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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

/* Login Container */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    text-align: center;
    color: #667eea;
    margin-bottom: 10px;
    font-size: 32px;
}

.login-box h2 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 24px;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #888;
    font-size: 12px;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: #667eea;
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background: #5568d3;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

.btn-warning {
    background: #ffc107;
    color: #333;
}

.btn-warning:hover {
    background: #e0a800;
}

.btn-large {
    padding: 15px 30px;
    font-size: 16px;
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Alerts */
.alert {
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success {
    background: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.alert-error {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.alert-info {
    background: #d1ecf1;
    border: 1px solid #bee5eb;
    color: #0c5460;
}

.alert-warning {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
}

/* Register Link */
.register-link {
    text-align: center;
    margin-top: 20px;
    color: #666;
}

.register-link a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

.register-link a:hover {
    text-decoration: underline;
}

/* Navbar */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-container h1 {
    color: #667eea;
    font-size: 24px;
}

.nav-right {
    display: flex;
    gap: 10px;
    align-items: center;
}

.user-info {
    margin-right: 15px;
    font-weight: 600;
    color: #333;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

/* Card */
.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    padding: 30px;
    margin-bottom: 30px;
}

.card h2 {
    color: #333;
    margin-bottom: 20px;
    font-size: 24px;
}

/* Form Section */
.form-section {
    max-width: 600px;
}

/* PO Progress Item */
.po-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    margin-bottom: 10px;
    transition: all 0.3s;
}

.po-item.processing {
    border-color: #ffc107;
    background: #fff9e6;
}

.po-item.completed {
    border-color: #28a745;
    background: #e8f5e9;
}

.po-item.failed {
    border-color: #dc3545;
    background: #fce8e8;
}

.po-item.duplicate {
    border-color: #ff9800;
    background: #fff3e0;
    opacity: 0.8;
}

.po-item.skipped {
    border-color: #ff9800;
    background: #fff3e0;
    opacity: 0.7;
}

.po-info {
    flex: 1;
}

.po-number {
    font-weight: 600;
    font-size: 16px;
    color: #333;
}

.po-filename {
    font-size: 12px;
    color: #666;
    margin-top: 3px;
}

.po-status {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.po-status.pending {
    background: #e0e0e0;
    color: #666;
}

.po-status.processing {
    background: #ffc107;
    color: #333;
}

.po-status.completed {
    background: #28a745;
    color: white;
}

.po-status.failed {
    background: #dc3545;
    color: white;
}

.po-status.duplicate {
    background: #ff9800;
    color: white;
}

/* Summary Stats */
.summary-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.stat-box {
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    color: white;
}

.stat-total {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.stat-success {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
}

.stat-skipped {
    background: linear-gradient(135deg, #ff9800 0%, #ffc107 100%);
}

.stat-failed {
    background: linear-gradient(135deg, #dc3545 0%, #fd7e14 100%);
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 48px;
    font-weight: 700;
}

/* Tables */
.history-table, .admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.history-table th, .admin-table th {
    background: #f8f9fa;
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: #333;
    border-bottom: 2px solid #dee2e6;
}

.history-table td, .admin-table td {
    padding: 12px;
    border-bottom: 1px solid #dee2e6;
}

.history-table tr:hover, .admin-table tr:hover {
    background: #f8f9fa;
}

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

.text-success {
    color: #28a745;
    font-weight: 600;
}

.text-danger {
    color: #dc3545;
    font-weight: 600;
}

/* Badge */
.badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: #28a745;
    color: white;
}

.badge-warning {
    background: #ffc107;
    color: #333;
}

.badge-danger {
    background: #dc3545;
    color: white;
}

.badge-secondary {
    background: #6c757d;
    color: white;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

/* Spinner */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 15px;
    }

    .nav-right {
        flex-direction: column;
        width: 100%;
    }

    .nav-right .btn {
        width: 100%;
    }

    .summary-stats {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons .btn {
        width: 100%;
    }
}