/* ===============================================
   VISUAL PROJECT TRACKER STYLES
   Complete Kanban Board with responsive design
   =============================================== */

/* --- Main Content Layout --- */
.main-content {
    padding: var(--space-8) 0;
    min-height: 100vh;
    background: var(--bg-primary);
}

/* --- Board Header --- */
.board-header {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
}

[data-theme="dark"] .board-header {
    border-color: var(--gray-700);
}

.board-controls {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
    .board-controls {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 0;
    }
}

.board-selector {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.board-selector label {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    white-space: nowrap;
}

.board-select {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-base);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-family);
    min-width: 200px;
}

[data-theme="dark"] .board-select {
    border-color: var(--gray-600);
    background: var(--bg-tertiary);
}

.board-actions {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

/* --- Swimlane Controls --- */
.swimlane-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-4);
    border-top: 1px solid var(--gray-200);
}

[data-theme="dark"] .swimlane-controls {
    border-top-color: var(--gray-700);
}

.swimlane-selector label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    cursor: pointer;
}

/* --- Button Styles --- */
.btn-icon {
    width: 36px;
    height: 36px;
    border: 1px solid var(--gray-300);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-base);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.btn-icon:hover {
    background: var(--gray-100);
    transform: translateY(-1px);
}

[data-theme="dark"] .btn-icon {
    border-color: var(--gray-600);
    background: var(--bg-tertiary);
}

[data-theme="dark"] .btn-icon:hover {
    background: var(--gray-600);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--gray-300);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-base);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
    font-size: 0.875rem;
}

.btn-secondary:hover {
    background: var(--gray-100);
    transform: translateY(-1px);
}

[data-theme="dark"] .btn-secondary {
    border-color: var(--gray-600);
    background: var(--bg-tertiary);
}

[data-theme="dark"] .btn-secondary:hover {
    background: var(--gray-600);
}

.btn-small {
    padding: var(--space-1) var(--space-2);
    font-size: 0.75rem;
    border: 1px solid var(--gray-300);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-base);
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
}

.btn-small:hover {
    background: var(--gray-100);
}

[data-theme="dark"] .btn-small {
    border-color: var(--gray-600);
    background: var(--bg-tertiary);
}

[data-theme="dark"] .btn-small:hover {
    background: var(--gray-600);
}

.btn-danger {
    background: var(--error);
    color: white;
    border: none;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-base);
    cursor: pointer;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

/* --- Mobile Column Selector --- */
.mobile-column-selector {
    display: none;
    margin-bottom: var(--space-4);
}

@media (max-width: 640px) {
    .mobile-column-selector {
        display: block;
    }
}

.column-tabs {
    display: flex;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-1);
    overflow-x: auto;
}

.column-tab {
    padding: var(--space-2) var(--space-4);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-base);
    cursor: pointer;
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    transition: all var(--transition-base);
}

.column-tab.active {
    background: var(--brand-primary);
    color: white;
}

/* --- Kanban Board Layout --- */
.kanban-board {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

[data-theme="dark"] .kanban-board {
    border-color: var(--gray-700);
}

.swimlanes-container {
    min-height: 500px;
}

/* Desktop Layout */
@media (min-width: 641px) {
    .swimlanes-container {
        display: flex;
        flex-direction: column;
    }
    
    .swimlane {
        border-bottom: 1px solid var(--gray-200);
    }
    
    .swimlane:last-child {
        border-bottom: none;
    }
    
    [data-theme="dark"] .swimlane {
        border-bottom-color: var(--gray-700);
    }
    
    .swimlane-header {
        background: var(--gray-100);
        padding: var(--space-3) var(--space-4);
        font-weight: var(--font-weight-semibold);
        color: var(--text-primary);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    [data-theme="dark"] .swimlane-header {
        background: var(--gray-800);
    }
    
    .swimlane-content {
        display: flex;
        overflow-x: auto;
        min-height: 200px;
    }
    
    .kanban-column {
        min-width: 280px;
        width: 280px;
        border-right: 1px solid var(--gray-200);
        display: flex;
        flex-direction: column;
    }
    
    .kanban-column:last-child {
        border-right: none;
    }
    
    [data-theme="dark"] .kanban-column {
        border-right-color: var(--gray-700);
    }
}

/* Mobile Layout */
@media (max-width: 640px) {
    .swimlanes-container {
        display: block;
    }
    
    .swimlane {
        display: none;
    }
    
    .swimlane.active {
        display: block;
    }
    
    .swimlane-content {
        display: block;
    }
    
    .kanban-column {
        display: none;
        padding: var(--space-4);
    }
    
    .kanban-column.active {
        display: block;
    }
}

/* --- Column Styles --- */
.column-header {
    padding: var(--space-4);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

[data-theme="dark"] .column-header {
    border-bottom-color: var(--gray-700);
}

.column-title {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0;
}

.column-count {
    background: var(--gray-200);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: var(--font-weight-medium);
}

[data-theme="dark"] .column-count {
    background: var(--gray-600);
    color: var(--gray-300);
}

.column-actions {
    display: flex;
    gap: var(--space-1);
}

.column-action {
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-base);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.column-action:hover {
    background: var(--gray-200);
    color: var(--text-primary);
}

[data-theme="dark"] .column-action:hover {
    background: var(--gray-600);
}

.column-content {
    flex: 1;
    padding: var(--space-3);
    min-height: 200px;
    background: var(--bg-primary);
}

/* --- Card Styles --- */
.kanban-card {
    background: var(--bg-primary);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-base);
    padding: var(--space-3);
    margin-bottom: var(--space-3);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.kanban-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.kanban-card.dragging {
    opacity: 0.5;
    transform: rotate(5deg);
}

.kanban-card.overdue {
    border-left: 4px solid var(--error);
}

[data-theme="dark"] .kanban-card {
    background: var(--bg-tertiary);
    border-color: var(--gray-600);
}

.card-title {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    font-size: 0.875rem;
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin-bottom: var(--space-2);
    line-height: 1.4;
}

.card-labels {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    margin-bottom: var(--space-2);
}

.card-label {
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 0.625rem;
    font-weight: var(--font-weight-medium);
    color: white;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.card-due-date {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.card-due-date.overdue {
    color: var(--error);
}

.card-progress {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.add-card-btn {
    width: 100%;
    padding: var(--space-3);
    border: 2px dashed var(--gray-300);
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-base);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-weight: var(--font-weight-medium);
}

.add-card-btn:hover {
    border-color: var(--brand-primary);
    color: var(--brand-primary);
    background: rgba(59, 130, 246, 0.1);
}

[data-theme="dark"] .add-card-btn {
    border-color: var(--gray-600);
}

/* --- Drag and Drop Styles --- */
.drop-zone {
    background: rgba(59, 130, 246, 0.1);
    border: 2px dashed var(--brand-primary);
    border-radius: var(--radius-base);
    padding: var(--space-2);
    margin: var(--space-1) 0;
    transition: all var(--transition-base);
}

.drag-over {
    background: rgba(59, 130, 246, 0.2);
}

/* --- Modal Styles --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    padding: var(--space-4);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-small .modal-content {
    max-width: 400px;
}

.modal-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

[data-theme="dark"] .modal-header {
    border-bottom-color: var(--gray-700);
}

.modal-header h3 {
    margin: 0;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-base);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: var(--gray-200);
    color: var(--text-primary);
}

[data-theme="dark"] .modal-close:hover {
    background: var(--gray-600);
}

.modal-body {
    padding: var(--space-6);
}

.modal-footer {
    padding: var(--space-6);
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

[data-theme="dark"] .modal-footer {
    border-top-color: var(--gray-700);
}

.modal-actions {
    display: flex;
    gap: var(--space-3);
}

/* --- Form Styles --- */
.form-group {
    margin-bottom: var(--space-4);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-3);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-base);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-family);
    transition: border-color var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
    border-color: var(--gray-600);
    background: var(--bg-tertiary);
}

.form-group textarea {
    resize: vertical;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.input-message {
    background: var(--gray-100);
    padding: var(--space-3);
    border-radius: var(--radius-base);
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

[data-theme="dark"] .input-message {
    background: var(--gray-700);
}

/* --- Labels Styles --- */
.labels-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.labels-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.label-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--gray-100);
    border-radius: var(--radius-base);
    font-size: 0.875rem;
}

[data-theme="dark"] .label-item {
    background: var(--gray-700);
}

.label-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.label-checkbox {
    margin-right: var(--space-2);
}

.label-remove {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 2px;
    border-radius: var(--radius-base);
    transition: all var(--transition-base);
}

.label-remove:hover {
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

/* --- Color Picker Styles --- */
.color-picker {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.color-presets {
    display: flex;
    gap: var(--space-2);
}

.color-preset {
    width: 32px;
    height: 32px;
    border: 2px solid transparent;
    border-radius: var(--radius-base);
    cursor: pointer;
    transition: all var(--transition-base);
}

.color-preset:hover {
    transform: scale(1.1);
    border-color: var(--gray-400);
}

.color-preset[data-color="#3B82F6"] { background: #3B82F6; }
.color-preset[data-color="#10B981"] { background: #10B981; }
.color-preset[data-color="#8B5CF6"] { background: #8B5CF6; }
.color-preset[data-color="#EF4444"] { background: #EF4444; }
.color-preset[data-color="#F59E0B"] { background: #F59E0B; }
.color-preset[data-color="#EC4899"] { background: #EC4899; }

/* --- Checklist Styles --- */
.checklist-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.checklist-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    background: var(--gray-50);
    border-radius: var(--radius-base);
}

[data-theme="dark"] .checklist-item {
    background: var(--gray-800);
}

.checklist-item input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.checklist-item input[type="text"] {
    flex: 1;
    padding: var(--space-1) var(--space-2);
    border: 1px solid transparent;
    background: transparent;
    font-size: 0.875rem;
}

.checklist-item input[type="text"]:focus {
    border-color: var(--brand-primary);
    background: var(--bg-primary);
}

.checklist-remove {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-base);
    transition: all var(--transition-base);
}

.checklist-remove:hover {
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

/* --- Responsive Adjustments --- */
@media (max-width: 768px) {
    .board-header {
        padding: var(--space-4);
    }
    
    .board-controls {
        gap: var(--space-3);
    }
    
    .board-selector {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }
    
    .board-actions {
        width: 100%;
        justify-content: flex-start;
    }
    
    .modal-content {
        margin: var(--space-2);
        max-height: calc(100vh - var(--space-4));
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--space-4);
    }
}

/* --- Animations --- */
@keyframes slideIn {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.kanban-card {
    animation: fadeIn 0.3s ease-out;
}

/* --- Print Styles --- */
@media print {
    .navbar,
    .board-header,
    .modal-overlay {
        display: none !important;
    }
    
    .main-content {
        padding: 0;
    }
    
    .kanban-board {
        box-shadow: none;
        border: 1px solid #000;
    }
}

.tool-hero {
    margin-top: 0;
    padding: 120px 0 80px;
    position: relative;
    z-index: 2;
    background: linear-gradient(135deg, var(--bg-primary) 0%, rgba(59, 130, 246, 0.1) 30%, rgba(16, 185, 129, 0.1) 70%, var(--bg-primary) 100%);
    overflow: hidden;
}

.tool-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}