:root {
  --font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI',
    Roboto, Helvetica, Arial, sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 0.9375rem;
  --text-md: 1.0625rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 1.875rem;

  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 999px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 120ms;
  --duration-base: 200ms;
  --duration-slow: 320ms;

  --header-height: 64px;
  --header-height-mobile: 56px;
  --player-height: 76px;
  --content-max-width: 1180px;
  --content-padding-inline: clamp(1rem, 4vw, 2.5rem);

  --z-header: 100;
  --z-mobile-menu: 200;
  --z-player: 150;
  --z-skip-link: 300;
  --z-search-overlay: 250;

  --color-bg: #ffffff;
  --color-surface: #fafaf9;
  --color-surface-2: #f4f4f2;
  --color-border: #e7e7e3;
  --color-border-strong: #d8d8d3;

  --color-text: #16160f;
  --color-text-muted: #57574f;
  --color-text-faint: #83837a;

  --color-accent: #35506b;
  --color-accent-soft: #e7edf1;
  --color-accent-contrast: #ffffff;

  --shadow-sm: 0 1px 2px rgba(20, 20, 15, 0.05);
  --shadow-md: 0 6px 16px rgba(20, 20, 15, 0.07);
  --shadow-lg: 0 14px 32px rgba(20, 20, 15, 0.09);

  --focus-ring: 0 0 0 2px var(--color-bg), 0 0 0 4px var(--color-accent);
}

html[data-theme='dark'] {
  --color-bg: #0a0a09;
  --color-surface: #131311;
  --color-surface-2: #1b1b18;
  --color-border: #2a2a26;
  --color-border-strong: #38382f;

  --color-text: #f2f2ee;
  --color-text-muted: #a5a59a;
  --color-text-faint: #8a8a7e;

  --color-accent: #8aa4b8;
  --color-accent-soft: #1c2731;
  --color-accent-contrast: #0a0a09;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 14px 32px rgba(0, 0, 0, 0.4);

  --focus-ring: 0 0 0 2px var(--color-bg), 0 0 0 4px var(--color-accent);
}