/* ── Reset & Variables ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0f0f16;
  --panel-bg:    #16161f;
  --panel-border:#2a2a3a;
  --input-bg:    #1e1e2c;
  --input-border:#333348;
  --text:        #d4d4e8;
  --text-dim:    #7070a0;
  --text-muted:  #444466;
  --accent:      #4e8eff;
  --accent-dim:  #1a3a7a;
  --green:       #3ecf6e;
  --red:         #e05555;
  --gold:        #f0c040;
  --header-h:    48px;
  --panel-w:     260px;
  --radius:      6px;
  --font:        -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html, body {
  height: 100%;
  overflow: hidden;
  font-family: var(--font);
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
}

/* ── Header ─────────────────────────────────────────────────────────────── */
.app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--panel-bg);
  border-bottom: 1px solid var(--panel-border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 12px;
  z-index: 100;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 14px;
  color: #fff;
  letter-spacing: 0.3px;
  flex: 1;
}

.brand-icon {
  width: 28px; height: 28px;
  background: var(--accent);
  border-radius: 5px;
  display: grid;
  place-items: center;
  font-size: 16px;
  color: #fff;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.header-sep {
  width: 1px; height: 20px;
  background: var(--panel-border);
  margin: 0 4px;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 12px;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
  white-space: nowrap;
  line-height: 1;
}

.btn-ghost {
  background: transparent;
  border-color: var(--input-border);
  color: var(--text-dim);
}
.btn-ghost:hover {
  background: var(--input-bg);
  color: var(--text);
  border-color: var(--accent);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  width: 100%;
  justify-content: center;
  padding: 7px 12px;
  font-size: 13px;
}
.btn-primary:hover { background: #6aa0ff; border-color: #6aa0ff; }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-danger {
  background: transparent;
  border-color: var(--red);
  color: var(--red);
  width: 100%;
  justify-content: center;
  padding: 6px 12px;
  margin-top: 6px;
}
.btn-danger:hover { background: rgba(224,85,85,0.12); }

.btn-add {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  padding: 3px 8px;
  font-size: 11px;
  border-radius: 4px;
}
.btn-add:hover { background: var(--accent); color: #fff; }

.btn-sm {
  padding: 3px 8px;
  font-size: 11px;
}

/* ── App Layout ──────────────────────────────────────────────────────────── */
.app-body {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0; bottom: 0;
  display: flex;
}

/* ── Panels ──────────────────────────────────────────────────────────────── */
.panel {
  width: var(--panel-w);
  min-width: var(--panel-w);
  background: var(--panel-bg);
  border-color: var(--panel-border);
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.panel-left  { border-right: 1px solid var(--panel-border); }
.panel-right { border-left:  1px solid var(--panel-border); }

.panel-section {
  padding: 10px 12px;
  border-bottom: 1px solid var(--panel-border);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

/* ── Canvas ──────────────────────────────────────────────────────────────── */
.canvas-area {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#three-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.canvas-overlay {
  position: absolute;
  pointer-events: none;
}

.canvas-hint {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.5);
  color: var(--text-dim);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 20px;
  pointer-events: none;
  transition: opacity 0.3s;
}

.view-controls {
  position: absolute;
  top: 10px;
  right: 10px;
  display: flex;
  gap: 4px;
}

.wall-label-overlay {
  position: absolute;
  pointer-events: none;
  font-size: 11px;
  font-weight: 600;
  color: #fff;
  text-shadow: 0 1px 4px rgba(0,0,0,0.9);
  white-space: nowrap;
  transform: translateX(-50%);
}

/* ── Wall List ───────────────────────────────────────────────────────────── */
.wall-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.wall-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 8px;
  border-radius: var(--radius);
  border: 1px solid var(--panel-border);
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s;
  background: var(--input-bg);
}

.wall-item:hover { border-color: var(--accent-dim); }
.wall-item.selected {
  border-color: var(--accent);
  background: rgba(78,142,255,0.08);
}

.wall-item-swatch {
  width: 28px; height: 20px;
  border-radius: 3px;
  flex-shrink: 0;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.1);
}

.wall-item-swatch canvas {
  width: 100%; height: 100%;
  display: block;
}

.wall-item-info {
  flex: 1;
  overflow: hidden;
  min-width: 0;
}

.wall-item-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.wall-item-sub {
  font-size: 10px;
  color: var(--text-dim);
  margin-top: 1px;
}

.wall-item-del {
  width: 18px; height: 18px;
  display: grid;
  place-items: center;
  border-radius: 3px;
  color: var(--text-muted);
  cursor: pointer;
  flex-shrink: 0;
  font-size: 14px;
  line-height: 1;
  transition: color 0.1s, background 0.1s;
}
.wall-item-del:hover { color: var(--red); background: rgba(224,85,85,0.15); }

.wall-empty {
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  padding: 16px 0;
}

/* ── Position Nudge ──────────────────────────────────────────────────────── */
.nudge-section { display: flex; flex-direction: column; gap: 8px; }
.nudge-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 3px;
}
.nudge-row {
  display: flex;
  align-items: center;
  gap: 3px;
}
.nudge-row input[type=number] {
  flex: 1;
  text-align: center;
  min-width: 0;
}

.nudge-btn {
  flex-shrink: 0;
  width: 28px; height: 24px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 4px;
  color: var(--text-dim);
  font-size: 11px;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.1s, color 0.1s;
}
.nudge-btn:hover { background: var(--accent-dim); color: var(--accent); border-color: var(--accent); }

.nudge-btn-wide {
  width: 34px;
  font-size: 10px;
}

.kbd-hint {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.5;
}

kbd {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 3px;
  padding: 1px 4px;
  font-size: 10px;
  font-family: var(--font);
  color: var(--text-dim);
}

/* ── Form Elements ───────────────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}

.form-row {
  display: flex;
  gap: 8px;
}
.form-row .form-group { flex: 1; margin-bottom: 8px; }

label {
  font-size: 10px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

input[type=text],
input[type=number],
select {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 12px;
  font-family: var(--font);
  padding: 5px 8px;
  width: 100%;
  outline: none;
  transition: border-color 0.12s;
  -moz-appearance: textfield;
}
input[type=number]::-webkit-inner-spin-button { opacity: 0.5; }
input:focus, select:focus { border-color: var(--accent); }
select { cursor: pointer; }

/* ── Build Preview ───────────────────────────────────────────────────────── */
.build-preview {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  padding: 8px 10px;
  margin-bottom: 8px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.preview-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
}

.preview-label { color: var(--text-dim); }
.preview-val { color: var(--text); font-weight: 500; }
.preview-val.accent { color: var(--accent); }

/* ── Stats Grid ──────────────────────────────────────────────────────────── */
.stats-grid {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 6px;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 11px;
  padding: 2px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.stat-label { color: var(--text-dim); }
.stat-val { color: var(--text); font-weight: 600; font-size: 12px; }
.stat-val.gold { color: var(--gold); }
.stat-val.green { color: var(--green); }
.stat-val.accent { color: var(--accent); }

/* ── Totals ──────────────────────────────────────────────────────────────── */
.totals-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  padding: 2px 0;
}
.totals-label { color: var(--text-muted); }
.totals-val { color: var(--text-dim); font-weight: 600; }
.totals-row.total-line {
  border-top: 1px solid var(--panel-border);
  margin-top: 4px;
  padding-top: 6px;
}
.totals-row.total-line .totals-label { color: var(--text-dim); }
.totals-row.total-line .totals-val { color: var(--gold); font-size: 12px; }

/* ── Scrollbar ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--panel-border); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Modal / Overlay ─────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  display: grid;
  place-items: center;
}

.modal {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 20px;
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal h3 { font-size: 14px; color: var(--text); }
.modal p { font-size: 12px; color: var(--text-dim); line-height: 1.5; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; }

/* ── PDF import scale bar ────────────────────────────────────────────────── */
.pdf-controls {
  position: absolute;
  bottom: 40px; left: 50%; transform: translateX(-50%);
  background: rgba(22,22,31,0.92);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
}

.pdf-controls input[type=range] {
  width: 90px;
}

/* ── Tool Bar (canvas overlay) ───────────────────────────────────────────── */
.tool-bar {
  position: absolute;
  top: 10px;
  left: 10px;
  display: flex;
  gap: 4px;
  pointer-events: all;
  z-index: 10;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  background: rgba(22, 22, 35, 0.88);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--text-dim);
  font-size: 11px;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  white-space: nowrap;
  line-height: 1;
  backdrop-filter: blur(4px);
}

.tool-btn:hover {
  background: rgba(40, 40, 70, 0.95);
  color: var(--text);
  border-color: var(--accent-dim);
}

.tool-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ── Scene Theme Buttons ─────────────────────────────────────────────────── */
.theme-row {
  display: flex;
  gap: 6px;
}

.theme-btn {
  flex: 1;
  padding: 5px 0;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--text-dim);
  font-size: 11px;
  font-family: var(--font);
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.theme-btn:hover {
  border-color: var(--accent-dim);
  color: var(--text);
}

.theme-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Inventory buttons (header) ──────────────────────────────────────────── */
.btn-inventory {
  background: rgba(62,207,110,0.08);
  border-color: rgba(62,207,110,0.3);
  color: var(--green);
}
.btn-inventory:hover {
  background: rgba(62,207,110,0.18);
  border-color: var(--green);
}
.btn-inventory-out {
  background: rgba(240,192,64,0.08);
  border-color: rgba(240,192,64,0.3);
  color: var(--gold);
}
.btn-inventory-out:hover {
  background: rgba(240,192,64,0.18);
  border-color: var(--gold);
}

/* ── Raster Builder Modal ────────────────────────────────────────────────── */
.rb-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.rb-modal {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  max-width: 960px;
  width: 100%;
  max-height: 90vh;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
}

.rb-header {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--panel-border);
  gap: 10px;
  flex-shrink: 0;
}

.rb-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  flex: 1;
}
.rb-title em { font-style: normal; color: var(--accent); }

.rb-dims {
  font-size: 11px;
  color: var(--text-muted);
}

.rb-close-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 16px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1;
}
.rb-close-btn:hover { background: var(--input-bg); color: var(--text); }

.rb-body {
  display: flex;
  overflow: hidden;
  flex: 1;
  min-height: 0;
}

/* ── Preview pane ──────────────────────────────────────────────────────────── */
.rb-preview-wrap {
  flex: 1;
  background: #000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  gap: 8px;
  min-width: 0;
}

#rb-preview {
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  max-width: 100%;
  max-height: calc(90vh - 140px);
  display: block;
}

.rb-preview-label {
  font-size: 10px;
  color: #404060;
}

/* ── Controls pane ─────────────────────────────────────────────────────────── */
.rb-controls {
  width: 240px;
  min-width: 240px;
  overflow-y: auto;
  border-left: 1px solid var(--panel-border);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rb-section {
  padding: 8px 0;
  border-bottom: 1px solid var(--panel-border);
}
.rb-section:last-child { border-bottom: none; }

.rb-section-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}

/* Toggle switches */
.rb-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}
.rb-toggle input { display: none; }

.rb-toggle-track {
  width: 30px; height: 16px;
  background: var(--input-border);
  border-radius: 8px;
  position: relative;
  flex-shrink: 0;
  transition: background 0.15s;
}
.rb-toggle-track::after {
  content: '';
  position: absolute;
  width: 12px; height: 12px;
  background: #fff;
  border-radius: 50%;
  top: 2px; left: 2px;
  transition: transform 0.15s;
}
.rb-toggle input:checked + .rb-toggle-track { background: var(--accent); }
.rb-toggle input:checked + .rb-toggle-track::after { transform: translateX(14px); }

.rb-toggle-label {
  font-size: 12px;
  color: var(--text-dim);
}
.rb-toggle:hover .rb-toggle-label { color: var(--text); }

/* Sub-section (shown/hidden with toggle) */
.rb-sub {
  margin-top: 8px;
  padding-left: 4px;
}

.rb-field-label {
  display: block;
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 4px;
}

.rb-select {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 11px;
  padding: 4px 6px;
  cursor: pointer;
}
.rb-select:focus { outline: none; border-color: var(--accent); }

input[type=range] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Background radio buttons */
.rb-bg-row {
  display: flex;
  gap: 8px;
}
.rb-bg-opt {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--text-dim);
  cursor: pointer;
}
.rb-bg-opt input { cursor: pointer; accent-color: var(--accent); }
.rb-bg-swatch {
  display: inline-block;
  width: 16px; height: 16px;
  border-radius: 3px;
}

/* Footer */
.rb-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-top: 1px solid var(--panel-border);
  flex-shrink: 0;
}

.rb-res-note {
  font-size: 11px;
  color: var(--text-muted);
}

.rb-dl-btn {
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
  padding: 7px 18px;
  cursor: pointer;
  transition: background 0.12s;
}
.rb-dl-btn:hover { background: #6aa0ff; }

/* ── Inventory Toast ─────────────────────────────────────────────────────── */
.inv-toast {
  position: fixed;
  top: 58px;
  right: 16px;
  z-index: 600;
  animation: inv-slide-in 0.2s ease;
}

@keyframes inv-slide-in {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.inv-toast-inner {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 12px 14px;
  max-width: 320px;
  font-size: 12px;
  color: var(--text);
  line-height: 1.55;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  position: relative;
}

.inv-toast-close {
  position: absolute;
  top: 8px; right: 8px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 13px;
  cursor: pointer;
  padding: 2px 5px;
  border-radius: 4px;
  line-height: 1;
}
.inv-toast-close:hover { background: var(--input-bg); }