/* BBM Computing — single page site
   Blueprint / schematic visual language, grounded in the two-person
   engineering shop this site represents. */

:root {
  --ink: #0F2438;
  --ink-2: #16314A;
  --line: #2A4E6B;
  --paper: #E7EEF1;
  --paper-dim: #9FB4C2;
  --amber: #E1A94C;
  --amber-dim: #B98736;

  --font-display: 'Space Grotesk', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Consolas', monospace;

  --max-w: 920px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--amber); text-decoration: none; }
a:hover { color: var(--amber-dim); text-decoration: underline; }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---- Header ---- */

.site-header {
  padding: 28px 0 0;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-header img {
  width: 30px;
  height: 30px;
  flex: none;
}

.wordmark {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--paper);
}

/* ---- Hero ---- */

.hero {
  padding: 72px 0 88px;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.4vw, 3.1rem);
  line-height: 1.12;
  margin: 0 0 22px;
  max-width: 14ch;
}

.hero p {
  color: var(--paper-dim);
  max-width: 46ch;
  margin: 0 0 30px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 15px;
}

.contact-links a {
  color: var(--paper);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  display: inline-block;
  width: fit-content;
}

.contact-links a:hover { color: var(--amber); border-color: var(--amber); }

.hero-diagram {
  width: 100%;
  height: auto;
}

.hero-diagram path {
  fill: none;
  stroke: var(--line);
  stroke-width: 1.5;
}

.hero-diagram .trace {
  stroke: var(--amber);
  stroke-width: 1.5;
  stroke-dasharray: 340;
  stroke-dashoffset: 340;
}

.hero-diagram circle { fill: var(--ink-2); stroke: var(--paper-dim); stroke-width: 1.5; }
.hero-diagram .node-amber { fill: var(--amber); stroke: none; }

@media (prefers-reduced-motion: no-preference) {
  .hero-diagram .trace {
    animation: draw 2.2s ease-out 0.3s forwards;
  }
}

@keyframes draw {
  to { stroke-dashoffset: 0; }
}

/* ---- Services ---- */

.services {
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}

.services h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin: 0 0 36px;
}

.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.service {
  padding: 30px 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.service .tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--amber);
  margin: 0 0 10px;
}

.service h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 10px;
  font-weight: 500;
}

.service p:not(.tag) {
  color: var(--paper-dim);
  font-size: 14.5px;
  margin: 0;
  max-width: 36ch;
}

/* ---- Contact / footer ---- */

.contact {
  padding: 64px 0 40px;
}

.contact h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin: 0 0 20px;
}

.contact-grid {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.contact-grid div { font-family: var(--font-mono); font-size: 15px; }

.contact-grid .name {
  font-family: var(--font-body);
  color: var(--paper-dim);
  font-size: 13px;
  margin-bottom: 4px;
}

.site-footer {
  padding: 24px 0 40px;
  color: var(--paper-dim);
  font-size: 13px;
  border-top: 1px solid var(--line);
}

/* ---- Responsive ---- */

@media (max-width: 760px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-diagram { max-width: 320px; }
  .service-grid { grid-template-columns: 1fr; }
  .contact-grid { gap: 28px; }
}