/**
 * Classic Converter — global design tokens (public / reusable)
 * Namespace: --cc-*
 * Theme: set on <html data-cc-theme="light|dark">
 * Import order: tokens → base → utilities → components → app styles
 */

:root {
  /* Surfaces */
  --cc-color-bg: #f5f7fb;
  --cc-color-surface: #ffffff;
  --cc-color-surface-raised: #ffffff;
  --cc-color-surface-muted: #f1f5f9;
  --cc-color-surface-subtle: #f8fafc;
  --cc-color-surface-hover: #f1f5f9;

  /* Text */
  --cc-color-text: #1e293b;
  --cc-color-text-strong: #0f172a;
  --cc-color-text-muted: #59677d;

  /* Borders */
  --cc-color-border: #e2e8f0;
  --cc-color-border-strong: #cbd5e1;
  --cc-color-border-subtle: #f1f5f9;

  /* Accent */
  --cc-color-accent: #2563eb;
  --cc-color-accent-rgb: 37 99 235;
  --cc-color-accent-hover: #1d4ed8;
  --cc-color-accent-muted: #eff6ff;
  --cc-color-on-accent: #ffffff;
  --cc-color-focus-ring: rgb(37 99 235 / 0.35);

  --cc-action-bg: #2558d9;
  --cc-action-hover: #1d46b5;
  --cc-color-success-bg: #edf9f2;
  --cc-color-success-text: #166534;
  --cc-color-success-border: #b8e4c9;
  --cc-color-error-bg: #fff1f2;
  --cc-color-error-text: #a51d36;
  --cc-color-error-border: #fecdd3;
  --cc-color-info-border: #bfdbfe;

  /* Semantic (alerts) */
  --cc-color-warning-bg: #fef3c7;
  --cc-color-warning-text: #92400e;
  --cc-color-warning-border: #fde68a;
  --cc-color-info-bg: #dbeafe;
  --cc-color-info-text: #1e40af;
  --cc-color-danger-bg: #fee2e2;
  --cc-color-danger-text: #991b1b;

  /* Utility panels */
  --cc-color-utility-tint-start: #ffffff;
  --cc-color-utility-tint-end: #f8fafc;
  --cc-color-utility-border: #e2e8f0;

  /* Spacing scale */
  --cc-space-1: 0.25rem;
  --cc-space-2: 0.5rem;
  --cc-space-3: 0.75rem;
  --cc-space-4: 1rem;
  --cc-space-5: 1.25rem;
  --cc-space-6: 1.5rem;
  --cc-space-8: 2rem;
  --cc-space-10: 2.5rem;

  /* Page shell (viewport gutter + card inner horizontal padding) */
  --cc-page-gutter-inline: clamp(1rem, 3vw, 2rem);
  --cc-page-gutter-block: clamp(1rem, 2.5vw, 1.75rem);
  --cc-shell-padding-inline: clamp(1.5rem, 4vw, 3rem);

  /* Radius */
  --cc-radius-sm: 8px;
  --cc-radius-md: 12px;
  --cc-radius-lg: 16px;
  --cc-radius-xl: 24px;
  --cc-radius-full: 999px;

  /* Typography */
  --cc-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --cc-text-xs: 0.75rem;
  --cc-text-sm: 0.8125rem;
  --cc-text-base: 1rem;
  --cc-text-lg: 1.125rem;
  --cc-text-xl: 1.25rem;
  --cc-text-2xl: 1.625rem;
  --cc-text-hero: 2.5rem;
  --cc-font-normal: 400;
  --cc-font-semibold: 600;
  --cc-font-bold: 700;
  --cc-font-extrabold: 800;
  --cc-leading-tight: 1.25;
  --cc-leading-normal: 1.5;

  /* Elevation */
  --cc-shadow-xs: 0 1px 2px rgb(15 23 42 / 0.04);
  --cc-shadow-sm: 0 1px 2px rgb(0 0 0 / 0.05);
  --cc-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --cc-shadow-inset-highlight: inset 0 1px 0 rgb(255 255 255 / 0.6);

  --cc-section-gap: 28px;
  --cc-progress-fill: #2563eb;
  --cc-progress-fill-success: #059669;
  --cc-progress-fill-error: #dc2626;

  /* Motion */
  --cc-duration-fast: 0.15s;
  --cc-duration-normal: 0.2s;
  --cc-ease-standard: cubic-bezier(0.4, 0, 0.2, 1);

  /* Sticky site header (uses html theme; works with component style encapsulation) */
  --cc-header-bar-bg: rgb(255 255 255 / 0.92);
  --cc-header-bar-border: #e2e8f0;
  --cc-header-bar-fg: #0f172a;
  --cc-header-bar-fg-muted: #475569;
  --cc-header-search-bg: #ffffff;
  --cc-header-search-fg: #0f172a;
  --cc-header-search-border: #cbd5e1;
  --cc-header-theme-btn-bg: #e2e8f0;
  --cc-header-theme-btn-fg: #0f172a;
  --cc-header-theme-btn-border: #64748b;

  /* Brand monogram (header logo mark) */
  --cc-logo-size: 3.125rem;
  --cc-logo-gradient-start: #2563eb;
  --cc-logo-gradient-end: #1d4ed8;
  --cc-logo-gradient-start-hover: #3b82f6;
  --cc-logo-gradient-end-hover: #2563eb;
  --cc-logo-border: rgb(255 255 255 / 0.28);
  --cc-logo-shadow: var(--cc-shadow-sm);
  --cc-logo-inset-highlight: inset 0 1px 0 rgb(255 255 255 / 0.35);

  color-scheme: light;
}

[data-cc-theme='dark'] {
  color-scheme: dark;
  --cc-action-bg: #315ed8;
  --cc-action-hover: #3867e5;
  --cc-color-success-bg: #142d26;
  --cc-color-success-text: #91e2b5;
  --cc-color-success-border: #285342;
  --cc-color-error-bg: #361f2a;
  --cc-color-error-text: #ffb4c0;
  --cc-color-error-border: #683647;
  --cc-color-info-border: #304c79;

  --cc-color-bg: #10141e;
  --cc-color-surface: #191f2d;
  --cc-color-surface-raised: #212a3a;
  --cc-color-surface-muted: #252f41;
  --cc-color-surface-subtle: #151b27;
  --cc-color-surface-hover: #252f41;

  --cc-color-text: #e2e8f0;
  --cc-color-text-strong: #f8fafc;
  --cc-color-text-muted: #a8b4c4;

  --cc-color-border: #334155;
  --cc-color-border-strong: #475569;
  --cc-color-border-subtle: #243146;

  --cc-color-accent: #91b7ff;
  --cc-color-accent-rgb: 59 130 246;
  --cc-color-accent-hover: #b6cfff;
  --cc-color-accent-muted: rgb(59 130 246 / 0.18);
  --cc-color-on-accent: #ffffff;
  --cc-color-focus-ring: rgb(96 165 250 / 0.45);

  --cc-color-warning-bg: rgb(234 179 8 / 0.2);
  --cc-color-warning-text: #fde68a;
  --cc-color-warning-border: rgb(234 179 8 / 0.35);
  --cc-color-info-bg: rgb(59 130 246 / 0.2);
  --cc-color-info-text: #93c5fd;
  --cc-color-danger-bg: rgb(239 68 68 / 0.2);
  --cc-color-danger-text: #fecaca;

  --cc-color-utility-tint-start: #191f2d;
  --cc-color-utility-tint-end: #191f2d;
  --cc-color-utility-border: #334155;

  --cc-shadow-xs: 0 1px 2px rgb(0 0 0 / 0.25);
  --cc-shadow-sm: 0 1px 2px rgb(0 0 0 / 0.35);
  --cc-shadow-md: 0 8px 24px rgb(0 0 0 / 0.35);
  --cc-shadow-inset-highlight: inset 0 1px 0 rgb(255 255 255 / 0.06);

  --cc-progress-fill: #3b82f6;
  --cc-progress-fill-success: #34d399;
  --cc-progress-fill-error: #f87171;

  --cc-header-bar-bg: rgb(16 20 30 / 0.96);
  --cc-header-bar-border: #334155;
  --cc-header-bar-fg: #f8fafc;
  --cc-header-bar-fg-muted: #cbd5e1;
  --cc-header-search-bg: #1e293b;
  --cc-header-search-fg: #f8fafc;
  --cc-header-search-border: #475569;
  --cc-header-theme-btn-bg: #334155;
  --cc-header-theme-btn-fg: #f8fafc;
  --cc-header-theme-btn-border: #64748b;

  --cc-logo-gradient-start: #3b82f6;
  --cc-logo-gradient-end: #2563eb;
  --cc-logo-gradient-start-hover: #60a5fa;
  --cc-logo-gradient-end-hover: #3b82f6;
  --cc-logo-border: rgb(255 255 255 / 0.2);
  --cc-logo-shadow: var(--cc-shadow-md);
  --cc-logo-inset-highlight: inset 0 1px 0 rgb(255 255 255 / 0.12);
}