:root {
    --primary-color: #333333;
    --accent-color: #000000;
    --text-color: #ffffff;
    --background-color: #121212;
    --card-color: #1e1e1e;
    --border-color: #444444;
    --highlight-color: #ffffff;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-color);
    opacity: 0.8;
}

.info-section {
    margin-bottom: 40px;
}

.info-box {
    background-color: var(--card-color);
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.info-box h2 {
    color: var(--text-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.info-box ul {
    margin: 15px 0 15px 20px;
}

.input-section {
    margin-bottom: 30px;
}

.form-group {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

label {
    font-size: 1.1rem;
    font-weight: 600;
}

input {
    padding: 10px 15px;
    border: 2px solid var(--border-color);
    background-color: var(--card-color);
    color: var(--text-color);
    border-radius: 4px;
    font-size: 1rem;
    width: 150px;
}

input:focus {
    border-color: white;
    outline: none;
}

button {
    padding: 10px 20px;
    background-color: var(--card-color);
    color: white;
    border: 2px solid white;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
}

button:hover {
    background-color: white;
    color: black;
}

.error-message {
    color: #ffffff;
    text-align: center;
    margin-top: 10px;
    font-weight: 600;
}

.stats-section {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.stat-box {
    background-color: var(--card-color);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    width: 200px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--highlight-color);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 5px;
}

.sequence-section {
    background-color: var(--card-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.sequence-section h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
    color: var(--text-color);
}

.sequence-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.sequence-value {
    display: inline-block;
    padding: 5px 10px;
    background-color: var(--primary-color);
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9rem;
    border: 1px solid #555;
}

.plot-container {
    width: 100%;
    height: 600px;
    margin-bottom: 40px;
    background-color: var(--card-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

footer {
    text-align: center;
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    opacity: 0.7;
}

footer a {
    color: var(--text-color);
    text-decoration: none;
    border-bottom: 1px dotted white;
    padding-bottom: 1px;
}

footer a:hover {
    border-bottom: 1px solid white;
}

@media (max-width: 768px) {
    .stats-section {
        flex-direction: column;
        align-items: center;
    }
    
    .stat-box {
        width: 100%;
        max-width: 250px;
    }
    
    .plot-container {
        height: 400px;
    }
}