/*
 * tokens.css
 * Modern minimalist design tokens for the renewal monitoring dashboard.
 *
 * Color palette (light mode):
 *   neutral-50   #f8fafc   | base page background
 *   neutral-100  #eef2f6   | muted surfaces
 *   neutral-200  #e2e8f0   | soft borders
 *   neutral-700  #334155   | secondary text
 *   neutral-900  #0f172a   | primary text
 *   accent       #2563eb   | brand blue accent
 *   success      #16a34a   | positive state
 *   warning      #f59e0b   | cautionary state
 *   danger       #dc2626   | destructive state
 *
 * Typography scale (12–32px):
 *   --font-size-2xs · 0.75rem (12px)
 *   --font-size-xs  · 0.8125rem (13px)
 *   --font-size-sm  · 0.875rem (14px)
 *   --font-size-md  · 1rem (16px)
 *   --font-size-lg  · 1.125rem (18px)
 *   --font-size-xl  · 1.375rem (22px)
 *   --font-size-2xl · 1.75rem (28px)
 *   --font-size-3xl · 2rem (32px)
 *
 * Spacing scale (4–72px increments):
 *   --space-1 · 0.25rem (4px)
 *   --space-2 · 0.5rem  (8px)
 *   --space-3 · 0.75rem (12px)
 *   --space-4 · 1rem    (16px)
 *   --space-5 · 1.5rem  (24px)
 *   --space-6 · 2rem    (32px)
 *   --space-7 · 2.75rem (44px)
 *   --space-8 · 3.5rem  (56px)
 *   --space-9 · 4.5rem  (72px)
 *
 * Radii scale:
 *   --radius-xs  · 0.35rem (6px)
 *   --radius-sm  · 0.5rem  (8px)
 *   --radius-md  · 0.75rem (12px)
 *   --radius-lg  · 1rem    (16px)
 *   --radius-xl  · 1.5rem  (24px)
 *   --radius-2xl · 2rem    (32px)
 *   --radius-full · 9999px (pill)
 */

:root {
  color-scheme: light dark;

  /* Typography */
  --font-family-sans: "Inter", "Geist", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --font-family-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, "Liberation Mono", monospace;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --font-size-2xs: 0.75rem;
  --font-size-xs: 0.8125rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.375rem;
  --font-size-2xl: 1.75rem;
  --font-size-3xl: 2rem;

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-base: 1.6;

  /* Space */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.75rem;
  --space-8: 3.5rem;
  --space-9: 4.5rem;

  /* Radii */
  --radius-xs: 0.35rem;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  /* Elevation */
  --shadow-xs: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-sm: 0 6px 18px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 14px 32px rgba(15, 23, 42, 0.12);
  --shadow-lg: 0 24px 56px rgba(15, 23, 42, 0.16);

  /* Motion */
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 140ms var(--ease-standard);
  --transition-medium: 220ms var(--ease-standard);
  --transition-slow: 360ms var(--ease-standard);

  /* Layout */
  --layout-max-width: 72rem;
  --layout-gutter: clamp(1.5rem, 4vw, 3rem);
  --content-max-width: 48rem;

  /* Safe areas */
  --safe-area-top: 0px;
  --safe-area-right: 0px;
  --safe-area-bottom: 0px;
  --safe-area-left: 0px;

  /* Color tokens */
  --color-accent: #2563eb;
  --color-accent-strong: #1d4ed8;
  --color-accent-contrast: #f8fafc;
  --color-accent-soft: rgba(37, 99, 235, 0.12);

  --color-surface-page: #f5f7fb;
  --color-surface-muted: #eef2f6;
  --color-surface-card: #ffffff;
  --color-surface-subtle: #f8fafc;
  --color-surface-popover: #ffffff;
  --color-surface-modal: #10172a;
  --color-surface-overlay: rgba(15, 23, 42, 0.45);

  --color-border-soft: #e2e8f0;
  --color-border-strong: #cbd5e1;
  --color-border-focus: rgba(37, 99, 235, 0.45);

  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-tertiary: #64748b;
  --color-text-inverse: #f8fafc;

  --color-status-success: #16a34a;
  --color-status-success-strong: #15803d;
  --color-status-success-soft: rgba(34, 197, 94, 0.16);
  --color-status-warning: #f59e0b;
  --color-status-warning-strong: #b45309;
  --color-status-warning-soft: rgba(245, 158, 11, 0.2);
  --color-status-danger: #dc2626;
  --color-status-danger-strong: #991b1b;
  --color-status-danger-soft: rgba(220, 38, 38, 0.2);
  --color-status-neutral: #64748b;
  --color-status-neutral-soft: rgba(148, 163, 184, 0.24);
  --color-status-info: var(--color-accent);
  --color-status-info-soft: rgba(37, 99, 235, 0.18);
}

@supports (top: env(safe-area-inset-top)) {
  :root {
    --safe-area-top: env(safe-area-inset-top);
    --safe-area-right: env(safe-area-inset-right);
    --safe-area-bottom: env(safe-area-inset-bottom);
    --safe-area-left: env(safe-area-inset-left);
  }
}

@media (min-width: 90rem) {
  :root {
    --layout-max-width: 76rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-surface-page: #0c1424;
    --color-surface-muted: rgba(30, 41, 59, 0.68);
    --color-surface-card: rgba(17, 27, 47, 0.92);
    --color-surface-subtle: rgba(23, 33, 54, 0.85);
    --color-surface-popover: rgba(17, 27, 47, 0.96);
    --color-surface-modal: rgba(15, 23, 42, 0.94);
    --color-surface-overlay: rgba(2, 6, 23, 0.7);

    --color-border-soft: rgba(148, 163, 184, 0.28);
    --color-border-strong: rgba(148, 163, 184, 0.4);
    --color-border-focus: rgba(125, 211, 252, 0.45);

    --color-text-primary: #e2e8f0;
    --color-text-secondary: rgba(226, 232, 240, 0.78);
    --color-text-tertiary: rgba(226, 232, 240, 0.6);
    --color-text-inverse: #0f172a;

    --color-accent-soft: rgba(37, 99, 235, 0.22);
    --color-status-success-soft: rgba(34, 197, 94, 0.24);
    --color-status-warning-soft: rgba(245, 158, 11, 0.28);
    --color-status-danger-soft: rgba(220, 38, 38, 0.28);
    --color-status-neutral-soft: rgba(148, 163, 184, 0.32);
    --color-status-info-soft: rgba(37, 99, 235, 0.3);

    --shadow-xs: 0 1px 2px rgba(2, 6, 23, 0.3);
    --shadow-sm: 0 10px 24px rgba(2, 6, 23, 0.5);
    --shadow-md: 0 18px 40px rgba(2, 6, 23, 0.55);
    --shadow-lg: 0 28px 60px rgba(2, 6, 23, 0.6);
  }
}