/* ─────────────────────────────────────────────────────────────────────────────
   Finken × Jive — shared design system ("quiet analyst's desk on warm paper")
   Source of truth: /design system/DESIGN.md (Seline reference).
   Warm stone canvas · white cards · hairline borders as structure · one cyan
   voice · Inter Tight (Roobert substitute) display at weight 400 · Inter body.
   Linked by both / (dashboard) and /gm (marketing hub).
   ──────────────────────────────────────────────────────────────────────────── */
:root {
  /* Colors */
  --color-stone-canvas: #fafaf9;
  --color-pure-white: #ffffff;
  --color-stone-border: #e8e6e5;
  --color-stone-muted: #d6d3d1;
  --color-ash-gray: #a8a29e;
  --color-warm-gray: #78716c;
  --color-ink-black: #0c0a09;
  --color-soot: #1c1917;
  --color-sky-wash: #c1e1f7;
  --color-cyan-signal: #3ba6f1;
  --color-cyan-edge: #3398e1;

  /* Semantic aliases used across pages */
  --canvas: var(--color-stone-canvas);
  --card: var(--color-pure-white);
  --line: var(--color-stone-border);
  --line-2: var(--color-stone-muted);
  --ink: var(--color-ink-black);
  --soot: var(--color-soot);
  --muted: var(--color-warm-gray);
  --faint: var(--color-ash-gray);
  --accent: var(--color-cyan-signal);
  --accent-edge: var(--color-cyan-edge);
  --wash: var(--color-sky-wash);
  --caution: #92653a; /* warm-brown caution text — stays inside the warm family */

  /* Typography */
  --font-display: 'Inter Tight', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Radii */
  --radius-cards: 10px;
  --radius-inputs: 6px;
  --radius-buttons: 9999px;
  --radius-feature: 16px;

  /* Shadows */
  --shadow-md: rgba(0, 0, 0, 0.05) 0px 4px 16px 0px;
  --shadow-sm: rgba(0, 0, 0, 0.1) 0px 4px 6px -1px, rgba(0, 0, 0, 0.1) 0px 2px 4px -2px;
  --shadow-subtle: rgba(0, 0, 0, 0.05) 0px 1px 2px 0px;
  --shadow-xl: rgba(17, 12, 46, 0.12) 0px 12px 45px 0px;

  /* Layout */
  --page-max: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--canvas);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  font-size: 14px;
  line-height: 1.64;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Display type — whisper-weight authority */
.t-display, .t-heading {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--ink);
}
.t-display { font-size: 52px; line-height: 1.12; letter-spacing: -1.092px; }
.t-heading { font-size: 32px; line-height: 1.25; letter-spacing: -0.8px; }
.t-sub { font-size: 20px; line-height: 1.2; letter-spacing: -0.1px; font-family: var(--font-display); font-weight: 400; }
@media (max-width: 720px) { .t-display { font-size: 36px; } .t-heading { font-size: 26px; } }

/* The signature: one cyan highlight span per headline */
.hl {
  color: var(--accent-edge);
  background: var(--wash);
  border-radius: 4px;
  padding: 1px 8px;
  white-space: nowrap;
}
@media (max-width: 720px) { .hl { white-space: normal; } }

/* Pills */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-body); font-size: 14px; font-weight: 500;
  border-radius: var(--radius-buttons); padding: 8px 16px;
  text-decoration: none; cursor: pointer; line-height: 1.4;
}
.btn-primary { background: var(--accent); border: 1px solid var(--accent-edge); color: #fff; }
.btn-primary:hover { background: var(--accent-edge); }
.btn-ghost { background: transparent; border: 1px solid var(--line); color: var(--ink); font-weight: 400; }
.btn-ghost:hover { border-color: var(--line-2); background: var(--card); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }