/* Design tokens — Geist + JetBrains Mono loaded via <link> in each HTML head */

:root {
    /* Typography */
    --font-sans: 'Geist', 'Microsoft JhengHei', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', monospace;

    /* Fluid type scale — clamp-driven */
    --step--1: clamp(0.78rem, 0.75rem + 0.15vw, 0.86rem);
    --step-0:  clamp(0.89rem, 0.86rem + 0.16vw, 1rem);
    --step-1:  clamp(1rem, 0.95rem + 0.24vw, 1.14rem);
    --step-2:  clamp(1.13rem, 1.06rem + 0.35vw, 1.33rem);
    --step-3:  clamp(1.27rem, 1.16rem + 0.54vw, 1.6rem);
    --step-4:  clamp(1.42rem, 1.27rem + 0.78vw, 1.9rem);
    --step-5:  clamp(1.6rem, 1.38rem + 1.1vw, 2.28rem);
    --step-6:  clamp(1.8rem, 1.49rem + 1.54vw, 2.75rem);

    /* Surface palette — dark, non-blue-gray */
    --color-bg-base: #0d0e15;
    --color-bg-surface: #13141c;
    --color-bg-elevated: #1b1d29;
    --color-bg-well: rgba(255, 255, 255, 0.025);
    --color-bg-tint: rgba(255, 255, 255, 0.04);

    /* Text */
    --color-text-primary: #e6e6ef;
    --color-text-secondary: #a8a9b5;
    --color-text-muted: #6c6d7d;

    /* Accent */
    --color-accent: #6366f1;
    --color-accent-hover: color-mix(in oklch, var(--color-accent), white 12%);
    --color-accent-soft: color-mix(in srgb, var(--color-accent) 14%, transparent);
    --color-accent-ring: color-mix(in srgb, var(--color-accent) 35%, transparent);
    --color-accent-fg: color-mix(in oklch, var(--color-accent), white 24%);

    /* Semantic tones */
    --color-success: #10b981;
    --color-success-soft: color-mix(in srgb, var(--color-success) 14%, transparent);
    --color-success-ring: color-mix(in srgb, var(--color-success) 35%, transparent);
    --color-success-fg: color-mix(in oklch, var(--color-success), white 22%);

    --color-warning: #f59e0b;
    --color-warning-soft: color-mix(in srgb, var(--color-warning) 15%, transparent);
    --color-warning-ring: color-mix(in srgb, var(--color-warning) 38%, transparent);
    --color-warning-fg: color-mix(in oklch, var(--color-warning), white 26%);

    --color-danger: #ef4444;
    --color-danger-soft: color-mix(in srgb, var(--color-danger) 14%, transparent);
    --color-danger-ring: color-mix(in srgb, var(--color-danger) 36%, transparent);
    --color-danger-fg: color-mix(in oklch, var(--color-danger), white 26%);

    /* Ring system */
    --ring-1: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
    --ring-2: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
    --ring-focus: 0 0 0 3px var(--color-accent-ring);

    /* Radii */
    --radius-outer: 16px;
    --radius-inner: 12px;
    --radius-element: 8px;
    --radius-pill: 9999px;
    --radius-small: 4px;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 40px;
}

/* Base */
body {
    font-family: var(--font-sans);
    font-feature-settings: 'ss01', 'ss03', 'cv11';
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-size: var(--step-0);
    line-height: 1.55;
    color: var(--color-text-primary);
}

p { text-wrap: pretty; }

h1, h2, h3, h4 {
    text-wrap: balance;
    letter-spacing: -0.025em;
    line-height: 1.15;
}

h1 {
    font-size: var(--step-5);
    letter-spacing: -0.035em;
    font-weight: 700;
}
h2 { font-size: var(--step-4); font-weight: 650; }
h3 { font-size: var(--step-3); font-weight: 600; }
h4 { font-size: var(--step-2); font-weight: 600; }

.stat-value,
.platform-value {
    letter-spacing: -0.03em;
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}

/* Eyebrow */
.eyebrow {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
}

th {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
}

.subtitle,
.hint,
.filter-label,
.stat-label,
.result-label,
.last-sync,
.timestamp {
    line-height: 1.75;
}

small, .text-sm {
    line-height: 1.7;
    font-size: var(--step--1);
}

/* Info panel — tone 通過 data-tone 切換 */
.info-panel {
    margin-block-end: 15px;
    padding: 14px 16px;
    border-radius: var(--radius-element);
    background: var(--color-bg-tint);
    box-shadow: var(--ring-1);
    color: var(--color-text-primary);
    font-size: 13px;
}

.info-panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    opacity: 0.82;
    margin-block-end: 10px;
}

.info-panel-title svg {
    inline-size: 14px;
    block-size: 14px;
}

.info-panel-body {
    line-height: 1.65;
    text-wrap: pretty;
}

.info-panel-body code {
    font-family: var(--font-mono);
    background: rgba(0, 0, 0, 0.25);
    padding: 2px 6px;
    border-radius: 4px;
    margin-inline: 2px;
    font-size: 12px;
}

.info-panel[data-tone="info"] {
    background: var(--color-accent-soft);
    box-shadow: inset 0 0 0 1px var(--color-accent-ring);
    color: var(--color-accent-fg);
}
.info-panel[data-tone="success"] {
    background: var(--color-success-soft);
    box-shadow: inset 0 0 0 1px var(--color-success-ring);
    color: var(--color-success-fg);
}
.info-panel[data-tone="warning"] {
    background: var(--color-warning-soft);
    box-shadow: inset 0 0 0 1px var(--color-warning-ring);
    color: var(--color-warning-fg);
}
.info-panel[data-tone="danger"] {
    background: var(--color-danger-soft);
    box-shadow: inset 0 0 0 1px var(--color-danger-ring);
    color: var(--color-danger-fg);
}

/* Accessibility */
:is(button, a, input, select, textarea):focus-visible {
    outline: none;
    box-shadow: var(--ring-focus);
}

::selection {
    background: var(--color-accent-soft);
    color: var(--color-text-primary);
}