:root {
  --accent: #b5121b;
  --accent-hover: #970e16;
  --accent-soft: #fbeaeb;
  --on-accent: #ffffff;
  --fg: #1b1b1f;
  --muted: #5f6368;
  --bg: #f5f5f7;
  --surface: #ffffff;
  --surface-2: #f0f0f3;
  --border: #dcdce2;
  --ok: #1b7a3a;
  --ok-soft: #e7f5ec;
  --danger: #b3261e;
  --danger-soft: #fcebe9;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.05), 0 6px 20px rgba(0, 0, 0, 0.06);
  --focus-ring: 0 0 0 3px color-mix(in srgb, var(--accent) 40%, transparent);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #e5484d;
    --accent-hover: #f0646a;
    --accent-soft: #3a1d20;
    --fg: #ececf0;
    --muted: #a1a1aa;
    --bg: #111113;
    --surface: #1b1b1e;
    --surface-2: #26262a;
    --border: #35353b;
    --ok: #4cc77a;
    --ok-soft: #16301f;
    --danger: #f27a72;
    --danger-soft: #3b1b19;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 6px 20px rgba(0, 0, 0, 0.3);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--fg);
  background: var(--bg);
}

h1, h2, h3 {
  line-height: 1.25;
}

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

button {
  font: inherit;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--fg);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

button:hover:not(:disabled) {
  background: var(--surface-2);
}

button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
}

button.primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

button.link {
  border: none;
  background: none;
  padding: 0.25rem;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

button.link:hover:not(:disabled) {
  background: none;
  color: var(--accent-hover);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

input:not([type="checkbox"], [type="radio"]),
select,
textarea {
  font: inherit;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.6rem;
  min-width: 0;
  max-width: 100%;
}

input[type="checkbox"],
input[type="radio"] {
  accent-color: var(--accent);
  width: 1.05rem;
  height: 1.05rem;
  margin: 0;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  border-color: var(--accent);
}

summary {
  cursor: pointer;
}

dialog {
  color: var(--fg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0;
  width: min(34rem, calc(100% - 2rem));
  max-height: calc(100% - 2rem);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.45);
}

.loading {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

.faq {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1rem 1rem;
}

footer {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1rem 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

footer div {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

footer a {
  color: inherit;
  line-height: 0;
}

footer svg {
  display: block;
}

.faq h2 {
  margin: 0 0 0.35rem;
  font-size: 1.35rem;
}

.faq > p:first-of-type {
  margin-top: 0;
  color: var(--muted);
}

.faq details {
  margin: 0.5rem 0;
  padding: 0.7rem 0.95rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.faq summary {
  font-weight: 600;
}

.faq details[open] summary {
  margin-bottom: 0.35rem;
}

.faq li {
  margin: 0.25rem 0;
}

.faq code {
  font-size: 0.92em;
}

.faq-table {
  overflow-x: auto;
  margin: 0.75rem 0;
}

.faq table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.faq caption {
  caption-side: bottom;
  padding-top: 0.4rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: left;
}

.faq th,
.faq td {
  padding: 0.45rem 0.55rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.faq th {
  font-weight: 600;
}

.faq-note {
  color: var(--muted);
  font-size: 0.9rem;
}