/* ============================================================
   COMPONENTS — buttons, tooltips, file picker, etc.
   Reusable visual elements.
   ============================================================ */

/* ---- Brand (top-left logo + name) ---- */
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
  background-color: color-mix(in srgb, var(--bg-panel) 85%, transparent);
}

.brand-mark {
  width: 18px; height: 18px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 60%, white));
  flex-shrink: 0;
}

.brand-name {
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

/* ---- File picker ---- */
.file-picker {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
  background-color: color-mix(in srgb, var(--bg-panel) 85%, transparent);
}

.file-picker label {
  cursor: pointer;
  color: var(--accent);
  font-weight: 500;
  transition: color 0.15s;
}

.file-picker label:hover {
  color: color-mix(in srgb, var(--accent) 70%, white);
}

.file-picker input[type="file"] { display: none; }

.file-name {
  color: var(--text-secondary);
  font-size: 12px;
  max-width: 240px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---- Toolbar buttons ---- */
.tool-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
}

.tool-btn:hover {
  background: var(--bg-panel-hover);
  color: var(--text-primary);
}

.tool-btn.active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

.tool-btn svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---- Tooltips on toolbar buttons ---- */
.tool-btn::after {
  content: attr(data-tip);
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  padding: 5px 9px;
  background: var(--bg-panel);
  color: var(--text-primary);
  font-size: 11.5px;
  font-weight: 500;
  border: 1px solid var(--border-subtle);
  border-radius: 5px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease 0.3s;
  box-shadow: var(--shadow-soft);
  z-index: 100;
}

.tool-btn::before {
  content: '';
  position: absolute;
  left: calc(100% + 4px);
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 6px; height: 6px;
  background: var(--bg-panel);
  border-left: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease 0.3s;
  z-index: 99;
}

.tool-btn:hover::after,
.tool-btn:hover::before { opacity: 1; }

/* ---- Status bar (current tool + readout) ---- */
.status-mode {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.status-mode-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

.status-readout {
  color: var(--text-secondary);
  font-size: 12.5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.status-readout strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ---- Right panel toggle button (chevron arrow) ---- */
#panel-toggle svg {
  width: 14px; height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.2s;
}

body.panel-open #panel-toggle svg {
  transform: rotate(180deg);
}

/* ---- Right panel content ---- */
.panel-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.panel-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-tertiary);
  text-align: center;
  gap: 12px;
  padding: 40px 20px;
}

.panel-empty-icon {
  width: 32px; height: 32px;
  color: var(--text-tertiary);
  opacity: 0.6;
}

.panel-empty-text {
  font-size: 12.5px;
  line-height: 1.5;
}

/* ---- Spinner (in loading overlay) ---- */
.spinner {
  width: 14px; height: 14px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---- Mobile: hide tooltips ---- */
@media (max-width: 600px) {
  .tool-btn::after, .tool-btn::before { display: none; }
}

/* Temporary rotate mode (Space held) overrides tool-specific cursors */
body.rotating #canvas-container { cursor: grab !important; }
body.rotating.dragging #canvas-container { cursor: grabbing !important; }

/* ============================================================
   VIEWPORT GIZMO — bottom-right navigation widget
   Arrow buttons around the gizmo's 3D axis indicator.
   ============================================================ */

.gizmo-arrow {
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: 5px;
  color: var(--text-secondary);
  font-size: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
  padding: 0;
  line-height: 1;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(8px);
  background-color: color-mix(in srgb, var(--bg-panel) 80%, transparent);
}

.gizmo-arrow:hover {
  background: var(--bg-panel-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.gizmo-arrow:active {
  transform: scale(0.92);
}

#viewport-gizmo {
  /* Subtle backdrop behind the canvas to make labels readable on light models */
  border-radius: 50%;
}


/* ============================================================
   VIEWPORT GIZMO — bottom-right navigation widget
   Arrow buttons around the gizmo's 3D axis indicator.
   ============================================================ */

   .gizmo-arrow {
    background: var(--bg-panel);
    border: 1px solid var(--border-subtle);
    border-radius: 5px;
    color: var(--text-secondary);
    font-size: 10px;
    cursor: pointer;
    transition: all 0.15s ease;
    padding: 0;
    line-height: 1;
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(8px);
    background-color: color-mix(in srgb, var(--bg-panel) 80%, transparent);
  }
  
  .gizmo-arrow:hover {
    background: var(--bg-panel-hover);
    color: var(--text-primary);
    border-color: var(--border-strong);
  }
  
  .gizmo-arrow:active {
    transform: scale(0.92);
  }
  
  #viewport-gizmo {
    /* Subtle backdrop behind the canvas to make labels readable on light models */
    border-radius: 50%;
    z-index: 5;
  }