/* =============================================
   PRODUCTIVEAPP - KANBAN BOARD + NOTIFICATION CENTER
   Premium Kanban board & Notification dropdown
   v1.0 - 2026-02-07
   ============================================= */

/* =============================================
   KANBAN BOARD
   ============================================= */

/* === VIEW TOGGLE (Bulles | Kanban) === */
.kanban-view-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 3px;
    margin-left: 12px;
}

.kanban-view-toggle-btn {
    padding: 6px 14px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    font-family: inherit;
}

.kanban-view-toggle-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.kanban-view-toggle-btn:hover {
    color: var(--text);
}

.kanban-view-toggle-btn.active {
    background: var(--accent);
    color: var(--bg-primary);
    box-shadow: 0 2px 8px var(--accent-glow);
}

/* === BOARD CONTAINER === */
.kanban-board {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    overflow-x: auto;
    overflow-y: hidden;
    min-height: calc(100vh - 220px);
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.kanban-board::-webkit-scrollbar {
    height: 6px;
}

.kanban-board::-webkit-scrollbar-track {
    background: transparent;
}

.kanban-board::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.kanban-board::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* === FILTERS BAR === */
.kanban-filters {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 0;
    flex-wrap: wrap;
}

.kanban-filter-select {
    padding: 7px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text);
    font-size: 0.8rem;
    font-family: inherit;
    cursor: pointer;
    transition: border-color 0.2s ease;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23999' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px;
}

.kanban-filter-select:hover,
.kanban-filter-select:focus {
    border-color: var(--accent);
    outline: none;
}

.kanban-filter-select option {
    background: var(--bg-secondary);
    color: var(--text);
}

.kanban-filter-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* === COLUMN === */
.kanban-column {
    min-width: 280px;
    max-width: 340px;
    flex: 1;
    background: var(--bg-secondary);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 240px);
    transition: background 0.2s ease;
}

.kanban-column.drag-over {
    background: color-mix(in srgb, var(--accent) 6%, var(--bg-secondary));
}

/* === COLUMN HEADER === */
.kanban-column-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px 12px;
    border-bottom: 2px solid var(--accent);
    flex-shrink: 0;
}

.kanban-column-header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.kanban-column-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.2px;
}

.kanban-column-count {
    min-width: 22px;
    height: 22px;
    border-radius: 6px;
    background: var(--bg-card);
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 6px;
}

.kanban-column-add-btn {
    width: 26px;
    height: 26px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-family: inherit;
}

.kanban-column-add-btn:hover {
    background: var(--accent);
    color: var(--bg-primary);
}

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

/* Column color variants */
.kanban-column[data-status="todo"] .kanban-column-header {
    border-bottom-color: var(--accent);
}

.kanban-column[data-status="in_progress"] .kanban-column-header {
    border-bottom-color: var(--warning);
}

.kanban-column[data-status="review"] .kanban-column-header {
    border-bottom-color: #a78bfa;
}

.kanban-column[data-status="done"] .kanban-column-header {
    border-bottom-color: var(--success);
}

/* === COLUMN BODY (scrollable task list) === */
.kanban-column-body {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.kanban-column-body::-webkit-scrollbar {
    width: 4px;
}

.kanban-column-body::-webkit-scrollbar-track {
    background: transparent;
}

.kanban-column-body::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

/* === TASK CARD === */
.kanban-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px;
    cursor: grab;
    user-select: none;
    transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease, border-color 0.18s ease;
    position: relative;
}

.kanban-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

.kanban-card:active {
    cursor: grabbing;
}

/* Dragging state */
.kanban-card.dragging {
    opacity: 0.9;
    transform: rotate(2deg) scale(1.02);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px var(--accent);
    z-index: 1000;
    transition: none;
}

/* Drop placeholder */
.kanban-drop-placeholder {
    border: 2px dashed var(--accent);
    background: var(--bg-card);
    border-radius: 10px;
    min-height: 60px;
    transition: all 0.2s ease;
    opacity: 0.7;
}

/* Card title */
.kanban-card-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Card project name */
.kanban-card-project {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.kanban-card-project-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Card metadata row */
.kanban-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.kanban-card-meta-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Priority dot */
.kanban-card-priority {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.kanban-card-priority.urgent {
    background: var(--danger);
    box-shadow: 0 0 6px rgba(239, 68, 68, 0.5);
}

.kanban-card-priority.normal {
    background: var(--warning);
}

.kanban-card-priority.zen {
    background: var(--success);
}

/* Due date */
.kanban-card-due {
    font-size: 0.7rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 3px;
}

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

.kanban-card-due.overdue {
    color: var(--danger);
    font-weight: 600;
}

.kanban-card-due.due-soon {
    color: var(--warning);
}

/* Assignee avatar */
.kanban-card-assignee {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    flex-shrink: 0;
    cursor: default;
}

.kanban-card-assignee[title]:hover {
    border-color: var(--accent);
}

/* === EMPTY COLUMN STATE === */
.kanban-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
    border: 2px dashed var(--border);
    border-radius: 10px;
    margin: 8px;
    min-height: 100px;
    text-align: center;
    opacity: 0.6;
    transition: all 0.2s ease;
}

.kanban-empty svg {
    width: 28px;
    height: 28px;
    color: var(--text-muted);
    margin-bottom: 8px;
    opacity: 0.5;
}

.kanban-empty-text {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.kanban-column.drag-over .kanban-empty {
    border-color: var(--accent);
    opacity: 1;
    background: var(--bg-card);
}

/* === INLINE CREATE FORM === */
.kanban-inline-create {
    padding: 10px;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
}

.kanban-inline-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-tertiary);
    color: var(--text);
    font-size: 0.8rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s ease;
}

.kanban-inline-input:focus {
    border-color: var(--accent);
}

.kanban-inline-input::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

.kanban-inline-actions {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

.kanban-inline-save {
    padding: 6px 14px;
    border: none;
    border-radius: 6px;
    background: var(--accent);
    color: var(--bg-primary);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.kanban-inline-save:hover {
    box-shadow: 0 2px 8px var(--accent-glow);
}

.kanban-inline-cancel {
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.kanban-inline-cancel:hover {
    border-color: var(--text-muted);
    color: var(--text);
}

/* === SORT INDICATOR === */
.kanban-sort-btn {
    padding: 4px 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.7rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 4px;
    font-family: inherit;
}

.kanban-sort-btn:hover {
    border-color: var(--accent);
    color: var(--text);
}

.kanban-sort-btn svg {
    width: 12px;
    height: 12px;
}

/* === CARD MOVE ANIMATION === */
@keyframes kanbanCardEnter {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.kanban-card.entering {
    animation: kanbanCardEnter 0.25s ease forwards;
}

/* =============================================
   NOTIFICATION CENTER
   ============================================= */

/* === BELL BUTTON === */
.notif-center-bell {
    position: relative;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-family: inherit;
}

.notif-center-bell:hover {
    background: var(--bg-card);
    color: var(--text);
}

.notif-center-bell svg {
    width: 20px;
    height: 20px;
}

/* Unread badge */
.notif-center-badge {
    position: absolute;
    top: 3px;
    right: 3px;
    min-width: 16px;
    height: 16px;
    border-radius: 8px;
    background: #ef4444;
    color: #fff;
    font-size: 0.6rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    box-shadow: 0 2px 6px rgba(239, 68, 68, 0.4);
    animation: notifBadgePop 0.3s ease;
    pointer-events: none;
}

.notif-center-badge.hidden {
    display: none;
}

@keyframes notifBadgePop {
    0% { transform: scale(0); }
    60% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* === DROPDOWN PANEL === */
.notif-center-panel {
    position: fixed;
    top: 60px;
    right: 16px;
    width: 360px;
    max-height: 480px;
    background: color-mix(in srgb, var(--bg-secondary) 92%, transparent);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255,255,255,0.03) inset;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform-origin: top right;
    animation: notifPanelSlideDown 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.notif-center-panel.hidden {
    display: none;
}

@keyframes notifPanelSlideDown {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Panel header */
.notif-center-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px 12px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.notif-center-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
}

.notif-center-header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.notif-center-mark-all {
    padding: 5px 10px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--accent);
    font-size: 0.7rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.notif-center-mark-all:hover {
    background: var(--bg-card);
}

.notif-center-close {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-family: inherit;
}

.notif-center-close:hover {
    background: var(--bg-card);
    color: var(--text);
}

.notif-center-close svg {
    width: 14px;
    height: 14px;
}

/* Panel body (scrollable list) */
.notif-center-body {
    flex: 1;
    overflow-y: auto;
    padding: 6px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.notif-center-body::-webkit-scrollbar {
    width: 4px;
}

.notif-center-body::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

/* === NOTIFICATION ITEM === */
.notif-center-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 18px;
    cursor: pointer;
    transition: background 0.15s ease;
    position: relative;
    border-left: 3px solid transparent;
}

.notif-center-item:hover {
    background: var(--bg-card);
}

/* Unread state */
.notif-center-item.unread {
    border-left-color: var(--accent);
}

.notif-center-item.unread .notif-center-item-title {
    font-weight: 600;
}

/* Category colors for unread border */
.notif-center-item.unread.type-info {
    border-left-color: #3b82f6;
}

.notif-center-item.unread.type-success {
    border-left-color: var(--success);
}

.notif-center-item.unread.type-warning {
    border-left-color: #f59e0b;
}

.notif-center-item.unread.type-alert {
    border-left-color: var(--danger);
}

/* Icon */
.notif-center-item-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.85rem;
}

.notif-center-item-icon.type-info {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}

.notif-center-item-icon.type-success {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
}

.notif-center-item-icon.type-warning {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

.notif-center-item-icon.type-alert {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.notif-center-item-icon svg {
    width: 16px;
    height: 16px;
}

/* Content */
.notif-center-item-content {
    flex: 1;
    min-width: 0;
}

.notif-center-item-title {
    font-size: 0.8rem;
    color: var(--text);
    font-weight: 500;
    line-height: 1.35;
    margin-bottom: 2px;
}

.notif-center-item-desc {
    font-size: 0.72rem;
    color: var(--text-muted);
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.notif-center-item-time {
    font-size: 0.65rem;
    color: var(--text-muted);
    opacity: 0.7;
    margin-top: 4px;
    white-space: nowrap;
}

/* Dismiss button */
.notif-center-item-dismiss {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    transition: all 0.15s ease;
    font-family: inherit;
}

.notif-center-item:hover .notif-center-item-dismiss {
    display: flex;
}

.notif-center-item-dismiss:hover {
    background: var(--bg-secondary);
    color: var(--text);
}

/* Empty state */
.notif-center-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
}

.notif-center-empty svg {
    width: 40px;
    height: 40px;
    color: var(--text-muted);
    opacity: 0.3;
    margin-bottom: 12px;
}

.notif-center-empty-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.6;
}

/* Panel footer */
.notif-center-footer {
    padding: 10px 18px;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notif-center-footer-btn {
    padding: 6px 16px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.notif-center-footer-btn:hover {
    background: var(--bg-card);
}

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

@media (max-width: 768px) {
    /* Stack columns vertically on mobile */
    .kanban-board {
        flex-direction: column;
        overflow-x: hidden;
        min-height: auto;
        gap: 12px;
    }

    .kanban-column {
        min-width: 100%;
        max-width: 100%;
        max-height: none;
    }

    .kanban-column-body {
        max-height: 300px;
    }

    /* Full-width notification panel on mobile */
    .notif-center-panel {
        right: 8px;
        left: 8px;
        width: auto;
        max-height: 70vh;
    }

    .kanban-filters {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 8px;
    }

    .kanban-view-toggle {
        margin-left: 0;
    }
}

@media (max-width: 480px) {
    .kanban-column-body {
        max-height: 250px;
    }

    .notif-center-panel {
        top: 50px;
        right: 4px;
        left: 4px;
        border-radius: 12px;
    }
}

/* =============================================
   PRINT STYLES
   ============================================= */
@media print {
    .kanban-board {
        overflow: visible;
    }

    .kanban-column {
        break-inside: avoid;
        max-height: none;
    }

    .kanban-card {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .notif-center-panel,
    .notif-center-bell {
        display: none !important;
    }
}