:root {
  --bg: #fafafa;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --card: #ffffff;
  --accent: #2563eb;
  --accent-fg: #ffffff;
  --danger: #dc2626;
  --danger-fg: #ffffff;
  --flash: #ecfdf5;
  --flash-fg: #065f46;
  --error: #fef2f2;
  --error-fg: #991b1b;
  --code-bg: #f3f4f6;
}

* { box-sizing: border-box; }

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  font-weight: 600;
  color: var(--fg);
  font-size: 17px;
}
.nav {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav form { margin: 0; display: inline; }
.linkish {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent);
  cursor: pointer;
  font: inherit;
}
.linkish:hover { text-decoration: underline; }

.page {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}

h2 { margin-top: 28px; }
h3 { margin-top: 0; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 18px;
}
.card-narrow {
  max-width: 420px;
  margin: 64px auto;
}

.stack { display: flex; flex-direction: column; gap: 12px; }
.stack label { display: flex; flex-direction: column; gap: 4px; font-weight: 500; }

input[type=text], input[type=password], input[type=file], select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
  background: #fff;
}

button {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  font: inherit;
}
button.primary {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}
button.danger {
  background: var(--danger);
  color: var(--danger-fg);
  border-color: var(--danger);
}
button.small { padding: 4px 8px; font-size: 13px; }
button:hover:not([disabled]) { filter: brightness(0.95); }

.btn {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--fg);
}
.btn.primary {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}
.btn.primary:hover { text-decoration: none; filter: brightness(0.95); }

.muted { color: var(--muted); }
.small { font-size: 13px; }

.error, .flash {
  padding: 10px 14px;
  border-radius: 6px;
  margin: 10px 0;
}
.error { background: var(--error); color: var(--error-fg); border: 1px solid #fecaca; }
.flash { background: var(--flash); color: var(--flash-fg); border: 1px solid #a7f3d0; }

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.version-list {
  list-style: none;
  padding: 0;
  margin: 14px 0 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.version-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 0;
  border-top: 1px solid var(--border);
}

.changelog { padding: 16px 20px; }
.changelog-file {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 6px;
}

/* --- Sidebars (shared: .sidebar.left / .sidebar.right) --- */
.sidebar-toggle {
  position: fixed;
  bottom: 24px;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--accent-fg);
  border: none;
  padding: 11px 18px;
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
  cursor: pointer;
  font: inherit;
  font-weight: 500;
  transition: transform 0.15s, box-shadow 0.15s;
}
.sidebar-toggle:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.45);
}
.sidebar-toggle.right { right: 20px; }
.sidebar-toggle.left { left: 20px; }
.sidebar-toggle-icon { font-size: 16px; line-height: 1; }

#sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 40;
}
#sidebar-backdrop.show { opacity: 1; pointer-events: auto; }

.sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  width: min(720px, 92vw);
  background: #fff;
  transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  z-index: 50;
  display: flex;
  flex-direction: column;
}
.sidebar.right {
  right: 0;
  transform: translateX(100%);
  box-shadow: -8px 0 24px rgba(0, 0, 0, 0.18);
}
.sidebar.left {
  left: 0;
  transform: translateX(-100%);
  box-shadow: 8px 0 24px rgba(0, 0, 0, 0.18);
}
.sidebar.open { transform: translateX(0); }

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  padding: 10px 14px;
  background: #fafafa;
  flex-wrap: wrap;
}
.sidebar-title {
  flex: 1;
  font-weight: 600;
  font-size: 15px;
  min-width: 0;
}
.sidebar-close {
  background: none;
  border: none;
  font-size: 24px;
  line-height: 1;
  padding: 2px 10px;
  cursor: pointer;
  color: var(--muted);
  border-radius: 6px;
  order: 99;
}
.sidebar-close:hover { color: var(--fg); background: rgba(0, 0, 0, 0.04); }

.sidebar-body {
  flex: 1;
  overflow-y: auto;
}

/* Tabs (used inside the right docs sidebar) */
.docs-tabs {
  display: flex;
  gap: 4px;
  flex: 1;
  flex-wrap: wrap;
  min-width: 0;
}
.docs-tab {
  background: none;
  border: 1px solid transparent;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  color: var(--muted);
  font-weight: 500;
}
.docs-tab:hover { color: var(--fg); }
.docs-tab.active {
  background: #fff;
  color: var(--accent);
  border-color: var(--border);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.docs-panel {
  display: none;
  padding: 0 26px 40px;
}
.docs-panel.active { display: block; }

.docs-panel-toolbar {
  position: sticky;
  top: 0;
  background: #fff;
  padding: 14px 0 10px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  z-index: 1;
}

.api-doc { padding: 20px 26px 40px; }
.api-doc table { width: 100%; border-collapse: collapse; margin: 10px 0; }
.api-doc th, .api-doc td {
  border: 1px solid var(--border);
  padding: 6px 10px;
  text-align: left;
  font-size: 13px;
  vertical-align: top;
}
.api-doc th { background: #fafafa; font-weight: 600; }
.api-doc blockquote {
  border-left: 3px solid var(--accent);
  background: #f5f8ff;
  margin: 10px 0;
  padding: 8px 12px;
  color: var(--muted);
  border-radius: 0 4px 4px 0;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--fg);
  font-size: 13px;
  text-decoration: none;
}
.btn-download:hover {
  background: var(--code-bg);
  text-decoration: none;
}
.btn-download code {
  background: none;
  padding: 0;
  font-size: 0.92em;
  color: var(--accent);
}

body.no-scroll { overflow: hidden; }

@media (max-width: 640px) {
  .sidebar-toggle { bottom: 16px; padding: 10px 14px; }
  .sidebar-toggle.right { right: 14px; }
  .sidebar-toggle.left { left: 14px; }
  .docs-panel { padding: 16px 18px 32px; }
  .api-doc { padding: 16px 18px 32px; }
}

.markdown h1, .markdown h2 { margin-top: 6px; }
.markdown code {
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.9em;
}
.markdown pre {
  background: var(--code-bg);
  padding: 12px;
  border-radius: 6px;
  overflow-x: auto;
}
.markdown pre code { background: none; padding: 0; }

table.data {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 16px;
}
table.data th, table.data td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
table.data th {
  font-weight: 600;
  font-size: 13px;
  color: var(--muted);
  background: #fafafa;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
}