:root {
    color-scheme: light;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 32px 16px;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    line-height: 1.4;
    background: #f6f7f9;
    color: #111827;
}

.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 20px 16px;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    background: #ffffff;
}

h1 {
    margin: 0 0 16px;
    font-size: 20px;
    font-weight: 650;
    letter-spacing: 0.2px;
}

.text-entry,
textarea {
    width: min(520px, 100%);
    padding: 10px 12px;
    margin: 6px 8px;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    background: #ffffff;
    color: inherit;
    font: inherit;
    outline: none;
}

.text-entry:focus,
textarea:focus {
    border-color: #6b7280;
    box-shadow: 0 0 0 3px rgba(107, 114, 128, 0.25);
}

.button {
    padding: 10px 14px;
    margin: 6px 8px;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    background: #111827;
    color: #ffffff;
    font: inherit;
    cursor: pointer;
}

.button:hover {
    filter: brightness(1.05);
}

.button:active {
    transform: translateY(1px);
}

textarea {
    display: block;
    margin: 12px auto 0;
    resize: vertical;
    min-height: 140px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 13px;
}