/*
  ZENTOOLS — DESIGN TOKENS
  Single source of truth for the visual system. Component and page CSS
  read from these custom properties; never hardcode raw hex/px values.
*/

:root {
  /* ---------- Color: base ---------- */
  --color-bg:            #FFFFFF;
  --color-bg-soft:       #F6F8FC;
  --color-bg-panel:      #FBFCFE;
  --color-ink:           #101828;
  --color-ink-soft:      #344054;
  --color-muted:         #667085;
  --color-border:        #E4E7EC;
  --color-border-strong: #D0D5DD;

  /* ---------- Color: brand ---------- */
  --color-primary:      #4F46E5; /* indigo-600 */
  --color-primary-600:  #4338CA;
  --color-primary-700:  #3730A3;
  --color-primary-100:  #EEF2FF;
  --color-accent:       #2563EB; /* blue-600, used in gradients only */
  --color-accent-100:   #EFF6FF;

  /* ---------- Color: feedback ---------- */
  --color-success:    #067647;
  --color-success-bg: #ECFDF3;
  --color-danger:     #B42318;
  --color-danger-bg:  #FEF3F2;
  --color-warning:    #B54708;
  --color-warning-bg: #FFFAEB;

  /* ---------- Typography ---------- */
  --font-display: 'Sora', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-md:   1.125rem;
  --text-lg:   clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  --text-xl:   clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --text-2xl:  clamp(1.875rem, 1.6rem + 1.4vw, 2.5rem);
  --text-3xl:  clamp(2.125rem, 1.7rem + 2vw, 3.25rem);

  --leading-tight: 1.15;
  --leading-snug: 1.35;
  --leading-normal: 1.6;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.06em;

  /* ---------- Spacing (8px base scale) ---------- */
  --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;
  --space-10: 8rem;

  /* ---------- Radii ---------- */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* ---------- Shadows ---------- */
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06);
  --shadow-md: 0 8px 24px -8px rgba(16, 24, 40, 0.12);
  --shadow-lg: 0 24px 48px -16px rgba(16, 24, 40, 0.18);
  --shadow-focus: 0 0 0 3px rgba(79, 70, 229, 0.35);

  /* ---------- Motion ---------- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 450ms;

  /* ---------- Layout ---------- */
  --container-max: 1200px;
  --header-height: 68px;
}

@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;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-ink);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin: 0;
  font-weight: 700;
}

p { margin: 0; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background: var(--color-ink);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  z-index: 2000;
  transition: top var(--duration-fast) var(--ease-out);
}
.skip-link:focus { top: var(--space-4); }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}
@media (min-width: 768px) {
  .container { padding-inline: var(--space-6); }
}