:root {
    color-scheme: light;
    --bg: #f7f7f5;
    --fg: #1c1c1c;
    --muted: #555;
    --border: #ccc;
    --accent: #0b5fff;
    --danger: #b00020;
    --panel: #fff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, sans-serif;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.45;
}

.page {
    max-width: 880px;
    margin: 0 auto;
    padding: 1.5rem;
}

.header h1 {
    margin: 0 0 0.35rem;
    font-size: 1.75rem;
}

.subtitle {
    margin: 0 0 0.75rem;
    color: var(--muted);
}

.section {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 1rem 1.1rem;
    margin: 1rem 0;
}

.section h2 {
    margin-top: 0;
    font-size: 1.2rem;
}

.section h3 {
    margin-bottom: 0.35rem;
    font-size: 1rem;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.form {
    display: grid;
    gap: 0.75rem;
    max-width: 28rem;
}

label {
    display: grid;
    gap: 0.3rem;
    font-size: 0.95rem;
}

input {
    font: inherit;
    padding: 0.4rem 0.5rem;
    border: 1px solid var(--border);
}

button {
    font: inherit;
    padding: 0.45rem 0.8rem;
    border: 1px solid var(--border);
    background: #eee;
    cursor: pointer;
}

button:hover {
    background: #e4e4e4;
}

button.danger {
    color: var(--danger);
    border-color: #e0a0aa;
}

a {
    color: var(--accent);
}

.message {
    min-height: 1.25rem;
    color: var(--muted);
}

.message--error {
    color: var(--danger);
}

.preview,
pre {
    background: #f0f0ee;
    border: 1px solid var(--border);
    padding: 0.75rem;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.9rem;
}

ul {
    padding-left: 1.2rem;
}