/* DesignPro Studio — Premium CSS Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --bg-deep: #08080f;
  --bg-dark: #0d0d1a;
  --bg-panel: #111120;
  --bg-card: #161628;
  --bg-hover: #1c1c38;
  --border: rgba(99,102,241,0.12);
  --border-hi: rgba(99,102,241,0.35);

  --accent: #6366f1;
  --accent-hi: #818cf8;
  --accent-glow: rgba(99,102,241,0.22);
  --accent2: #06b6d4;
  --accent2-glow: rgba(6,182,212,0.18);
  --green: #10b981;
  --amber: #f59e0b;
  --rose: #f43f5e;
  --purple: #a855f7;

  --text-1: #f1f5f9;
  --text-2: #94a3b8;
  --text-3: #4a5568;

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow: 0 4px 24px rgba(0,0,0,.5);
  --shadow-lg: 0 8px 48px rgba(0,0,0,.65);

  --transition: 180ms cubic-bezier(.4,0,.2,1);

  --sidebar-w: 240px;
  --sidebar-r-w: 230px;
  --nav-h: 52px;
  --toolbar-h: 44px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  overflow: hidden;
  font-family: 'Inter', sans-serif;
  background: var(--bg-deep);
  color: var(--text-1);
  font-size: 13px;
  line-height: 1.5;
}

button { cursor: pointer; border: none; outline: none; font-family: inherit; }
input, select { font-family: inherit; }

/* Scrollbar */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-hi); border-radius: 99px; }

/* ── BG Effects ── */
.bg-grid {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(99,102,241,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.bg-orb {
  position: fixed; border-radius: 50%; pointer-events: none; z-index: 0; filter: blur(80px);
}
.bg-orb-1 { width: 600px; height: 600px; top: -200px; left: -150px; background: rgba(99,102,241,.08); }
.bg-orb-2 { width: 500px; height: 500px; bottom: -150px; right: -100px; background: rgba(6,182,212,.06); }

/* ── App Shell ── */
#app {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; height: 100vh; overflow: hidden;
}

/* ── Navbar ── */
#navbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; height: var(--nav-h);
  background: rgba(13,13,26,.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
  position: relative; z-index: 200; flex-shrink: 0;
}

.nav-brand { display: flex; align-items: center; gap: 10px; }
.nav-logo {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, rgba(99,102,241,.3), rgba(6,182,212,.2));
  border: 1px solid var(--border-hi);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 12px var(--accent-glow);
}
.nav-title {
  font-size: 16px; font-weight: 800; letter-spacing: -.3px;
  background: linear-gradient(135deg, var(--accent-hi), var(--accent2));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.nav-sub { font-size: 10px; color: var(--text-3); margin-top: -1px; }

.nav-actions { display: flex; align-items: center; gap: 8px; }

.unit-system-toggle, .lang-toggle {
  display: flex; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: 20px; padding: 2px; overflow: hidden;
}
.unit-btn, .lang-btn {
  padding: 3px 10px; border-radius: 16px; font-size: 11px; font-weight: 700;
  color: var(--text-3); background: transparent; letter-spacing: .5px;
  transition: var(--transition);
}
.unit-btn.active, .lang-btn.active {
  background: var(--accent); color: white;
  box-shadow: 0 0 8px var(--accent-glow);
}

.nav-btn-secondary {
  padding: 5px 12px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-2); font-size: 11px; font-weight: 500;
  transition: var(--transition);
}
.nav-btn-secondary:hover { border-color: var(--accent); color: var(--accent-hi); background: var(--bg-hover); }

/* ── Main Layout ── */
#main-layout {
  display: flex; flex: 1; overflow: hidden; position: relative;
}

/* ── Wizard ── */
#wizard-overlay {
  position: absolute; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  background: rgba(8,8,15,.85); backdrop-filter: blur(8px);
  padding: 20px;
}
#wizard-overlay.hidden { display: none; }

.wizard-card {
  width: 100%; max-width: 620px;
  background: var(--bg-panel);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  box-shadow: var(--shadow-lg), 0 0 80px var(--accent-glow);
  max-height: 90vh; overflow-y: auto;
}
.wizard-header { text-align: center; margin-bottom: 28px; }
.wizard-logo { font-size: 44px; margin-bottom: 12px; }
.wizard-title {
  font-size: 26px; font-weight: 800; margin-bottom: 6px;
  background: linear-gradient(135deg, var(--accent-hi), var(--accent2));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.wizard-sub { color: var(--text-2); font-size: 14px; }

.wiz-section { margin-bottom: 24px; }
.wiz-label {
  font-size: 11px; font-weight: 700; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px;
}

.room-type-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
}
.room-type-btn {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 14px 8px; font-size: 22px;
  background: var(--bg-card); border: 2px solid var(--border);
  border-radius: var(--radius-lg); color: var(--text-2); font-family: inherit;
  transition: var(--transition);
}
.room-type-btn span { font-size: 11px; font-weight: 600; }
.room-type-btn:hover, .room-type-btn.selected {
  border-color: var(--accent); background: rgba(99,102,241,.12);
  color: var(--accent-hi); transform: translateY(-2px);
  box-shadow: 0 0 20px var(--accent-glow);
}

.dim-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.dim-field label { display: block; font-size: 10px; color: var(--text-3); margin-bottom: 4px; font-weight: 600; text-transform: uppercase; letter-spacing: .5px; }
.dim-input-wrap { display: flex; align-items: center; gap: 0; }
.dim-input-wrap input {
  flex: 1; padding: 8px 10px; background: var(--bg-dark);
  border: 1px solid var(--border); border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  color: var(--text-1); font-size: 13px; font-weight: 600; width: 100%;
}
.dim-input-wrap input:focus { outline: none; border-color: var(--accent); }
.dim-unit-label {
  padding: 8px 8px; background: var(--bg-card);
  border: 1px solid var(--border); border-left: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 10px; color: var(--text-3); font-weight: 600; white-space: nowrap;
}

.style-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.style-chip {
  padding: 6px 14px; border-radius: 20px; font-size: 12px; font-weight: 600;
  background: var(--bg-card); border: 1px solid var(--border); color: var(--text-2);
  transition: var(--transition);
}
.style-chip.active, .style-chip:hover {
  background: rgba(99,102,241,.15); border-color: var(--accent); color: var(--accent-hi);
}

.wizard-footer { margin-top: 28px; display: flex; justify-content: center; }
.btn-generate {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 36px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent), #4f46e5);
  color: white; font-size: 15px; font-weight: 700;
  box-shadow: 0 0 24px var(--accent-glow);
  transition: var(--transition);
}
.btn-generate:hover { transform: translateY(-2px); box-shadow: 0 0 36px var(--accent-glow); }

/* ── Sidebar Left ── */
#sidebar-left {
  width: var(--sidebar-w); flex-shrink: 0;
  background: rgba(13,13,26,.95);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; overflow: hidden;
  backdrop-filter: blur(12px);
}

.stabs {
  display: flex; flex-direction: column;
  border-right: none; flex-shrink: 0;
  /* We'll use vertical tabs */
  padding: 8px 6px; gap: 2px;
}

.stab {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; border-radius: var(--radius-sm);
  background: transparent; color: var(--text-3);
  font-size: 11px; font-weight: 600;
  transition: var(--transition); width: 100%;
  border: 1px solid transparent;
}
.stab:hover { background: var(--bg-hover); color: var(--text-2); }
.stab.active {
  background: rgba(99,102,241,.15); color: var(--accent-hi);
  border-color: rgba(99,102,241,.3);
}
.stab-icon { font-size: 14px; }
.stab-label { flex: 1; text-align: left; }

.stabs-content { flex: 1; overflow: hidden; }
.spanel { display: none; height: 100%; overflow-y: auto; padding: 12px 10px; }
.spanel.active { display: block; }

.sec-label {
  font-size: 10px; font-weight: 700; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 1px;
  margin-bottom: 8px; padding-bottom: 5px;
  border-bottom: 1px solid var(--border);
}

/* Room Info */
#room-info-panel .ri-grid { display: flex; flex-direction: column; gap: 4px; }
.ri-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 8px; background: var(--bg-card); border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.ri-k { color: var(--text-3); font-size: 10px; }
.ri-v { font-weight: 700; color: var(--accent-hi); font-size: 11px; }

/* Tools */
.tools-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; }
.tool-btn {
  padding: 7px 6px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-2); font-size: 10px; font-weight: 600;
  transition: var(--transition);
}
.tool-btn:hover { border-color: var(--amber); color: var(--amber); background: rgba(245,158,11,.1); }
.tool-btn.active { background: rgba(245,158,11,.15); border-color: var(--amber); color: var(--amber); box-shadow: 0 0 8px rgba(245,158,11,.2); }

.undo-row { display: flex; gap: 5px; }
.undo-btn {
  flex: 1; padding: 6px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-2); font-size: 11px; transition: var(--transition);
}
.undo-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent-hi); }
.undo-btn:disabled { opacity: 0.35; cursor: default; }

/* Furniture */
.furn-placed-item {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 8px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  cursor: pointer; transition: var(--transition); margin-bottom: 3px;
}
.furn-placed-item:hover, .furn-placed-item.sel { border-color: var(--accent); background: var(--bg-hover); }
.fpi-color { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.fpi-name { flex: 1; font-size: 11px; color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.fpi-dim { font-size: 9px; color: var(--text-3); }
.fpi-act { display: flex; gap: 3px; }
.fpi-btn {
  width: 20px; height: 20px; border-radius: 4px; background: var(--bg-hover);
  color: var(--text-3); font-size: 10px; display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.fpi-btn.rot:hover { background: rgba(99,102,241,.2); color: var(--accent-hi); }
.fpi-btn.del:hover { background: rgba(244,63,94,.2); color: var(--rose); }

/* Furniture library categories */
.furn-cat { margin-bottom: 12px; }
.furn-cat-label { font-size: 10px; color: var(--text-3); margin-bottom: 5px; font-weight: 600; }
.furn-lib-grid { display: flex; flex-direction: column; gap: 3px; }
.furn-lib-btn {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 8px; background: var(--bg-dark);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-2); font-size: 10px; transition: var(--transition);
}
.furn-lib-btn:hover { border-color: var(--green); color: var(--green); background: rgba(16,185,129,.1); }
.furn-lib-dim { color: var(--text-3); font-size: 9px; }

/* Arch */
.arch-item {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 8px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  cursor: pointer; transition: var(--transition); margin-bottom: 3px;
}
.arch-item:hover { border-color: var(--accent); }
.arch-emoji { font-size: 14px; }
.arch-info { flex: 1; }
.arch-wall { font-size: 10px; color: var(--text-3); }
.arch-size { font-size: 10px; color: var(--text-2); }
.arch-del { width: 18px; height: 18px; border-radius: 3px; background: transparent; color: var(--text-3); font-size: 10px; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.arch-del:hover { background: rgba(244,63,94,.2); color: var(--rose); }

.arch-add-row { display: flex; gap: 5px; margin-top: 12px; }
.arch-add-btn {
  flex: 1; padding: 7px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-2); font-size: 11px; font-weight: 600; transition: var(--transition);
}
.arch-add-btn:hover { border-color: var(--accent); color: var(--accent-hi); background: var(--bg-hover); }

/* Design */
.design-section { margin-bottom: 18px; }
.color-row {
  display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
  padding: 6px 8px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
}
.color-row label { flex: 1; font-size: 11px; color: var(--text-2); }
.color-row input[type="color"] {
  width: 28px; height: 24px; border: none; background: none; cursor: pointer; border-radius: 4px; padding: 0;
}
.color-hex { font-size: 10px; color: var(--text-3); font-family: monospace; }
.mat-label { font-size: 10px; color: var(--text-3); margin-bottom: 5px; }
.mat-chips { display: flex; flex-wrap: wrap; gap: 4px; }
.mat-chip {
  padding: 4px 8px; border-radius: 14px; font-size: 10px; font-weight: 600;
  background: var(--bg-dark); border: 1px solid var(--border); color: var(--text-2);
  transition: var(--transition);
}
.mat-chip.active, .mat-chip:hover {
  background: rgba(99,102,241,.15); border-color: var(--accent); color: var(--accent-hi);
}

.toggle-row {
  display: flex; align-items: center; gap: 8px; cursor: pointer;
  padding: 6px 0;
}
.toggle-row input { display: none; }
.toggle-track {
  width: 32px; height: 18px; border-radius: 9px;
  background: var(--bg-dark); border: 1px solid var(--border);
  position: relative; transition: var(--transition); flex-shrink: 0;
}
.toggle-track::after {
  content: ''; position: absolute; top: 2px; left: 2px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--text-3); transition: var(--transition);
}
.toggle-row input:checked ~ .toggle-track { background: var(--accent); border-color: var(--accent); }
.toggle-row input:checked ~ .toggle-track::after { background: white; transform: translateX(14px); }
.toggle-label { font-size: 11px; color: var(--text-2); }

.ctrl-row { margin-bottom: 8px; }
.ctrl-row label { display: flex; justify-content: space-between; font-size: 10px; color: var(--text-3); margin-bottom: 4px; }
.ctrl-val { color: var(--accent-hi); font-weight: 700; }
.ctrl-row input[type="range"] {
  width: 100%; accent-color: var(--accent); height: 4px; cursor: pointer;
}

/* Costs */
.costs-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 8px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 3px;
}
.ci-name { font-size: 10px; color: var(--text-2); flex: 1; }
.ci-count { font-size: 10px; color: var(--text-3); padding: 0 6px; }
.ci-price { font-size: 11px; font-weight: 700; color: var(--green); }
.costs-total-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 8px; margin-top: 10px;
  border-top: 1px solid var(--border);
  font-weight: 600; font-size: 13px;
}
.costs-total-val { color: var(--accent-hi); font-size: 18px; font-weight: 800; }

/* Export */
.export-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.export-card {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 12px 6px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text-2); transition: var(--transition);
}
.export-card:hover {
  border-color: var(--accent); background: var(--bg-hover);
  transform: translateY(-2px); box-shadow: 0 4px 16px var(--accent-glow);
}
.exp-icon { font-size: 22px; }
.exp-title { font-size: 12px; font-weight: 700; color: var(--text-1); }
.exp-desc { font-size: 9px; color: var(--text-3); text-align: center; }
.btn-export-item {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  width: 100%; padding: 8px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-2); font-size: 11px; transition: var(--transition);
}
.btn-export-item:hover { border-color: var(--green); color: var(--green); background: rgba(16,185,129,.1); }

/* ── Canvas Area ── */
#canvas-area {
  flex: 1; display: flex; flex-direction: column; overflow: hidden;
  min-width: 0;
}

/* Toolbar */
#toolbar {
  display: flex; align-items: center; gap: 6px; padding: 6px 12px;
  height: var(--toolbar-h); flex-shrink: 0;
  background: rgba(13,13,26,.9); border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.view-toggle { display: flex; background: var(--bg-dark); border-radius: var(--radius-sm); border: 1px solid var(--border); padding: 2px; }
.view-btn {
  padding: 4px 12px; border-radius: 4px; font-size: 11px; font-weight: 600;
  color: var(--text-3); background: transparent; transition: var(--transition);
}
.view-btn.active { background: var(--accent); color: white; box-shadow: 0 0 8px var(--accent-glow); }

.toolbar-sep { width: 1px; height: 22px; background: var(--border); margin: 0 6px; }
.toolbar-spacer { flex: 1; }

.zoom-controls { display: flex; align-items: center; gap: 4px; }
.zm-btn {
  width: 24px; height: 24px; border-radius: 4px; background: var(--bg-card);
  border: 1px solid var(--border); color: var(--text-2); font-size: 14px;
  display: flex; align-items: center; justify-content: center; transition: var(--transition);
}
.zm-btn:hover { border-color: var(--accent); color: var(--accent-hi); }
.zm-val { font-size: 11px; color: var(--text-2); min-width: 38px; text-align: center; }

.toolbar-btn {
  padding: 4px 9px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-2); font-size: 13px; transition: var(--transition);
}
.toolbar-btn:hover { border-color: var(--accent); color: var(--accent-hi); }
.toolbar-btn.active { background: rgba(99,102,241,.15); border-color: var(--accent); color: var(--accent-hi); }

.measure-bar {
  display: flex; align-items: center; gap: 6px;
  padding: 4px 10px; background: rgba(245,158,11,.1);
  border: 1px solid rgba(245,158,11,.3); border-radius: 20px;
  font-size: 11px; color: var(--amber);
}
.measure-icon { font-size: 13px; }

/* ── Views Wrapper ── */
#views-wrapper {
  flex: 1; display: flex; overflow: hidden; position: relative;
}

.view-panel {
  display: flex; flex-direction: column; position: relative; overflow: hidden;
  flex: 1;
}
.view-panel.fullscreen { flex: 1 1 100%; }
.view-panel.hidden { display: none; }

.vp-header {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 12px; flex-shrink: 0;
  background: rgba(8,8,15,.6); border-bottom: 1px solid var(--border);
}
.vp-badge {
  padding: 2px 8px; border-radius: 10px; font-size: 10px; font-weight: 800;
  letter-spacing: .5px;
}
.badge-2d { background: rgba(245,158,11,.15); color: var(--amber); border: 1px solid rgba(245,158,11,.3); }
.badge-3d { background: rgba(99,102,241,.15); color: var(--accent-hi); border: 1px solid rgba(99,102,241,.3); }
.vp-title { font-size: 11px; color: var(--text-2); font-weight: 600; }
.vp-hint { font-size: 9px; color: var(--text-3); margin-left: auto; }

#canvas-2d { display: block; width: 100%; height: 100%; background: #0a0a16; cursor: crosshair; }
#container-3d { flex: 1; width: 100%; height: 100%; background: #080810; position: relative; }
#container-3d canvas { display: block; width: 100% !important; height: 100% !important; }

/* Split divider */
#split-divider {
  width: 6px; background: var(--border); cursor: col-resize; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; color: var(--text-3); user-select: none;
  transition: background var(--transition);
}
#split-divider:hover { background: var(--accent); }

/* Loading overlay */
.loading-overlay {
  position: absolute; inset: 0; z-index: 10;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: rgba(8,8,15,.8); backdrop-filter: blur(4px);
}
.loading-spinner {
  width: 36px; height: 36px; border-radius: 50%;
  border: 3px solid var(--border-hi);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite; margin-bottom: 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { font-size: 13px; color: var(--text-2); }

/* ── Sidebar Right ── */
#sidebar-right {
  width: var(--sidebar-r-w); flex-shrink: 0;
  background: rgba(13,13,26,.95); border-left: 1px solid var(--border);
  display: flex; flex-direction: column; overflow: hidden;
  backdrop-filter: blur(12px);
}
.sr-header {
  padding: 10px 12px; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.sr-title { font-size: 12px; font-weight: 700; color: var(--text-2); }
#selection-panel { flex: 1; overflow-y: auto; padding: 10px 12px; }
.no-selection { font-size: 11px; color: var(--text-3); text-align: center; padding: 24px 0; }

/* Selection Panel Contents */
.sel-name {
  font-size: 14px; font-weight: 800; color: var(--text-1); margin-bottom: 12px;
  padding-bottom: 8px; border-bottom: 1px solid var(--border);
}
.sel-section { margin-bottom: 14px; }
.sel-sec-label { font-size: 10px; font-weight: 700; color: var(--text-3); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 6px; }

.dim-edit-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 4px; margin-bottom: 8px; }
.dim-edit-field label { font-size: 9px; color: var(--text-3); display: block; margin-bottom: 3px; }
.dim-edit-field input {
  width: 100%; padding: 6px 6px; background: var(--bg-dark);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-1); font-size: 11px; font-weight: 600;
}
.dim-edit-field input:focus { outline: none; border-color: var(--accent); }

/* Unit display badges */
.dim-badges { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 8px; }
.dim-badge {
  padding: 3px 7px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 10px; color: var(--text-2);
}
.dim-badge strong { color: var(--accent-hi); }

.sel-color-row {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 8px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 6px;
}
.sel-color-row label { flex: 1; font-size: 11px; color: var(--text-2); }
.sel-color-row input[type="color"] { width: 28px; height: 24px; border: none; background: none; cursor: pointer; border-radius: 4px; padding: 0; }

.price-row {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 8px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 6px;
}
.price-row label { flex: 1; font-size: 11px; color: var(--text-2); }
.price-symbol { font-size: 12px; color: var(--green); font-weight: 700; }
.price-row input[type="number"] {
  width: 70px; padding: 4px 6px; background: var(--bg-dark);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--green); font-size: 13px; font-weight: 700; text-align: right;
}
.price-row input:focus { outline: none; border-color: var(--green); }

.sel-actions { display: flex; gap: 5px; margin-top: 8px; }
.sel-btn {
  flex: 1; padding: 7px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-2); font-size: 10px; font-weight: 600; transition: var(--transition);
}
.sel-btn:hover { border-color: var(--accent); color: var(--accent-hi); }
.sel-btn.danger { border-color: rgba(244,63,94,.3); }
.sel-btn.danger:hover { border-color: var(--rose); color: var(--rose); background: rgba(244,63,94,.1); }

/* Arch selection form */
.arch-edit-form { display: flex; flex-direction: column; gap: 6px; }
.arch-field label { font-size: 10px; color: var(--text-3); display: block; margin-bottom: 3px; }
.arch-field select, .arch-field input[type="number"] {
  width: 100%; padding: 6px 8px; background: var(--bg-dark);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-1); font-size: 12px;
}
.arch-field select:focus, .arch-field input:focus { outline: none; border-color: var(--accent); }
.arch-field select { color: var(--text-1); appearance: none; }

/* Door/Window style preview */
.door-preview {
  width: 100%; height: 70px; background: var(--bg-dark);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 8px; position: relative; overflow: hidden;
}

/* ── Toast ── */
#toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--bg-card); border: 1px solid var(--border-hi);
  border-radius: 24px; padding: 10px 20px;
  font-size: 12px; font-weight: 600; color: var(--text-1);
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s cubic-bezier(.4,0,.2,1), opacity 0.3s;
  opacity: 0; z-index: 999; white-space: nowrap;
  display: flex; align-items: center; gap: 8px;
}
#toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
#toast .toast-icon { font-size: 16px; }

/* -- Snap & Camera controls -- */
.snap-ctrl { display:flex; align-items:center; gap:4px; }
#snap-size {
  padding:3px 6px; background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius-sm); color:var(--text-2); font-size:10px;
  font-family:inherit; cursor:pointer;
}
#snap-size:focus { outline:none; border-color:var(--accent); }
.cam-presets { display:flex; gap:3px; }
.cam-btn {
  padding:4px 8px; border-radius:var(--radius-sm); font-size:10px; font-weight:600;
  background:var(--bg-card); border:1px solid var(--border); color:var(--text-3);
  transition:var(--transition); cursor:pointer;
}
.cam-btn.active { background:rgba(6,182,212,.15); border-color:var(--accent2); color:var(--accent2); }
.cam-btn:hover:not(.active) { border-color:var(--accent2); color:var(--accent2); background:rgba(6,182,212,.08); }

/* -- Modal -- */
.modal-overlay {
  position:fixed; inset:0; z-index:500;
  background:rgba(0,0,0,.7); backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
  display:flex; align-items:center; justify-content:center;
}
.modal-card {
  width:100%; max-width:640px; background:var(--bg-panel);
  border:1px solid var(--border-hi); border-radius:var(--radius-xl);
  box-shadow:var(--shadow-lg),0 0 60px var(--accent-glow); overflow:hidden;
}
.modal-header {
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 24px; border-bottom:1px solid var(--border);
  background:rgba(99,102,241,.06);
}
.modal-title { font-size:16px; font-weight:800; color:var(--text-1); }
.modal-close {
  width:28px; height:28px; border-radius:50%; background:var(--bg-card);
  border:1px solid var(--border); color:var(--text-2); font-size:12px;
  display:flex; align-items:center; justify-content:center; transition:var(--transition);
}
.modal-close:hover { border-color:var(--rose); color:var(--rose); background:rgba(244,63,94,.1); }
.modal-body { padding:24px; }
.shortcuts-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.sc-group { display:flex; flex-direction:column; gap:6px; }
.sc-group-label { font-size:10px; font-weight:800; color:var(--accent-hi); text-transform:uppercase; letter-spacing:1px; margin-bottom:4px; border-bottom:1px solid var(--border); padding-bottom:5px; }
.sc-row { display:flex; align-items:center; gap:5px; flex-wrap:wrap; }
.sc-row span { font-size:11px; color:var(--text-2); }
kbd {
  display:inline-flex; align-items:center; justify-content:center;
  padding:3px 7px; border-radius:5px; font-size:10px; font-weight:700;
  background:var(--bg-dark); border:1px solid var(--border-hi); color:var(--text-1);
  font-family:'Space Grotesk',monospace; box-shadow:0 2px 0 var(--border-hi);
  white-space:nowrap; min-width:22px;
}

/* -- Collision highlight -- */
.collision { outline:none; }

/* -- Safari fixes -- */
.modal-overlay,-webkit-backdrop-filter:blur(8px);
#wizard-overlay { -webkit-backdrop-filter:blur(8px); }
#navbar { -webkit-backdrop-filter:blur(16px); }
#sidebar-left { -webkit-backdrop-filter:blur(12px); }
#sidebar-right { -webkit-backdrop-filter:blur(12px); }
#toolbar { -webkit-backdrop-filter:blur(8px); }
#loading-3d { -webkit-backdrop-filter:blur(4px); }
#split-divider { -webkit-user-select:none; user-select:none; }

/* -- Alignment toolbar -- */
.align-tools {
  display:flex; align-items:center; gap:3px; margin-top:6px; flex-wrap:wrap;
}
.align-btn {
  width:26px; height:26px; border-radius:5px; background:var(--bg-card);
  border:1px solid var(--border); color:var(--text-2); font-size:13px;
  display:flex; align-items:center; justify-content:center; transition:var(--transition);
}
.align-btn:hover { border-color:var(--accent); color:var(--accent-hi); background:rgba(99,102,241,.15); }
#btn-duplicate { background:rgba(16,185,129,.1); border-color:rgba(16,185,129,.3); color:var(--green); font-size:14px; }
#btn-duplicate:hover { background:rgba(16,185,129,.2); border-color:var(--green); }
.align-sep { width:1px; height:18px; background:var(--border); margin:0 2px; }

/* -- Budget tracker -- */
.budget-box {
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); padding:10px; margin-bottom:12px;
}
.budget-header {
  display:flex; align-items:center; justify-content:space-between; margin-bottom:8px;
}
#budget-label { font-size:11px; font-weight:700; color:var(--text-2); }
.budget-input-row { display:flex; align-items:center; gap:4px; }
#budget-limit {
  width:72px; padding:3px 5px; background:var(--bg-dark);
  border:1px solid var(--border); border-radius:var(--radius-sm);
  color:var(--green); font-size:12px; font-weight:700; text-align:right;
}
#budget-limit:focus { outline:none; border-color:var(--green); }
.budget-bar-wrap { display:flex; flex-direction:column; gap:4px; }
.budget-bar-track {
  height:8px; background:var(--bg-dark); border-radius:99px;
  overflow:hidden; border:1px solid var(--border);
}
.budget-bar-fill {
  height:100%; width:0; border-radius:99px;
  background:linear-gradient(90deg,#10b981,#059669);
  transition:width 0.4s cubic-bezier(.4,0,.2,1), background 0.3s;
}
.budget-bar-labels {
  display:flex; justify-content:space-between;
  font-size:9px; color:var(--text-3); font-weight:700;
}
#budget-spent { color:var(--accent-hi); }

/* -- Environment Presets -- */
.env-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: 10px;
}
.env-btn {
  padding: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
  cursor: pointer;
}
.env-btn:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: var(--accent);
}
.env-btn.active {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--accent-hi);
  color: var(--text-1);
}

/* -- Toolbar Toggle -- */
.toolbar-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.toolbar-toggle:hover {
  background: rgba(255, 255, 255, 0.05);
}
.toolbar-toggle .toggle-track {
  width: 32px;
  height: 18px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 20px;
  position: relative;
  transition: var(--transition);
}
.toolbar-toggle .toggle-track::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  background: var(--text-3);
  border-radius: 50%;
  transition: var(--transition);
}
.toolbar-toggle input:checked + .toggle-track {
  background: var(--accent);
  border-color: var(--accent-hi);
}
.toolbar-toggle input:checked + .toggle-track::after {
  left: 16px;
  background: white;
}
.toolbar-toggle input {
  display: none;
}