/* LABS Winterserver — site styles. No inline styles anywhere (strict CSP). */

@font-face { font-family: "VT323"; src: url("../fonts/vt323-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("../fonts/ibm-plex-mono-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("../fonts/ibm-plex-mono-500.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("../fonts/ibm-plex-mono-600.woff2") format("woff2"); font-weight: 600; font-display: swap; }

:root {
  --bg: #020718;
  --bg-grid: #0B1132;
  --panel: #070C26;
  --bar: #0E1336;
  --line: #C9BEF2;      /* window outlines, inverted labels */
  --line-dim: #2A2652;
  --shadow: #2E1660;
  --violet: #6A2BBF;
  --purple: #9B30D9;
  --magenta: #B83ADB;
  --yellow: #FECC69;
  --text: #E6E2F3;
  --muted: #B9B3D3;
  --faint: #8E87B0;
  --pixel: "VT323", ui-monospace, monospace;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  color: var(--text);
  font: 400 15px/1.65 var(--mono);
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: #D7C8FF; }
a:hover { color: var(--yellow); }
:focus-visible { outline: 2px solid var(--yellow); outline-offset: 2px; }
code { font-family: var(--mono); }
.muted { color: var(--muted); }
.accent { color: var(--yellow); }

.skip { position: absolute; left: -9999px; top: 8px; background: var(--yellow); color: var(--bg); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ---------- menu bar & footer ---------- */
.menubar { background: var(--bar); border-bottom: 2px solid var(--line); }
.menubar-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 4px 24px; min-height: 56px; }
.brand { display: flex; align-items: center; gap: 10px; padding: 8px 0; color: var(--text); text-decoration: none; font: 24px/1 var(--pixel); letter-spacing: 0.08em; }
.menubar nav { display: flex; flex-wrap: wrap; gap: 2px; }
.menu { color: var(--text); text-decoration: none; padding: 8px 12px; font: 22px/1.2 var(--pixel); }
.menu:hover, .menu:focus-visible { background: var(--line); color: var(--bg); }
.menu-accent { color: var(--yellow); }

.footbar { margin-top: auto; background: var(--bar); border-top: 2px solid var(--line); }
.footbar-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; padding-top: 16px; padding-bottom: 16px; color: var(--muted); font: 20px/1.3 var(--pixel); }

.main { padding-top: 56px; padding-bottom: 88px; display: flex; flex-direction: column; gap: 48px; }

/* ---------- windows ---------- */
.win { border: 2px solid var(--line); background: var(--panel); box-shadow: 6px 6px 0 var(--shadow); }
.win-body { padding: 24px; margin: 0; }

.titlebar { display: flex; align-items: center; gap: 10px; min-height: 34px; padding: 0 8px; border-bottom: 2px solid var(--line); }
.tb-box { width: 14px; height: 14px; border: 2px solid var(--line); flex: none; }
.tb-stripes { flex: 1; height: 14px; min-width: 16px; background-image: repeating-linear-gradient(to bottom, var(--line) 0 2px, transparent 2px 4px); }
.tb-title { margin: 0; padding: 0 6px; font: 400 22px/1 var(--pixel); letter-spacing: 0.02em; text-align: center; }
.titlebar-solid { min-height: 30px; }
.titlebar-solid .tb-box { width: 12px; height: 12px; }
.titlebar-solid .tb-title { font-size: 20px; padding: 0; text-align: left; }
.step-1 .titlebar { background: var(--shadow); }
.step-2 .titlebar { background: #4A1F8F; }
.step-3 .titlebar { background: var(--violet); }

/* ---------- hero ---------- */
.hero { padding: 28px 24px 32px; display: flex; flex-direction: column; gap: 22px; }
.hero h1 { margin: 0; font: 400 56px/1 var(--pixel); letter-spacing: 0.02em; }
.cursor { display: inline-block; width: 0.5em; height: 0.8em; margin-left: 8px; background: var(--magenta); vertical-align: -0.05em; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }
.lead { margin: 0; max-width: 560px; }

.facts { margin: 0; display: grid; grid-template-columns: minmax(110px, max-content) minmax(0, 1fr); gap: 12px 20px; align-items: center; }
.facts dd { margin: 0; }
.label { justify-self: start; padding: 0 8px; background: var(--line); color: var(--bg); font: 20px/1.4 var(--pixel); }
.address { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.address code { font-size: 16px; color: var(--yellow); user-select: all; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 16px;
  font: 400 20px/1 var(--pixel); color: var(--text); text-decoration: none;
  background: var(--panel); border: 2px solid var(--line); box-shadow: 3px 3px 0 var(--shadow);
  cursor: pointer;
}
.btn:hover, .btn[aria-pressed="true"] { background: var(--line); color: var(--bg); }
.btn:active { box-shadow: none; transform: translate(3px, 3px); }
.btn-primary { background: var(--yellow); border-color: var(--yellow); color: var(--bg); box-shadow: 3px 3px 0 var(--violet); font-size: 22px; }
.btn-primary:hover { background: #FFE0A0; border-color: #FFE0A0; color: var(--bg); }
.actions { display: flex; flex-wrap: wrap; gap: 14px; }
.actions .btn { font-size: 22px; padding: 0 18px; }

/* ---------- sections ---------- */
.section { display: flex; flex-direction: column; gap: 20px; }
.section-title { margin: 0; font: 400 34px/1.2 var(--pixel); letter-spacing: 0.04em; }
.section-title .muted { color: var(--faint); font-size: 24px; }

.steps { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
.step .win-body { padding: 20px; }

.split { display: flex; flex-wrap: wrap; }
.split-side { flex: 1 1 320px; min-width: 0; padding: 24px; display: flex; flex-direction: column; gap: 20px; border-right: 2px solid var(--line-dim); }
.split-side p { margin: 0; }
.small { font-size: 13px; }
.split-main { flex: 2 1 460px; min-width: 0; }
.table-scroll { overflow-x: auto; }

.mods { width: 100%; border-collapse: collapse; font-size: 14px; }
.mods th { text-align: left; font: 400 20px/1.3 var(--pixel); color: var(--bg); background: var(--line); padding: 4px 20px; }
.mods td { padding: 12px 20px; border-bottom: 1px dashed #3A2F6E; }
.mods tr:last-child td { border-bottom: 0; }

/* ---------- heatmap ---------- */
.map-body { display: flex; flex-direction: column; gap: 20px; }
.map-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.map-head p { margin: 0; max-width: 640px; }
.segmented { display: flex; gap: 8px; }
.segmented[hidden] { display: none; }
.map-frame { border: 2px solid var(--line-dim); background: var(--bg); padding: 12px; overflow-x: auto; }
.heatmap { min-width: 560px; }
.heatmap svg { display: block; width: 100%; height: auto; }
.heatmap circle { transition: r 0.25s ease; }
@media (prefers-reduced-motion: reduce) { .heatmap circle { transition: none; } }
.map-foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; color: var(--faint); font: 20px/1.3 var(--pixel); }
.legend { display: flex; align-items: center; gap: 6px; }
.legend span:first-child { margin-right: 6px; }
.legend span:last-child { margin-left: 6px; }
.legend i { display: block; border-radius: 50%; }
.legend .d1 { width: 4px; height: 4px; background: var(--shadow); }
.legend .d2 { width: 7px; height: 7px; background: var(--violet); }
.legend .d3 { width: 10px; height: 10px; background: var(--magenta); }
.legend .d4 { width: 13px; height: 13px; background: var(--yellow); }

/* ---------- prose pages ---------- */
.titlebar h1.tb-title { font-size: 22px; }
.prose { max-width: 760px; }
.prose h2 { font: 400 28px/1.2 var(--pixel); margin: 28px 0 8px; }
.prose h2:first-child { margin-top: 0; }
.prose p { color: var(--muted); }
.prose strong { color: var(--text); font-weight: 600; }

@media (max-width: 560px) {
  .hero h1 { font-size: 42px; }
  .facts { grid-template-columns: 1fr; gap: 6px; }
  .facts dd { margin-bottom: 10px; }
  .split-side { border-right: 0; border-bottom: 2px solid var(--line-dim); }
}