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

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --danger-color: #dc2626;
    --danger-hover: #b91c1c;
    --success-color: #16a34a;
    --background: #f8fafc;
    --card-background: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.login-box {
    background: var(--card-background);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 450px;
    box-shadow: var(--shadow-lg);
}

.login-box h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 28px;
}

.login-box h2 {
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 20px;
    font-weight: 400;
}

.login-info {
    margin-top: 30px;
    padding: 20px;
    background: var(--background);
    border-radius: 8px;
    font-size: 14px;
}

.login-info code {
    background: var(--card-background);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

.login-info .warning {
    color: var(--danger-color);
    margin-top: 10px;
    font-weight: 500;
}

/* Dashboard */
.dashboard-container {
    min-height: 100vh;
}

.dashboard-header {
    background: var(--card-background);
    padding: 20px 30px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.dashboard-header h1 {
    color: var(--primary-color);
    font-size: 24px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.username {
    color: var(--text-secondary);
}

.dashboard-content {
    display: flex;
    gap: 30px;
    padding: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

/* Sidebar */
.sidebar {
    width: 280px;
    flex-shrink: 0;
}

.sidebar-section {
    background: var(--card-background);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.sidebar-section h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.stats-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    background: var(--background);
    border-radius: 8px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
}

.stat-value {
    font-weight: 600;
    color: var(--primary-color);
}

.filter-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-btn {
    padding: 10px 15px;
    border: 2px solid var(--border-color);
    background: var(--card-background);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
    font-size: 14px;
    color: var(--text-primary);
}

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

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

/* Main Content */
.main-content {
    flex: 1;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.content-header h2 {
    font-size: 24px;
    color: var(--text-primary);
}

.accounts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.account-card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    border: 2px solid transparent;
}

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

.account-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 15px;
}

.account-type {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.account-type.allegiant_air {
    background: #fef3c7;
    color: #92400e;
}

.account-type.hotel_chain {
    background: #dbeafe;
    color: #1e40af;
}

.account-type.other {
    background: #e9d5ff;
    color: #6b21a8;
}

.account-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.account-email {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 15px;
}

.account-points {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.points-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
}

.points-label {
    color: var(--text-secondary);
    font-size: 14px;
}

.account-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

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

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

.btn-secondary:hover {
    background: #475569;
}

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

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

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

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group input[readonly] {
    background: var(--background);
    cursor: not-allowed;
}

.error-message {
    color: var(--danger-color);
    font-size: 14px;
    margin-top: 10px;
    display: none;
}

.error-message.show {
    display: block;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--card-background);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background 0.2s;
}

.modal-close:hover {
    background: var(--background);
}

.modal form {
    padding: 30px;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 25px;
}

.account-details {
    padding: 30px;
}

.detail-row {
    display: flex;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    font-weight: 600;
    color: var(--text-secondary);
    width: 150px;
    flex-shrink: 0;
}

.detail-value {
    color: var(--text-primary);
    flex: 1;
}

/* Notification */
.notification {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    display: none;
    animation: slideInRight 0.3s ease;
    max-width: 400px;
}

.notification.show {
    display: block;
}

.notification.success {
    background: var(--success-color);
    color: white;
}

.notification.error {
    background: var(--danger-color);
    color: white;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-content {
        flex-direction: column;
        padding: 20px;
    }

    .sidebar {
        width: 100%;
    }

    .accounts-grid {
        grid-template-columns: 1fr;
    }

    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .modal-content {
        width: 95%;
        margin: 20px;
    }
}