/* ===== Design System ===== */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f7f9fc;
  --bg-sidebar: #fafbfe;
  --border-color: #c8d8ec;
  --grid-color: rgba(160, 195, 235, 0.3);
  --grid-color-strong: rgba(120, 165, 215, 0.15);
  --accent: #4a8acf;
  --accent-hover: #3a72b3;
  --text-primary: #2c3e50;
  --text-secondary: #6b7c93;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --radius: 8px;
  --radius-sm: 4px;
  --transition: 0.2s ease;
  --font-family: 'Segoe UI', 'Meiryo', sans-serif;
}

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

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

/* ===== App Layout ===== */
#app {
  display: flex;
  height: 100vh;
  width: 100vw;
}

/* ===== Left Sidebar (Floating Panel) ===== */
#sidebar-left {
  width: 240px;
  min-width: 240px;
  max-height: 80vh;
  background: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: fixed;
  top: 80px;
  left: 16px;
  z-index: 900;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
}

.floating-panel-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  background: var(--accent);
  color: #fff;
  cursor: grab;
  user-select: none;
  border-radius: 8px 8px 0 0;
  font-size: 12px;
  font-weight: 600;
}

.floating-panel-titlebar:active {
  cursor: grabbing;
}

.floating-panel-title {
  font-size: 12px;
}

.floating-panel-close {
  background: none;
  border: none;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  padding: 0 4px;
  opacity: 0.8;
  transition: opacity 0.15s;
}

.floating-panel-close:hover {
  opacity: 1;
}

#sidebar-left .panel-header {
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

#sidebar-left .panel-header h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

#person-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.person-item {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
  font-size: 14px;
}

.person-item:hover {
  background: rgba(74, 138, 207, 0.08);
}

.person-item.selected {
  background: rgba(74, 138, 207, 0.15);
  font-weight: 600;
}

.person-item .color-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

.region-tree-header {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  font-size: 14px;
  font-weight: 600;
  color: #4a8acf;
  cursor: pointer;
  border-radius: var(--radius-sm);
  user-select: none;
}

.region-tree-header:hover {
  background: rgba(74, 138, 207, 0.06);
}

.region-tree-header .tree-icon {
  font-size: 8px;
  width: 10px;
  text-align: center;
  flex-shrink: 0;
}

.tree-children {
  padding-left: 12px;
  border-left: 1px solid rgba(74, 138, 207, 0.15);
  margin-left: 8px;
}

.tree-unaffiliated-header {
  padding: 3px 8px;
  font-size: 9px;
  color: #999;
  font-style: italic;
}

/* ===== Menu Bar ===== */
#menubar {
  display: flex;
  align-items: stretch;
  height: 28px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 4px;
  gap: 0;
  font-size: 13px;
  overflow: visible;
  position: relative;
  z-index: 2001;
}

.menu-item {
  position: relative;
  display: inline-block;
}

.menu-btn {
  background: none;
  border: none;
  padding: 4px 12px;
  font-size: 13px;
  font-family: var(--font-family);
  color: var(--text-primary);
  cursor: pointer;
  border-radius: 3px;
  transition: background 0.15s;
}

.menu-btn:hover {
  background: rgba(74, 138, 207, 0.12);
}

.menu-dropdown {
  display: none !important;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  padding: 4px 0;
  z-index: 2000;
}

.menu-item:hover > .menu-dropdown {
  display: block !important;
}

.menu-action {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 6px 16px;
  background: none;
  border: none;
  font-size: 13px;
  font-family: var(--font-family);
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
  transition: background 0.12s;
}

.menu-action:hover {
  background: rgba(74, 138, 207, 0.1);
}

.menu-shortcut {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-secondary);
  padding-left: 24px;
}

.menu-divider {
  height: 1px;
  background: var(--border-color);
  margin: 4px 8px;
}

/* ===== Canvas Area ===== */
#canvas-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
}

#toolbar {
  height: 44px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 8px;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 8px;
}

.toolbar-group+.toolbar-group {
  border-left: 1px solid var(--border-color);
}

.toolbar-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-right: 4px;
  user-select: none;
}

#canvas-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  cursor: default;
}

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

/* ===== Right Panel (Floating) ===== */
#sidebar-right {
  width: 240px;
  min-width: 240px;
  max-height: 80vh;
  background: var(--bg-sidebar);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: fixed;
  top: 80px;
  right: 16px;
  z-index: 900;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
}

#sidebar-right .panel-header {
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
}

#sidebar-right .panel-header h2 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

#property-content {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
}

.prop-group {
  margin-bottom: 16px;
}

.prop-label {
  font-size: 14px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.prop-input {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-family: var(--font-family);
  color: var(--text-primary);
  background: var(--bg-primary);
  outline: none;
  transition: border-color var(--transition);
}

.prop-input:focus {
  border-color: var(--accent);
}

.prop-color-input {
  width: 100%;
  height: 32px;
  padding: 2px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--bg-primary);
}

#no-selection-msg {
  color: var(--text-secondary);
  font-size: 16px;
  text-align: center;
  padding: 24px 16px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 5px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
  white-space: nowrap;
}

.btn:hover {
  background: var(--bg-secondary);
  border-color: var(--accent);
}

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

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

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-icon {
  padding: 5px 8px;
  font-size: 18px;
}

.btn-danger {
  color: #e74c3c;
  border-color: #e74c3c;
}

.btn-danger:hover {
  background: #e74c3c;
  color: #fff;
}

.toolbar-zoom {
  margin-left: auto;
}

.toolbar-sep {
  width: 1px;
  height: 20px;
  background: var(--border-color);
  margin: 0 2px;
}

.zoom-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  min-width: 36px;
  text-align: center;
  user-select: none;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

/* ===== Modal ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.show {
  display: flex;
}

.modal-panel {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.18);
  padding: 24px;
  width: 520px;
  max-width: 90vw;
  max-height: 85vh;
  overflow-y: auto;
  animation: modalIn 0.2s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.97);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.modal-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.modal-textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: var(--font-family);
  color: var(--text-primary);
  background: var(--bg-secondary);
  resize: vertical;
  outline: none;
  transition: border-color var(--transition);
  line-height: 1.6;
}

.modal-textarea:focus {
  border-color: var(--accent);
}

.modal-section {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.modal-subtitle {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}

.modal-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.modal-label {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.modal-input-sm {
  width: 60px;
  padding: 4px 6px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: var(--font-family);
  text-align: center;
  outline: none;
}

.modal-input-sm:focus {
  border-color: var(--accent);
}

.modal-actions {
  margin-top: 16px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ===== Role List (in modal) ===== */
.role-list {
  max-height: 250px;
  overflow-y: auto;
  margin-bottom: 8px;
}

.role-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-bottom: 1px solid rgba(200, 216, 236, 0.4);
  gap: 8px;
}

.role-list-item:last-child {
  border-bottom: none;
}

.role-badge-preview {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px 8px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}

.role-item-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.role-color-edit {
  width: 28px;
  height: 24px;
  padding: 1px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--bg-primary);
}

.role-icon-edit {
  padding: 3px 4px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 12px;
  background: var(--bg-primary);
  cursor: pointer;
  outline: none;
}

.role-delete-btn {
  padding: 3px 6px !important;
  font-size: 11px !important;
}

.role-add-color-input {
  width: 32px;
  height: 30px;
  padding: 1px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--bg-primary);
}

.role-add-icon-select {
  padding: 5px 6px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 13px;
  background: var(--bg-primary);
  cursor: pointer;
  outline: none;
}

/* ===== Role Checkboxes in Property Panel ===== */
#prop-roles-container {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.role-checkbox-item {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 12px;
}

.role-checkbox-item input[type="checkbox"] {
  accent-color: var(--accent);
  cursor: pointer;
}

.role-badge-mini {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px 6px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid;
}

/* ===== Z-Order Buttons ===== */
.zorder-buttons {
  display: flex;
  gap: 4px;
}

.btn-sm {
  padding: 3px 8px;
  font-size: 14px;
  min-width: 28px;
}

/* ===== Search Bar ===== */
.search-bar {
  padding: 4px 8px;
  border-bottom: 1px solid var(--border-color);
}

.search-input {
  width: 100%;
  padding: 4px 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition);
}

.search-input:focus {
  border-color: var(--accent);
}

.person-item.search-highlight {
  background: rgba(255, 200, 50, 0.3);
  font-weight: 700;
}

/* ===== Dark Mode ===== */
body.dark-mode {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-sidebar: #1a1a2e;
  --border-color: #2a2a4a;
  --grid-color: rgba(100, 130, 180, 0.15);
  --grid-color-strong: rgba(100, 130, 180, 0.08);
  --accent: #5d9cec;
  --accent-hover: #4a8ad8;
  --text-primary: #e0e0e0;
  --text-secondary: #8899aa;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
}

body.dark-mode .btn {
  background: #2a2a4a;
  color: #e0e0e0;
  border-color: #3a3a5a;
}

body.dark-mode .btn:hover {
  background: #3a3a5a;
}

body.dark-mode .btn.active {
  background: #5d9cec;
  color: #fff;
}

body.dark-mode .prop-input,
body.dark-mode .search-input {
  background: #2a2a4a;
  color: #e0e0e0;
  border-color: #3a3a5a;
}

body.dark-mode .modal-overlay {
  background: rgba(0, 0, 0, 0.7);
}

body.dark-mode .modal-panel {
  background: #1a1a2e;
  color: #e0e0e0;
}

body.dark-mode .modal-textarea {
  background: #2a2a4a;
  color: #e0e0e0;
  border-color: #3a3a5a;
}

body.dark-mode #menubar {
  background: #16213e;
}

body.dark-mode .menu-btn {
  color: #e0e0e0;
}

body.dark-mode .menu-btn:hover {
  background: rgba(93, 156, 236, 0.15);
}

body.dark-mode .menu-dropdown {
  background: #1a1a2e;
  border-color: #3a3a5a;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

body.dark-mode .menu-action {
  color: #e0e0e0;
}

body.dark-mode .menu-action:hover {
  background: rgba(93, 156, 236, 0.12);
}

body.dark-mode .menu-divider {
  background: #3a3a5a;
}

/* ===== Print Layout ===== */
@media print {

  #sidebar-left,
  #sidebar-right,
  #toolbar,
  #menubar {
    display: none !important;
  }

  #canvas-area {
    margin: 0 !important;
  }

  #canvas-container {
    width: 100% !important;
    height: 100% !important;
  }

  body {
    overflow: visible !important;
  }
}

/* ===== Layer Panel ===== */
.sidebar-separator {
  height: 1px;
  background: var(--border-color);
  margin: 8px 0;
}

#layer-list {
  padding: 0 8px 8px;
  max-height: 200px;
  overflow-y: auto;
}

.layer-item {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 6px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  user-select: none;
  transition: background 0.15s;
}

.layer-item:hover {
  background: var(--hover-bg);
}

.layer-item.active {
  background: rgba(74, 138, 207, 0.15);
  font-weight: 600;
}

.layer-item .layer-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 14px;
  padding: 0 2px;
  opacity: 0.7;
  transition: opacity 0.15s;
}

.layer-item .layer-toggle:hover {
  opacity: 1;
}

.layer-item .layer-toggle.off {
  opacity: 0.3;
}

.layer-item .layer-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.layer-item .layer-name-input {
  flex: 1;
  font-size: 12px;
  padding: 1px 4px;
  border: 1px solid var(--primary-color);
  border-radius: 3px;
  outline: none;
}

/* ===== Tab Bar ===== */
#tab-bar {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px 8px 0;
  background: var(--sidebar-bg);
  border-bottom: 1px solid var(--border-color);
  min-height: 30px;
}

#tab-list {
  display: flex;
  gap: 2px;
  overflow-x: auto;
  flex: 1;
}

.tab-item {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: var(--hover-bg);
  border: 1px solid var(--border-color);
  border-bottom: none;
  border-radius: 6px 6px 0 0;
  cursor: pointer;
  font-size: 12px;
  white-space: nowrap;
  user-select: none;
  transition: background 0.15s;
  max-width: 150px;
}

.tab-item:hover {
  background: #fff;
}

.tab-item.active {
  background: #fff;
  font-weight: 600;
  border-bottom: 2px solid #fff;
  margin-bottom: -1px;
}

.tab-item .tab-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 10px;
  padding: 0 2px;
  opacity: 0.5;
  line-height: 1;
}

.tab-item .tab-close:hover {
  opacity: 1;
  color: #e06c75;
}

.tab-item .tab-name {
  overflow: hidden;
  text-overflow: ellipsis;
}

.tab-add-btn {
  font-size: 14px !important;
  padding: 2px 6px !important;
  min-width: 24px;
}