/* ── Reset & Base ── */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
}

/* ── CSS Variables ── */
:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-tertiary: #242736;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --danger: #ef4444;
  --success: #10b981;
  --border: #2d3148;
  --radius: 6px;
  --header-h: 52px;
  --panel-w: 340px;
  --transition: 150ms ease;
}

/* ── Header ── */
#header {
  height: var(--header-h);
  flex-shrink: 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  gap: 24px;
}

#logo {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--accent);
  white-space: nowrap;
}

#project-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
}

#current-project-name {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

#header-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
  flex-wrap: wrap;
  justify-content: flex-end;
}

#header-actions button {
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 600;
  background: var(--accent);
  border: 1px solid var(--accent-hover);
}

#header-actions button:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(59, 130, 246, 0.3);
}

button {
  padding: 6px 12px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition);
  white-space: nowrap;
}

button:hover:not(:disabled) {
  background: var(--accent-hover);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

button.danger {
  background: var(--danger);
}

button.danger:hover {
  background: #dc2626;
}

.btn-small {
  padding: 4px 8px;
  font-size: 11px;
}

.btn-full {
  width: 100%;
}

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

/* ── Map Container ── */
#map-container {
  flex: 1;
  position: relative;
  background: var(--bg-primary);
  overflow: hidden;
}

#map {
  width: 100%;
  height: 100%;
}

/* ── Map Overlay Buttons ── */
.map-overlay-btn {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  transition: all 200ms ease;
}

.map-overlay-btn:hover {
  background: var(--accent-hover);
  transform: translateX(-50%) translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.5);
}

.map-overlay-btn.active {
  background: var(--danger);
}

.map-overlay-btn.active:hover {
  background: #dc2626;
  transform: translateX(-50%) translateY(-2px);
}

/* ── Panel ── */
#panel {
  width: var(--panel-w);
  flex-shrink: 0;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

#panel::-webkit-scrollbar {
  width: 6px;
}

#panel::-webkit-scrollbar-track {
  background: transparent;
}

#panel::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 3px;
}

#panel::-webkit-scrollbar-thumb:hover {
  background: var(--border);
}

/* ── Panel Sections ── */
.panel-section {
  border-bottom: 1px solid var(--border);
  padding: 8px;
  flex-shrink: 0;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  gap: 8px;
}

.section-header span {
  flex: 1;
  min-width: 0;
}

/* ── Input Elements ── */
input[type="text"],
input[type="number"],
input[type="file"],
select {
  width: 100%;
  padding: 6px 8px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  font-family: inherit;
  transition: border-color var(--transition);
  margin-bottom: 6px;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

input[type="color"] {
  width: 40px;
  height: 32px;
  padding: 2px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
}

input[type="range"] {
  width: 100%;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  margin: 4px 0;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  transition: background var(--transition);
}

input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  transition: background var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
  background: var(--accent-hover);
}

input[type="range"]::-moz-range-thumb:hover {
  background: var(--accent-hover);
}

.input-full {
  width: 100%;
}

.select-small {
  width: auto;
  padding: 4px 6px;
  font-size: 11px;
}

/* ── Location Section ── */
#section-search {
  flex-shrink: 0;
}

/* ── Beacon List ── */
#beacon-list {
  list-style: none;
  margin-bottom: 8px;
  max-height: 250px;
  overflow-y: auto;
}

#beacon-list li {
  display: flex;
  align-items: center;
  padding: 6px 8px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition);
  gap: 8px;
  margin-bottom: 4px;
  background: var(--bg-primary);
  border: 1px solid transparent;
}

#beacon-list li:hover {
  background: var(--bg-tertiary);
}

#beacon-list li.selected {
  background: var(--accent);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.3) 0%, rgba(59, 130, 246, 0.1) 100%);
  border-color: var(--accent);
  border-width: 2px;
  font-weight: 600;
  box-shadow: inset 0 0 8px rgba(59, 130, 246, 0.2);
}

.beacon-label-text {
  flex: 1;
  font-size: 12px;
  color: var(--text-primary);
  user-select: none;
}

.beacon-actions {
  display: flex;
  gap: 4px;
  opacity: 0.6;
  transition: opacity var(--transition);
}

#beacon-list li:hover .beacon-actions {
  opacity: 1;
}

.beacon-rename-btn,
.beacon-delete-btn {
  padding: 2px 6px;
  font-size: 11px;
  background: transparent;
  border: 1px solid var(--border);
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.beacon-rename-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
}

.beacon-delete-btn {
  color: var(--danger);
  border-color: var(--danger);
}

.beacon-delete-btn:hover {
  color: var(--danger);
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.1);
}

.placeholder {
  font-size: 11px;
  color: var(--text-secondary);
  text-align: center;
  padding: 16px 8px;
  font-style: italic;
}

/* ── Layer Controls ── */
#layer-add-controls {
  margin-bottom: 12px;
}

.layer-control-row {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-top: 6px;
}

.color-picker {
  width: 40px;
  flex-shrink: 0;
}

.opacity-control {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  min-width: 0;
}

.opacity-control input {
  margin: 0;
  flex: 1;
}

.opacity-control span {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  min-width: 30px;
  text-align: right;
}

#layer-apply-scope {
  width: auto;
  padding: 4px 6px;
  font-size: 11px;
  margin-bottom: 8px;
}

.layer-list {
  max-height: 300px;
  overflow-y: auto;
  margin-bottom: 8px;
}

.layer-row {
  display: grid;
  grid-template-columns: 28px 60px 1fr auto auto auto;
  gap: 12px;
  align-items: center;
  padding: 8px 6px;
  border-radius: var(--radius);
  background: var(--bg-primary);
  margin-bottom: 6px;
  font-size: 12px;
}

.layer-color-swatch {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 1px solid var(--border);
  cursor: pointer;
}

.layer-color-input {
  width: 28px;
  height: 24px;
  padding: 1px;
  margin: 0;
}

.layer-radius-label {
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.layer-opacity-display {
  color: var(--text-secondary);
  font-size: 10px;
  min-width: 30px;
  text-align: right;
}

.layer-actions {
  display: flex;
  gap: 4px;
}

.layer-toggle-btn,
.layer-delete-btn {
  padding: 2px 4px;
  font-size: 10px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.layer-toggle-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.layer-toggle-btn.hidden {
  opacity: 0.4;
  color: var(--text-secondary);
}

.layer-delete-btn:hover {
  color: var(--danger);
  border-color: var(--danger);
}

/* ── Floor Plan Controls ── */
#floor-plan-controls.hidden {
  display: none;
}

.control-group {
  margin-bottom: 10px;
}

.control-group label {
  display: block;
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.control-group input {
  width: 100%;
  margin: 0;
}

#fp-scale-display,
#fp-rotate-display {
  display: inline-block;
  margin-left: 8px;
  font-size: 11px;
  color: var(--text-secondary);
}

.control-buttons {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.control-buttons button {
  flex: 1;
  padding: 6px 8px;
  font-size: 11px;
}

/* ── Modals ── */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal.hidden {
  display: none;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  cursor: pointer;
}

.modal-content {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 400px;
  max-width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.modal-header span {
  font-weight: 500;
  font-size: 14px;
}

.modal-close {
  padding: 4px 8px;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  font-size: 18px;
  cursor: pointer;
  transition: color var(--transition);
}

.modal-close:hover {
  color: var(--accent);
}

.modal-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

#projects-list-items {
  list-style: none;
}

#projects-list-items li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border-radius: var(--radius);
  margin-bottom: 6px;
  font-size: 12px;
}

#projects-list-items .project-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#projects-list-items .project-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

#projects-list-items button {
  padding: 4px 8px;
  font-size: 10px;
}

/* ── Toast ── */
#toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 12px;
  max-width: 300px;
  transform: translateY(20px);
  opacity: 0;
  transition: all var(--transition);
  pointer-events: none;
  z-index: 2000;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

#toast.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

#toast.success {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

#toast.error {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

#toast.info {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent);
}

/* ── Utility ── */
.hidden {
  display: none !important;
}

/* ── Google Maps Overrides ── */
.pac-container {
  background: var(--bg-tertiary) !important;
  border: 1px solid var(--border) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3) !important;
}

.pac-item {
  padding: 10px 8px !important;
  border-bottom: 1px solid var(--border) !important;
  color: var(--text-primary) !important;
  font-size: 12px !important;
}

.pac-item:hover {
  background: var(--bg-secondary) !important;
}

.pac-item-query {
  color: var(--text-primary) !important;
}

.pac-matched {
  color: var(--accent) !important;
  font-weight: 500;
}

/* Beacon label overlay */
.beacon-label {
  position: absolute;
  background: rgba(15, 17, 23, 0.9);
  color: var(--text-primary);
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px solid var(--border);
  pointer-events: none;
  white-space: nowrap;
  user-select: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Floor plan overlay */
.floor-plan-overlay {
  position: absolute;
  image-rendering: crisp-edges;
}

.floor-plan-overlay img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}