/* ============================================================
   Geometry Board - Liquid Glass Dark Theme
   ============================================================ */

@keyframes borderShift {
  0%   { border-color: rgba(124, 131, 255, 0.5); }
  25%  { border-color: rgba(77, 255, 255, 0.5); }
  50%  { border-color: rgba(196, 77, 255, 0.5); }
  75%  { border-color: rgba(255, 107, 157, 0.5); }
  100% { border-color: rgba(124, 131, 255, 0.5); }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 8px rgba(124, 131, 255, 0.15), inset 0 0 8px rgba(124, 131, 255, 0.03); }
  33%      { box-shadow: 0 0 10px rgba(77, 255, 255, 0.15), inset 0 0 8px rgba(77, 255, 255, 0.03); }
  66%      { box-shadow: 0 0 10px rgba(196, 77, 255, 0.15), inset 0 0 8px rgba(196, 77, 255, 0.03); }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes bgShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

:root {
  --toolbar-width: 140px;
  --sidebar-width: 220px;
  --status-height: 28px;
  --bg: #0E0E1A;
  --bg-surface: rgba(255, 255, 255, 0.03);
  --border: rgba(255, 255, 255, 0.08);
  --text: #E8E8F0;
  --text-secondary: #8888A8;
  --accent: #7C83FF;
  --accent-hover: #9A9FFF;
  --tool-active-bg: rgba(124, 131, 255, 0.15);
  --tool-hover: rgba(255, 255, 255, 0.06);
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  --radius: 10px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: #1a1a2e;
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

/* ---- Background ambient glow ---- */
body::before {
  content: '';
  position: fixed;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(124, 131, 255, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(77, 255, 255, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(196, 77, 255, 0.02) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
  background-size: 200% 200%;
  animation: bgShift 15s ease infinite;
}

#main-content,
#status-bar {
  position: relative;
  z-index: 1;
}

/* ---- Main Content ---- */
#main-content {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0;
  position: relative;
}

/* ---- Panel Resize Handles ---- */
.resize-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 7px;
  cursor: col-resize;
  z-index: 30;
  transition: background 0.15s;
}

.resize-handle:hover,
.resize-handle.dragging {
  background: rgba(124, 131, 255, 0.28);
}

#toolbar-resize { left: calc(var(--toolbar-width) - 3px); }
#sidebar-resize { right: calc(var(--sidebar-width) - 3px); }

/* ---- Left Toolbar ---- */
#left-toolbar {
  width: var(--toolbar-width);
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 0;
  gap: 2px;
  overflow-y: auto;
  overflow-x: visible;
  flex-shrink: 0;
  z-index: 20;
  scrollbar-width: none;
}

.tool-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: 100%;
}

.tool-section-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  margin-top: 12px;
  margin-bottom: 5px;
  text-align: center;
  width: 100%;
}

.tool-section:first-child .tool-section-title {
  margin-top: 0;
}

.tool-group {
  display: grid;
  /* 列数随栏宽自适应：拉宽工具栏时按钮自动重排成更多列 */
  grid-template-columns: repeat(auto-fill, minmax(58px, 1fr));
  gap: 6px;
  width: 100%;
  padding: 0 4px;
  justify-items: center;
}

.tool-spacer {
  flex: 1;
  min-height: 4px;
}

.tool-btn {
  width: 58px;
  height: 40px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.tool-btn::before {
  content: '';
  position: absolute;
  top: 0; left: -100%; width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.06), transparent);
  transition: left 0.5s ease;
}

.tool-btn:hover::before { left: 100%; }

.tool-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
  box-shadow: 0 0 14px rgba(124, 131, 255, 0.15);
}

.tool-btn.active {
  background: linear-gradient(135deg, rgba(124, 131, 255, 0.2), rgba(196, 77, 255, 0.2));
  border-color: rgba(124, 131, 255, 0.3);
  color: var(--accent);
  animation: none;
  box-shadow: 0 0 12px rgba(124, 131, 255, 0.2);
}

.tool-btn:active {
  transform: scale(0.93);
}

/* ---- Canvas ---- */
#canvas-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: #0E0E1A;
  min-width: 0;
}

#main-canvas {
  display: block;
  cursor: crosshair;
}

#coord-display {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.08);
  pointer-events: none;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* ---- Right Sidebar ---- */
#right-sidebar {
  width: var(--sidebar-width);
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  overflow-y: auto;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.sidebar-section {
  padding: 14px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-section h3 {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 10px;
  letter-spacing: 0.8px;
}

.style-row {
  margin-bottom: 8px;
}

.style-row label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 3px;
}

.style-row input[type="color"] {
  width: 28px;
  height: 22px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 4px;
  cursor: pointer;
  padding: 1px;
  background: transparent;
}

.style-row input[type="range"] {
  width: 100%;
  height: 4px;
  cursor: pointer;
  accent-color: var(--accent);
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
}

.style-row select {
  width: 100%;
  padding: 5px 6px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  cursor: pointer;
  outline: none;
}

.style-row select:focus {
  border-color: rgba(124, 131, 255, 0.4);
}

.style-row span {
  font-size: 12px;
  color: var(--text-secondary);
  float: right;
}

/* ---- Object List ---- */
.object-list-section {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  border-bottom: none !important;
}

#object-list {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

.empty-hint {
  font-size: 12px;
  color: rgba(136, 136, 168, 0.5);
  font-style: italic;
  text-align: center;
  padding: 16px 0;
}

.object-item {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 6px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  margin-bottom: 1px;
  transition: background 0.15s;
  color: var(--text-secondary);
}

.object-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.object-item.selected {
  background: rgba(124, 131, 255, 0.15);
  color: var(--accent);
}

.object-item .obj-icon {
  width: 14px;
  text-align: center;
  font-size: 12px;
  flex-shrink: 0;
}

.object-item .obj-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.object-item .obj-delete {
  width: 16px;
  height: 16px;
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.2);
  cursor: pointer;
  font-size: 11px;
  border-radius: 3px;
  display: none;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  line-height: 1;
}

.object-item:hover .obj-delete {
  display: flex;
}

.object-item .obj-delete:hover {
  background: rgba(255, 80, 80, 0.2);
  color: #ff5c5c;
}

/* ---- Status Bar ---- */
#status-bar {
  height: var(--status-height);
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  font-size: 11px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

/* ---- Modals ---- */
.hidden {
  display: none !important;
}

#modal-overlay, #text-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background: rgba(30, 30, 50, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 24px;
  width: 380px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 20px rgba(124, 131, 255, 0.1);
  animation: glowPulse 6s ease infinite;
}

.modal h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--text);
  background: linear-gradient(90deg, #E8E8F0, #7C83FF, #4DFFFF);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 6s linear infinite;
}

.modal-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.4;
}

.modal input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  font-size: 14px;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  outline: none;
  transition: all 0.3s ease;
}

.modal input[type="text"]::placeholder {
  color: rgba(136, 136, 168, 0.5);
}

.modal input[type="text"]:focus {
  border-color: rgba(124, 131, 255, 0.5);
  box-shadow: 0 0 14px rgba(124, 131, 255, 0.2);
}

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

.modal-buttons button {
  padding: 8px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  font-size: 12px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.25s ease;
  font-family: inherit;
}

#btn-func-ok, #btn-text-ok {
  background: linear-gradient(135deg, rgba(124, 131, 255, 0.3), rgba(196, 77, 255, 0.3));
  border-color: rgba(124, 131, 255, 0.4);
  color: #fff;
}

#btn-func-ok:hover, #btn-text-ok:hover {
  background: linear-gradient(135deg, rgba(124, 131, 255, 0.5), rgba(196, 77, 255, 0.5));
  box-shadow: 0 0 16px rgba(124, 131, 255, 0.3);
}

#btn-func-cancel, #btn-text-cancel {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
}

#btn-func-cancel:hover, #btn-text-cancel:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ---- Export Modal ---- */
.export-options {
  margin: 12px 0;
}

.export-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.export-row > label:first-child {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 600;
}

.export-format-group {
  display: flex;
  gap: 4px;
}

.export-format-btn {
  padding: 6px 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.export-format-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

.export-format-btn.active {
  background: linear-gradient(135deg, rgba(124, 131, 255, 0.25), rgba(196, 77, 255, 0.25));
  border-color: rgba(124, 131, 255, 0.4);
  color: var(--accent);
}

.export-checkbox {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 12px;
  color: var(--text);
}

.export-checkbox input[type="checkbox"] {
  accent-color: var(--accent);
  width: 14px;
  height: 14px;
}

/* ---- Scrollbar ---- */
#left-toolbar::-webkit-scrollbar { display: none; }

::-webkit-scrollbar {
  width: 4px;
  height: 4px;
}

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

::-webkit-scrollbar-thumb {
  background: rgba(124, 131, 255, 0.2);
  border-radius: 2px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(124, 131, 255, 0.4);
}

/* ---- Tooltip ---- */
#js-tooltip {
  background: rgba(20, 20, 40, 0.95) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(124, 131, 255, 0.3);
  border-radius: 6px;
  color: var(--text) !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  #right-sidebar { display: none; }
  #left-toolbar { width: 70px; }
  .tool-btn { width: 40px; height: 34px; font-size: 14px; }
  .tool-group { grid-template-columns: repeat(auto-fill, minmax(40px, 1fr)); }
  .resize-handle { display: none; }
}