:root {
  color-scheme: light dark;
  --background: #ffffff; --card: #ffffff; --muted: #f5f5f5; --foreground: #0a0a0a;
  --muted-foreground: #737373; --primary: #171717; --primary-foreground: #fafafa;
  --border: #e5e5e5; --separator: #d7d7d7; --input: #e5e5e5; --destructive: #e7000b;
  --link: #005d95; --link-hover: #003e63; --brand-icon: #007cc7; --focus-ring: #007cc7;
  --danger-border: #ffc9c9; --danger-bg: #fef2f2; --danger-text: #9f0712;
  --success-border: #b9f8cf; --success-bg: #f0fdf4; --success-text: #016630;
  --info-border: #99dbff; --info-bg: #f3faff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --background: #0a0a0a; --card: #171717; --muted: #262626; --foreground: #fafafa;
    --muted-foreground: #a1a1a1; --primary: #e5e5e5; --primary-foreground: #171717;
    --border: rgba(255,255,255,.10); --separator: rgba(255,255,255,.15); --input: rgba(255,255,255,.15);
    --destructive: #ff6467; --link: #33b7ff; --link-hover: #66c9ff; --brand-icon: #33b7ff; --focus-ring: #33b7ff;
    --danger-border: rgba(159,7,18,.5); --danger-bg: rgba(70,8,9,.3); --danger-text: #ffa2a2;
    --success-border: rgba(1,102,48,.5); --success-bg: rgba(3,46,21,.3); --success-text: #7bf1a8;
    --info-border: rgba(0,62,99,.6); --info-bg: rgba(0,15,25,.3);
  }
  .button-destructive { background: rgba(255,100,103,.6); }
}
*, *::before, *::after { box-sizing: border-box; border-radius: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh; background: var(--background); color: var(--foreground);
  font-family: Geist, GeistSansFallback, ui-sans-serif, system-ui, sans-serif;
  font-size: 14px; line-height: 20px; -webkit-font-smoothing: antialiased;
}
.skip-link { position: absolute; left: -9999px; top: 8px; padding: 8px 12px; background: var(--card); border: 1px solid var(--border); }
.skip-link:focus-visible { left: 8px; }
header.shell { height: 64px; display: flex; align-items: center; padding: 0 16px; border-bottom: 1px solid var(--separator); }
.wordmark { font-weight: 700; letter-spacing: -0.025em; font-size: 16px; color: var(--link); text-decoration: none; }
main { display: flex; justify-content: center; padding: 32px 16px 64px; }
.panel { width: 100%; max-width: 400px; background: var(--card); border: 1px solid var(--border); box-shadow: 0 1px 2px rgba(0,0,0,.05); padding: 24px; }
h1 { font-size: 24px; line-height: 32px; font-weight: 700; letter-spacing: -0.025em; margin: 0 0 8px; }
.lead { color: var(--muted-foreground); margin: 0 0 24px; }
form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
label { font-weight: 500; }
.hint { font-size: 12px; line-height: 16px; color: var(--muted-foreground); }
input[type=email], input[type=password], input[type=text] {
  height: 36px; width: 100%; padding: 4px 12px; font: inherit; font-size: 16px; color: var(--foreground);
  background: transparent; border: 1px solid var(--input); box-shadow: 0 1px 2px rgba(0,0,0,.05);
}
@media (min-width: 768px) { input[type=email], input[type=password], input[type=text] { font-size: 14px; } }
input[aria-invalid=true] { border-color: var(--destructive); }
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 36px; padding: 0 16px;
  font: inherit; font-weight: 500; cursor: pointer; border: 1px solid transparent; text-decoration: none;
  transition: background-color 150ms ease, color 150ms ease;
}
.button-primary { background: var(--primary); color: var(--primary-foreground); }
.button-primary:hover { opacity: .9; }
.button-outline { background: var(--background); color: var(--foreground); border-color: var(--border); }
.button-outline:hover { background: var(--muted); }
.button[disabled] { opacity: .5; cursor: not-allowed; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.actions .button { flex: 1 1 auto; }
a { color: var(--link); }
a:hover { color: var(--link-hover); }
:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
.meta { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--muted-foreground); }
.notice { padding: 12px; border: 1px solid; margin: 0 0 16px; }
.notice[hidden] { display: none; }
.notice-danger { border-color: var(--danger-border); background: var(--danger-bg); color: var(--danger-text); }
.notice-success { border-color: var(--success-border); background: var(--success-bg); color: var(--success-text); }
.notice-info { border-color: var(--info-border); background: var(--info-bg); }
.stack { width: 100%; max-width: 640px; display: flex; flex-direction: column; gap: 24px; }
.panel-wide { max-width: 640px; }
h2 { font-size: 18px; line-height: 28px; font-weight: 600; margin: 0 0 16px; }
.badge { display: inline-block; padding: 2px 8px; font-size: 12px; line-height: 16px; font-weight: 500; border: 1px solid var(--border); color: var(--muted-foreground); vertical-align: middle; }
.rows { list-style: none; margin: 0 0 16px; padding: 0; border: 1px solid var(--border); }
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px; border-top: 1px solid var(--border); }
.row:first-child { border-top: 0; }
.row .hint { display: block; margin-top: 2px; }
.button-sm { height: 32px; padding: 0 12px; }
.button-destructive { background: var(--destructive); color: #ffffff; }
.button-destructive:hover { opacity: .9; }
.actions form { display: contents; }
.shell-footer { display: flex; justify-content: center; gap: 16px; padding: 24px 16px 40px; border-top: 1px solid var(--separator); font-size: 12px; line-height: 16px; }
.shell-footer a { color: var(--muted-foreground); padding: 4px; }
.shell-footer a:hover { color: var(--foreground); }
.prose { max-width: 72ch; line-height: 22.75px; }
.prose h2 { margin: 24px 0 8px; }
.prose p, .prose ul { margin: 0 0 12px; }
.prose ul { padding-left: 20px; }
.prose li { margin: 4px 0; }
.scopes { list-style: none; margin: 0 0 24px; padding: 0; border: 1px solid var(--border); }
.scopes li { padding: 12px; border-top: 1px solid var(--border); }
.scopes li:first-child { border-top: 0; }
.scopes strong { display: block; font-weight: 500; }
.client { display: flex; gap: 12px; align-items: center; margin: 0 0 16px; }
.client-mark { width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; background: var(--muted); font-weight: 700; color: var(--brand-icon); }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }