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

body {
    background: #1a1a1a;
    color: #f0f0f0;
    font-family: sans-serif;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

h1 {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

p.subtitle {
    color: #888;
    margin-bottom: 2rem;
    font-size: 1rem;
}

label {
    display: block;
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

textarea {
    width: 100%;
    height: 150px;
    background: #2a2a2a;
    border: 1px solid #333;
    border-radius: 8px;
    color: #f0f0f0;
    font-size: 1.25rem;
    padding: 1rem;
    resize: none;
    outline: none;
}

textarea:focus {
    border-color: #555;
}

#output {
    margin-top: 1.5rem;
    background: #2a2a2a;
    border: 1px solid #333;
    border-radius: 8px;
    padding: 1rem;
    font-size: 2rem;
    min-height: 80px;
    line-height: 1.6;
}

.toolbar {
    margin-bottom: 1.5rem;
}

.toggle-btn {
    background: transparent;
    border: 1px solid #444;
    border-radius: 6px;
    color: #aaa;
    padding: 0.4rem 1rem;
    font-size: 0.9rem;
    cursor: pointer;
}

.toggle-btn:hover {
    background: #2a2a2a;
    color: #f0f0f0;
}

.toggle-btn.active {
    border-color: #888;
    color: #f0f0f0;
}

.copy-btn {
    margin-top: 1rem;
    background: transparent;
    border: 1px solid #444;
    border-radius: 6px;
    color: #aaa;
    padding: 0.5rem 1.25rem;
    font-size: 1rem;
    cursor: pointer;
}

.copy-btn:hover {
    background: #2a2a2a;
    color: #f0f0f0;
}

nav {
    margin-top: 3rem;
    border-top: 1px solid #333;
    padding-top: 1rem;
}

nav a {
    color: #aaa;
    text-decoration: none;
    font-size: 0.95rem;
}

nav a:hover {
    color: #f0f0f0;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1.1rem;
}

th {
    text-align: left;
    color: #888;
    font-weight: normal;
    padding: 0.5rem 1rem 0.5rem 0;
    border-bottom: 1px solid #333;
}

td {
    padding: 0.5rem 1rem 0.5rem 0;
    border-bottom: 1px solid #222;
}

td:last-child {
    font-size: 1.4rem;
}