/* ============================================================================
   ACCESSIBILITY CONVENTIONS (Phase 6)
   ============================================================================
   Focus Indicators:
   - All interactive elements (.btn, .nav-item, .tab, input, select) must have
     visible focus outlines using :focus-visible pseudo-class
   - Focus outline: 2px solid var(--accent-color) with 2px offset
   - High contrast maintained for keyboard navigation visibility

   ARIA Attributes:
   - Modals: role="dialog", aria-modal="true", aria-labelledby for title
   - Navigation: role="navigation" with aria-label for context
   - Toolbars: role="toolbar" with aria-label for purpose
   - Live regions: aria-live="polite" for dynamic content updates
   - Icon-only buttons: Must include aria-label describing the action

   Semantic HTML:
   - Use <aside> for sidebar, <main> for primary content, <nav> for navigation
   - Ensure proper heading hierarchy (h1 → h2 → h3)
   - Form inputs must have associated <label> elements
   ============================================================================ */

/* Main Content */
.main-content {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.page {
    display: none;
    flex-direction: column;
    flex: 1;
    padding: 1.5rem 2rem;
    overflow: hidden;
}

.page.active {
    display: flex;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-shrink: 0;
    min-height: 0;
}

.header h1 {
    font-size: 2rem;
    font-weight: 300;
    color: var(--text-tertiary);
}

.header-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn {
    padding: 0.7rem 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
    border: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.btn-primary {
    background: var(--accent-color);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-color);
}

.btn-danger {
    background: var(--error-color);
    color: #fff;
}

.btn-danger:hover {
    background: var(--error-hover);
}

.btn-success {
    background: var(--success-color);
    color: #fff;
}

.btn-success:hover {
    background: var(--success-hover);
}

/* ============================================================================
   PHASE 6: FOCUS STYLES FOR ACCESSIBILITY
   ============================================================================ */

/* Focus outline for all button variants */
.btn:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Focus outline for tabs */
.tab:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Focus outline for form inputs and selects */
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 1px;
    border-color: var(--accent-color);
}

/* Focus outline for modal close buttons */
.modal-close:focus-visible,
.modal-close-btn:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
    border-radius: 50%;
}

/* Focus outline for map controls */
.map-mode-btn:focus-visible,
.map-style-btn:focus-visible,
.map-style-btn-3d:focus-visible,
.map-fullscreen-btn:focus-visible,
.draw-tool-btn:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Small button variant */
.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

/* ============================================================================
   PHASE 6: BULK ACTIONS TOOLBAR
   ============================================================================ */

.bulk-actions-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--accent-color);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    gap: 1rem;
}

.bulk-select-all {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.bulk-select-all input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    cursor: pointer;
}

.bulk-select-all label {
    cursor: pointer;
    font-weight: 500;
}

.bulk-count {
    color: var(--accent-color);
    font-weight: 600;
    margin-left: 0.5rem;
}

.bulk-actions {
    display: flex;
    gap: 0.5rem;
}

/* Camera card bulk checkbox */
.camera-bulk-checkbox {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    width: 1.2rem;
    height: 1.2rem;
    cursor: pointer;
    z-index: 10;
}

/* Dragging state for camera cards */
.camera-card.dragging,
.camera-tile.dragging {
    opacity: 0.5;
    transform: scale(0.98);
    border: 2px dashed var(--accent-color);
}