/* Apex Balancing — design tokens (see design.md) */
:root {
    --color-paper: oklch(97.8% 0.005 255);
    --color-paper-2: oklch(94.6% 0.010 255);
    --color-paper-3: oklch(91% 0.014 255);
    --color-rule: oklch(86.5% 0.012 255);
    --color-muted: oklch(47% 0.022 258);
    --color-ink-2: oklch(33% 0.030 260);
    --color-ink: oklch(21% 0.035 262);
    --color-logo: #14415E;          /* exact brand colour from the logo */
    --color-navy: oklch(31% 0.110 258);
    --color-navy-2: oklch(36% 0.120 257);
    --color-navy-deep: oklch(22% 0.070 260);
    --color-navy-line: oklch(40% 0.070 258);
    --color-on-navy: oklch(96.5% 0.010 255);
    --color-on-navy-2: oklch(80% 0.030 255);
    --color-accent: oklch(55% 0.170 255);
    --color-accent-on-navy: oklch(78% 0.110 240);
    --color-signal: oklch(64% 0.190 30);
    --color-focus: oklch(55% 0.170 255);

    /* data-viz only */
    --color-zone-a: oklch(66% 0.140 155);
    --color-zone-b: oklch(78% 0.150 125);
    --color-zone-c: oklch(78% 0.150 75);
    --color-zone-d: oklch(60% 0.200 27);
    --color-trace-2: oklch(72% 0.130 300);
    --color-trace-3: oklch(80% 0.140 80);
    --color-ok-bg: oklch(95% 0.040 155);
    --color-ok-ink: oklch(38% 0.090 155);
    --color-err: oklch(52% 0.190 27);

    --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
    --font-body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
    --font-data: "IBM Plex Mono", ui-monospace, Consolas, monospace;

    --space-3xs: 0.25rem;
    --space-2xs: 0.5rem;
    --space-xs: 0.75rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4.5rem;
    --space-3xl: 7rem;

    --text-xs: 0.8125rem;
    --text-sm: 0.9375rem;
    --text-md: 1.0625rem;
    --text-lg: 1.3125rem;
    --text-xl: 1.75rem;
    --text-2xl: clamp(1.9rem, 3vw + 0.6rem, 2.75rem);
    --text-display: clamp(2.4rem, 4.2vw + 0.8rem, 4.25rem);

    --radius: 4px;
    --rule: 1px solid var(--color-rule);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --dur-short: 160ms;
    --header-h: 68px;
    --z-header: 30;
    --z-menu: 40;
}