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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

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

header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

h2 {
    color: white;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.current-readings {
    background: white;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.reading-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.card {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 12px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.temperature-card {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.pressure-card {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.light-card {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
}

.color-card {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}

.card-icon {
    font-size: 2.5rem;
}

.card-content {
    flex: 1;
}

.card-value {
    font-size: 2rem;
    font-weight: bold;
    color: white;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.card-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 5px;
}

.color-swatch {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    border: 3px solid white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.last-update {
    text-align: right;
    color: #666;
    font-size: 0.9rem;
    font-style: italic;
}

.stats-section {
    background: white;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.stat-card {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 20px;
    border-left: 4px solid #667eea;
}

.stat-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 15px;
}

.stat-values {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #e0e0e0;
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-label {
    color: #666;
    font-weight: 500;
}

.stat-value {
    font-weight: bold;
    color: #333;
}

.charts-section {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.chart-container {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
}

.chart-container:last-child {
    margin-bottom: 0;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .reading-cards {
        grid-template-columns: 1fr;
    }

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

    .card {
        padding: 20px;
    }

    .card-value {
        font-size: 1.5rem;
    }
}