/* ============================================
   LISTS MANAGEMENT PAGE
   ============================================

   Matches Tasks page styling:
   - Header aligned with sidebar header height
   - Premium animated tabs
   - Compact card grid

   ============================================ */

/* ============================================================================
   BASE LAYOUT - Breaks out of parent padding
   ============================================================================ */

.lists-management {
    display: flex;
    flex-direction: column;
    height: calc(100% + 2 * var(--spacing-xl));
    width: calc(100% + 2 * var(--spacing-xl));
    margin: calc(-1 * var(--spacing-xl));
    background: var(--color-bg);
    box-sizing: border-box;
    overflow: hidden;
}

/* ============================================================================
   HEADER - Matches Sidebar Height, Line to Edge
   ============================================================================ */

.lists-management__header {
    height: var(--sidebar-header-height);
    min-height: var(--sidebar-header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    background: var(--color-card-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.lists-management__title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.lists-management__title i {
    color: var(--color-primary);
    font-size: 22px;
}

.lists-management__header-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-left: auto;
}

/* Primary Add Button */
.lists-management__btn-add {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--color-primary);
    color: var(--color-on-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.lists-management__btn-add:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-default);
}

.lists-management__btn-add:active {
    transform: translateY(0);
}

.lists-management__btn-add i {
    font-size: 12px;
}

/* ============================================================================
   TABS - Premium Style (Matches Tasks)
   ============================================================================ */

.lists-management__tabs {
    display: flex;
    gap: 8px;
    padding: 12px var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--color-card-bg) 0%, var(--color-surface) 100%);
    border-bottom: 2px solid var(--color-border);
    position: sticky;
    top: var(--sidebar-header-height);
    z-index: 99;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.lists-management__tab {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 12px 20px;
    gap: 8px;
    background: linear-gradient(180deg,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(var(--color-primary-rgb), 0.05) 100%);
    border: 1px solid var(--color-border);
    border-bottom: 3px solid transparent;
    border-radius: 10px 10px 0 0;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    white-space: nowrap;
    overflow: hidden;
}

/* Hover gradient overlay */
.lists-management__tab::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
        rgba(var(--color-primary-rgb), 0.06) 0%,
        rgba(var(--color-primary-rgb), 0.1) 50%,
        rgba(var(--color-primary-rgb), 0.06) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
    border-radius: inherit;
}

/* Bottom indicator bar */
.lists-management__tab::before {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 50%;
    right: 50%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 0 8px rgba(var(--color-primary-rgb), 0.4);
}

.lists-management__tab:hover:not(.lists-management__tab--active) {
    color: var(--color-text);
    transform: translateY(-1px);
    border-color: rgba(var(--color-primary-rgb), 0.2);
}

.lists-management__tab:hover::after {
    opacity: 1;
}

/* Active tab state */
.lists-management__tab--active {
    color: var(--color-primary);
    background: linear-gradient(135deg, var(--color-card-bg) 0%, var(--color-primary-bg) 100%);
    border: 1px solid rgba(var(--color-primary-rgb), 0.2);
    font-weight: 700;
    transform: translateY(-2px);
    box-shadow:
        0 4px 8px rgba(0, 0, 0, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.8),
        0 0 0 1px rgba(var(--color-primary-rgb), 0.1);
}

.lists-management__tab--active::before {
    opacity: 1;
    left: 0;
    right: 0;
}

.lists-management__tab i {
    font-size: 13px;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.lists-management__tab--active i {
    opacity: 1;
}

/* Count badge */
.lists-management__tab-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    background: var(--color-surface);
    color: var(--color-text-secondary);
    font-size: 11px;
    font-weight: 700;
    border-radius: 11px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.lists-management__tab--active .lists-management__tab-count {
    background: var(--color-primary);
    color: var(--color-on-primary);
    box-shadow:
        0 2px 6px rgba(var(--color-primary-rgb), 0.3),
        0 0 0 2px rgba(var(--color-primary-rgb), 0.15);
    transform: scale(1.05);
}

/* ============================================================================
   TOOLBAR
   ============================================================================ */

.lists-management__toolbar {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-xl);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
}

.lists-management__search {
    position: relative;
    display: flex;
    align-items: center;
    width: 280px;
}

.lists-management__search i {
    position: absolute;
    left: 10px;
    color: var(--color-text-muted);
    font-size: 13px;
    pointer-events: none;
}

.lists-management__search input {
    width: 100%;
    padding: 8px 10px 8px 32px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-input-bg);
    color: var(--color-input-text);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.lists-management__search input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(var(--color-primary-rgb), 0.1);
}

.lists-management__search input::placeholder {
    color: var(--color-text-muted);
}

/* ============================================================================
   CONTENT AREA
   ============================================================================ */

.lists-management__content {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-md) var(--spacing-xl);
}

/* Slim scrollbar */
.lists-management__content::-webkit-scrollbar {
    width: 6px;
}

.lists-management__content::-webkit-scrollbar-track {
    background: transparent;
}

.lists-management__content::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

.lists-management__content::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ============================================================================
   CARD GRID
   ============================================================================ */

.lists-management__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-sm);
}

/* ============================================================================
   CARDS - Modern Elevated Design
   ============================================================================ */

.lists-management__card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
    cursor: default;
}

.lists-management__card:hover {
    border-color: rgba(var(--color-primary-rgb), 0.3);
    box-shadow:
        0 4px 12px rgba(0, 0, 0, 0.08),
        0 0 0 1px rgba(var(--color-primary-rgb), 0.1);
    transform: translateY(-2px);
}

.lists-management__card--pinned {
    background: linear-gradient(135deg, var(--color-card-bg) 0%, var(--color-primary-bg) 100%);
    border-color: rgba(var(--color-primary-rgb), 0.2);
}

.lists-management__card--pinned::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

/* Card Header */
.lists-management__card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.lists-management__card-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, rgba(var(--color-primary-rgb), 0.15) 100%);
    color: var(--color-primary);
    border-radius: var(--radius-md);
    font-size: 16px;
    transition: transform 0.2s ease;
}

.lists-management__card:hover .lists-management__card-icon {
    transform: scale(1.05);
}

.lists-management__card-title-group {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.lists-management__card-title {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.lists-management__card-badges {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

/* Badges - Refined */
.lists-management__badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    height: 20px;
    padding: 0 8px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 500;
}

.lists-management__badge i {
    font-size: 10px;
}

.lists-management__badge--tabs {
    background: var(--color-surface);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.lists-management__badge--private {
    background: var(--color-surface);
    color: var(--color-text-muted);
}

.lists-management__badge--private i {
    opacity: 0.6;
}

.lists-management__badge--public {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.lists-management__badge--shared {
    background: var(--color-info-bg);
    color: var(--color-info);
}

.lists-management__badge--pinned {
    background: var(--color-primary-bg);
    color: var(--color-primary);
}

/* Card Description */
.lists-management__card-desc {
    margin: 0 0 12px 0;
    padding-left: 52px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Card Footer */
.lists-management__card-footer {
    display: flex;
    justify-content: flex-end;
    padding-top: 10px;
    border-top: 1px solid var(--color-border-light);
    margin-top: auto;
}

.lists-management__card-actions {
    display: flex;
    gap: 4px;
}

/* Action Buttons - Refined Ghost Style */
.lists-management__action {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
    font-size: 13px;
}

.lists-management__action:hover {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text);
}

.lists-management__action--pin:hover,
.lists-management__action--active {
    background: var(--color-primary-bg);
    border-color: rgba(var(--color-primary-rgb), 0.2);
    color: var(--color-primary);
}

.lists-management__action--danger:hover {
    background: var(--color-danger-bg);
    border-color: rgba(239, 68, 68, 0.2);
    color: var(--color-danger);
}

/* ============================================================================
   EMPTY STATES
   ============================================================================ */

.lists-management__empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    padding: var(--spacing-xl);
    text-align: center;
}

.lists-management__empty-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.lists-management__empty-icon i {
    font-size: 24px;
    color: var(--color-text-muted);
}

.lists-management__empty-icon--search i {
    color: var(--color-info);
}

.lists-management__empty-icon--error i {
    color: var(--color-danger);
}

.lists-management__empty-title {
    margin: 0 0 4px 0;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
}

.lists-management__empty-text {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    max-width: 300px;
}

/* ============================================================================
   LOADING STATE
   ============================================================================ */

.lists-management__loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    gap: var(--spacing-md);
}

.lists-management__loading p {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.lists-management__spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: lists-spin 0.7s linear infinite;
}

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

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 768px) {
    .lists-management__header {
        padding: 0 var(--spacing-md);
    }

    .lists-management__title {
        font-size: 20px;
    }

    .lists-management__title i {
        font-size: 18px;
    }

    .lists-management__tabs {
        padding: var(--spacing-sm) var(--spacing-md) 0;
        gap: 4px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .lists-management__tabs::-webkit-scrollbar {
        display: none;
    }

    .lists-management__tab {
        padding: 10px 14px;
        font-size: var(--font-size-xs);
    }

    .lists-management__tab span:not(.lists-management__tab-count) {
        display: none;
    }

    .lists-management__toolbar {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .lists-management__search {
        width: 100%;
    }

    .lists-management__content {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .lists-management__grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================================
   THEME ADJUSTMENTS
   ============================================================================ */

/* Dark Theme */
[data-theme="dark"] .lists-management__tab {
    background: linear-gradient(180deg,
        rgba(30, 41, 59, 0.9) 0%,
        rgba(var(--color-primary-rgb), 0.08) 100%);
}

[data-theme="dark"] .lists-management__tab--active {
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-primary-bg) 100%);
}

[data-theme="dark"] .lists-management__card {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .lists-management__card:hover {
    box-shadow:
        0 8px 20px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(var(--color-primary-rgb), 0.2);
}

[data-theme="dark"] .lists-management__card--pinned {
    background: linear-gradient(135deg, var(--color-card-bg) 0%, rgba(var(--color-primary-rgb), 0.08) 100%);
}

/* ============================================================================
   ACCESSIBILITY
   ============================================================================ */

.lists-management__btn-add:focus-visible,
.lists-management__tab:focus-visible,
.lists-management__action:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.lists-management__search input:focus-visible {
    outline: none;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .lists-management__card {
        border-width: 2px;
    }

    .lists-management__tab--active {
        border: 2px solid currentColor;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .lists-management__card,
    .lists-management__btn-add,
    .lists-management__tab,
    .lists-management__action,
    .lists-management__spinner {
        transition: none;
        animation: none;
    }

    .lists-management__tab::before,
    .lists-management__tab::after {
        transition: none;
    }
}