:root {
  /* --- yüzeyler: serin near-white + mürekkep --- */
  --color-paper: oklch(98% 0.006 245);
  --color-paper-2: oklch(95.5% 0.01 245);
  --color-paper-3: oklch(92% 0.015 245);
  --color-ink: oklch(17% 0.012 245);
  --color-night: #0b1014;                   /* --color-ink'in hex karşılığı; halka canvas bg'si ile birebir aynı olmalı */
  --color-ink-2: oklch(23% 0.015 245);
  --color-muted: oklch(42% 0.014 245);
  --color-rule: oklch(78% 0.012 245);
  --color-rule-soft: oklch(88% 0.008 245);
  --color-rule-dark: oklch(34% 0.014 245);

  /* --- kapak mavisi (hero görselinden) --- */
  --color-accent: oklch(46% 0.2 258);
  --color-accent-ink: oklch(98% 0.006 245);

  /* --- marka kırmızısı: tek aksan (dashboard, hover, halka) --- */
  --color-brand: #dc3345;
  --color-chart: var(--color-brand);
  --color-chart-soft: oklch(78% 0.11 18);
  --color-chart-surface: oklch(96.5% 0.008 25);
  --color-chart-surface-2: oklch(94.5% 0.012 25);
  --color-chart-rule: color-mix(in srgb, var(--color-chart) 11%, transparent);
  --color-chart-border: color-mix(in srgb, var(--color-chart) 16%, transparent);
  --color-chart-ink: oklch(27% 0.02 25);
  --color-pos: oklch(55% 0.14 158);
  --color-pos-bg: oklch(95% 0.045 160);
  --color-pos-border: color-mix(in srgb, var(--color-pos) 22%, transparent);

  --color-focus: oklch(62% 0.22 258);
  --color-transparent: transparent;
  --color-shadow: oklch(17% 0.012 245 / 0.12);

  --font-display: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;
  --font-body: "Satoshi", system-ui, -apple-system, sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.25rem;
  --text-lg: 1.5625rem;
  --text-xl: 1.953rem;
  --text-2xl: 2.441rem;
  --text-display-s: clamp(2rem, 5vw, 3.25rem);
  --text-display: clamp(2.25rem, 4.2vw, 3.75rem);

  --space-3xs: 0.125rem;
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 9rem;

  /* --- hareket sistemi: mesa-animations.md §6.1 / §6.2 --- */
  --motion-instant: 120ms;
  --motion-fast: 200ms;
  --motion-normal: 350ms;
  --motion-slow: 600ms;
  --motion-xslow: 900ms;

  --ease-standard: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-enter: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-exit: cubic-bezier(0.7, 0, 0.84, 0);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* dosyanın önceki adlandırması; yeni işlerde yukarıdaki isimler kullanılır */
  --ease-out: var(--ease-enter);
  --ease-in: var(--ease-exit);
  --dur-micro: var(--motion-instant);
  --dur-short: 220ms;

  /* reveal mesafesi — §4.1 önerisi 16–40px */
  --motion-rise: 1.5rem;

  --rule-hair: 1px;
  --rule-heavy: 2px;
  --radius-control: 999px;
  --radius-card: 0.5rem;
  --radius-small: 0.25rem;
  --shadow-whisper: 0 1px 2px var(--color-shadow);
  --shadow-pill: 0 8px 24px -12px oklch(17% 0.012 245 / 0.35);
  --blur-header: 0.4rem;

  --page-max: 71.25rem;
  --page-gutter: clamp(1rem, 5vw, 4rem);

  --z-raised: 10;
  --z-sticky: 200;
  --z-tooltip: 600;
}