/* ============================================================
   Discoverability Design System — colors_and_type.css
   ----------------------------------------------------------
   Token foundation for the entire system. Every UI kit, slide,
   and preview card pulls from this file.

   Conventions
   - bg/*       canvas, surface, raised — page backgrounds
   - fg/*       primary, secondary, tertiary, on-accent — text
   - border/*   subtle, strong, focus
   - signal/*   the brand accent — lime electric green
   - data/*     categorical chart palette (1..6)
   - semantic/* positive, negative, warning, info (fg/bg/border)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700&family=Geist+Mono:wght@400;500;600&display=swap');

:root {
  /* -- Core neutrals (cool slate, slight blue undertone) ----- */
  --slate-50:  #F7F8FA;
  --slate-100: #EFF1F4;
  --slate-150: #E5E8ED;
  --slate-200: #D8DCE3;
  --slate-300: #B7BCC6;
  --slate-400: #8E939E;
  --slate-500: #62666F;
  --slate-600: #45484F;
  --slate-700: #2F3137;  /* cool charcoal */
  --slate-800: #1F2126;
  --slate-900: #121317;
  --slate-950: #08090B;

  /* -- Signal: the brand accent ----------------------------- */
  --signal-50:  #F4FCD9;
  --signal-100: #E8F8B0;
  --signal-200: #DBF388;
  --signal-300: #CFEE5F;
  --signal-400: #C6F24E;   /* primary brand accent */
  --signal-500: #B6E03B;
  --signal-600: #93B62E;
  --signal-700: #6E8821;
  --signal-800: #4A5A16;
  --signal-900: #2A330C;

  /* -- Data palette (categorical, 6) ------------------------ */
  --data-1: #3B6FE5;  /* cobalt */
  --data-2: #C6F24E;  /* lime (signal) */
  --data-3: #E5478B;  /* magenta */
  --data-4: #F2A93B;  /* amber */
  --data-5: #2BB3A3;  /* teal */
  --data-6: #8E5DD8;  /* plum */

  --data-1-soft: #E1EAFB;
  --data-2-soft: #F1FBD2;
  --data-3-soft: #FBE0EC;
  --data-4-soft: #FCEDD2;
  --data-5-soft: #D5F0EC;
  --data-6-soft: #EBE0F8;

  /* -- Semantic colours (light theme) ---------------------- */
  --positive-fg:  #2F7D3B;
  --positive-bg:  #E6F4E2;
  --positive-bd:  #BFE2B5;
  --negative-fg:  #B0322A;
  --negative-bg:  #FBE5E2;
  --negative-bd:  #F0BFB8;
  --warning-fg:   #8B5B11;
  --warning-bg:   #FBEED1;
  --warning-bd:   #EFD79B;
  --info-fg:      #1E4FB0;
  --info-bg:      #E1EAFB;
  --info-bd:      #BCD0F2;

  /* -- Semantic surface tokens (light) --------------------- */
  --bg-canvas:   var(--slate-50);
  --bg-surface:  #FFFFFF;
  --bg-raised:   #FFFFFF;
  --bg-sunken:   var(--slate-100);
  --bg-inverse:  var(--slate-950);
  --bg-grid:     rgba(18, 19, 23, 0.04);

  --fg-primary:    var(--slate-900);
  --fg-secondary:  var(--slate-600);
  --fg-tertiary:   var(--slate-500);
  --fg-disabled:   var(--slate-400);
  --fg-on-accent:  var(--slate-950);
  --fg-on-inverse: var(--slate-50);
  --fg-link:       var(--slate-900);

  --border-subtle: rgba(18, 19, 23, 0.10);
  --border-strong: rgba(18, 19, 23, 0.22);
  --border-focus:  var(--signal-400);

  --accent:        var(--signal-400);
  --accent-hover:  var(--signal-500);
  --accent-press:  var(--signal-600);
  --accent-soft:   var(--signal-100);

  /* -- Type ramp -------------------------------------------- */
  --font-sans:    'Geist', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono:    'Geist Mono', ui-monospace, 'JetBrains Mono', Menlo, Consolas, monospace;
  --font-numeric: 'Geist Mono', ui-monospace, Menlo, Consolas, monospace;

  --fs-10: 10px;
  --fs-11: 11px;
  --fs-12: 12px;
  --fs-13: 13px;
  --fs-14: 14px;
  --fs-16: 16px;
  --fs-18: 18px;
  --fs-22: 22px;
  --fs-30: 30px;
  --fs-40: 40px;
  --fs-56: 56px;
  --fs-72: 72px;

  --lh-tight:  1.05;
  --lh-snug:   1.2;
  --lh-normal: 1.45;
  --lh-loose:  1.6;

  --tracking-tight:  -0.02em;
  --tracking-normal: -0.005em;
  --tracking-mono:   0;
  --tracking-caps:   0.06em;

  /* -- Spacing (4px base) ----------------------------------- */
  --sp-0: 0;
  --sp-1: 2px;
  --sp-2: 4px;
  --sp-3: 8px;
  --sp-4: 12px;
  --sp-5: 16px;
  --sp-6: 20px;
  --sp-7: 24px;
  --sp-8: 32px;
  --sp-9: 40px;
  --sp-10: 56px;
  --sp-11: 80px;
  --sp-12: 120px;

  /* -- Radii ------------------------------------------------ */
  --radius-none: 0;
  --radius-xs:   4px;
  --radius-sm:   6px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-pill: 999px;

  /* -- Shadows ---------------------------------------------- */
  --shadow-hairline:
    0 0 0 1px rgba(18, 19, 23, 0.06),
    0 1px 0 0 rgba(18, 19, 23, 0.03);
  --shadow-elevated:
    0 1px 0 0 rgba(18, 19, 23, 0.04),
    0 4px 8px -2px rgba(18, 19, 23, 0.06),
    0 16px 32px -8px rgba(18, 19, 23, 0.10);
  --shadow-popover:
    0 0 0 1px rgba(18, 19, 23, 0.08),
    0 8px 24px -6px rgba(18, 19, 23, 0.18);
  --shadow-focus-ring:
    0 0 0 2px rgba(198, 242, 78, 0.45);
  --shadow-inset-hairline:
    inset 0 0 0 1px rgba(18, 19, 23, 0.06);

  /* -- Motion ----------------------------------------------- */
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --ease-emphasis: cubic-bezier(0.3, 0, 0, 1);
  --dur-instant: 80ms;
  --dur-fast:    120ms;
  --dur-normal:  180ms;
  --dur-slow:    320ms;

  /* -- Layout ----------------------------------------------- */
  --rail-w:        240px;
  --topbar-h:      48px;
  --content-max:   1280px;
  --marketing-max: 1200px;
}

/* ----- Dark theme overrides ------------------------------- */
[data-theme="dark"] {
  --bg-canvas:   var(--slate-950);
  --bg-surface:  var(--slate-900);
  --bg-raised:   var(--slate-800);
  --bg-sunken:   #050503;
  --bg-inverse:  var(--slate-50);
  --bg-grid:     rgba(255, 255, 255, 0.04);

  --fg-primary:    #F1F1EA;
  --fg-secondary:  #B6B6A8;
  --fg-tertiary:   #8C8C7E;
  --fg-disabled:   #5C5C52;
  --fg-on-accent:  var(--slate-950);
  --fg-on-inverse: var(--slate-950);
  --fg-link:       #F1F1EA;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.18);

  --positive-fg:  #84D88B;
  --positive-bg:  rgba(132, 216, 139, 0.10);
  --positive-bd:  rgba(132, 216, 139, 0.28);
  --negative-fg:  #F09289;
  --negative-bg:  rgba(240, 146, 137, 0.10);
  --negative-bd:  rgba(240, 146, 137, 0.28);
  --warning-fg:   #E9C271;
  --warning-bg:   rgba(233, 194, 113, 0.10);
  --warning-bd:   rgba(233, 194, 113, 0.28);
  --info-fg:      #8FB1F0;
  --info-bg:      rgba(143, 177, 240, 0.10);
  --info-bd:      rgba(143, 177, 240, 0.28);

  --shadow-hairline:
    0 0 0 1px rgba(0, 0, 0, 0.5),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  --shadow-elevated:
    0 1px 0 0 rgba(0, 0, 0, 0.4),
    0 8px 24px -6px rgba(0, 0, 0, 0.6);
}

/* ============================================================
   Semantic element styles — base resets and typographic roles
   ============================================================ */

html, body {
  background: var(--bg-canvas);
  color: var(--fg-primary);
  font-family: var(--font-sans);
  font-size: var(--fs-14);
  line-height: var(--lh-normal);
  letter-spacing: var(--tracking-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-variant-numeric: tabular-nums;
}

.h1, h1 {
  font-family: var(--font-sans);
  font-size: var(--fs-56);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  font-weight: 600;
  color: var(--fg-primary);
  margin: 0;
}
.h2, h2 {
  font-size: var(--fs-40);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-tight);
  font-weight: 600;
  margin: 0;
}
.h3, h3 {
  font-size: var(--fs-30);
  line-height: var(--lh-snug);
  letter-spacing: var(--tracking-tight);
  font-weight: 600;
  margin: 0;
}
.h4, h4 {
  font-size: var(--fs-22);
  line-height: var(--lh-snug);
  letter-spacing: var(--tracking-tight);
  font-weight: 600;
  margin: 0;
}
.h5, h5 {
  font-size: var(--fs-18);
  line-height: var(--lh-snug);
  font-weight: 600;
  margin: 0;
}

.body-lg { font-size: var(--fs-16); line-height: var(--lh-loose); color: var(--fg-secondary); }
.body    { font-size: var(--fs-14); line-height: var(--lh-normal); }
.body-sm { font-size: var(--fs-13); line-height: var(--lh-normal); color: var(--fg-secondary); }
.body-xs { font-size: var(--fs-12); line-height: var(--lh-normal); color: var(--fg-tertiary); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
  color: var(--fg-tertiary);
  font-weight: 500;
}

.mono, code, pre, .num {
  font-family: var(--font-mono);
  letter-spacing: var(--tracking-mono);
  font-variant-numeric: tabular-nums;
}

.num-display {
  font-family: var(--font-mono);
  font-size: var(--fs-40);
  font-weight: 500;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

a { color: var(--fg-link); text-decoration: none; border-bottom: 1px solid var(--border-strong); }
a:hover { border-bottom-color: var(--fg-link); }

/* utility surfaces used inside preview cards */
.surface { background: var(--bg-surface); }
.raised  { background: var(--bg-raised); }
.canvas  { background: var(--bg-canvas); }
.inverse { background: var(--bg-inverse); color: var(--fg-on-inverse); }

/* ============================================================
   Tiny utility classes used across previews & UI kits.
   Component implementations live in the UI kits.
   ============================================================ */

.hairline-card {
  background: var(--bg-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-hairline);
}

.elevated-card {
  background: var(--bg-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-elevated);
}

.kbd {
  display: inline-flex;
  align-items: center;
  height: 20px;
  padding: 0 6px;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: var(--radius-xs);
  background: var(--bg-surface);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-secondary);
}

.dot-live {
  width: 8px; height: 8px; border-radius: 999px;
  background: var(--signal-400);
  box-shadow: 0 0 0 3px rgba(198, 242, 78, 0.25);
  animation: live-pulse 1.6s var(--ease-standard) infinite;
}
@keyframes live-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.45; }
}