/* Modern, Elegant Styles for Migration Dashboard */

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --danger-gradient: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
    --dark-bg: #1a1d29;
    --card-bg: #ffffff;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --border-color: #e2e8f0;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background: var(--primary-gradient) !important;
    box-shadow: var(--shadow-md);
    padding: 1rem 0;
    border-bottom: none;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: -0.5px;
}

.user-avatar {
    font-size: 1.5rem;
    opacity: 0.9;
}

/* Sign In Section */
.sign-in-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 80px);
    padding: 2rem;
}

.sign-in-card {
    background: var(--card-bg);
    border-radius: 24px;
    padding: 3.5rem 3rem;
    box-shadow: var(--shadow-xl);
    max-width: 480px;
    width: 100%;
    text-align: center;
    animation: slideUp 0.6s ease-out;
}

.sign-in-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    background: var(--primary-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    box-shadow: var(--shadow-lg);
}

.sign-in-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -1px;
}

.sign-in-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.btn-sign-in {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.btn-sign-in:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.btn-sign-in:active {
    transform: translateY(0);
}

.sign-in-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.feature-item i {
    color: #48bb78;
    font-size: 1.1rem;
}

/* Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.dashboard-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
}

.dashboard-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

.btn-refresh {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    background: white;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.btn-refresh:hover {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    transform: rotate(180deg);
}

/* Stats Cards */
.stat-card {
    background: white;
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.stat-primary .stat-icon {
    background: var(--primary-gradient);
}

.stat-success .stat-icon {
    background: var(--success-gradient);
}

.stat-warning .stat-icon {
    background: var(--warning-gradient);
}

.stat-danger .stat-icon {
    background: var(--danger-gradient);
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.25rem;
}

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

/* Batch Cards */
.batch-card {
    background: white;
    border-radius: 16px;
    padding: 1.75rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.batch-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.batch-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.batch-card:hover::before {
    transform: scaleY(1);
}

.batch-card .card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.batch-card .card-title i {
    color: #667eea;
}

.batch-card .card-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.batch-card .badge {
    font-size: 0.8rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.batch-card .btn {
    margin-top: 0.75rem;
    border-radius: 8px;
    font-weight: 500;
    padding: 0.5rem 1.25rem;
    transition: all 0.3s ease;
}

.batch-card .btn:hover {
    transform: translateX(4px);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
}

.empty-state-icon {
    font-size: 4rem;
    color: var(--text-secondary);
    opacity: 0.5;
    margin-bottom: 1.5rem;
}

.empty-state-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Loading */
.loading-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
    padding: 4rem;
}

.spinner-wrapper {
    text-align: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1.5rem;
}

.loading-text {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Alerts */
.alert-modern {
    border-radius: 12px;
    border: none;
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.alert-modern i {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.alert-modern .btn-close {
    margin-left: auto;
    opacity: 0.5;
}

/* Modal */
.modal-modern {
    border: none;
    border-radius: 20px;
    overflow: hidden;
}

.modal-header-modern {
    background: var(--primary-gradient);
    color: white;
    border-bottom: none;
    padding: 1.5rem 2rem;
}

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

.modal-body {
    padding: 2rem;
    max-height: 70vh;
    overflow-y: auto;
}

.modal-footer-modern {
    border-top: 1px solid var(--border-color);
    padding: 1.25rem 2rem;
    background: #f8f9fa;
}

.btn-secondary-modern {
    background: white;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 0.6rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-secondary-modern:hover {
    background: var(--text-primary);
    color: white;
    border-color: var(--text-primary);
}

/* Tables */
.table {
    border-radius: 12px;
    overflow: hidden;
}

.table thead {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.table thead th {
    border: none;
    padding: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: all 0.2s ease;
}

.table tbody tr:hover {
    background: #f8f9fa;
    transform: scale(1.01);
}

.table tbody td {
    padding: 1rem;
    border-color: var(--border-color);
    vertical-align: middle;
}

.progress {
    height: 24px;
    border-radius: 12px;
    background: #e2e8f0;
    overflow: hidden;
}

.progress-bar {
    background: var(--success-gradient);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

/* Badges */
.badge {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.3px;
}

.bg-success {
    background: var(--success-gradient) !important;
}

.bg-primary {
    background: var(--primary-gradient) !important;
}

.bg-warning {
    background: var(--warning-gradient) !important;
    color: white !important;
}

.bg-danger {
    background: var(--danger-gradient) !important;
}

.bg-secondary {
    background: #cbd5e0 !important;
}

/* Responsive */
@media (max-width: 768px) {
    .sign-in-card {
        padding: 2.5rem 2rem;
    }
    
    .dashboard-header {
        flex-direction: column;
    }
    
    .stat-card {
        padding: 1.25rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .batch-card {
        padding: 1.25rem;
    }
}

/* Smooth transitions */
* {
    transition: background-color 0.2s ease, color 0.2s ease;
}