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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: #f5f5f5;
    color: #333;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.devices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.device-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.device-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.device-header h3 {
    margin: 0;
    color: #2c3e50;
}

.status {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
}

.status.online {
    background: #d4edda;
    color: #155724;
}

.status.offline {
    background: #f8d7da;
    color: #721c24;
}

.device-info {
    margin-bottom: 15px;
    font-size: 14px;
}

.device-info p {
    margin: 5px 0;
    color: #666;
}

.device-info code {
    background: #f8f9fa;
    padding: 2px 4px;
    border-radius: 4px;
    font-size: 12px;
}

.sensor-data {
    margin: 15px 0;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 4px;
}

.sensor-data h4 {
    margin-bottom: 10px;
    color: #2c3e50;
}

.sensor-readings {
    font-size: 14px;
}

.sensor-readings .reading {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
    border-bottom: 1px dashed #ddd;
}

.sensor-readings .reading:last-child {
    border-bottom: none;
}

.device-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    background: #e9ecef;
    color: #495057;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.btn:hover {
    background: #dee2e6;
}

.btn-primary {
    background: #007bff;
    color: white;
}

.btn-primary:hover {
    background: #0056b3;
}

/* Modal styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 8px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.form-group textarea {
    min-height: 100px;
    font-family: monospace;
}

/* Responsive */
@media (max-width: 768px) {
    .devices-grid {
        grid-template-columns: 1fr;
    }
    
    header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}