/* ============================================
   Stethiano · Design Tokens
   ============================================ */

:root {
  /* Color · Brand */
  --color-primary: #0F766E;
  --color-primary-hover: #115E59;
  --color-primary-soft: #CCFBF1;
  --color-primary-tint: #F0FDFA;
  --color-accent: #F59E0B;
  --color-accent-hover: #D97706;
  --color-accent-soft: #FEF3C7;

  /* Color · Surface */
  --color-bg: #F9FAFB;
  --color-surface: #FFFFFF;
  --color-surface-2: #F3F4F6;
  --color-surface-3: #E5E7EB;

  /* Color · Text */
  --color-text: #111827;
  --color-text-2: #374151;
  --color-muted: #6B7280;
  --color-muted-2: #9CA3AF;

  /* Color · Border */
  --color-border: #E5E7EB;
  --color-border-strong: #D1D5DB;
  --color-divider: #F3F4F6;

  /* Color · Semantic */
  --color-success: #10B981;
  --color-success-soft: #D1FAE5;
  --color-warning: #F59E0B;
  --color-warning-soft: #FEF3C7;
  --color-danger: #EF4444;
  --color-danger-soft: #FEE2E2;
  --color-info: #3B82F6;
  --color-info-soft: #DBEAFE;

  /* Typography */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-display: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --text-xs: 0.75rem;     /* 12 */
  --text-sm: 0.875rem;    /* 14 */
  --text-base: 1rem;      /* 16 */
  --text-lg: 1.125rem;    /* 18 */
  --text-xl: 1.25rem;     /* 20 */
  --text-2xl: 1.5rem;     /* 24 */
  --text-3xl: 1.875rem;   /* 30 */
  --text-4xl: 2.25rem;    /* 36 */
  --text-5xl: 3rem;       /* 48 */
  --text-6xl: 3.75rem;    /* 60 */

  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.55;
  --leading-relaxed: 1.7;

  --tracking-tight: -0.02em;
  --tracking-tighter: -0.035em;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 48px;
  --space-10: 64px;
  --space-11: 80px;
  --space-12: 96px;

  /* Radii */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(17, 24, 39, 0.04);
  --shadow-sm: 0 1px 2px rgba(17, 24, 39, 0.06), 0 1px 3px rgba(17, 24, 39, 0.04);
  --shadow-md: 0 2px 6px rgba(17, 24, 39, 0.04), 0 4px 16px rgba(17, 24, 39, 0.06);
  --shadow-lg: 0 8px 24px rgba(17, 24, 39, 0.08), 0 2px 6px rgba(17, 24, 39, 0.04);
  --shadow-xl: 0 24px 48px rgba(17, 24, 39, 0.12), 0 8px 16px rgba(17, 24, 39, 0.06);
  --shadow-focus: 0 0 0 4px rgba(15, 118, 110, 0.18);

  /* Motion */
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 140ms;
  --dur-base: 220ms;
  --dur-slow: 360ms;

  /* Layout */
  --container: 1240px;
  --sidebar-w: 264px;
  --header-h: 72px;
  --bottom-nav-h: 64px;
  --z-header: 40;
  --z-dropdown: 60;
  --z-modal: 80;
  --z-toast: 90;
}