/* ============================================================
   myfloorplan — architectural drafting-studio UI
   ============================================================ */
:root {
  /* graphite chrome */
  --ink-900: #0d1014;
  --ink-800: #14181f;
  --ink-700: #1b212b;
  --ink-600: #232b37;
  --ink-500: #313a48;
  --line:    #2c3543;
  --line-soft: #222a35;

  /* text */
  --fg:      #e9edf3;
  --fg-dim:  #9aa6b6;
  --fg-mute: #66707f;

  /* drafting paper canvas */
  --paper:   #f4f1ea;
  --paper-edge: #e2ddd1;
  --blueprint: #b9c4d6;     /* faint grid lines */
  --blueprint-strong: #9aa9c2;

  /* accents */
  --amber:   #ff7a1a;
  --amber-deep: #e2620a;
  --amber-soft: rgba(255,122,26,0.14);
  --cyan:    #2fb6c4;

  --danger:  #ef5b5b;

  --r-sm: 6px;
  --r-md: 9px;
  --r-lg: 14px;

  --shadow-panel: 0 1px 0 rgba(255,255,255,0.03) inset, 0 14px 40px -18px rgba(0,0,0,0.7);
  --topbar-h: 56px;
  --panel-w: 268px;

  --font-display: "Big Shoulders Display", "Archivo", sans-serif;
  --font-ui: "Archivo", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }

body {
  font-family: var(--font-ui);
  color: var(--fg);
  background: var(--ink-900);
  overflow: hidden;
  display: grid;
  grid-template-columns: var(--panel-w) 1fr var(--panel-w);
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-areas:
    "top top top"
    "left center right";
  -webkit-font-smoothing: antialiased;
}

/* ===================== Top bar ===================== */
.topbar {
  grid-area: top;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 16px;
  background: linear-gradient(180deg, var(--ink-700), var(--ink-800));
  border-bottom: 1px solid var(--line);
  z-index: 20;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand__mark {
  width: 26px; height: 26px; border-radius: 7px;
  background:
    linear-gradient(135deg, var(--amber), var(--amber-deep));
  position: relative; flex: none;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.08), 0 4px 14px -4px var(--amber);
}
.brand__mark::after {
  content: ""; position: absolute; inset: 6px;
  border: 1.5px solid rgba(0,0,0,0.55);
  border-right: none; border-bottom: none;
}
.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.5px;
  line-height: 1;
  text-transform: lowercase;
}
.brand__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-mute);
  letter-spacing: 0.5px;
  border-left: 1px solid var(--line);
  padding-left: 10px;
}
.topbar__spacer { flex: 1; }
.topbar__group { display: flex; align-items: center; gap: 6px; }

.proj-name {
  background: var(--ink-900);
  border: 1px solid var(--line);
  color: var(--fg);
  font-family: var(--font-ui);
  font-size: 13px;
  padding: 7px 11px;
  border-radius: var(--r-sm);
  width: 190px;
  transition: border-color .15s, box-shadow .15s;
}
.proj-name:focus { outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px var(--amber-soft); }

/* segmented 2D / 3D */
.seg {
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 3px;
  gap: 2px;
}
.seg__btn {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.4px;
  color: var(--fg-dim);
  background: transparent;
  border: none;
  padding: 6px 13px;
  border-radius: 4px;
  cursor: pointer;
  transition: all .15s;
}
.seg__btn:hover { color: var(--fg); }
.seg__btn.is-active {
  color: var(--ink-900);
  background: linear-gradient(180deg, var(--amber), var(--amber-deep));
  font-weight: 600;
}

.icon-btn, .ghost-btn, .hud-btn, .add-btn, .mini-btn, .seg__btn { font-family: var(--font-ui); }

.icon-btn {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: var(--ink-900);
  border: 1px solid var(--line);
  color: var(--fg-dim);
  border-radius: var(--r-sm);
  font-size: 17px;
  cursor: pointer;
  transition: all .12s;
}
.icon-btn:hover:not(:disabled) { color: var(--fg); border-color: var(--ink-500); }
.icon-btn:disabled { opacity: 0.35; cursor: default; }

.ghost-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--fg-dim);
  padding: 7px 12px;
  font-size: 12.5px;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all .12s;
}
.ghost-btn:hover { color: var(--fg); border-color: var(--ink-500); background: var(--ink-700); }
.ghost-btn--block { width: 100%; }

/* ===================== Panels ===================== */
.panel {
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}
.panel--left { grid-area: left; }
.panel--right { grid-area: right; border-right: none; border-left: 1px solid var(--line); }

.panel__head {
  display: flex; align-items: baseline; gap: 8px;
  padding: 16px 16px 10px;
}
.panel__head h2, .insp-section h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin: 0;
  color: var(--fg);
}
.hint { font-family: var(--font-mono); font-size: 10px; color: var(--fg-mute); }

.catalog-tools { padding: 0 16px 10px; display: flex; flex-direction: column; gap: 8px; }
.search {
  width: 100%;
  background: var(--ink-900);
  border: 1px solid var(--line);
  color: var(--fg);
  padding: 8px 11px;
  border-radius: var(--r-sm);
  font-size: 13px;
  font-family: var(--font-ui);
}
.search:focus { outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px var(--amber-soft); }

.add-row { display: flex; gap: 6px; }
.add-btn {
  flex: 1;
  background: var(--ink-700);
  border: 1px dashed var(--line);
  color: var(--fg-dim);
  padding: 8px 6px;
  font-size: 11.5px;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all .12s;
  white-space: nowrap;
}
.add-btn:hover { color: var(--amber); border-color: var(--amber); background: var(--amber-soft); }

.cat-chips {
  display: flex; flex-wrap: wrap; gap: 5px;
  padding: 0 16px 10px;
  border-bottom: 1px solid var(--line-soft);
}
.chip {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.3px;
  color: var(--fg-dim);
  background: var(--ink-900);
  border: 1px solid var(--line);
  padding: 4px 9px;
  border-radius: 20px;
  cursor: pointer;
  transition: all .12s;
}
.chip:hover { color: var(--fg); }
.chip.is-active { color: var(--ink-900); background: var(--fg-dim); border-color: var(--fg-dim); font-weight: 600; }

.catalog-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px 12px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  align-content: start;
}
.cat-item {
  background: var(--ink-700);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 12px 8px 9px;
  text-align: center;
  cursor: grab;
  transition: transform .1s, border-color .12s, background .12s;
  user-select: none;
}
.cat-item:hover { border-color: var(--amber); background: var(--ink-600); transform: translateY(-2px); }
.cat-item:active { cursor: grabbing; transform: scale(0.97); }
.cat-item__icon { font-size: 26px; line-height: 1; display: block; margin-bottom: 6px; filter: saturate(1.1); }
.cat-item__name { font-size: 11.5px; color: var(--fg); display: block; line-height: 1.2; }
.cat-item__dim { font-family: var(--font-mono); font-size: 9.5px; color: var(--fg-mute); margin-top: 2px; display: block; }
.cat-empty { grid-column: 1 / -1; color: var(--fg-mute); font-size: 12px; text-align: center; padding: 20px 0; }

/* ===================== Inspector ===================== */
.inspector { overflow-y: auto; padding: 6px 0 30px; }
.insp-section { padding: 14px 16px; border-bottom: 1px solid var(--line-soft); }
.insp-section--muted h2 { color: var(--fg-dim); }

.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin-top: 10px; }
.field-grid--2 { grid-template-columns: 1fr 1fr; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field--full { margin-top: 10px; }
.field > span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.4px;
  color: var(--fg-mute);
  text-transform: uppercase;
}
.field input, .field select {
  background: var(--ink-900);
  border: 1px solid var(--line);
  color: var(--fg);
  padding: 7px 9px;
  border-radius: var(--r-sm);
  font-size: 13px;
  font-family: var(--font-mono);
  width: 100%;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--amber); box-shadow: 0 0 0 3px var(--amber-soft); }
.field--color input[type=color] { padding: 3px; height: 33px; cursor: pointer; }

.btn-row { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.mini-btn {
  flex: 1;
  min-width: 60px;
  background: var(--ink-700);
  border: 1px solid var(--line);
  color: var(--fg-dim);
  padding: 7px 4px;
  font-size: 11.5px;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all .12s;
}
.mini-btn:hover { color: var(--fg); border-color: var(--ink-500); }
.mini-btn--danger:hover { color: #fff; background: var(--danger); border-color: var(--danger); }

.stat { font-family: var(--font-mono); font-size: 12px; color: var(--fg-dim); margin: 8px 0 12px; }
.stat span { color: var(--amber); }

/* ===================== Stage (2D) ===================== */
.stage-wrap { grid-area: center; position: relative; overflow: hidden; background: var(--ink-900); }

.viewport {
  position: absolute; inset: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 40%, #11151b, #0a0c10 80%);
  cursor: grab;
  touch-action: none;
}
.viewport.is-panning { cursor: grabbing; }
.viewport.is-dragging-item { cursor: grabbing; }

.stage { position: absolute; top: 0; left: 0; transform-origin: 0 0; }

.room {
  position: absolute;
  background: var(--paper);
  box-shadow:
    0 0 0 2px var(--paper-edge),
    0 40px 90px -30px rgba(0,0,0,0.85);
}
.room__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--blueprint) 1px, transparent 1px),
    linear-gradient(90deg, var(--blueprint) 1px, transparent 1px),
    linear-gradient(var(--blueprint-strong) 1px, transparent 1px),
    linear-gradient(90deg, var(--blueprint-strong) 1px, transparent 1px);
  background-size:
    var(--grid) var(--grid),
    var(--grid) var(--grid),
    var(--grid-major) var(--grid-major),
    var(--grid-major) var(--grid-major);
  opacity: 0.55;
  pointer-events: none;
}
.room__floor {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  pointer-events: none;
  opacity: 0.9;
}
.item-layer, .dim-layer { position: absolute; inset: 0; }
.dim-layer { pointer-events: none; }

/* item */
.item {
  position: absolute;
  transform: translate(-50%, -50%) rotate(var(--rot, 0deg));
  background: var(--c, #cbd2dc);
  border: 1.5px solid rgba(0,0,0,0.35);
  border-radius: 3px;
  display: grid;
  place-items: center;
  cursor: move;
  box-shadow: 0 2px 8px -3px rgba(0,0,0,0.4);
  background-size: cover;
  background-position: center;
  overflow: visible;
}
.item__label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: rgba(0,0,0,0.7);
  text-align: center;
  line-height: 1.1;
  padding: 2px;
  pointer-events: none;
  text-shadow: 0 1px 0 rgba(255,255,255,0.4);
  max-width: 100%;
  word-break: break-word;
}
.item.has-img .item__label { display: none; }
.item.is-selected { border-color: var(--amber); box-shadow: 0 0 0 1.5px var(--amber), 0 6px 18px -6px rgba(0,0,0,0.6); z-index: 50; }

/* selection handles (counter-scaled by --inv set on stage) */
.handle {
  position: absolute;
  width: 12px; height: 12px;
  background: var(--paper);
  border: 1.5px solid var(--amber);
  border-radius: 2px;
  transform: translate(-50%, -50%) scale(var(--inv, 1));
  z-index: 60;
  display: none;
}
.item.is-selected .handle { display: block; }
.handle[data-h="nw"] { left: 0; top: 0; cursor: nwse-resize; }
.handle[data-h="ne"] { left: 100%; top: 0; cursor: nesw-resize; }
.handle[data-h="sw"] { left: 0; top: 100%; cursor: nesw-resize; }
.handle[data-h="se"] { left: 100%; top: 100%; cursor: nwse-resize; }
.handle--rot {
  left: 50%; top: 0;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--amber);
  border-color: var(--paper);
  cursor: grab;
  transform: translate(-50%, -180%) scale(var(--inv, 1));
}
.item.is-selected .handle--rot::before {
  content: ""; position: absolute;
  left: 50%; top: 100%;
  width: 1.5px; height: 14px;
  background: var(--amber);
  transform: translateX(-50%);
}

/* dimension readout while dragging */
.dim-tag {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--ink-900);
  color: var(--amber);
  border: 1px solid var(--amber);
  padding: 2px 6px;
  border-radius: 4px;
  transform: translate(-50%, -50%) scale(var(--inv, 1));
  white-space: nowrap;
  pointer-events: none;
}

/* drag ghost when dragging from catalog */
.drag-ghost {
  position: fixed;
  pointer-events: none;
  z-index: 999;
  background: var(--amber-soft);
  border: 1.5px dashed var(--amber);
  border-radius: 4px;
  display: grid; place-items: center;
  font-size: 22px;
  transform: translate(-50%, -50%);
}

/* ===================== Stage HUD ===================== */
.stage-hud {
  position: absolute;
  bottom: 16px; left: 16px;
  display: flex; gap: 8px; align-items: center;
  z-index: 12;
}
.stage-hud--tips {
  left: 50%; transform: translateX(-50%);
  bottom: 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--fg-mute);
  background: rgba(13,16,20,0.6);
  padding: 5px 12px;
  border-radius: 20px;
  border: 1px solid var(--line-soft);
  backdrop-filter: blur(6px);
}
.stage-hud--tips kbd {
  font-family: var(--font-mono);
  background: var(--ink-700);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0 4px;
  color: var(--fg-dim);
}
.zoom-ctl { display: flex; background: var(--ink-800); border: 1px solid var(--line); border-radius: var(--r-sm); overflow: hidden; }
.hud-btn {
  background: var(--ink-800);
  border: 1px solid var(--line);
  color: var(--fg-dim);
  padding: 7px 11px;
  font-size: 14px;
  cursor: pointer;
  transition: all .12s;
}
.zoom-ctl .hud-btn { border: none; border-right: 1px solid var(--line); }
.zoom-ctl .hud-btn:last-child { border-right: none; }
.hud-btn:hover { color: var(--fg); background: var(--ink-600); }
.hud-btn--wide { min-width: 58px; font-family: var(--font-mono); font-size: 12px; }
.hud-btn--toggle { border-radius: var(--r-sm); font-family: var(--font-mono); font-size: 12px; }
.hud-btn--toggle.is-on { color: var(--amber); border-color: var(--amber); }

/* ===================== 3D viewer ===================== */
.viewer3d { position: absolute; inset: 0; background: #0a0c10; }
.viewer3d canvas { display: block; }
.viewer3d__loading {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-family: var(--font-mono);
  color: var(--fg-dim);
  font-size: 14px;
}
.viewer3d__hint {
  position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 10.5px; color: var(--fg-mute);
  background: rgba(13,16,20,0.6); padding: 5px 12px; border-radius: 20px;
  border: 1px solid var(--line-soft); backdrop-filter: blur(6px);
}

/* ===================== Toast ===================== */
.toast {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translate(-50%, 20px);
  background: var(--ink-700);
  border: 1px solid var(--amber);
  color: var(--fg);
  padding: 10px 18px;
  border-radius: var(--r-md);
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 200;
  box-shadow: 0 12px 30px -10px rgba(0,0,0,0.7);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* scrollbars */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--ink-600); border-radius: 6px; border: 2px solid var(--ink-900); }
::-webkit-scrollbar-thumb:hover { background: var(--ink-500); }

/* responsive: collapse panels on small screens */
@media (max-width: 940px) {
  body { grid-template-columns: 1fr; grid-template-areas: "top" "center"; }
  .panel { position: absolute; top: var(--topbar-h); bottom: 0; width: 84vw; max-width: 320px; z-index: 30; transition: transform .25s; }
  .panel--left { transform: translateX(-101%); }
  .panel--right { right: 0; transform: translateX(101%); }
  body.show-left .panel--left { transform: none; }
  body.show-right .panel--right { transform: none; }
}