body {
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f6f8;
    color: #333;
}

header {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #007bff;
    color: white;
    padding: 15px;
    text-align: center;
}

.container {
    max-width: 1000px;
    margin: 20px auto;
    padding: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.bins-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
    justify-content: center;
}

.bin-card {
    background: #f9f9f9;
    padding: 15px;
    border-radius: 12px;
    width: 250px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    text-align: center;
}

.fill-bar {
    width: 50px;
    height: 150px;
    background: #ddd;
    margin: 10px auto;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.fill {
    width: 100%;
    background: #28a745;
    position: absolute;
    bottom: 0;
    transition: height 0.5s;
}

.status {
    font-weight: bold;
}