/* IoT Homepage Styles */
.iot-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.hero-section {
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 20px;
    border-radius: 20px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
    margin-bottom: 0;
}

.sensor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.sensor-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border: 1px solid #e1e8ed;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
}

.sensor-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
}

.sensor-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    text-decoration: none;
}

.sensor-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
    text-align: center;
}

.outdoor-temp .sensor-icon {
    color: #4CAF50;
}

.server-temp .sensor-icon {
    color: #2196F3;
}

.sensor-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    text-align: center;
    color: #333;
}

.sensor-description {
    color: #666;
    text-align: center;
    line-height: 1.6;
    margin-bottom: 20px;
}

.sensor-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    color: #28a745;
    font-weight: 500;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #28a745;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.footer-info {
    text-align: center;
    margin-top: 60px;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 15px;
    color: #666;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .sensor-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .iot-container {
        padding: 10px;
    }
}