/* ─── Slide-over Panel ─────────────────────────────────────── */
#detail-panel {
  position: fixed;
  top: var(--topbar-height);
  right: 0;
  width: var(--panel-width);
  height: calc(100vh - var(--topbar-height));
  background: var(--surface);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  z-index: 50;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

#detail-panel.open { transform: translateX(0); }

.panel-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.panel-header h2 {
  font-size: 15px;
  font-weight: 700;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.panel-close-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  font-size: 16px;
  transition: all 0.15s;
}

.panel-close-btn:hover { background: var(--surface-2); color: var(--text); }

.panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

/* Item detail view */
.detail-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.detail-section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.detail-badges {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.detail-description {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.detail-notes {
  background: var(--visibility-internal-bg);
  border: 1px solid rgba(168, 85, 247, 0.2);
  border-radius: var(--radius);
  padding: 12px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.detail-notes-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--visibility-internal);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.detail-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.detail-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--accent-hover);
  text-decoration: none;
  transition: all 0.15s;
}

.detail-link:hover {
  background: var(--surface-3);
  border-color: var(--accent);
}

.detail-link svg { width: 12px; height: 12px; flex-shrink: 0; }

/* Item form */
.item-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.tags-input-container {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-height: 38px;
  align-items: center;
  cursor: text;
  transition: border-color 0.15s;
}

.tags-input-container:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-subtle);
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  cursor: default;
}

.tag-chip .remove-tag {
  cursor: pointer;
  opacity: 0.6;
  background: none;
  border: none;
  color: inherit;
  padding: 0;
  font-size: 12px;
  line-height: 1;
}
.tag-chip .remove-tag:hover { opacity: 1; }

.link-item {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 6px;
  align-items: center;
}

/* ─── Export Dialog ────────────────────────────────────────── */
#export-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

#export-overlay.open { display: flex; }

.export-dialog {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 480px;
  max-width: 90vw;
  overflow: hidden;
}

.dialog-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dialog-header h2 { font-size: 16px; font-weight: 700; }

.dialog-body { padding: 24px; display: flex; flex-direction: column; gap: 20px; }

.dialog-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.format-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.format-checkbox {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
}

.format-checkbox:hover { border-color: var(--accent); background: var(--accent-subtle); }
.format-checkbox.checked { border-color: var(--accent); background: var(--accent-subtle); }
.format-checkbox input[type="checkbox"] { display: none; }
.format-checkbox .format-icon { font-size: 20px; }
.format-checkbox .format-name { font-size: 12px; font-weight: 600; }
.format-checkbox .format-desc { font-size: 10px; color: var(--text-muted); }

/* ─── Settings Panel ───────────────────────────────────────── */
#settings-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

#settings-overlay.open { display: flex; }

.settings-dialog {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 520px;
  max-width: 90vw;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.settings-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  gap: 0;
}

.settings-tab {
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  border: none;
  background: transparent;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition: all 0.15s;
}

.settings-tab:hover { color: var(--text); }
.settings-tab.active { color: var(--accent-hover); border-bottom-color: var(--accent); }

.settings-body { flex: 1; overflow-y: auto; padding: 24px; }
.settings-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }

.settings-section {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.settings-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--surface-2);
  cursor: pointer;
  user-select: none;
}

.settings-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.settings-section-body {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--border);
}

.settings-section-body.hidden { display: none; }

.toggle-switch {
  position: relative;
  width: 36px;
  height: 20px;
  flex-shrink: 0;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-track {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: var(--surface-3);
  border: 1px solid var(--border);
  transition: background 0.2s, border-color 0.2s;
  cursor: pointer;
}
.toggle-track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: transform 0.2s, background 0.2s;
}
.toggle-switch input:checked + .toggle-track { background: var(--accent); border-color: var(--accent); }
.toggle-switch input:checked + .toggle-track::after { transform: translateX(16px); background: #fff; }

.sync-adapter-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}

.adapter-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
}

.adapter-option:hover { border-color: var(--accent); background: var(--accent-subtle); }
.adapter-option.selected { border-color: var(--accent); background: var(--accent-subtle); }
.adapter-option .adapter-icon { font-size: 22px; }
.adapter-option .adapter-name { font-size: 12px; font-weight: 600; }
.adapter-option .adapter-desc { font-size: 10px; color: var(--text-muted); }
.adapter-fields { display: flex; flex-direction: column; gap: 12px; }
.adapter-fields.hidden { display: none; }

.info-box {
  padding: 10px 12px;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

.info-box.warning {
  background: rgba(234, 179, 8, 0.08);
  border-color: rgba(234, 179, 8, 0.25);
}

/* ─── Import overlay ───────────────────────────────────────── */
#import-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

#import-overlay.open { display: flex; }

.import-dialog {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 540px;
  max-width: 90vw;
  overflow: hidden;
}

.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
  color: var(--text-muted);
}

.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent);
  background: var(--accent-subtle);
  color: var(--accent-hover);
}

.drop-zone .drop-icon { font-size: 32px; margin-bottom: 8px; }
.drop-zone p { font-size: 13px; }
.drop-zone span { font-size: 12px; color: var(--text-faint); }

.import-error {
  padding: 10px 12px;
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  border-radius: var(--radius);
  font-size: 12px;
  color: #ef4444;
  display: none;
}

.import-error.visible { display: block; }

/* ─── Mobile / Responsive ──────────────────────────────────── */
@media (max-width: 768px) {
  /* Detail panel: full width slide-over */
  #detail-panel {
    width: 100%;
    top: var(--topbar-height);
  }

  /* Form rows: single column */
  .form-row,
  .form-row-3 {
    grid-template-columns: 1fr;
  }

  .link-item {
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
  }
  .link-item > *:first-child { grid-column: 1 / -1; }

  /* Dialogs: full width on small screens */
  .export-dialog,
  .settings-dialog,
  .import-dialog {
    width: 100%;
    max-width: 100%;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    margin: 0;
  }

  #export-overlay,
  #settings-overlay,
  #import-overlay {
    align-items: flex-end;
  }

  .settings-dialog {
    max-height: 85vh;
  }

  /* Format grid: 2 columns on mobile */
  .format-grid { grid-template-columns: repeat(2, 1fr); }

  /* Sync adapter: 2 columns */
  .sync-adapter-selector { grid-template-columns: repeat(2, 1fr); }

  /* Toast: full width at bottom */
  #toast-container {
    bottom: 16px;
    right: 12px;
    left: 12px;
  }
  .toast { max-width: 100%; }
}

/* ─── Progress bar for export ──────────────────────────────── */
.progress-bar {
  height: 4px;
  background: var(--surface-3);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s;
}