:root {
    --bg: #f7f6f2;
    --surface: #fff;
    --border: #d9d3c4;
    --text: #222;
    --muted: #6a6558;
    --accent: #3a6ea5;
    --accent-contrast: #fff;
    --warning-bg: #fff4e0;
    --warning-border: #e0b060;
    --error-bg: #fde7e7;
    --error-border: #d27676;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.4;
}

main {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.25rem;
}

h1 {
    margin: 0 0 0.5rem;
    font-size: 1.25rem;
}

.workspace-header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.workspace-header hr {
    inline-size: 100%;
    margin-block: 0;
    border: 0;
    border-block-start: 1px solid var(--border);
}

.meta {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 0.25rem 1rem;
    margin: 0;
    font-size: 0.9rem;
}
.meta dt { color: var(--muted); }
.meta dd { margin: 0; word-break: break-all; }

.form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.form label,
.controls label {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.9rem;
    color: var(--muted);
}

input[type="text"],
select,
textarea {
    font: inherit;
    color: var(--text);
    padding: 0.5rem 0.6rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: #fff;
    width: 100%;
}

textarea {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.85rem;
    resize: vertical;
}

button {
    font: inherit;
    padding: 0.55rem 1rem;
    border: 1px solid var(--accent);
    background: var(--accent);
    color: var(--accent-contrast);
    border-radius: 4px;
    cursor: pointer;
}
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
button:hover:not(:disabled) { filter: brightness(1.05); }

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.controls {
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
    flex-wrap: wrap;
    margin: 0.75rem 0;
}

.output-label {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--muted);
}

.warning {
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
    border-radius: 4px;
    padding: 0.6rem 0.75rem;
    font-size: 0.85rem;
    margin: 0.75rem 0;
}

.status {
    padding: 0.75rem;
    color: var(--muted);
}
.status.error {
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    border-radius: 4px;
    color: #7a2020;
}

.feedback {
    font-size: 0.85rem;
    color: var(--muted);
}

.tool-header {
    text-align: center;
}

.fallback {
    margin-top: 1rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.5rem 0.75rem;
    background: var(--surface);
}
.fallback summary {
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--muted);
    padding: 0.25rem 0;
}
.fallback summary:hover,
.fallback summary:focus-visible { color: var(--text); }
.fallback .hint {
    margin: 0.5rem 0;
    font-size: 0.85rem;
    color: var(--muted);
}
.fallback textarea { margin-top: 0.25rem; }