:root {
    --bg: #fafafa;
    --fg: #1a1a1a;
    --muted: #666;
    --border: #d8d8d8;
    --accent: #0066cc;
    --accent-fg: #ffffff;
    --error: #c0392b;
    --ok: #1f8a3a;
    --field-bg: #ffffff;
    --panel-bg: #f0f0f0;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1a1a1a;
        --fg: #eaeaea;
        --muted: #9a9a9a;
        --border: #333333;
        --accent: #4d9eff;
        --accent-fg: #0a0a0a;
        --error: #ff7e75;
        --ok: #6cd76c;
        --field-bg: #232323;
        --panel-bg: #262626;
    }
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

main {
    max-width: 960px;
    margin: 0 auto;
    padding: 32px 20px 64px;
}

header {
    margin-bottom: 28px;
}

h1 {
    margin: 0 0 8px;
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.tagline {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.tagline code,
.promo code {
    background: var(--panel-bg);
    padding: 1px 5px;
    border-radius: 3px;
    font-size: 0.9em;
}

.toolbar {
    margin-bottom: 12px;
}

.status {
    min-height: 1.4em;
    margin: 0 0 16px;
    font-size: 0.9rem;
    color: var(--muted);
}

.status[data-kind="ok"] {
    color: var(--ok);
}

.status[data-kind="error"] {
    color: var(--error);
}

.field-error {
    font-size: 0.85rem;
    color: var(--error);
    margin-top: 2px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field > label,
.field > .form-label {
    font-size: 0.9rem;
    font-weight: 500;
}

input[type="text"],
input[type="url"],
input[type="number"],
textarea {
    font: inherit;
    padding: 8px 10px;
    background: var(--field-bg);
    color: var(--fg);
    border: 1px solid var(--border);
    border-radius: 6px;
    outline: none;
}

input[type="text"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
textarea:focus {
    border-color: var(--accent);
}

input[type="number"] {
    max-width: 140px;
}

textarea {
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
    font-size: 0.85rem;
    line-height: 1.45;
    resize: vertical;
    min-height: 240px;
    white-space: pre;
    overflow-wrap: normal;
    overflow-x: auto;
}

.segmented {
    align-self: flex-start;
    display: inline-flex;
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    background: var(--field-bg);
}

.segmented-option {
    position: relative;
    cursor: pointer;
    user-select: none;
}

.segmented-option + .segmented-option {
    border-left: 1px solid var(--border);
}

.segmented-option > input {
    position: absolute;
    inset: 0;
    opacity: 0;
    margin: 0;
    cursor: pointer;
}

.segmented-option > span {
    display: block;
    padding: 7px 22px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--muted);
}

.segmented-option > input:checked + span {
    background: var(--accent);
    color: var(--accent-fg);
}

.segmented-option:hover > input:not(:checked) + span {
    background: var(--panel-bg);
    color: var(--fg);
}

.segmented-option > input:focus-visible + span {
    box-shadow: inset 0 0 0 2px var(--accent);
}

.checkbox {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    cursor: pointer;
    user-select: none;
}

.remote-fields {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 14px 16px;
    background: var(--panel-bg);
    border-radius: 6px;
}

button {
    font: inherit;
    font-weight: 500;
    padding: 9px 18px;
    background: var(--accent);
    color: var(--accent-fg);
    border: 0;
    border-radius: 6px;
    cursor: pointer;
}

button:hover {
    filter: brightness(1.08);
}

button:active {
    filter: brightness(0.95);
}

.actions {
    margin-top: 4px;
    display: flex;
    justify-content: flex-end;
}

.promo {
    margin-top: 48px;
    padding: 16px 20px;
    border: 1px solid var(--border);
    border-radius: 6px;
    text-align: center;
    font-size: 0.95rem;
}

.promo a {
    color: var(--accent);
    text-decoration: none;
}

.promo a:hover {
    text-decoration: underline;
}

footer {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 0.85rem;
}

footer a {
    color: var(--muted);
}

[hidden] {
    display: none !important;
}