/* Premium settle animation for dropped cards */
        .board-card-settling {
            animation: cardSettle var(--duration-slow) cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
        }

        @keyframes cardSettle {
            0% {
                transform: scale(1.02) translateY(-2px);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            }
            50% {
                transform: scale(0.98) translateY(1px);
            }
            100% {
                transform: scale(1) translateY(0);
                box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
            }
        }

        .board-card-header {
            display: flex;
            align-items: flex-start;
            gap: 6px;
            margin-bottom: 8px;
        }

        .board-card-checkbox {
            flex-shrink: 0;
            margin-top: 2px;
        }

        .board-card-title {
            flex: 1;
            min-width: 0;
            font-size: var(--font-size-14);
            color: var(--text-primary);
            line-height: 1.4;
            word-break: break-word;
        }

        .board-card-title-meta {
            float: right;
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: 6px;
            height: 19px;
        }

        .board-card-title .task-note-icon {
            display: inline;
            vertical-align: middle;
            margin-left: 4px;
        }

        .board-card-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        .board-card-priority {
            display: inline-flex;
            align-items: center;
            font-size: var(--font-size-2xs);
            font-weight: 600;
            padding: 2px 4px;
            border-radius: var(--radius-sm);
            white-space: nowrap;
        }

        .board-card-priority.p1 {
            background: rgba(239, 68, 68, 0.1);
            color: var(--color-red-text);
        }

        .board-card-priority.p2 {
            background: rgba(97, 97, 97, 0.1);
            color: var(--text-tertiary);
        }

        .board-card-priority.p3 {
            background: rgba(97, 97, 97, 0.1);
            color: var(--text-tertiary);
        }

        /* Priority is now text-only (P1/P2/P3), no SVG icon */

        .board-card-due {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: var(--font-size-xs);
            color: var(--text-tertiary);
        }

        .board-card-due.overdue {
            color: var(--color-red-text);
        }

        .board-card-due.today {
            color: var(--color-amber-text);
        }

        .board-card-due svg {
            width: 12px;
            height: 12px;
        }

        .board-card-area {
            font-size: var(--font-size-xs);
            color: var(--text-tertiary);
            background: var(--bg-tertiary);
            padding: 2px 6px;
            border-radius: var(--radius-sm);
        }

        /* Board Card Input */
        .board-card-input {
            cursor: default;
        }

        .board-card-input:hover {
            transform: none;
            box-shadow: var(--shadow-1);
        }

        .board-card-input-field {
            width: 100%;
            border: none;
            background: transparent;
            font-size: var(--font-size-14);
            color: var(--text-primary);
            font-family: var(--font-family);
            outline: none;
            padding: 0;
        }

        .board-card-input-field::placeholder {
            color: var(--text-tertiary);
        }

        .board-card-input-field:empty::before {
            content: attr(data-placeholder);
            color: var(--text-tertiary);
            pointer-events: none;
        }

        /* Board Add Task Button */
        .board-column-add {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 12px;
            margin: 0 8px 8px;
            border: none;
            background: transparent;
            border-radius: var(--radius-sm);
            color: var(--text-tertiary);
            font-size: var(--font-size-sm);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .board-column-add:hover {
            background: var(--bg-secondary);
            color: var(--text-primary);
        }

        .board-column-add svg {
            width: 14px;
            height: 14px;
        }

        /* Add Column Button */
        .board-add-column {
            flex: 0 0 280px;
            min-width: 280px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--bg-tertiary);
            border: 2px dashed var(--border-medium);
            border-radius: var(--radius-md);
            color: var(--text-tertiary);
            font-size: var(--font-size-14);
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .board-add-column:hover {
            background: var(--bg-secondary);
            border-color: var(--text-tertiary);
            color: var(--text-secondary);
        }

        .board-add-column svg {
            width: 16px;
            height: 16px;
        }

        .section-menu-header {
            padding: 8px 12px 4px;
            font-size: var(--font-size-11);
            font-weight: 600;
            color: var(--text-tertiary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* Board Settings Button */
        .board-settings-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border: none;
            background: transparent;
            border-radius: calc(var(--radius-sm) / 2);
            color: var(--text-tertiary);
            cursor: pointer;
            transition: all var(--transition-fast);
            margin-left: 4px;
        }

        .board-settings-btn:hover {
            color: var(--text-secondary);
            background: var(--bg-secondary);
        }

        .board-settings-btn svg {
            width: 16px;
            height: 16px;
        }

        /* Board Settings Popover */
        .board-settings-popover {
            position: fixed;
            width: 280px;
            background: var(--bg-primary);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-2);
            z-index: var(--z-layer-menu);
            overflow: hidden;
        }

        .board-settings-section {
            padding: 12px;
        }

        .board-settings-section + .board-settings-section {
            border-top: 1px solid var(--border-light);
        }

        .board-settings-section-title {
            font-size: var(--font-size-11);
            font-weight: 600;
            color: var(--text-tertiary);
            letter-spacing: -0.01em;
            margin-bottom: 8px;
        }

        .board-settings-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 6px 0;
        }

        .board-settings-row label {
            font-size: var(--font-size-sm);
            color: var(--text-primary);
            cursor: pointer;
            user-select: none;
        }

        /* iOS-style toggle switch */
        .board-settings-toggle {
            position: relative;
            width: 36px;
            height: 20px;
            background: var(--bg-tertiary);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            cursor: pointer;
            transition: all var(--duration-normal) var(--ease-in-out);
            flex-shrink: 0;
        }

        .board-settings-toggle::after {
            content: '';
            position: absolute;
            top: 2px;
            left: 2px;
            width: 14px;
            height: 14px;
            background: white;
            border-radius: var(--radius-circle);
            box-shadow: var(--shadow-1);
            transition: transform var(--duration-normal) var(--ease-in-out);
        }

        .board-settings-toggle.active {
            background: var(--accent-blue);
            border-color: var(--accent-blue);
        }

        .board-settings-toggle.active::after {
            transform: translateX(16px);
        }

        /* Hidden section row in popover */
        .board-settings-hidden-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 4px 0;
        }

        .board-settings-hidden-row span {
            font-size: var(--font-size-sm);
            color: var(--text-secondary);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .board-settings-show-btn {
            font-size: var(--font-size-xs);
            color: var(--accent-blue);
            background: none;
            border: none;
            cursor: pointer;
            padding: 2px 6px;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .board-settings-show-btn:hover {
            background: var(--accent-blue-opacity-8);
        }

        .board-settings-hidden-section {
            margin-top: 8px;
        }

        .board-settings-empty {
            font-size: var(--font-size-xs);
            color: var(--text-tertiary);
            font-style: italic;
            padding: 4px 0;
        }

        /* New Board Card Elements */
        .board-card-task-id {
            font-size: var(--font-size-2xs);
            color: var(--text-tertiary);
            font-family: 'SF Mono', 'Menlo', 'Monaco', monospace;
            white-space: nowrap;
        }

        .board-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 4px;
            margin-top: 6px;
        }

        .board-card-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: var(--font-size-2xs);
            padding: 1px 6px;
            border-radius: var(--radius-sm);
            line-height: 1.4;
            max-width: 120px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            background: transparent;
            border: 1px solid var(--border-light);
            color: var(--text-tertiary);
        }

        .board-card-tag-dot {
            width: 6px;
            height: 6px;
            border-radius: var(--radius-circle);
            flex-shrink: 0;
            background: var(--text-tertiary) !important;
        }

        .board-card-assignee {
            position: absolute;
            bottom: 10px;
            right: 10px;
            width: 20px;
            height: 20px;
            border-radius: var(--radius-circle);
            background: var(--accent-fill);
            color: white;
            font-size: var(--font-size-2xs);
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
        }