:root {
  color-scheme: dark;
  --bg: #080b0e;
  --panel: #0c1115;
  --panel-2: #11181e;
  --line: rgba(186, 217, 229, 0.14);
  --line-strong: rgba(186, 217, 229, 0.28);
  --text: #e6f0f2;
  --muted: #78909a;
  --accent: #61e8ff;
  --warning: #ffc45c;
  --danger: #ff6f91;
  --source: #6ce5ff;
  --proxy: #ffc45c;
  --sidebar-width: 390px;
}

* { box-sizing: border-box; }

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: "SFMono-Regular", "Roboto Mono", "Noto Sans JP", ui-monospace, monospace;
}

button,
input { font: inherit; }

button { color: inherit; }

.app-shell {
  width: 100%;
  height: 100dvh;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  grid-template-rows: 56px minmax(0, 1fr);
  overflow: hidden;
  background: var(--bg);
}

.topbar {
  grid-column: 1 / -1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line-strong);
  background: rgba(8, 11, 14, 0.96);
  z-index: 10;
}

.brand { display: flex; align-items: center; gap: 11px; min-width: 0; }
.brand-mark { width: 18px; height: 18px; border: 1px solid var(--accent); border-radius: 50%; box-shadow: inset 0 0 0 5px rgba(97, 232, 255, 0.12); flex: 0 0 auto; }
.brand strong { display: block; font-size: 12px; letter-spacing: 0.17em; }
.brand span { display: block; margin-top: 3px; color: var(--muted); font-size: 8px; letter-spacing: 0.09em; white-space: nowrap; }

.top-status { display: flex; gap: 18px; color: #9db0b8; font-size: 8px; letter-spacing: 0.12em; white-space: nowrap; }
.top-status span { display: inline-flex; align-items: center; gap: 6px; }
.top-status a { color: var(--accent); text-decoration: none; }
.top-status a:hover,
.top-status a:focus-visible { text-decoration: underline; outline: none; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.status-dot--source { background: var(--source); box-shadow: 0 0 8px var(--source); }
.status-dot--proxy { border: 1px solid var(--proxy); }
.status-dot--open { background: var(--danger); }

.sidebar {
  grid-column: 1;
  grid-row: 2;
  min-height: 0;
  overflow: hidden;
  border-right: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(16, 23, 28, 0.98), rgba(9, 13, 17, 0.98));
  z-index: 4;
}

.sidebar-scroll {
  height: 100%;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 20px 18px 34px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.eyebrow,
.micro-label { margin: 0; color: var(--muted); font-size: 8px; letter-spacing: 0.16em; }

.room-buttons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-top: 8px; }
.room-button {
  min-height: 38px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.018);
  font-size: 14px;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease, color 150ms ease;
}
.room-button:hover,
.room-button:focus-visible { border-color: var(--accent); outline: none; }
.room-button.is-active { background: var(--accent); border-color: var(--accent); color: #071014; font-weight: 700; }

.room-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; margin-top: 24px; }
.room-heading h1 { margin: 4px 0 0; font-size: clamp(22px, 2.3vw, 31px); font-weight: 520; letter-spacing: 0.03em; }
.placement-badge { padding: 5px 7px; border: 1px solid rgba(255, 196, 92, 0.42); color: var(--warning); font-size: 7px; letter-spacing: 0.11em; white-space: nowrap; }
.room-statement { min-height: 54px; margin: 12px 0 0; color: #aec0c7; font: 12px/1.7 "Noto Sans JP", system-ui, sans-serif; }

.panel-tabs { display: grid; grid-template-columns: repeat(3, 1fr); margin: 22px -18px 0; border-block: 1px solid var(--line); }
.panel-tab { min-height: 38px; border: 0; border-right: 1px solid var(--line); background: transparent; color: var(--muted); font-size: 7px; letter-spacing: 0.08em; cursor: pointer; }
.panel-tab:last-child { border-right: 0; }
.panel-tab.is-active { color: var(--text); box-shadow: inset 0 -2px 0 var(--accent); background: rgba(255,255,255,.02); }
.tab-panel { display: none; padding-top: 18px; }
.tab-panel.is-active { display: block; }

.metric-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.metric { min-height: 63px; padding: 10px; background: var(--panel); }
.metric span { display: block; color: var(--muted); font-size: 7px; letter-spacing: .12em; }
.metric strong { display: block; margin-top: 8px; font-size: 10px; line-height: 1.35; font-weight: 550; }

.control-block { margin-top: 22px; }
.section-title { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: 19px 0 9px; color: #b5c4ca; font-size: 8px; letter-spacing: .15em; }

.pattern-list { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.pattern-button { min-height: 34px; padding: 7px 8px; border: 1px solid var(--line); background: var(--panel); color: #8ea3ab; text-align: left; font-size: 8px; line-height: 1.35; cursor: pointer; }
.pattern-button.is-active { border-color: var(--accent); color: var(--text); background: color-mix(in srgb, var(--accent) 9%, var(--panel)); }

.layer-list { display: grid; gap: 5px; }
.layer-toggle { min-height: 31px; display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 0 9px; border: 1px solid var(--line); background: rgba(0,0,0,.11); color: #9fb0b7; cursor: pointer; }
.layer-toggle span { font-size: 8px; letter-spacing: .08em; }
.layer-toggle i { width: 23px; height: 12px; border: 1px solid var(--line-strong); border-radius: 7px; position: relative; }
.layer-toggle i::after { content: ""; position: absolute; width: 6px; height: 6px; top: 2px; left: 3px; border-radius: 50%; background: var(--muted); transition: transform 150ms ease, background 150ms ease; }
.layer-toggle.is-active i::after { transform: translateX(9px); background: var(--accent); box-shadow: 0 0 6px var(--accent); }

.equipment-list { border-top: 1px solid var(--line); }
.equipment-row { display: grid; grid-template-columns: minmax(0, 1fr) 38px 66px; align-items: center; gap: 7px; min-height: 33px; border-bottom: 1px solid var(--line); font-size: 8px; }
.equipment-row strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; }
.equipment-row .qty { color: var(--text); text-align: right; }
.equipment-row .status { justify-self: end; padding: 3px 5px; border: 1px solid var(--line-strong); color: var(--muted); font-size: 6px; letter-spacing: .08em; text-transform: uppercase; }
.equipment-row .status--confirmed,
.equipment-row .status--confirmed-count { border-color: rgba(124,255,178,.36); color: #7cffb2; }
.equipment-row .status--conflict { border-color: rgba(255,111,145,.55); color: #ff8aa7; }
.equipment-row .status--tbd,
.equipment-row .status--tbc { border-color: rgba(255,196,92,.42); color: #ffc45c; }

.diagnostic-callout { padding: 12px; border-left: 2px solid var(--warning); background: rgba(255, 196, 92, .06); }
.diagnostic-callout strong { font-size: 9px; letter-spacing: .12em; }
.diagnostic-callout p { margin: 7px 0 0; color: #b8b1a3; font: 11px/1.65 "Noto Sans JP", system-ui, sans-serif; }
.issue-list { margin: 0; padding: 0; list-style: none; counter-reset: item; }
.issue-list li { counter-increment: item; display: grid; grid-template-columns: 24px 1fr; gap: 8px; padding: 9px 0; border-bottom: 1px solid var(--line); color: #c4b4b9; font-size: 9px; line-height: 1.55; }
.issue-list li::before { content: counter(item, decimal-leading-zero); color: var(--danger); }
.issue-list--gaps li { color: #aebcc1; }
.issue-list--gaps li::before { color: var(--warning); }
.layout-result { margin-top: 18px; padding: 10px; border: 1px solid var(--line); color: var(--muted); font-size: 8px; line-height: 1.5; }
.layout-result.is-pass { border-color: rgba(124,255,178,.34); color: #7cffb2; }

.diagram-card { margin: 0; border: 1px solid var(--line); background: #e9eceb; }
.diagram-card img { display: block; width: 100%; aspect-ratio: 16/10; object-fit: contain; }
.diagram-card figcaption { padding: 7px 9px; background: var(--panel); color: var(--muted); font-size: 7px; letter-spacing: .08em; }
.source-list { margin: 0; padding: 0; list-style: none; }
.source-list li { padding: 9px 0; border-bottom: 1px solid var(--line); color: #aab9bf; font-size: 9px; line-height: 1.45; }
.source-note { display: grid; gap: 7px; margin-top: 18px; padding: 11px; border: 1px solid var(--line); background: var(--panel); }
.source-note strong { font-size: 8px; letter-spacing: .13em; }
.source-note span { color: var(--accent); font-size: 9px; }
.source-note small { color: var(--muted); font-size: 7px; line-height: 1.5; }

.viewport { grid-column: 2; grid-row: 2; min-width: 0; min-height: 0; position: relative; overflow: hidden; background: radial-gradient(circle at 50% 45%, #14202a 0%, #080b0e 69%); }
#scene-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }
.viewport-vignette { position: absolute; inset: 0; pointer-events: none; background: linear-gradient(180deg, rgba(8,11,14,.42), transparent 18%, transparent 76%, rgba(8,11,14,.68)), radial-gradient(circle, transparent 52%, rgba(0,0,0,.45)); }
.safe-frame { position: absolute; inset: 54px 48px 72px; border: 1px solid rgba(173,220,231,.10); pointer-events: none; }
.safe-frame::before,
.safe-frame::after { content: ""; position: absolute; width: 15px; height: 15px; border-color: var(--accent); opacity: .45; }
.safe-frame::before { top: -1px; left: -1px; border-top: 1px solid; border-left: 1px solid; }
.safe-frame::after { right: -1px; bottom: -1px; border-right: 1px solid; border-bottom: 1px solid; }

.viewport-meta { position: absolute; top: 18px; left: 22px; display: flex; flex-direction: column; gap: 5px; pointer-events: none; }
.viewport-meta span:first-child { color: var(--accent); font-size: 11px; letter-spacing: .17em; }
.viewport-meta span:last-child { color: var(--muted); font-size: 8px; letter-spacing: .11em; }
.test-monitor { position: absolute; top: 68px; left: 22px; width: min(310px, calc(100% - 44px)); padding: 10px 11px; border: 1px solid rgba(230,240,242,.22); background: rgba(7,11,14,.84); backdrop-filter: blur(10px); box-shadow: 0 12px 32px rgba(0,0,0,.24); pointer-events: none; }
.test-monitor[hidden] { display: none; }
.test-monitor__title { display: flex; align-items: center; gap: 7px; margin-bottom: 9px; color: #e6f0f2; font-size: 8px; letter-spacing: .13em; }
.test-monitor__title > i { width: 6px; height: 6px; border-radius: 50%; background: #fff; box-shadow: 0 0 9px #fff; animation: test-status-pulse 1.1s ease-in-out infinite; }
.test-monitor__row { min-height: 22px; display: flex; align-items: center; justify-content: space-between; gap: 12px; border-top: 1px solid var(--line); font-size: 7px; letter-spacing: .08em; }
.test-monitor__row span { display: inline-flex; align-items: center; gap: 6px; color: #9fb0b7; }
.test-monitor__row strong { color: var(--text); font-size: 7px; font-weight: 550; white-space: nowrap; }
.test-monitor small { display: block; margin-top: 7px; color: var(--muted); font-size: 6px; line-height: 1.45; letter-spacing: .05em; }
.test-swatch { width: 11px; height: 6px; display: inline-block; border: 1px solid rgba(255,255,255,.55); }
.test-swatch--projection { background: linear-gradient(90deg, #ff3562 0 25%, #ffdf3c 25% 50%, #27e884 50% 75%, #38a8ff 75%); }
.test-swatch--led { border-radius: 50%; background: #ffc85a; box-shadow: 0 0 8px #ffc85a; }
@keyframes test-status-pulse { 50% { opacity: .35; transform: scale(.72); } }
.model-state { position: absolute; top: 19px; right: 21px; display: flex; align-items: center; gap: 7px; color: #8ca0a8; font-size: 7px; letter-spacing: .12em; pointer-events: none; }
.model-state i { width: 6px; height: 6px; border-radius: 50%; background: var(--warning); box-shadow: 0 0 8px var(--warning); }
.model-state.is-ready i { background: #7cffb2; box-shadow: 0 0 8px #7cffb2; }

.camera-toolbar { position: absolute; left: 50%; bottom: 20px; transform: translateX(-50%); display: flex; align-items: center; padding: 4px; border: 1px solid var(--line-strong); background: rgba(9,14,18,.86); backdrop-filter: blur(10px); }
.camera-toolbar > span { padding: 0 9px; color: var(--muted); font-size: 7px; letter-spacing: .12em; }
.camera-button { min-height: 29px; padding: 0 9px; border: 0; border-left: 1px solid var(--line); background: transparent; color: #7f949c; font-size: 7px; cursor: pointer; }
.camera-button:hover,
.camera-button:focus-visible { color: var(--text); outline: 1px solid var(--accent); outline-offset: -2px; }
.camera-button.is-active { color: var(--accent); background: rgba(255,255,255,.035); }

.scene-legend { position: absolute; right: 20px; bottom: 23px; display: grid; gap: 6px; color: var(--muted); font-size: 7px; letter-spacing: .08em; pointer-events: none; }
.scene-legend span { display: flex; align-items: center; gap: 6px; }
.legend-line { width: 16px; height: 1px; background: var(--source); }
.legend-line--proxy { background: repeating-linear-gradient(90deg, var(--proxy) 0 3px, transparent 3px 5px); }
.legend-line--coverage { background: rgba(255,111,216,.6); box-shadow: 0 0 5px rgba(255,111,216,.8); }

.marker-layer { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.scene-marker { position: absolute; transform: translate(-50%, -50%); display: flex; align-items: center; gap: 5px; padding: 4px 6px; border: 1px solid rgba(255,196,92,.45); background: rgba(8,11,14,.82); color: #e6c686; font-size: 7px; letter-spacing: .08em; white-space: nowrap; }
.scene-marker::before { content: ""; width: 4px; height: 4px; border: 1px solid var(--proxy); border-radius: 50%; }

.loading-screen { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 9px; background: rgba(8,11,14,.76); backdrop-filter: blur(4px); transition: opacity 250ms ease, visibility 250ms ease; }
.loading-screen.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loading-screen strong { font-size: 9px; letter-spacing: .18em; }
.loading-screen small { color: var(--muted); font-size: 7px; letter-spacing: .08em; }
.loading-ring { width: 30px; height: 30px; border: 1px solid var(--line-strong); border-top-color: var(--accent); border-radius: 50%; animation: rotate 900ms linear infinite; }
@keyframes rotate { to { transform: rotate(360deg); } }

.webgl-error { position: absolute; inset: 0; place-content: center; padding: 40px; text-align: center; background: #080b0e; }
.webgl-error:not([hidden]) { display: grid; }
.webgl-error strong { color: var(--danger); }
.webgl-error p { color: var(--muted); font: 12px/1.6 system-ui, sans-serif; }

@media (max-width: 920px) {
  :root { --sidebar-width: 340px; }
  .top-status span:nth-child(2) { display: none; }
  .safe-frame { inset: 46px 28px 70px; }
  .scene-legend { display: none; }
}

@media (max-width: 700px) {
  .app-shell { grid-template-columns: 1fr; grid-template-rows: 52px minmax(250px, 52vh) minmax(0, 1fr); }
  .topbar { grid-column: 1; grid-row: 1; padding-inline: 12px; }
  .brand span { display: none; }
  .top-status span:not(:first-child),
  .top-status a { display: none; }
  .viewport { grid-column: 1; grid-row: 2; border-bottom: 1px solid var(--line-strong); }
  .sidebar { grid-column: 1; grid-row: 3; border-right: 0; }
  .sidebar-scroll { padding-top: 13px; }
  .room-nav { display: flex; align-items: center; gap: 12px; }
  .room-nav .eyebrow { flex: 0 0 auto; }
  .room-buttons { width: 180px; margin: 0; }
  .room-button { min-height: 32px; }
  .room-heading { margin-top: 15px; }
  .room-statement { min-height: 0; }
  .panel-tabs { margin-top: 14px; }
  .camera-toolbar { bottom: 10px; }
  .camera-toolbar > span,
  .camera-button[data-camera="fit"] { display: none; }
  .camera-button { padding-inline: 8px; }
  .safe-frame { inset: 43px 18px 56px; }
  .test-monitor { top: 64px; left: 14px; width: min(270px, calc(100% - 28px)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}