/**
 * Agent Readiness Index — Design System Tokens
 * Canonical CSS custom properties for readiness.coaretail.com
 *
 * Usage: link before page-specific styles; override sparingly.
 * Spec: /design.md
 */

:root {
  /* ── Color: text ── */
  --color-text-primary: #09090B;
  --color-text-secondary: #52525B;
  --color-text-muted: #71717A;

  /* ── Color: surfaces ── */
  --color-surface: #FFFFFF;
  --color-surface-subtle: #FAFAFA;
  --color-surface-muted: #F4F4F5;

  /* ── Color: borders ── */
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-strong: rgba(0, 0, 0, 0.16);

  /* ── Color: brand accent ── */
  --color-accent: #1B56B0;
  --color-accent-soft: rgba(27, 86, 176, 0.08);

  /* ── Color: CTA ── */
  --color-cta: #09090B;
  --color-cta-text: #FFFFFF;
  --color-cta-hover: #27272A;

  /* ── Color: semantic ── */
  --color-success: #16A34A;
  --color-success-soft: #F0FDF4;
  --color-success-soft-alt: #F8FDF9;
  --color-warning: #CA8A04;
  --color-warning-soft: #FFFBEB;
  --color-danger: #DC2626;
  --color-danger-soft: #FEF2F2;

  /* Product exception: Report / LINE fulfillment CTA */
  --color-action-line: #06C755;
  --color-action-line-hover: #05B04C;

  /* ── Legacy aliases (hub pages — migrate imports gradually) ── */
  --bg: var(--color-surface);
  --bg-elevated: var(--color-surface-subtle);
  --bg-card: var(--color-surface-muted);
  --border: var(--color-border);
  --border-hover: var(--color-border-strong);
  --text: var(--color-text-primary);
  --text-secondary: var(--color-text-secondary);
  --text-muted: var(--color-text-muted);
  --accent: var(--color-accent);
  --accent-soft: var(--color-accent-soft);
  --cta: var(--color-cta);
  --cta-text: var(--color-cta-text);
  --cta-hover: var(--color-cta-hover);

  /* ── Layout ── */
  --container-max: 1120px;
  --container-reading: 720px;
  --container-wide: 1120px;
  --container-gutter: 24px;
  --nav-height: 64px;

  /* ── Spacing scale ── */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 80px;
  --space-10: 96px;
  --space-11: 128px;

  /* ── Radius ── */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 999px;

  /* Legacy radius aliases */
  --radius: var(--radius-md);
  --max: var(--container-max);

  /* ── Typography ── */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
               'Hiragino Sans', 'Noto Sans JP', sans-serif;

  --text-display: clamp(2rem, 4.5vw, 3.25rem);
  --text-h1: clamp(1.75rem, 4vw, 2.75rem);
  --text-h2: clamp(1.375rem, 2.5vw, 1.75rem);
  --text-h3: 1.0625rem;
  --text-body: 16px;
  --text-body-lg: 17px;
  --text-small: 14px;
  --text-xs: 13px;
  --text-eyebrow: 12px;
  --text-metric: clamp(1.25rem, 2vw, 1.75rem);
  --text-price: clamp(1.25rem, 2vw, 1.75rem);

  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.65;
  --leading-relaxed: 1.85;

  /* ── Breakpoints (reference — use in @media) ── */
  /* md: 768px · lg: 960px · xl: 1120px */

  /* ── Motion ── */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
}

/* ── Optional base utilities (opt-in; no forced reset) ── */

.ari-container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
}

.ari-container--reading {
  max-width: var(--container-reading);
}

.ari-container--wide {
  max-width: var(--container-wide);
}

.ari-section-label {
  font-size: var(--text-eyebrow);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.ari-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.ari-btn--primary {
  background: var(--color-cta);
  color: var(--color-cta-text);
}

.ari-btn--primary:hover {
  background: var(--color-cta-hover);
}

.ari-btn--secondary {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}

.ari-btn--secondary:hover {
  background: var(--color-surface-subtle);
}

.ari-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.ari-card--highlight {
  border: 2px solid var(--color-success);
  background: var(--color-success-soft-alt);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}