/* DREAM Robotics site stylesheet. Colours come from colour_scheme.xml
   (regenerate the site after editing it); layout is shared by every robot. */
:root {
  --bg: #0A0B07;
  --panel: #14160F;
  --border: #2A2E1F;
  --accent: #A3E635;
  --accent2: #84CC16;
  --green: #00ff88;
  --text: #F1F5E6;
  --sub: #9DA38C;
  --glow: 163, 230, 53;
  --glow2: 132, 204, 22;
  --mono: ui-monospace, "Cascadia Code", Consolas, "SF Mono", Menlo, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
code, pre, .mono { font-family: var(--mono); }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }

/* nav */
nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(10, 11, 7, .85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 56px; gap: 16px; }
nav .brand { font: 700 18px var(--mono); letter-spacing: 3px; color: var(--accent); }
nav ul { display: flex; gap: 20px; list-style: none; margin: 0; padding: 0; font-size: 14px; }
nav ul a { color: var(--sub); }
nav ul a:hover { color: var(--text); text-decoration: none; }
@media (max-width: 640px) { nav ul li:not(:last-child) { display: none; } }

/* hero */
header.hero { padding: 88px 0 56px; text-align: center; position: relative; overflow: hidden; }
header.hero::before {
  content: ""; position: absolute; inset: -40% 0 auto 0; height: 520px; z-index: -1;
  background: radial-gradient(ellipse at 50% 30%, rgba(var(--glow), .16), transparent 60%),
              radial-gradient(ellipse at 75% 20%, rgba(var(--glow2), .13), transparent 55%);
}
.eyebrow { font: 12px var(--mono); letter-spacing: 3px; color: var(--sub); text-transform: uppercase; }
h1 {
  margin: 12px 0 8px;
  font: 800 clamp(56px, 12vw, 108px)/1 var(--mono);
  letter-spacing: .12em;
  color: var(--accent);
  text-shadow: 0 0 40px rgba(var(--glow), .35);
}
.tagline { font-size: clamp(15px, 2.6vw, 20px); color: var(--text); letter-spacing: .28em; text-transform: uppercase; margin: 0 0 28px; }
.lede { max-width: 660px; margin: 0 auto 32px; color: var(--sub); font-size: 17px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.btn {
  display: inline-block; padding: 11px 22px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--panel); color: var(--text);
  font: 600 14px var(--mono); letter-spacing: .05em; transition: border-color .15s, background .15s;
}
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn.primary { background: rgba(var(--glow), .12); border-color: var(--accent); color: var(--accent); }
.tags { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 36px; }
.tag { font: 12px var(--mono); color: var(--sub); border: 1px solid var(--border); padding: 3px 10px; border-radius: 999px; }

/* photos */
.photos { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-top: 48px; }
.avatar { margin: 48px auto 0; max-width: 440px; background: var(--panel); border: 1px solid rgba(var(--glow), .45); border-radius: 16px; overflow: hidden; box-shadow: 0 0 70px rgba(var(--glow), .22); }
.avatar.wide { max-width: 620px; }
.avatar img { display: block; width: 100%; height: auto; }
.avatar figcaption { font: 12px var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--accent); padding: 12px 16px; }
.photos.single { grid-template-columns: minmax(0, 380px); justify-content: center; }
.screens { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); align-items: start; }
.screens .shot { margin: 0; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 8px; vertical-align: middle; }
.yes { color: var(--green); }
.no { color: #5E6352; }
nav ul a.active { color: var(--accent); }
.spaced { margin-top: 16px; }
.shot.narrow { max-width: 320px; }
.dot.red { background: #e5484d; }
.dot.green { background: #46a758; }
.dot.yellow { background: #f5d90a; }
.dot.blue { background: #3e63dd; }

/* error pages (404 / 500) */
.error { padding: 88px 0 72px; text-align: center; position: relative; overflow: hidden; }
.error::before {
  content: ""; position: absolute; inset: -30% 0 auto 0; height: 520px; z-index: -1;
  background: radial-gradient(ellipse at 50% 30%, rgba(var(--glow), .16), transparent 60%);
}
.error .face { display: block; width: 168px; height: 168px; margin: 0 auto 28px; border-radius: 50%; object-fit: cover;
  border: 2px solid rgba(var(--glow), .55); box-shadow: 0 0 60px rgba(var(--glow), .25); }
.error .code { font: 800 clamp(88px, 20vw, 168px)/1 var(--mono); letter-spacing: .08em; color: var(--accent);
  text-shadow: 0 0 40px rgba(var(--glow), .35); margin: 0 auto 12px; max-width: none; text-align: center; text-indent: .08em; }
.error h1 { font-size: clamp(22px, 4vw, 30px); letter-spacing: normal; text-shadow: none; color: var(--text); margin: 0 0 12px; font-family: var(--sans); font-weight: 700; }
.error p { color: var(--sub); max-width: 520px; margin: 0 auto 28px; }
.error code { word-break: break-all; }
.photos figure { margin: 0; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.photos img { display: block; width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; }
.photos figcaption { font: 12px var(--mono); letter-spacing: .15em; text-transform: uppercase; color: var(--sub); padding: 10px 14px; }
.shot { margin: 24px 0 0; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.shot img { display: block; width: 100%; height: auto; }
.shot figcaption { font: 12px var(--mono); letter-spacing: .15em; text-transform: uppercase; color: var(--sub); padding: 10px 14px; }

/* sections */
section { padding: 56px 0; border-top: 1px solid var(--border); }
h2 { margin: 0 0 6px; font: 700 13px var(--mono); letter-spacing: .3em; text-transform: uppercase; color: var(--accent); }
h3.title { margin: 0 0 24px; font-size: clamp(24px, 4vw, 32px); line-height: 1.25; }
h3.sub { margin: 40px 0 16px; font-size: 22px; line-height: 1.25; }
p { margin: 0 0 16px; }
.muted { color: var(--sub); }

.grid { display: grid; gap: 14px; }
.grid.cols-3 { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.grid.cols-2 { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 18px 20px; }
.card h4 { margin: 0 0 6px; font-size: 16px; }
.card p { margin: 0; color: var(--sub); font-size: 14.5px; }
.card .k { font: 11px var(--mono); letter-spacing: .15em; color: var(--accent); text-transform: uppercase; margin-bottom: 8px; display: block; }

/* hardware list */
.parts { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.parts li {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px 16px; display: flex; align-items: baseline; gap: 12px;
}
.parts .n { font: 12px var(--mono); color: var(--accent); min-width: 22px; }

/* modes */
.mode { border-left: 3px solid var(--accent); }
.mode:nth-child(2) { border-left-color: var(--accent2); }
.mode:nth-child(3) { border-left-color: var(--green); }
.mode:nth-child(4) { border-left-color: var(--sub); }
kbd {
  font: 12px var(--mono); background: var(--bg); border: 1px solid var(--border);
  border-bottom-width: 2px; border-radius: 5px; padding: 1px 6px; color: var(--text);
}

/* code */
pre {
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px 18px; overflow-x: auto; font-size: 13.5px; line-height: 1.6; margin: 0 0 16px;
}
pre .c { color: #5E6352; }
pre .p { color: var(--accent); user-select: none; }
:not(pre) > code { background: var(--panel); border: 1px solid var(--border); border-radius: 4px; padding: 1px 6px; font-size: .9em; }

/* steps */
ol.steps { margin: 0 0 16px; padding-left: 22px; }
ol.steps li { margin-bottom: 10px; }
ol.steps li::marker { color: var(--accent); font-family: var(--mono); }

/* callout */
.note { background: rgba(var(--glow), .07); border: 1px solid rgba(var(--glow), .35); border-radius: 10px; padding: 14px 18px; margin: 16px 0 0; font-size: 14.5px; }
.note strong { color: var(--accent); }

/* table */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th, td { text-align: left; padding: 11px 16px; border-bottom: 1px solid var(--border); }
th { font: 11px var(--mono); letter-spacing: .15em; text-transform: uppercase; color: var(--sub); background: var(--panel); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.mono { color: var(--accent); font-size: 13px; white-space: nowrap; }

/* related */
.related { display: flex; flex-wrap: wrap; gap: 10px; }
.related a { font: 13px var(--mono); border: 1px solid var(--border); background: var(--panel); border-radius: 8px; padding: 8px 14px; color: var(--text); }
.related a:hover { border-color: var(--accent); text-decoration: none; }

/* footer */
footer { border-top: 1px solid var(--border); padding: 48px 0 56px; text-align: center; color: var(--sub); font-size: 14px; }
footer .logos { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 28px; margin: 24px 0; }
footer .logos img { display: block; height: auto; max-width: 100%; }
footer .links { display: flex; flex-wrap: wrap; gap: 8px 22px; justify-content: center; margin-bottom: 8px; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn { transition: none; } }

/* --- Memory constellation (memgraph.js) --- */
header.hero > .wrap { position: relative; z-index: 1; }
#memgraph {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: 0; display: block;
}
.memgraph-tip {
  position: fixed; z-index: 1000; pointer-events: none;
  max-width: 260px; padding: 10px 12px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: 0 8px 30px rgba(0,0,0,.45);
  font: 13px/1.45 var(--mono); color: var(--text);
}
.memgraph-tip .k {
  display: block; font-size: 10px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 4px;
}
.memgraph-tip strong { display: block; font-size: 14px; margin-bottom: 3px; }
.memgraph-tip .t { color: #b9c3a6; }