body {
    font-family: "Segoe UI", system-ui, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f8f9fa;
    color: #212529;
}

h1 {
    text-align: center;
    margin-bottom: 2rem;
}

.container {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.disk-track {
    position: relative;
    width: 100%;
    height: 80px;
    background: linear-gradient(to right, #e9ecef, #dee2e6);
    border-radius: 8px;
    margin: 2rem 0;
}

.head {
    position: absolute;
    width: 20px;
    height: 50px;
    background: linear-gradient(45deg, #ff4d4d, #ff6b6b);
    border-radius: 6px;
    top: 15px;
    transform: translateX(-50%);
    transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(255, 77, 77, 0.3);
}

.request {
    position: absolute;
    width: 12px;
    height: 12px;
    background-color: #339af0;
    border-radius: 50%;
    top: 34px;
    transform: translateX(-50%);
    transition: background-color 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.served {
    background-color: #51cf66;
    transform: translateX(-50%) scale(1.2);
}

.controls {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #dee2e6;
}

.input-row {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.buttons-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

button {
    padding: 10px 20px;
    background: linear-gradient(45deg, #339af0, #228be6);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: transform 0.2s, box-shadow 0.2s;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(34, 139, 230, 0.2);
}

input,
select {
    padding: 8px 12px;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.2s;
}

input:focus,
select:focus {
    outline: none;
    border-color: #339af0;
    box-shadow: 0 0 0 3px rgba(51, 154, 240, 0.1);
}

#stats {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background-color: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #dee2e6;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-weight: 600;
    color: #339af0;
}

@keyframes pulse {
    0% { transform: translateX(-50%) scale(1); }
    50% { transform: translateX(-50%) scale(1.3); }
    100% { transform: translateX(-50%) scale(1.2); }
}

.copyright {
    margin-top: 20px;
    text-align: center;
    color: #666;
    font-size: 0.9em;
}