, 42, 0.03);
    --text: rgba(15, 23, 42, 0.92);
    --muted: rgba(15, 23, 42, 0.64);
    --border: rgba(15, 23, 42, 0.12);
    --divider: rgba(15, 23, 42, 0.12);
    --quote-bg: rgba(15, 23, 42, 0.04);
    --shadow: 0 10px 30px rgba(2, 6, 23, 0.10);
    color-scheme: light;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans SC", "PingFang SC",
        "Microsoft YaHei", Arial, sans-serif;
    background: radial-gradient(circle at 20% 0%, var(--bg-grad-1) 0%, transparent 55%),
        radial-gradient(circle at 85% 10%, var(--bg-grad-2) 0%, transparent 60%), var(--bg);
    background-repeat: no-repeat;
    color: var(--text);
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    color: rgba(96, 165, 250, 0.92);
    text-decoration: underline;
}

.page {
    max-width: 900px;
    margin: 0 auto;
    padding: 18px;
}

.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 18px;
}

h1 {
    margin: 0 0 10px;
    font-size: 24px;
    letter-spacing: 0.2px;
}

.meta {
    display: grid;
    gap: 10px;
    margin-top: 12px;
}

.meta-row {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--panel-2);
}

.meta-label {
    color: var(--muted);
}

.meta-value {
    color: var(--text);
    word-break: break-word;
}

hr {
    border: 0;
    height: 1px;
    background: var(--divider);
    margin: 16px 0;
}

blockquote {
    margin: 0;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--quote-bg);
    color: var(--muted);
}

blockquote p {
    margin: 0;
}

.small {
    color: var(--muted);
    font-size: 13px;
}

@media (max-width: 520px) {
    .page {
        padding: 14px;
    }

    .meta-row {
        grid-template-columns: 1fr;
    }
}