:root {
    --bg-color: #101010;
    --card-bg: #1c1c1c;
    --accent-color: #df431e;
    --accent-hover: #c03a1a;
    --text-main: #fefefe;
    --text-muted: #909090;
    --border-color: #333333;
    --input-bg: #161616;
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.container {
    width: 100%;
    max-width: 50rem;
    background-color: var(--card-bg);
    border: 0.0625rem solid var(--border-color);
    border-radius: 1rem;
    padding: 2.5rem;
    box-shadow: 0 1rem 1.5rem -0.5rem rgba(0, 0, 0, 0.5);
}

.logo {
    display: block;
    width: 7rem;
    height: auto;
    margin: 0 auto 1.25rem;
}

h1 {
    font-size: 1.875rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
    text-align: center;
}

p.subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.translator-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1rem;
    align-items: center;
    margin-bottom: 2rem;
}

@media (min-width: 48rem) {
    .translator-grid {
        grid-template-columns: 1fr auto 1fr;
    }
}

.pane {
    display: flex;
    flex-direction: column;
}

label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

textarea {
    width: 100%;
    height: 9rem;
    background-color: var(--input-bg);
    border: 0.0625rem solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-main);
    padding: 0.875rem;
    font-size: 1rem;
    resize: vertical;
    font-family: inherit;
    transition: border-color 0.2s;
}

textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

textarea[readonly] {
    background-color: rgba(22, 22, 22, 0.6);
    cursor: default;
}

#reverse-btn {
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    border-radius: 50%;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    justify-self: center;
    flex-shrink: 0;
}

@media (max-width: 47.9375rem) {
button {
    background-color: var(--accent-color);
    color: var(--bg-color);
    font-weight: 600;
    border: none;
    border-radius: 0.5rem;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s, transform 0.1s;
}

button:hover {
    background-color: var(--accent-hover);
}

button:active {
    transform: scale(0.98);
}

#reverse-btn {
        transform: rotate(90deg);
    }
}

.stats {
    font-size: 0.875rem;
    color: var(--text-muted);
}