/* Task Board - Kanban Styles */

/* ========================================================================
   Board Layout
   ======================================================================== */

.board {
    display: flex;
    gap: 16px;
    min-height: 500px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 16px;
}

.board-column {
    flex: 1;
    min-width: 280px;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    background: var(--ws-bg);
    border: 1px solid var(--ws-border);
    border-radius: var(--ws-radius);
    overflow: hidden;
}

.column-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--ws-card-bg);
    border-bottom: 1px solid var(--ws-border);
    position: sticky;
    top: 0;
    z-index: 2;
}

.column-header h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--ws-text);
    margin: 0;
}

.column-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    border-radius: 11px;
    font-size: 12px;
    font-weight: 600;
    color: var(--ws-text-secondary);
    background: var(--ws-accent-light);
}

.column-body {
    flex: 1;
    padding: 8px;
    min-height: 100px;
    overflow-y: auto;
}

/* Column accent colors */
#col-backlog .column-header { border-top: 3px solid #94a3b8; }
#col-in_progress .column-header { border-top: 3px solid var(--ws-accent); }
#col-review .column-header { border-top: 3px solid var(--ws-purple); }
#col-done .column-header { border-top: 3px solid var(--ws-success); }

#col-backlog .column-count { background: rgba(148, 163, 184, 0.15); color: #64748b; }
#col-in_progress .column-count { background: var(--ws-accent-light); color: var(--ws-accent); }
#col-review .column-count { background: rgba(124, 58, 237, 0.12); color: var(--ws-purple); }
#col-done .column-count { background: rgba(22, 163, 74, 0.12); color: var(--ws-success); }

/* ========================================================================
   Task Cards
   ======================================================================== */

.board-task-card {
    background: var(--ws-card-bg);
    border: 1px solid var(--ws-border);
    border-radius: 6px;
    padding: 12px;
    margin-bottom: 8px;
    cursor: grab;
    transition: box-shadow 0.15s, transform 0.15s;
    box-shadow: var(--ws-shadow);
    position: relative;
}

.board-task-card:hover {
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.board-task-card:active {
    cursor: grabbing;
}

.board-task-card.overdue {
    border-left: 3px solid var(--ws-danger);
}

.card-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--ws-text);
    margin-bottom: 8px;
    line-height: 1.4;
    word-break: break-word;
}

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

.card-list-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    background: var(--ws-accent-light);
    color: var(--ws-accent);
    white-space: nowrap;
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-due {
    font-size: 11px;
    color: var(--ws-text-secondary);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

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

.card-due-icon {
    font-size: 12px;
}

.card-avatar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    font-size: 9px;
    font-weight: 700;
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
    flex-shrink: 0;
    letter-spacing: 0.3px;
}

/* ========================================================================
   Quick Add Form
   ======================================================================== */

.quick-add-form {
    padding: 8px;
    border-bottom: 1px solid var(--ws-border);
    background: var(--ws-card-bg);
}

.quick-add-input-wrap {
    display: flex;
    gap: 6px;
}

.quick-add-input {
    flex: 1;
    padding: 7px 10px;
    border: 1px solid var(--ws-border);
    border-radius: 5px;
    font-size: 13px;
    font-family: inherit;
    background: var(--ws-bg);
    color: var(--ws-text);
    outline: none;
    transition: border-color 0.2s;
}

.quick-add-input:focus {
    border-color: var(--ws-accent);
}

.quick-add-input::placeholder {
    color: var(--ws-text-secondary);
}

.quick-add-btn {
    padding: 7px 12px;
    border: none;
    border-radius: 5px;
    background: var(--ws-accent);
    color: white;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s;
}

.quick-add-btn:hover {
    background: #1d4ed8;
}

/* ========================================================================
   SortableJS Ghost & Chosen
   ======================================================================== */

.sortable-ghost {
    opacity: 0.4;
    background: var(--ws-accent-light);
    border: 2px dashed var(--ws-accent);
}

.sortable-chosen {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
    transform: rotate(1deg) scale(1.02);
}

.sortable-drag {
    opacity: 0.95;
}

.sortable-fallback {
    opacity: 0.9 !important;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2) !important;
}

/* ========================================================================
   Header Controls
   ======================================================================== */

.board-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.board-header h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--ws-text);
}

.board-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.board-select {
    padding: 7px 12px;
    border: 1px solid var(--ws-border);
    border-radius: 6px;
    font-size: 13px;
    font-family: inherit;
    background: var(--ws-card-bg);
    color: var(--ws-text);
    cursor: pointer;
    outline: none;
    min-width: 160px;
}

.board-select:focus {
    border-color: var(--ws-accent);
}

/* ========================================================================
   Task Detail Modal
   ======================================================================== */

.task-detail-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.task-detail-overlay.active {
    display: flex;
}

.task-detail-modal {
    background: var(--ws-card-bg);
    border-radius: 12px;
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.task-detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 0;
}

.task-detail-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ws-text);
    margin: 0;
}

.task-detail-close {
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    font-size: 20px;
    color: var(--ws-text-secondary);
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
}

.task-detail-close:hover {
    background: var(--ws-accent-light);
    color: var(--ws-text);
}

.task-detail-body {
    padding: 20px 24px;
}

.task-detail-field {
    margin-bottom: 16px;
}

.task-detail-field label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--ws-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.task-detail-field input,
.task-detail-field textarea,
.task-detail-field select {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--ws-border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    background: var(--ws-bg);
    color: var(--ws-text);
    outline: none;
    transition: border-color 0.2s;
}

.task-detail-field input:focus,
.task-detail-field textarea:focus,
.task-detail-field select:focus {
    border-color: var(--ws-accent);
}

.task-detail-field textarea {
    min-height: 80px;
    resize: vertical;
}

.task-detail-info {
    font-size: 12px;
    color: var(--ws-text-secondary);
    padding: 12px 0;
    border-top: 1px solid var(--ws-border);
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.task-detail-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px 20px;
    gap: 12px;
}

.task-detail-footer .btn-danger {
    background: transparent;
    color: var(--ws-danger);
    border: 1px solid var(--ws-danger);
}

.task-detail-footer .btn-danger:hover {
    background: var(--ws-danger);
    color: white;
}

.task-detail-footer .btn-save {
    background: var(--ws-accent);
    color: white;
    border: none;
    padding: 9px 24px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.task-detail-footer .btn-save:hover {
    background: #1d4ed8;
}

/* ========================================================================
   Delete Confirmation Overlay
   ======================================================================== */

.delete-confirm-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1100;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.delete-confirm-overlay.active {
    display: flex;
}

.delete-confirm-modal {
    background: var(--ws-card-bg);
    border-radius: 12px;
    padding: 28px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.delete-confirm-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.delete-confirm-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ws-text);
    margin-bottom: 8px;
}

.delete-confirm-message {
    font-size: 14px;
    color: var(--ws-text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

.delete-confirm-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.delete-confirm-actions .btn-cancel {
    padding: 9px 24px;
    border: 1px solid var(--ws-border);
    background: var(--ws-card-bg);
    color: var(--ws-text);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.delete-confirm-actions .btn-cancel:hover {
    background: var(--ws-bg);
}

.delete-confirm-actions .btn-delete {
    padding: 9px 24px;
    border: none;
    background: var(--ws-danger);
    color: white;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.delete-confirm-actions .btn-delete:hover {
    background: #b91c1c;
}

/* ========================================================================
   Sync Progress
   ======================================================================== */

.sync-progress {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: var(--ws-card-bg);
    border: 1px solid var(--ws-accent);
    border-radius: 8px;
    margin-bottom: 16px;
    box-shadow: 0 1px 4px rgba(37, 99, 235, 0.1);
}

.sync-progress.active {
    display: flex;
}

.sync-spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--ws-border);
    border-top-color: var(--ws-accent);
    border-radius: 50%;
    animation: board-spin 0.8s linear infinite;
    flex-shrink: 0;
}

@keyframes board-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.sync-message {
    font-size: 13px;
    font-weight: 500;
    color: var(--ws-text);
}

/* ========================================================================
   Empty States
   ======================================================================== */

.board-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: var(--ws-text-secondary);
    text-align: center;
}

.board-empty-icon {
    font-size: 40px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.board-empty-state p {
    font-size: 14px;
    margin: 0;
}

.column-empty {
    text-align: center;
    padding: 24px 12px;
    color: var(--ws-text-secondary);
    font-size: 13px;
    font-style: italic;
}

/* ========================================================================
   Loading
   ======================================================================== */

.board-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
}

.board-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--ws-border);
    border-top-color: var(--ws-accent);
    border-radius: 50%;
    animation: board-spin 0.8s linear infinite;
    margin-bottom: 16px;
}

.board-loading p {
    font-size: 14px;
    color: var(--ws-text-secondary);
}

/* ========================================================================
   Dark Mode
   ======================================================================== */

[data-theme="dark"] .board-column {
    background: #0f172a;
    border-color: var(--ws-border);
}

[data-theme="dark"] .column-header {
    background: var(--ws-card-bg);
    border-color: var(--ws-border);
}

[data-theme="dark"] .board-task-card {
    background: var(--ws-card-bg);
    border-color: var(--ws-border);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .board-task-card:hover {
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .card-list-badge {
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
}

[data-theme="dark"] .sortable-ghost {
    background: rgba(59, 130, 246, 0.1);
    border-color: #60a5fa;
}

[data-theme="dark"] .sortable-chosen {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .quick-add-input {
    background: #0f172a;
    border-color: var(--ws-border);
    color: var(--ws-text);
}

[data-theme="dark"] .quick-add-input::placeholder {
    color: #64748b;
}

[data-theme="dark"] .quick-add-btn {
    background: #3b82f6;
}

[data-theme="dark"] .quick-add-btn:hover {
    background: #2563eb;
}

[data-theme="dark"] .board-select {
    background: var(--ws-card-bg);
    border-color: var(--ws-border);
    color: var(--ws-text);
}

[data-theme="dark"] .task-detail-modal {
    background: var(--ws-card-bg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .task-detail-field input,
[data-theme="dark"] .task-detail-field textarea,
[data-theme="dark"] .task-detail-field select {
    background: #0f172a;
    border-color: var(--ws-border);
    color: var(--ws-text);
}

[data-theme="dark"] .task-detail-close:hover {
    background: rgba(96, 165, 250, 0.1);
}

[data-theme="dark"] .task-detail-footer .btn-save {
    background: #3b82f6;
}

[data-theme="dark"] .task-detail-footer .btn-save:hover {
    background: #2563eb;
}

[data-theme="dark"] .delete-confirm-modal {
    background: var(--ws-card-bg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .delete-confirm-actions .btn-cancel {
    background: var(--ws-card-bg);
    border-color: var(--ws-border);
    color: var(--ws-text);
}

[data-theme="dark"] .delete-confirm-actions .btn-cancel:hover {
    background: #0f172a;
}

[data-theme="dark"] .sync-progress {
    border-color: #3b82f6;
    box-shadow: 0 1px 4px rgba(59, 130, 246, 0.15);
}

[data-theme="dark"] .sync-spinner {
    border-color: var(--ws-border);
    border-top-color: #60a5fa;
}

[data-theme="dark"] #col-backlog .column-header { border-top-color: #64748b; }
[data-theme="dark"] #col-in_progress .column-header { border-top-color: #60a5fa; }
[data-theme="dark"] #col-review .column-header { border-top-color: #a78bfa; }
[data-theme="dark"] #col-done .column-header { border-top-color: #4ade80; }

/* ========================================================================
   Responsive
   ======================================================================== */

@media (max-width: 1024px) {
    .board {
        min-height: 400px;
    }

    .board-column {
        min-width: 260px;
    }
}

@media (max-width: 768px) {
    .board-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .board-controls {
        width: 100%;
    }

    .board-select {
        flex: 1;
        min-width: 0;
    }

    .board {
        min-height: 350px;
    }

    .board-column {
        min-width: 240px;
    }

    .column-header {
        padding: 10px 12px;
    }

    .column-body {
        padding: 6px;
    }

    .board-task-card {
        padding: 10px;
    }

    .card-title {
        font-size: 12px;
    }

    .task-detail-modal {
        max-width: 100%;
        margin: 10px;
    }

    .task-detail-body {
        padding: 16px;
    }

    .task-detail-footer {
        padding: 0 16px 16px;
        flex-direction: column;
    }

    .task-detail-footer .btn-save,
    .task-detail-footer .btn-danger {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .board-column {
        min-width: 220px;
    }
}