/* canvas.css - Infinite Spatial Thinking Canvas & Ink Interface */

:root {
  --bg-app: #090d16;
  --bg-grid: #0d1322;
  --dot-color: #27354f;
  --card-bg: #1e293b;
  --card-border: #334155;
  --card-header-bg: #182234;
  --card-hover-border: #38bdf8;
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
  --toolbar-bg: rgba(17, 24, 39, 0.85);
  --toolbar-border: rgba(255, 255, 255, 0.1);
  --toolbar-text: #f8fafc;
  --accent-blue: #38bdf8;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-emerald: #10b981;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-family);
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

#app-container {
  width: 100vw;
  height: 100vh;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Floating Toolbar */
#toolbar {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--toolbar-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--toolbar-border);
  padding: 6px 12px;
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
  transition: all 0.2s ease;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-group {
  padding: 0 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-group .logo {
  font-size: 18px;
}

.brand-group .title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: #fff;
}

.toolbar-divider {
  width: 1px;
  height: 22px;
  background: rgba(255, 255, 255, 0.12);
  margin: 0 4px;
}

.tool-btn, .action-btn, .icon-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.tool-btn:hover, .action-btn:hover, .icon-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

.tool-btn.active {
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #fff;
  border-color: #38bdf8;
  box-shadow: 0 2px 10px rgba(2, 132, 199, 0.4);
}

.icon-btn {
  padding: 6px 8px;
  min-width: 28px;
  justify-content: center;
}

.zoom-text {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-blue);
  min-width: 44px;
  text-align: center;
  cursor: pointer;
}

.file-label {
  cursor: pointer;
}

/* Viewport Area */
#viewport-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* Infinite Dot Grid */
#grid-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background-color: var(--bg-app);
  background-image: radial-gradient(var(--dot-color) 1.5px, transparent 1.5px);
  background-size: 32px 32px;
  background-position: 0 0;
}

/* World Cards Layer */
#world-cards-layer {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: 0 0;
  pointer-events: none; /* Cards have pointer-events: auto */
}

/* Quote Card Component */
.canvas-card {
  position: absolute;
  pointer-events: auto;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  user-select: text;
  -webkit-user-select: text;
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}

.canvas-card:hover {
  border-color: var(--card-hover-border);
  box-shadow: 0 14px 30px -4px rgba(0, 0, 0, 0.7), 0 0 15px rgba(56, 189, 248, 0.2);
}

.canvas-card.dragging {
  opacity: 0.92;
  cursor: grabbing !important;
  box-shadow: 0 20px 40px -4px rgba(0, 0, 0, 0.8), 0 0 20px rgba(56, 189, 248, 0.4);
  z-index: 1000 !important;
}

.canvas-card-header {
  padding: 8px 12px;
  background: var(--card-header-bg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  border-top-left-radius: inherit;
  border-top-right-radius: inherit;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: grab;
  user-select: none;
}

.card-header-left {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow: hidden;
}

.card-source-link {
  color: var(--accent-blue);
  text-decoration: none;
  font-size: 11px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  max-width: 180px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-source-link:hover {
  text-decoration: underline;
}

.card-header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.card-time {
  font-size: 10px;
  color: var(--text-dim);
}

.btn-card-close {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 12px;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
}

.btn-card-close:hover {
  color: var(--accent-rose);
  background: rgba(244, 63, 94, 0.15);
}

.canvas-card-body {
  padding: 14px;
  font-size: 13.5px;
  line-height: 1.6;
  color: #f8fafc;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Ink Canvas */
#ink-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: auto;
  touch-action: none;
}

/* Status Bar */
#status-bar {
  position: absolute;
  bottom: 12px;
  left: 16px;
  right: 16px;
  z-index: 90;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
}

.status-left, .status-right {
  display: flex;
  gap: 8px;
}

.status-pill {
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

.hint-pill {
  color: var(--accent-emerald);
}

/* Cursor states */
.cursor-select { cursor: default; }
.cursor-pen { cursor: crosshair; }
.cursor-highlighter { cursor: crosshair; }
.cursor-eraser { cursor: cell; }
.cursor-panning { cursor: grab; }
.cursor-panning-active { cursor: grabbing !important; }