a {
    color: #96afffff;
    text-decoration: none;
}

:root {
    --bg: #0f172a;
    --card: #1e293b;
    --accent: #38bdf8;
    --text: #f8fafc;
    --input: #334155;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    display: flex;
    justify-content: center;
    padding: 40px 20px;
}

.container {
    background-color: var(--card);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    max-width: 600px;
    width: 100%;
}

h2 {
    color: var(--accent);
    margin-top: 0;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 5px;
    color: #94a3b8;
}

select,
input {
    width: 100%;
    padding: 10px;
    background: var(--input);
    border: 1px solid #475569;
    color: white;
    border-radius: 6px;
    outline: none;
}

.output-box {
    background: #000;
    padding: 15px;
    border-left: 4px solid var(--accent);
    font-family: 'Courier New', monospace;
    margin-top: 20px;
    position: relative;
}

button {
    background-color: var(--accent);
    color: #0f172a;
    border: none;
    padding: 12px 20px;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    width: 100%;
    transition: opacity 0.2s;
}

button:hover {
    opacity: 0.9;
}

.hint {
    font-size: 0.75rem;
    color: #64748b;
    margin-top: 5px;
}