:root {
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --secondary: #64748b;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --bg-main: #f8fafc;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Prompt', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    overflow: hidden; /* Prevent body scroll, handle scroll in main-content */
}

/* App Layout */
.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    z-index: 10;
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
    color: var(--primary);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-header p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.role-switcher {
    padding: 1.5rem;
    flex-grow: 1;
}

.role-switcher h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.role-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.role-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s ease;
}

.role-btn i {
    width: 20px;
    color: var(--text-secondary);
}

.role-btn:hover {
    background-color: var(--bg-main);
}

.role-btn.active {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    font-weight: 600;
}

.role-btn.active i {
    color: var(--primary);
}

/* Main Content */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.top-header {
    height: 80px;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    box-shadow: var(--shadow-sm);
    z-index: 5;
}

.header-title h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

.header-title p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    border: none;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--bg-main);
}

.btn-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.btn-danger:hover {
    background-color: var(--danger);
    color: white;
}

/* Views */
.view-container {
    flex-grow: 1;
    overflow-y: auto;
    padding: 2rem;
    background-color: var(--bg-main);
}

.view {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view.active {
    display: block;
}

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

/* Dashboard Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    box-shadow: var(--shadow);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-info h3 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 0.25rem;
}

/* Dashboard Charts */
.dashboard-charts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.chart-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.chart-card h3 {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.team-progress-item {
    margin-bottom: 1rem;
}

.team-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.progress-track {
    height: 8px;
    background-color: var(--bg-main);
    border-radius: 4px;
    overflow: hidden;
    display: flex;
}

.progress-fill {
    height: 100%;
    transition: width 1s ease-in-out;
}

/* Kanban Board */
.kanban-board {
    display: flex;
    gap: 1.5rem;
    height: calc(100vh - 160px);
    overflow-x: auto;
    padding-bottom: 1rem;
}

.kanban-column {
    flex: 0 0 320px;
    background-color: var(--bg-sidebar);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
    max-height: 100%;
}

.column-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.column-title {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.todo-dot { background-color: var(--secondary); }
.today-dot { background-color: var(--primary); }
.done-dot { background-color: var(--success); }
.notes-dot { background-color: var(--danger); }

.task-count {
    background-color: var(--bg-main);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.kanban-cards {
    flex-grow: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 150px;
}

.kanban-cards.drag-over {
    background-color: rgba(59, 130, 246, 0.05);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Task Card */
.task-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem;
    box-shadow: var(--shadow-sm);
    cursor: grab;
    transition: all 0.2s ease;
    position: relative;
}

.task-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--primary);
}

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

.task-card.dragging {
    opacity: 0.5;
    transform: scale(0.95);
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.task-team-badge {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 600;
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary);
}

.task-team-badge.contractor-electrical {
    background-color: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.task-team-badge.contractor-mechanical {
    background-color: rgba(139, 92, 246, 0.1);
    color: #7c3aed;
}

.task-title {
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1.4;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.task-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.task-detail-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.task-detail-item i {
    width: 14px;
    text-align: center;
}

.task-image-thumb {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 4px;
    margin-top: 0.75rem;
    cursor: pointer;
    border: 1px solid var(--border);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.show {
    display: flex;
    opacity: 1;
}

.modal-content {
    background-color: var(--bg-card);
    width: 100%;
    max-width: 600px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transform: translateY(20px);
    transition: transform 0.3s ease;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-overlay.show .modal-content {
    transform: translateY(0);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.close-btn:hover {
    color: var(--danger);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

input[type="text"],
input[type="date"],
input[type="number"],
select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
    background-color: var(--bg-main);
}

input:focus, select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.image-upload-wrapper {
    position: relative;
    border: 2px dashed var(--border);
    border-radius: var(--radius-md);
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-main);
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.2s;
}

.image-upload-wrapper:hover {
    border-color: var(--primary);
}

.image-upload-wrapper input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
}

.image-preview {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    background-size: cover;
    background-position: center;
    position: relative;
    z-index: 1;
}

.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.action-right {
    display: flex;
    gap: 1rem;
}

/* Image Viewer Modal */
.image-viewer-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
}

.image-viewer-content img {
    max-width: 100%;
    max-height: 90vh;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    display: block;
}

.close-image-btn {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
}

/* Recent Tasks List (Dashboard) */
.recent-task-item {
    display: flex;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.recent-task-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.recent-task-status {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 1rem;
}

.recent-task-details {
    flex-grow: 1;
}

.recent-task-title {
    font-weight: 500;
    font-size: 0.95rem;
}

.recent-task-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    display: flex;
    gap: 1rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .dashboard-charts {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    
    .role-switcher {
        display: none; /* In a real app, make this a dropdown on mobile */
    }
    
    .role-switcher.mobile-open {
        display: block;
    }
    
    .kanban-board {
        flex-direction: column;
        height: auto;
        overflow-y: auto;
    }
    
    .kanban-column {
        flex: 0 0 auto;
        height: 400px;
    }
}