/* ========================================================================
   Sanders AI — colors_and_type.css
   Base tokens + semantic vars. Shared across home-page picker and every
   industry landing page. Imported via <link> at the top of each page.
   ======================================================================== */

/* --- Webfonts (local; degrade to system if not present) ---------------- */
@font-face { font-family: 'Geist'; src: url('assets/fonts/Geist-Regular.ttf') format('truetype'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'Geist'; src: url('assets/fonts/Geist-Medium.ttf') format('truetype'); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: 'Geist'; src: url('assets/fonts/Geist-SemiBold.ttf') format('truetype'); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: 'Satoshi'; src: url('assets/fonts/Satoshi-Variable.ttf') format('truetype'); font-weight: 100 900; font-style: normal; font-display: swap; }
@font-face { font-family: 'Satoshi'; src: url('assets/fonts/Satoshi-Regular.ttf') format('truetype'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'Satoshi'; src: url('assets/fonts/Satoshi-Medium.ttf') format('truetype'); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: 'Satoshi'; src: url('assets/fonts/Satoshi-Bold.ttf') format('truetype'); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('assets/fonts/JetBrainsMono-Regular.ttf') format('truetype'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'JetBrains Mono'; src: url('assets/fonts/JetBrainsMono-Medium.ttf') format('truetype'); font-weight: 500; font-style: normal; font-display: swap; }

:root {
  /* Color tokens */
  --bone-canvas:        #F6F3EC;
  --bone-tint:          #EFEBE0;
  --pure-surface:       #FFFFFF;
  --charcoal-ink:       #151822;
  --graphite:           #3F4654;
  --muted-steel:        #6B7280;
  --whisper-rule:       rgba(21, 24, 34, 0.09);
  --whisper-rule-strong: rgba(21, 24, 34, 0.18);
  --prussian-navy:      #1B365D;
  --navy-hover:         #14263F;
  --navy-tint:          rgba(27, 54, 93, 0.06);
  --navy-ring:          rgba(27, 54, 93, 0.15);
  --signal-red:         #8B2A1E;

  /* Semantic roles */
  --bg:                 var(--bone-canvas);
  --bg-banded:          var(--bone-tint);
  --bg-surface:         var(--pure-surface);
  --bg-inverse:         var(--charcoal-ink);
  --fg:                 var(--charcoal-ink);
  --fg-secondary:       var(--graphite);
  --fg-muted:           var(--muted-steel);
  --fg-inverse:         var(--bone-canvas);
  --accent:             var(--prussian-navy);
  --accent-hover:       var(--navy-hover);
  --accent-tint:        var(--navy-tint);
  --accent-ring:        var(--navy-ring);
  --border:             var(--whisper-rule);
  --border-strong:      var(--whisper-rule-strong);
  --error:              var(--signal-red);

  /* Type families */
  --font-display:       'Geist', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body:          'Satoshi', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono:          'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  /* Type scale */
  --fs-hero:            clamp(2.5rem, 5.25vw, 4.25rem);
  --fs-h1:              clamp(2.25rem, 4vw, 3.25rem);
  --fs-h2:              clamp(1.875rem, 3vw, 2.5rem);
  --fs-h3:              1.5rem;
  --fs-h4:              1.25rem;
  --fs-body-lg:         1.125rem;
  --fs-body:            1rem;
  --fs-body-sm:         0.9375rem;
  --fs-label:           0.875rem;
  --fs-eyebrow:         0.75rem;
  --fs-mono-display:    1.875rem;

  /* Tracking + leading */
  --tracking-hero:      -0.025em;
  --tracking-section:   -0.02em;
  --tracking-ui:        -0.01em;
  --tracking-eyebrow:   0.08em;
  --leading-tight:      1.05;
  --leading-snug:       1.2;
  --leading-normal:     1.4;
  --leading-body:       1.6;

  /* Spacing (8pt) */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.5rem;  --space-6: 2rem;   --space-7: 2.5rem;  --space-8: 4rem;
  --space-9: 6rem;
  --section-rhythm:     clamp(4rem, 9vw, 7rem);

  /* Radii + borders */
  --radius-sm: 0.25rem; --radius-md: 0.5rem; --radius-none: 0;
  --border-1: 1px solid var(--border);
  --border-1-strong: 1px solid var(--border-strong);

  /* Shadows */
  --shadow-card: 0 1px 2px rgba(26, 26, 26, 0.04), 0 8px 24px rgba(26, 26, 26, 0.04);
  --shadow-none: none;

  /* Layout */
  --container-max: 1280px;
  --gutter-desktop: 2rem;
  --gutter-mobile: 1.25rem;
  --grid-gap: 1.5rem;

  /* Motion */
  --ease-reveal: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-reveal: 600ms;
  --dur-hover: 180ms;
  --dur-focus: 120ms;
}

/* ===== Resets + base ==================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--leading-body);
  font-feature-settings: 'ss01', 'ss02', 'cv01';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, .h1 { font-family: var(--font-display); font-size: var(--fs-hero); font-weight: 500; line-height: var(--leading-tight); letter-spacing: var(--tracking-hero); color: var(--fg); margin: 0 0 var(--space-5); text-wrap: balance; }
h2, .h2 { font-family: var(--font-display); font-size: var(--fs-h2); font-weight: 500; line-height: var(--leading-snug); letter-spacing: var(--tracking-section); color: var(--fg); margin: 0 0 var(--space-4); text-wrap: balance; }
h3, .h3 { font-family: var(--font-display); font-size: var(--fs-h3); font-weight: 600; line-height: var(--leading-snug); letter-spacing: var(--tracking-ui); color: var(--fg); margin: 0 0 var(--space-3); }
h4, .h4 { font-family: var(--font-display); font-size: var(--fs-h4); font-weight: 600; line-height: var(--leading-snug); letter-spacing: var(--tracking-ui); color: var(--fg); margin: 0 0 var(--space-2); }
p, .body { font-family: var(--font-body); font-size: var(--fs-body); font-weight: 400; line-height: var(--leading-body); color: var(--fg); margin: 0 0 var(--space-4); max-width: 64ch; text-wrap: pretty; }
.body-lg { font-size: var(--fs-body-lg); line-height: var(--leading-body); }
.body-sm, small { font-size: var(--fs-body-sm); color: var(--fg-secondary); }
.label { font-family: var(--font-body); font-size: var(--fs-label); font-weight: 500; color: var(--fg-secondary); letter-spacing: var(--tracking-ui); }
.meta { font-family: var(--font-body); font-size: var(--fs-label); font-weight: 400; color: var(--fg-muted); }
.eyebrow { font-family: var(--font-body); font-size: 12px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--prussian-navy); }
.mono { font-family: var(--font-mono); font-weight: 400; font-feature-settings: 'tnum', 'zero'; letter-spacing: 0; }
.mono-display { font-family: var(--font-mono); font-size: var(--fs-mono-display); font-weight: 500; letter-spacing: -0.01em; }
.emphasis, strong { font-weight: 600; color: var(--fg); }

a { color: var(--fg-secondary); text-decoration: underline; text-underline-offset: 0.08em; text-decoration-thickness: 1px; transition: color var(--dur-hover) var(--ease-spring); }
a:hover { color: var(--fg); }

hr { border: 0; border-top: var(--border-1); margin: var(--space-6) 0; }
::selection { background: var(--accent); color: var(--fg-inverse); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}