/* CycTronics / CycIO site. Light, product-led layout in the style of
   hardware vendors (Phidgets, Raspberry Pi): product shots and specs carry
   the page, not decoration. Colours follow the brown/green logo drafts in
   docs/brand/logo-drafts/. */

:root {
  --ink: #1f1a16;
  --ink-2: #4d4741;
  --ink-3: #746d66;
  --paper: #ffffff;
  --paper-2: #f5f4f1;
  --rule: #dedbd5;
  --accent: #3a6d40;        /* logo green */
  --accent-dark: #2c5531;
  --brand-brown: #48301e;   /* logo brown */
  --accent-ink: #ffffff;
  --code-bg: #1b1d21;
  --code-ink: #e6e6e3;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.55 var(--sans); }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 16px; }
.mono, .sku { font-family: var(--mono); }

/* Status bar */
.statusbar { background: var(--brand-brown); color: #f3ede6; font-size: .85rem; }
.statusbar .wrap { padding-top: 8px; padding-bottom: 8px; }

/* Header */
.site-header { border-bottom: 1px solid var(--rule); background: var(--paper); position: sticky; top: 0; z-index: 10; }
.header-in { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 60px; }
.wordmark { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 1.1rem; text-decoration: none; letter-spacing: -.01em; margin: 0; }
.wordmark img { height: 36px; width: auto; }
.wordmark.small img { height: 30px; }
.product-logo { height: 52px; width: auto; margin: 0 0 18px -4px; }
.main-nav { display: flex; gap: 26px; overflow-x: auto; }
.main-nav a { text-decoration: none; font-weight: 500; font-size: .95rem; color: var(--ink-2); white-space: nowrap; padding: 4px 0; border-bottom: 2px solid transparent; }
.main-nav a:hover { color: var(--ink); border-bottom-color: var(--accent); }

/* Buttons */
.button { display: inline-block; background: var(--accent); color: var(--accent-ink); text-decoration: none; font-weight: 600; padding: 11px 20px; border-radius: 3px; border: 1px solid var(--accent); }
.button:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.button.ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.button.ghost:hover { background: var(--ink); color: var(--paper); }

/* Hero */
.hero { background: var(--paper-2); border-bottom: 1px solid var(--rule); padding: 56px 0 0; }
.hero-grid { display: grid; grid-template-columns: 5fr 6fr; gap: 40px; align-items: center; }
.kicker { font-family: var(--mono); font-size: .85rem; color: var(--accent); margin: 0 0 12px; }
h1 { font-size: clamp(2rem, 4.4vw, 3.2rem); line-height: 1.08; letter-spacing: -.025em; margin: 0 0 18px; font-weight: 700; }
.lead { font-size: 1.12rem; color: var(--ink-2); margin: 0 0 28px; max-width: 34em; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-figure { margin: 0; }
.hero-figure figcaption { font-size: .8rem; color: var(--ink-3); text-align: right; margin-top: -8px; }
.hero-figure figcaption .mono { color: var(--ink); margin-right: 6px; }
.keyfacts { display: grid; grid-template-columns: repeat(4, 1fr); margin: 40px 0 0; border-top: 1px solid var(--rule); }
.keyfacts div { padding: 18px 16px 22px 0; }
.keyfacts div + div { padding-left: 16px; border-left: 1px solid var(--rule); }
.keyfacts dt { font-family: var(--mono); font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); }
.keyfacts dd { margin: 4px 0 0; font-weight: 600; }

/* Sections */
.section { padding: 72px 0; }
.section.tinted { background: var(--paper-2); border-block: 1px solid var(--rule); }
.section-head { margin-bottom: 28px; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); letter-spacing: -.02em; margin: 0 0 8px; }
.section-head p { color: var(--ink-2); margin: 0; max-width: 40em; }
.group-title { font-family: var(--mono); font-weight: 500; font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); border-bottom: 1px solid var(--rule); padding-bottom: 8px; margin: 40px 0 20px; }

/* Products */
.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.product-grid.three { grid-template-columns: repeat(3, 1fr); }
.product { border: 1px solid var(--rule); background: var(--paper); display: flex; flex-direction: column; }
.product-img { background: var(--paper-2); border-bottom: 1px solid var(--rule); aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center; padding: 8px; }
.product-img img { width: 100%; height: 100%; object-fit: contain; }
.product-grid:not(.three) .product-img { aspect-ratio: 16 / 10; }
.product-body { padding: 18px 20px 20px; }
.sku { font-size: .78rem; color: var(--ink-3); margin: 0 0 4px; }
.product h4 { font-size: 1.15rem; margin: 0 0 8px; }
.product p { margin: 0 0 14px; color: var(--ink-2); font-size: .95rem; }
.product.compact p:last-child { margin-bottom: 0; }
.spec { display: grid; grid-template-columns: auto 1fr; margin: 0; border-top: 1px solid var(--rule); font-size: .88rem; }
.spec dt, .spec dd { padding: 7px 0; border-bottom: 1px solid var(--rule); margin: 0; }
.spec dt { color: var(--ink-3); padding-right: 16px; }
.spec dd { font-weight: 500; }
.state { font-family: var(--mono); font-size: .8rem; }
.state.build { color: var(--accent); }
.product-img { background: linear-gradient(#f7f7f5, #ebebe8); }
.roadmap-table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.roadmap-table th { text-align: left; font-family: var(--mono); font-weight: 500; font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); padding: 0 12px 8px 0; }
.roadmap-table td { padding: 11px 12px 11px 0; border-top: 1px solid var(--rule); color: var(--ink-2); vertical-align: top; }
.roadmap-table td:first-child { color: var(--ink); font-weight: 600; white-space: nowrap; }
.roadmap-table td:last-child { font-family: var(--mono); font-size: .82rem; white-space: nowrap; }
.kv .state { margin-right: 8px; }
.contact-card .button { word-break: break-all; }
.footnote { font-size: .82rem; color: var(--ink-3); margin-top: 20px; }

/* System */
.system-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.steps { list-style: none; margin: 0; padding: 0; }
.steps li { display: grid; grid-template-columns: 44px 1fr; gap: 8px; padding: 16px 0; border-top: 1px solid var(--rule); }
.steps .num { font-family: var(--mono); color: var(--accent); font-size: .9rem; padding-top: 2px; }
.steps h4 { margin: 0 0 4px; font-size: 1.02rem; }
.steps p { margin: 0; color: var(--ink-2); font-size: .95rem; }
.schematic { margin: 0; background: var(--paper); border: 1px solid var(--rule); padding: 20px; }
.schematic svg { width: 100%; height: auto; font-family: var(--mono); }
.schematic line, .schematic polyline { fill: none; stroke: var(--ink); stroke-width: 1.5; }
.schematic .dash { stroke: var(--ink-3); stroke-dasharray: 4 4; }
.schematic .box rect { fill: var(--paper); stroke: var(--ink); stroke-width: 1.5; }
.schematic .box.hub rect { stroke: var(--accent); stroke-width: 2; }
.schematic .box.empty rect { stroke: var(--ink-3); stroke-dasharray: 4 4; }
.schematic .box text { text-anchor: middle; font-size: 13px; font-weight: 500; fill: var(--ink); font-family: var(--sans); }
.schematic .box text.sub { font-family: var(--mono); font-size: 11px; fill: var(--ink-3); font-weight: 400; }
.schematic .box.empty text { fill: var(--ink-3); }
.schematic .lbl { font-size: 10.5px; fill: var(--ink-3); }

/* Developers */
.dev-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.kv { border-collapse: collapse; width: 100%; font-size: .95rem; }
.kv th, .kv td { text-align: left; vertical-align: top; padding: 12px 0; border-top: 1px solid var(--rule); }
.kv th { font-family: var(--mono); font-weight: 500; font-size: .85rem; width: 9.5em; padding-right: 12px; }
.kv td { color: var(--ink-2); }
.code-block { background: var(--code-bg); color: var(--code-ink); border-radius: 4px; overflow: hidden; }
.code-title { display: flex; justify-content: space-between; font-family: var(--mono); font-size: .75rem; color: #9a9da3; padding: 10px 16px; border-bottom: 1px solid #2c2f35; }
.code-block pre { margin: 0; padding: 18px 16px 20px; overflow-x: auto; font: .88rem/1.7 var(--mono); }
.tok-k { color: #ff8f8f; } .tok-c { color: #858991; } .tok-s { color: #b7d98b; } .tok-n { color: #f5c26b; }

/* Progress log */
.log { list-style: none; margin: 0; padding: 0; max-width: 820px; }
.log li { display: grid; grid-template-columns: 130px 1fr; gap: 16px; padding: 14px 0; border-top: 1px solid var(--rule); }
.log time { font-family: var(--mono); font-size: .85rem; color: var(--ink-3); padding-top: 2px; }
.log p { margin: 0; }
.next { margin: 24px 0 0; max-width: 820px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-grid > div > p { color: var(--ink-2); max-width: 32em; }
.contact-card { border: 1px solid var(--rule); border-top: 3px solid var(--accent); padding: 24px; }
.contact-card h3 { margin: 0 0 8px; }
.contact-card p { color: var(--ink-2); margin: 0 0 18px; }

/* Footer */
.site-footer { background: #2a1d13; color: #d6cdc4; font-size: .88rem; padding: 32px 0; }
.site-footer .wordmark { color: #fff; margin-bottom: 6px; }
.site-footer .wordmark { margin-bottom: 10px; }
.site-footer p { margin: 0; }
.footer-in { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; }
.footer-in nav { display: flex; flex-wrap: wrap; gap: 20px; }
.footer-in nav a { text-decoration: none; }
.footer-in nav a:hover { color: #fff; }

/* Responsive */
@media (max-width: 900px) {
  .hero-grid, .system-grid, .dev-grid, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .product-grid.three { grid-template-columns: repeat(2, 1fr); }
  .keyfacts { grid-template-columns: repeat(2, 1fr); }
  .keyfacts div:nth-child(3) { padding-left: 0; border-left: 0; }
  .keyfacts div:nth-child(n+3) { border-top: 1px solid var(--rule); }
}
@media (max-width: 620px) {
  .header-in { flex-direction: column; align-items: flex-start; height: auto; gap: 6px; padding-top: 10px; padding-bottom: 8px; }
  .main-nav { gap: 18px; width: 100%; }
  .main-nav a { font-size: .9rem; }
  .hero { padding-top: 36px; }
  .section { padding: 52px 0; }
  .product-grid, .product-grid.three { grid-template-columns: 1fr; }
  .log li { grid-template-columns: 1fr; gap: 2px; }
  .kv th { width: 7.5em; }
}