:root {
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-secondary: #64748b;
    --color-secondary-hover: #475569;
    --color-success: #16a34a;
    --color-success-hover: #15803d;
    --color-error: #dc2626;
    --color-error-hover: #b91c1c;
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --radius: 8px;
    --transition: 150ms ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    padding: 24px;
}

body.login-page {
    padding: 0;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

.header {
    margin-bottom: 32px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.header-content > div {
    flex: 1;
    min-width: 200px;
}

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin: 0;
}

.subtitle {
    color: var(--color-text-muted);
    margin-top: 4px;
    margin-bottom: 0;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.card h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text);
}

.sync-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color var(--transition), opacity var(--transition);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-secondary-hover);
}

.btn-success {
    background-color: var(--color-success);
    color: white;
    width: 100%;
    margin-top: 8px;
}

.btn-success:hover:not(:disabled) {
    background-color: var(--color-success-hover);
}

.btn-loader {
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.hidden {
    display: none !important;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

.input-group input {
    padding: 10px 12px;
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.input-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.input-with-btn {
    display: flex;
    gap: 8px;
}

.input-with-btn input {
    flex: 1;
    padding: 10px 12px;
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.input-with-btn input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.result {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.875rem;
}

.result.success {
    background-color: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
}

.result.error {
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.result.info {
    background-color: #eff6ff;
    border: 1px solid #bfdbfe;
    color: #1e40af;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    align-items: end;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-field label {
    font-size: 0.875rem;
    font-weight: 500;
}

.form-field input {
    padding: 10px 12px;
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-field input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

#salesTableContainer {
    margin-top: 16px;
    overflow-x: auto;
}

#salesTable {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

#salesTable th,
#salesTable td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

#salesTable th {
    font-weight: 600;
    color: var(--color-text-muted);
    background-color: var(--color-bg);
}

#salesTable tbody tr:hover {
    background-color: var(--color-bg);
}

#salesTable td.processed-true {
    color: var(--color-success);
    font-weight: 500;
}

#salesTable td.processed-false {
    color: var(--color-error);
    font-weight: 500;
}

/* Last sync executions styles */
#lastSyncContainer {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.sync-info {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px;
}

.sync-info h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
}

.sync-detail {
    font-size: 0.875rem;
    margin-bottom: 8px;
    color: var(--color-text);
}

.sync-detail:last-child {
    margin-bottom: 0;
}

.sync-detail strong {
    color: var(--color-text-muted);
}

.status-badge {
    display: inline-block;
    padding: 4px 8px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
}

.status-badge.status-success {
    background-color: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.status-badge.status-error {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

#noSyncData {
    text-align: center;
    padding: 24px;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-md);
    margin: 24px;
}

.login-header {
    text-align: center;
    margin-bottom: 24px;
}

.login-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.btn-block {
    width: 100%;
}

@media (max-width: 600px) {
    body {
        padding: 16px;
    }
    
    .card {
        padding: 16px;
    }
    
    .sync-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .input-with-btn {
        flex-direction: column;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .login-card {
        padding: 24px;
    }
    
    #lastSyncContainer {
        grid-template-columns: 1fr;
    }
}