/**
 * Column Selector Modal Styles
 * Extracted from assets.html inline styles
 */

/* ---- Modal Overlay ---- */
.col-modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s ease;
}
.col-modal-overlay.open { opacity: 1; pointer-events: auto; }

.col-modal {
  background: var(--vn-background);
  border: 1px solid var(--vn-border);
  border-radius: var(--vn-border-radius-lg);
  width: 900px; max-width: 95vw;
  max-height: 80vh;
  display: flex; flex-direction: column;
  box-shadow: var(--vn-shadow-xl);
  transform: scale(0.95); transition: transform 0.2s ease;
}
.col-modal-overlay.open .col-modal { transform: scale(1); }

/* ---- Modal Header ---- */
.col-modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--vn-sp-4) 20px;
  border-bottom: 1px solid var(--vn-glass-border);
}
.col-modal-header h3 {
  font-size: var(--vn-font-body); font-weight: var(--vn-weight-semibold);
  color: var(--vn-text-primary);
}
.col-modal-close {
  background: none; border: none;
  color: var(--vn-text-muted); cursor: pointer;
  padding: var(--vn-sp-1); border-radius: var(--vn-border-radius-md);
}
.col-modal-close:hover { color: var(--vn-text-primary); background: var(--vn-glass-bg-hover); }

.col-modal-body {
  display: flex; flex: 1; overflow: hidden;
  min-height: 0;
}

/* ---- Left Panel — Available Columns ---- */
.col-panel-left {
  flex: 1; display: flex; flex-direction: column;
  min-width: 0;
  border: 1.5px solid var(--vn-border);
  border-radius: var(--vn-border-radius-md);
  background: var(--vn-glass-bg);
}
.col-panel-left-header {
  padding: var(--vn-sp-3) var(--vn-sp-4);
  border-bottom: 1px solid var(--vn-glass-border);
}
.col-panel-left-header h4 {
  font-size: var(--vn-font-small); font-weight: var(--vn-weight-semibold); text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--vn-text-muted); margin-bottom: var(--vn-sp-2);
}
.col-filter-search-row {
  display: flex; gap: 6px; align-items: stretch;
}
.col-search-input {
  width: 100%; padding: 7px 10px 7px 32px;
  background: var(--vn-surface);
  border: 1px solid var(--vn-border);
  border-radius: var(--vn-border-radius-md); color: var(--vn-text-primary);
  font-size: 13px; outline: none;
}
.col-search-input:focus { border-color: var(--vn-accent-primary); }
.col-search-wrap {
  position: relative; flex: 1;
}
.col-search-wrap i,
.col-search-wrap svg {
  position: absolute; left: 9px; top: 50%; transform: translateY(-50%);
  width: 15px; height: 15px; color: var(--vn-text-muted);
  pointer-events: none;
}

/* ---- Custom Source Dropdown ---- */
.col-dropdown { position: relative; min-width: 110px; max-width: 130px; }
.col-dropdown-trigger {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 8px; width: 100%;
  background: transparent;
  border: 1px solid var(--vn-border);
  border-radius: var(--vn-border-radius-md); cursor: pointer;
  color: var(--vn-text-primary); font-size: var(--vn-font-micro);
}
.col-dropdown-trigger:hover { border-color: var(--vn-text-muted); background: var(--vn-glass-bg); }
.col-dropdown-trigger .col-dd-logo { width: 16px; height: 16px; border-radius: 3px; object-fit: contain; flex-shrink: 0; }
.col-dropdown-trigger .col-dd-icon { width: 14px; height: 14px; opacity: 0.6; flex-shrink: 0; }
.col-dropdown-trigger .col-dd-text { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.col-dropdown-trigger .col-dd-arrow { flex-shrink: 0; color: var(--vn-text-muted); transition: transform var(--vn-transition-fast); }
.col-dropdown.open .col-dd-arrow { transform: rotate(180deg); }
.col-dropdown-panel {
  position: absolute; top: calc(100% + 4px); left: 0;
  width: 220px; max-height: 280px;
  background: var(--vn-background);
  border: 1px solid var(--vn-border);
  border-radius: var(--vn-border-radius-md); box-shadow: var(--vn-shadow-lg);
  z-index: 20; display: none; flex-direction: column;
  overflow: hidden;
}
.col-dropdown.open .col-dropdown-panel { display: flex; }
.col-dropdown-search {
  padding: 8px 10px; margin: 6px 6px 4px;
  background: var(--vn-surface);
  border: 1px solid var(--vn-border);
  border-radius: var(--vn-border-radius-sm); color: var(--vn-text-primary);
  font-size: var(--vn-font-small); outline: none;
}
.col-dropdown-search:focus { border-color: var(--vn-accent-primary); }
.col-dropdown-list { overflow-y: auto; padding: 2px 0 6px; flex: 1; }
.col-dropdown-item {
  display: flex; align-items: center; gap: var(--vn-sp-2);
  padding: 6px var(--vn-sp-3); cursor: pointer; font-size: var(--vn-font-small);
  color: var(--vn-text-secondary); transition: background 0.1s;
}
.col-dropdown-item:hover { background: var(--vn-glass-bg-hover); }
.col-dropdown-item.active { background: rgba(167,139,250,0.15); color: var(--vn-text-primary); }
.col-dropdown-item img { width: 18px; height: 18px; border-radius: 3px; object-fit: contain; }
.col-dropdown-item i { width: 18px; height: 18px; opacity: 0.5; }

.col-panel-left-list {
  flex: 1; overflow-y: auto; padding: 4px 0;
}

/* ---- Right Panel — Displayed Columns ---- */
.col-panel-right {
  flex: 1; display: flex; flex-direction: column;
  min-width: 0;
  border: 1.5px solid var(--vn-border);
  border-radius: var(--vn-border-radius-md);
  background: var(--vn-glass-bg);
}
.col-panel-right-header {
  padding: var(--vn-sp-3) var(--vn-sp-4);
  border-bottom: 1px solid var(--vn-glass-border);
}
.col-panel-right-header h4 {
  font-size: var(--vn-font-small); font-weight: var(--vn-weight-semibold); text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--vn-text-muted); margin-bottom: var(--vn-sp-2);
}
.col-panel-right-list {
  flex: 1; overflow-y: auto; padding: 4px 0;
}

/* ---- Transfer Buttons ---- */
.col-transfer-btns {
  display: flex; flex-direction: column; gap: 6px;
  align-items: center; justify-content: center;
  padding: 0 var(--vn-sp-2);
  min-width: 96px;
}
.col-transfer-btn {
  width: 96px; padding: 7px 10px;
  display: flex; align-items: center; justify-content: center;
  gap: 2px;
  background: var(--vn-glass-bg-hover);
  border: 1px solid var(--vn-border);
  border-radius: var(--vn-border-radius-md); cursor: pointer;
  color: var(--vn-text-secondary);
  font-size: var(--vn-font-small); font-weight: var(--vn-weight-medium);
  transition: all var(--vn-transition-fast);
}
.col-transfer-btn:hover {
  background: var(--vn-surface-elevated);
  color: var(--vn-text-primary);
  border-color: var(--vn-text-muted);
}

/* ---- Column Items (shared) ---- */
.col-item {
  display: flex; align-items: center; gap: var(--vn-sp-2);
  padding: 6px var(--vn-sp-3); margin: 1px 6px;
  border-radius: var(--vn-border-radius-md); cursor: pointer;
  font-size: 13px;
  color: var(--vn-text-secondary);
  transition: background 0.1s;
  user-select: none;
}
.col-item:hover { background: var(--vn-glass-bg); }
.col-item:focus { outline: 2px solid var(--vn-accent-primary); outline-offset: -2px; }
.col-item.selected { background: rgba(167,139,250,0.12); color: var(--vn-text-primary); }
.col-item-source {
  font-size: 10px; font-weight: var(--vn-weight-semibold);
  padding: 1px 5px; border-radius: 3px;
  background: var(--vn-glass-bg-hover);
  color: var(--vn-text-muted);
  white-space: nowrap; margin-left: auto;
}

/* ---- Draggable Items (right panel) ---- */
.col-item-right {
  display: flex; align-items: center; gap: var(--vn-sp-2);
  padding: 7px var(--vn-sp-3); margin: 1px 6px;
  border-radius: var(--vn-border-radius-md); cursor: grab;
  font-size: 13px;
  color: var(--vn-text-primary);
  background: var(--vn-glass-bg);
  border: 1px solid transparent;
  transition: all var(--vn-transition-fast);
  user-select: none;
}
.col-item-right:hover { background: var(--vn-glass-bg-hover); border-color: var(--vn-glass-border); }
.col-item-right:focus { outline: 2px solid var(--vn-accent-primary); outline-offset: -2px; }
.col-item-right.dragging { opacity: 0.4; }
.col-item-right .drag-handle {
  color: var(--vn-text-muted); cursor: grab; flex-shrink: 0;
}
.col-item-right .col-item-order {
  font-size: var(--vn-font-micro); font-weight: var(--vn-weight-semibold);
  color: var(--vn-text-muted);
  min-width: 18px; text-align: center;
}
.col-item-right .col-remove-btn {
  margin-left: auto; background: none; border: none;
  color: var(--vn-text-muted); cursor: pointer;
  padding: 2px; border-radius: var(--vn-border-radius-sm);
  display: flex; align-items: center;
}
.col-item-right .col-remove-btn:hover { color: var(--vn-severity-critical); background: rgba(229,115,115,0.15); }

/* ---- Freeze Line ---- */
.col-freeze-line {
  display: flex; align-items: center; gap: var(--vn-sp-2);
  padding: 4px var(--vn-sp-3); margin: 4px 6px;
  font-size: var(--vn-font-micro); font-weight: var(--vn-weight-semibold); text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--vn-info);
}
.col-freeze-line::before,
.col-freeze-line::after {
  content: ''; flex: 1; height: 1px; background: var(--vn-info); opacity: 0.4;
}

/* ---- Drop Indicator ---- */
.col-drop-indicator {
  height: 2px; background: var(--vn-accent-primary);
  margin: 0 6px; border-radius: 1px; transition: opacity 0.1s;
}

/* ---- Group Headers (left panel) ---- */
.col-group-header {
  display: flex; align-items: center; gap: 6px;
  padding: var(--vn-sp-2) var(--vn-sp-3) var(--vn-sp-1);
  font-size: var(--vn-font-micro); font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--vn-text-muted);
  margin-top: 6px;
  border-top: 1px solid var(--vn-glass-border);
}
.col-group-header:first-child { border-top: none; margin-top: 0; }
.col-group-logo { width: 16px; height: 16px; border-radius: 3px; object-fit: contain; }
.col-group-icon { width: 14px; height: 14px; opacity: 0.5; }
.col-group-name { flex-shrink: 0; }
.col-group-count { color: var(--vn-text-muted); font-weight: var(--vn-weight-normal); }

/* ---- Checkbox Indicator ---- */
.col-checkbox {
  width: 16px; height: 16px; min-width: 16px;
  border: 1.5px solid var(--vn-border); border-radius: 3px;
  display: flex; align-items: center; justify-content: center;
  color: transparent; transition: all var(--vn-transition-fast);
}
.col-item.selected .col-checkbox,
.col-item-right.selected .col-checkbox {
  background: var(--vn-accent-primary);
  border-color: var(--vn-accent-primary);
  color: #fff;
}

/* ---- Panel Footer ---- */
.col-panel-footer {
  display: flex; align-items: center; justify-content: flex-start;
  gap: var(--vn-sp-4); padding: var(--vn-sp-2) var(--vn-sp-4);
  border-top: 1px solid var(--vn-glass-border);
}
.col-panel-footer-action {
  font-size: var(--vn-font-small); font-weight: var(--vn-weight-medium);
  color: var(--vn-accent-primary); cursor: pointer;
  background: none; border: none; padding: 0;
}
.col-panel-footer-action:hover { text-decoration: underline; }

/* ---- Modal Footer ---- */
.col-modal-footer {
  display: flex; align-items: center; justify-content: flex-end;
  gap: var(--vn-sp-2);
  padding: var(--vn-sp-3) 20px;
  border-top: 1px solid var(--vn-glass-border);
}

/* ---- Panel Scrollbars ---- */
.col-panel-left-list::-webkit-scrollbar,
.col-panel-right-list::-webkit-scrollbar { width: 5px; }
.col-panel-left-list::-webkit-scrollbar-track,
.col-panel-right-list::-webkit-scrollbar-track { background: transparent; }
.col-panel-left-list::-webkit-scrollbar-thumb,
.col-panel-right-list::-webkit-scrollbar-thumb {
  background: var(--vn-progress-track); border-radius: 3px;
}

/* ---- Toast Notifications ---- */
.col-toast {
  position: absolute; bottom: 56px; left: 50%; transform: translateX(-50%);
  padding: var(--vn-sp-2) 18px; border-radius: var(--vn-border-radius-md); font-size: 13px;
  opacity: 0; transition: opacity 0.3s ease; pointer-events: none; z-index: 10;
  box-shadow: var(--vn-shadow-md);
}
.col-toast.visible { opacity: 1; }
.col-toast-warning { background: #92400e; color: #fef3c7; }
.col-toast-success { background: #065f46; color: #d1fae5; }
.col-toast-error { background: #991b1b; color: #fee2e2; }

/* ---- Loading Spinner ---- */
.col-spinner {
  display: inline-block; width: 20px; height: 20px; margin-bottom: var(--vn-sp-2);
  border: 2px solid var(--vn-progress-track); border-top-color: var(--vn-accent-primary);
  border-radius: 50%; animation: col-spin 0.6s linear infinite;
}

/* ---- Save Button Loading State ---- */
.col-save-loading { opacity: 0.7; pointer-events: none; }
.col-save-loading::after {
  content: ''; display: inline-block; width: 12px; height: 12px; margin-left: 6px;
  border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff;
  border-radius: 50%; animation: col-spin 0.6s linear infinite; vertical-align: middle;
}
@keyframes col-spin { to { transform: rotate(360deg); } }