/* ============================================================
   RobotLAB 2026 — Design Tokens
   B2B corporate refresh. Anchored on RobotLAB brand blue.
   ============================================================ */

:root {
  /* —— Brand ——————————————————————— */
  --rl-blue-900: #0a3a78;        /* deepest, hover on primary */
  --rl-blue-700: #0f4c9c;        /* PRIMARY — RobotLAB blue */
  --rl-blue-500: #2f6fc4;        /* mid, links */
  --rl-blue-100: #e6efff;        /* tinted bg */
  --rl-blue-050: #f4f8ff;        /* subtle wash */

  /* —— Accents (restrained, oklch — same chroma/lightness, hue varied) —— */
  --rl-accent-clay: oklch(0.68 0.12 45);   /* warm CTA accent */
  --rl-accent-cyan: oklch(0.68 0.12 220);  /* cool secondary */
  --rl-accent-mint: oklch(0.68 0.12 160);  /* "live" / data positive */

  /* —— Neutrals (cool-tinted, very low chroma) ———————————— */
  --rl-ink-900:  #0c1320;
  --rl-ink-700:  #2a3142;
  --rl-ink-500:  #5b6479;
  --rl-ink-400:  #828ba0;
  --rl-ink-300:  #b6bdcc;
  --rl-ink-200:  #d8dde7;
  --rl-ink-100:  #ebeef4;
  --rl-ink-050:  #f5f7fa;
  --rl-paper:    #ffffff;
  --rl-page:     #fafbfd;

  /* —— Type ————————————————————————— */
  --rl-font-display: 'Inter Tight', 'Söhne', system-ui, sans-serif;
  --rl-font-body:    'IBM Plex Sans', system-ui, sans-serif;
  --rl-font-mono:    'IBM Plex Mono', ui-monospace, monospace;

  /* —— Spacing scale (4px base) ————————————————— */
  --s-1: 4px;  --s-2: 8px;  --s-3: 12px; --s-4: 16px;
  --s-5: 20px; --s-6: 24px; --s-8: 32px; --s-10: 40px;
  --s-12: 48px; --s-16: 64px; --s-20: 80px; --s-24: 96px;
  --s-32: 128px;

  /* —— Radii / shadow ————————————————————— */
  --r-sm: 4px; --r-md: 8px; --r-lg: 12px; --r-xl: 20px;
  --shadow-sm: 0 1px 2px rgba(12,19,32,.06), 0 1px 3px rgba(12,19,32,.04);
  --shadow-md: 0 4px 12px rgba(12,19,32,.06), 0 2px 4px rgba(12,19,32,.04);
  --shadow-lg: 0 12px 40px rgba(12,19,32,.10), 0 4px 12px rgba(12,19,32,.05);

  /* —— Layout ———————————————————————— */
  --container: 1280px;
  --container-narrow: 960px;
}

/* —— Reset-ish + base ——————————————————————— */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--rl-font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--rl-ink-900);
  background: var(--rl-page);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
h1,h2,h3,h4,h5,h6 {
  font-family: var(--rl-font-display);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin: 0;
  text-wrap: balance;
}
p { margin: 0; text-wrap: pretty; }

/* —— Type scale ——————————————————————— */
.t-display  { font-family: var(--rl-font-display); font-weight: 600; font-size: clamp(40px, 5.5vw, 72px); line-height: 1.02; letter-spacing: -0.025em; }
.t-h1       { font-family: var(--rl-font-display); font-weight: 600; font-size: clamp(32px, 4vw, 52px); line-height: 1.05; letter-spacing: -0.02em; }
.t-h2       { font-family: var(--rl-font-display); font-weight: 600; font-size: clamp(26px, 2.8vw, 38px); line-height: 1.1;  letter-spacing: -0.018em; }
.t-h3       { font-family: var(--rl-font-display); font-weight: 600; font-size: clamp(20px, 1.8vw, 24px); line-height: 1.2; }
.t-eyebrow  { font-family: var(--rl-font-mono); font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; color: var(--rl-blue-700); }
.t-lead     { font-size: clamp(17px, 1.4vw, 20px); line-height: 1.5; color: var(--rl-ink-700); }
.t-body     { font-size: 16px; line-height: 1.6; color: var(--rl-ink-700); }
.t-small    { font-size: 14px; line-height: 1.5; color: var(--rl-ink-500); }
.t-mono     { font-family: var(--rl-font-mono); }

/* —— Layout helpers ——————————————————————— */
.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--s-6); }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 var(--s-6); }
.section { padding: clamp(48px, 7vw, 96px) 0; }
.section-tight { padding: clamp(32px, 5vw, 64px) 0; }
.divider { border: 0; border-top: 1px solid var(--rl-ink-200); margin: 0; }

/* —— Buttons ——————————————————————— */
.btn {
  display: inline-flex; align-items: center; gap: var(--s-2);
  padding: 12px 20px;
  border-radius: var(--r-md);
  font-family: var(--rl-font-body);
  font-weight: 500; font-size: 15px;
  border: 1px solid transparent;
  transition: all .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--rl-blue-700); color: white;
}
.btn-primary:hover { background: var(--rl-blue-900); }
.btn-secondary {
  background: white; color: var(--rl-ink-900);
  border-color: var(--rl-ink-200);
}
.btn-secondary:hover { border-color: var(--rl-ink-400); background: var(--rl-ink-050); }
.btn-ghost {
  background: transparent; color: var(--rl-blue-700);
}
.btn-ghost:hover { color: var(--rl-blue-900); }
.btn-lg { padding: 14px 24px; font-size: 16px; }

/* —— Card ——————————————————————— */
.card {
  background: var(--rl-paper);
  border: 1px solid var(--rl-ink-200);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.card-hover { transition: all .2s ease; }
.card-hover:hover { border-color: var(--rl-ink-300); box-shadow: var(--shadow-md); transform: translateY(-2px); }

/* —— Pills / tags ——————————————————————— */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 500;
  background: var(--rl-ink-100); color: var(--rl-ink-700);
  font-family: var(--rl-font-mono); letter-spacing: 0.02em;
}
.pill-blue { background: var(--rl-blue-100); color: var(--rl-blue-700); }
.pill-mint { background: color-mix(in oklch, var(--rl-accent-mint) 18%, white); color: oklch(0.42 0.12 160); }

/* —— Image placeholder ——————————————————————— */
.img-placeholder {
  background-image: repeating-linear-gradient(
    135deg,
    var(--rl-ink-100) 0px, var(--rl-ink-100) 12px,
    var(--rl-ink-050) 12px, var(--rl-ink-050) 24px
  );
  border: 1px solid var(--rl-ink-200);
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--rl-ink-500);
  font-family: var(--rl-font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: center;
  padding: 16px;
  min-height: 160px;
}
.img-placeholder.dark {
  background-image: repeating-linear-gradient(
    135deg,
    #1a2335 0px, #1a2335 12px,
    #141c2c 12px, #141c2c 24px
  );
  border-color: #2a3142;
  color: var(--rl-ink-400);
}

/* —— Utility ——————————————————————— */
.stack { display: flex; flex-direction: column; }
.stack > * + * { margin-top: var(--gap, 16px); }
.row { display: flex; flex-wrap: wrap; }
.grid { display: grid; gap: var(--s-6); }
.muted { color: var(--rl-ink-500); }
.center { text-align: center; }
.eyebrow-row { display: inline-flex; align-items: center; gap: var(--s-3); }
.eyebrow-row::before { content: ''; width: 24px; height: 1px; background: var(--rl-blue-700); }