/* Standalone page styles */
body {
    background-color: #f8f9fa;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.page-header {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    overflow: hidden;
}

.page-header h1 {
    margin: 0;
    color: #333;
    font-size: 1.75rem;
}

.page-header .merchant-info {
    color: #6c757d;
    margin-top: 8px;
    font-size: 0.95rem;
}

.btn-logout {
    background: transparent;
    border: none;
    color: #dc3545;
    font-size: 1.25rem;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-logout:hover {
    background: #fff5f5;
    color: #c82333;
    transform: scale(1.1);
}

.btn-logout:active {
    transform: scale(0.95);
}

.devices-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.device-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    overflow: hidden;
}

.device-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.device-card.has-ws-server {
    border: 2px solid #0d6efd;
    box-shadow: 0 2px 8px rgba(13, 110, 253, 0.3);
}

.device-card.has-ws-server:hover {
    box-shadow: 0 4px 16px rgba(13, 110, 253, 0.4);
}

.device-card.has-ws-server .device-card-header {
    background: linear-gradient(135deg, #0d6efd 0%, #0056b3 100%);
    border-bottom: 2px solid #0d6efd;
    box-shadow: 0 2px 6px rgba(13, 110, 253, 0.3);
}

.device-card-header {
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%);
    color: white;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 6px rgba(108, 117, 125, 0.3);
}

.device-card-header h5 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.device-card-header .status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    font-size: 0.85rem;
}

.device-card-header .status-badge.online {
    background: #28a745;
    color: white;
}

.device-card-header .status-badge.offline {
    background: rgba(108, 117, 125, 0.3);
}

.device-card-body {
    padding: 20px;
}

.device-info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #e9ecef;
}

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

.device-info-label {
    color: #6c757d;
    font-size: 0.9rem;
    font-weight: 500;
}

.device-info-value {
    color: #333;
    font-size: 0.95rem;
    font-weight: 600;
    text-align: right;
}

.device-services {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-top: 10px;
}

.service-badge {
    display: inline-block;
    padding: 3px 8px;
    background: #e9ecef;
    color: #495057;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.loading-container {
    text-align: center;
    padding: 60px 20px;
    color: #6c757d;
}

.loading-container i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #007bff;
}

.error-container {
    text-align: center;
    padding: 60px 20px;
    color: #dc3545;
}

.error-container i {
    font-size: 3rem;
    margin-bottom: 20px;
}

.empty-container {
    text-align: center;
    padding: 60px 20px;
    color: #6c757d;
}

.empty-container i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #adb5bd;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .devices-container {
        grid-template-columns: 1fr;
    }

    .page-header {
        padding: 15px;
    }

    .page-header h1 {
        font-size: 1.5rem;
    }
}