body {
    font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, 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: 120px;
    background: linear-gradient(to right, #e9ecef, #dee2e6);
    border-radius: 8px;
    margin: 2rem 0;
    padding: 1rem 0;
}

.track-scale {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 24px;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    color: #666;
    font-size: 0.8rem;
}

.head {
    position: absolute;
    width: 20px;
    height: 60px;
    background: linear-gradient(45deg, #ff4d4d, #ff6b6b);
    border-radius: 6px;
    top: 25px;
    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: 49px;
    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 auto 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: center;
}

.buttons-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    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:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

button.active {
    background: linear-gradient(45deg, #40c057, #37b24d);
    box-shadow: 0 4px 12px rgba(55, 178, 77, 0.2);
}

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;
}

.copyright a {
    color: #339af0;
    text-decoration: none;
    transition: color 0.2s;
}

.copyright a:hover {
    color: #228be6;
    text-decoration: underline;
}

.algorithm-comparison {
    margin-top: 2rem;
    background-color: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #dee2e6;
}

.algorithm-comparison summary {
    padding: 1rem 1.5rem;
    cursor: pointer;
    font-weight: 500;
    color: #339af0;
    user-select: none;
}

.algorithm-comparison summary:hover {
    background-color: #e9ecef;
}

.comparison-content {
    padding: 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.algorithm-card {
    background-color: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.algorithm-card h3,
.seek-time-comparison h3 {
    color: #339af0;
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.algorithm-card ul {
    margin: 0;
    padding-left: 1.2rem;
}

.algorithm-card li {
    margin-bottom: 0.5rem;
    color: #495057;
    line-height: 1.5;
}

.algorithm-card li:last-child {
    margin-bottom: 0;
}

.seek-time-comparison {
    margin-top: 2rem;
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #dee2e6;
}

.seek-time-comparison h3 {
    color: #339af0;
    margin-top: 0;
    margin-bottom: 1rem;
}

#comparisonTable {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    overflow: hidden;
}

#comparisonTable th,
#comparisonTable td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #dee2e6;
}

#comparisonTable th {
    background-color: #e9ecef;
    font-weight: 600;
    color: #495057;
}

#comparisonTable tr:last-child td {
    border-bottom: none;
}

#comparisonTable td:nth-child(2) {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    color: #339af0;
    font-weight: 600;
}

#comparisonTable td:nth-child(3) {
    font-size: 0.9em;
    color: #666;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .seek-time-comparison {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    #comparisonTable {
        min-width: 600px;
    }
    
    .input-row {
        grid-template-columns: auto 1fr;
    }
}

.comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.comparison-header h3 {
    margin: 0;
}

.comparison-footer {
    display: flex;
    justify-content: flex-end;
    margin-top: 1rem;
}

.reset-table-btn {
    background: linear-gradient(45deg, #868e96, #495057);
    padding: 8px 16px;
    font-size: 0.9em;
}

.reset-table-btn:hover {
    background: linear-gradient(45deg, #495057, #343a40);
}