/* Neuros Group — photogrammetry inspector
   Dark graphite ground (photogrammetry textures read best on it), frosted-glass chrome floating
   over a full-bleed 3D viewport. Amber = selected / active, cyan = candidate. */
:root {
  --ground: #0f1216;
  --glass: rgba(22, 26, 32, 0.72);
  --glass-strong: rgba(22, 26, 32, 0.92);
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #eef1f5;
  --muted: #8f99a6;
  --amber: #f5b731;
  --amber-ink: #1b1400;
  --cyan: #4fd1ff;
  --radius: 14px;
  --radius-sm: 8px;
  --panel-w: 400px;
  --gap: 14px;
  --ui: "Instrument Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --display: "Bricolage Grotesque", "Instrument Sans", Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--ground); color: var(--text);
  font: 13.5px/1.45 var(--ui); font-feature-settings: "tnum"; -webkit-font-smoothing: antialiased; }
button, select, input, output { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
.muted { color: var(--muted); }
.grow { flex: 1; }
.icon { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex: none; }

.glass {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

#app { display: flex; height: 100vh; width: 100vw; overflow: hidden; gap: var(--gap); padding: var(--gap); }
#viewport { position: relative; flex: 1; min-width: 0; border-radius: var(--radius); overflow: hidden; }
#canvas { display: block; width: 100%; height: 100%; }

/* ---------- brand / project switcher ---------- */
#brand { position: absolute; top: var(--gap); left: var(--gap); padding: 14px 16px 12px; min-width: 260px; }
.wordmark { font-family: var(--display); font-weight: 800; font-size: 22px; letter-spacing: -0.02em; line-height: 1; font-variation-settings: "opsz" 96; }
.wordmark span { font-weight: 500; margin-left: 0.28em; color: var(--muted); }
.wordmark.large { font-size: 44px; }
.tagline { color: var(--muted); font-size: 12.5px; margin-top: 4px; }
.project-select { position: relative; display: block; margin-top: 12px; }
.project-select select {
  appearance: none; width: 100%; background: rgba(255,255,255,0.05); border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm); padding: 8px 34px 8px 12px; font-weight: 500; cursor: pointer; color: var(--text);
}
.project-select select:hover { border-color: rgba(255,255,255,0.3); }
.project-select .icon { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.project-select option { background: #1a1f26; }

/* ---------- readout ---------- */
#readout { position: absolute; right: var(--gap); top: var(--gap); display: flex; align-items: center; gap: 8px; padding: 6px 6px 6px 12px; max-width: min(48vw, 640px); }
#hud-status { white-space: pre; overflow: hidden; text-overflow: ellipsis; color: var(--muted); font-variant-numeric: tabular-nums; }
.icon-btn { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; padding: 0; border: 0; border-radius: 8px; background: transparent; color: var(--muted); }
.icon-btn:hover { background: rgba(255,255,255,0.08); color: var(--text); }

/* ---------- bottom toolbar ---------- */
#toolbar { position: absolute; left: 50%; bottom: var(--gap); transform: translateX(-50%); display: flex; align-items: center; gap: 4px; padding: 6px; max-width: calc(100% - 2 * var(--gap)); overflow-x: auto; }
.tool {
  display: inline-flex; align-items: center; gap: 7px; height: 34px; padding: 0 12px; border: 0; border-radius: 9px;
  background: transparent; color: var(--muted); font-weight: 500; white-space: nowrap; position: relative;
}
.tool:hover { background: rgba(255,255,255,0.07); color: var(--text); }
.tool[aria-pressed="true"] { color: var(--text); background: rgba(255,255,255,0.06); }
.tool[aria-pressed="true"]::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 2px; border-radius: 2px; background: var(--amber); }
.tool.icon-only { padding: 0 8px; }
.tool-slider { display: inline-flex; align-items: center; gap: 8px; padding: 0 10px 0 4px; height: 34px; }
.tool-slider output { width: 36px; text-align: right; color: var(--muted); font-size: 12px; }
#toolbar .sep { width: 1px; height: 22px; background: var(--line-strong); margin: 0 4px; }

input[type=range] { -webkit-appearance: none; appearance: none; width: 110px; height: 22px; background: transparent; }
input[type=range]::-webkit-slider-runnable-track { height: 3px; border-radius: 2px; background: linear-gradient(90deg, var(--amber) var(--fill, 75%), rgba(255,255,255,0.18) var(--fill, 75%)); }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 14px; height: 14px; margin-top: -5.5px; border-radius: 50%; background: var(--text); border: 2px solid var(--ground); box-shadow: 0 0 0 1px rgba(255,255,255,0.25); }
input[type=range]::-moz-range-track { height: 3px; border-radius: 2px; background: rgba(255,255,255,0.18); }
input[type=range]::-moz-range-progress { height: 3px; border-radius: 2px; background: var(--amber); }
input[type=range]::-moz-range-thumb { width: 12px; height: 12px; border-radius: 50%; background: var(--text); border: 2px solid var(--ground); }

/* ---------- help ---------- */
#help { position: absolute; right: var(--gap); top: 62px; padding: 12px 14px; }
.help-grid { display: grid; grid-template-columns: auto auto; gap: 3px 14px; }
.help-grid b { font-weight: 600; color: var(--text); font-family: var(--ui); }
.help-grid span { color: var(--muted); }

/* ---------- loading ---------- */
#loading { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px; background: rgba(15, 18, 22, 0.9); color: var(--muted); z-index: 5; }
#loading .bar { width: 220px; height: 3px; border-radius: 2px; background: rgba(255,255,255,0.12); overflow: hidden; }
#loading-bar { height: 100%; width: 0; background: var(--amber); transition: width .2s ease; }
#loading-bar.indeterminate { width: 40%; animation: slide 1.1s ease-in-out infinite alternate; }
@keyframes slide { from { transform: translateX(-100%); } to { transform: translateX(350%); } }
@media (prefers-reduced-motion: reduce) { #loading-bar.indeterminate { animation: none; width: 100%; opacity: .5; } }

/* ---------- side panel ---------- */
#panel { width: var(--panel-w); flex: none; display: flex; flex-direction: column; overflow: hidden; transition: width .18s ease; }
#panel.collapsed { width: 52px; }
#panel.collapsed > :not(.panel-head) { display: none; }
#panel.collapsed .panel-titles { display: none; }
#panel.collapsed #btn-collapse { transform: rotate(180deg); }
.panel-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; padding: 14px 12px 12px 16px; }
#panel-title { font-family: var(--display); font-weight: 700; font-size: 18px; line-height: 1.15; margin: 0; letter-spacing: -0.01em; }
#panel-sub { margin-top: 3px; font-size: 12.5px; }

.photo-box { position: relative; background: #000; aspect-ratio: 3 / 2; overflow: hidden; flex: none; margin: 0 10px; border-radius: 10px; border: 1px solid var(--line); }
#photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; display: block; }
.photo-box:not(.has-photo) #photo, .photo-box:not(.has-photo) .photo-bar { display: none; }
#photo-empty { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--muted); padding: 24px; text-align: center; }
.photo-box.has-photo #photo-empty { display: none; }
.photo-bar { position: absolute; left: 8px; right: 8px; bottom: 8px; display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.chip { display: inline-flex; align-items: center; gap: 6px; height: 28px; padding: 0 10px; border-radius: 7px; background: rgba(12, 14, 18, 0.72); border: 1px solid var(--line); backdrop-filter: blur(8px); font-size: 12.5px; font-weight: 500; color: var(--text); font-variant-numeric: tabular-nums; text-decoration: none; }
.chip-btn { cursor: pointer; }
.chip-btn:hover { background: rgba(245, 183, 49, 0.9); border-color: transparent; color: var(--amber-ink); }
.chip .icon { width: 15px; height: 15px; }

#marker, #lb-marker { position: absolute; width: 24px; height: 24px; margin: -12px 0 0 -12px; border: 2px solid var(--amber); border-radius: 50%; box-shadow: 0 0 0 1px rgba(0,0,0,.7), inset 0 0 0 1px rgba(0,0,0,.7); pointer-events: none; }
#marker::before, #marker::after, #lb-marker::before, #lb-marker::after { content: ""; position: absolute; background: var(--amber); box-shadow: 0 0 0 1px rgba(0,0,0,.6); }
#marker::before, #lb-marker::before { left: 50%; top: -9px; width: 1px; height: 9px; }
#marker::after, #lb-marker::after { top: 50%; left: -9px; height: 1px; width: 9px; }

#thumbs { flex: 1; overflow-y: auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 5px; padding: 12px 10px 10px; align-content: start; }
#thumbs img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; display: block; border-radius: 6px; border: 2px solid transparent; cursor: pointer; opacity: .5; transition: opacity .12s, border-color .12s; }
#thumbs img:hover { opacity: 1; }
#thumbs img.candidate { opacity: .9; border-color: rgba(79, 209, 255, .7); }
#thumbs img.selected { opacity: 1; border-color: var(--amber); }
#thumbs::-webkit-scrollbar { width: 8px; }
#thumbs::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.14); border-radius: 4px; }

/* ---------- lightbox ---------- */
#lightbox { position: fixed; inset: 0; z-index: 20; background: rgba(8, 10, 13, 0.94); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }
#lb-stage { position: absolute; inset: 0; overflow: hidden; cursor: grab; touch-action: none; }
#lb-stage.dragging { cursor: grabbing; }
#lb-wrap { position: absolute; left: 0; top: 0; transform-origin: 0 0; will-change: transform; }
#lb-img { display: block; max-width: none; user-select: none; image-rendering: auto; }
#lb-top { position: absolute; top: var(--gap); left: var(--gap); right: var(--gap); display: flex; align-items: center; gap: 12px; padding: 8px 8px 8px 10px; }
#lb-tools { position: absolute; left: 50%; bottom: var(--gap); transform: translateX(-50%); display: flex; align-items: center; gap: 4px; padding: 6px; }
#lb-zoom { min-width: 52px; text-align: center; font-size: 12.5px; }

[hidden] { display: none !important; }

@media (max-width: 1560px) {
  .tool.secondary span { display: none; }
  .tool.secondary { padding: 0 9px; }
}
@media (max-width: 1100px) {
  :root { --panel-w: 320px; }
  .tool span { display: none; }
  .tool { padding: 0 9px; }
  .tool-slider input[type=range] { width: 80px; }
  #brand { min-width: 200px; }
}
@media (max-width: 640px) {
  #app { flex-direction: column; padding: 8px; gap: 8px; }
  #panel, #panel.collapsed { width: auto; height: 42vh; }
  #readout { display: none; }
}