/* GPT / OpenAI-like dark theme — palette copied from new-api theme.css .dark */
:root {
  --background: oklch(0.185 0 0);
  --foreground: oklch(0.965 0 0);
  --card: oklch(0.235 0 0);
  --card-foreground: oklch(0.965 0 0);
  --primary: oklch(0.965 0 0);
  --primary-foreground: oklch(0.145 0 0);
  --secondary: oklch(0.285 0 0);
  --muted: oklch(0.255 0 0);
  --muted-foreground: oklch(0.76 0 0);
  --accent: oklch(0.325 0 0);
  --border: oklch(1 0 0 / 12%);
  --input: oklch(1 0 0 / 16%);
  --ring: oklch(0.68 0 0);
  --destructive: oklch(0.704 0.191 22.216);
  --success: oklch(0.696 0.17 162.48);
  --warning: oklch(0.769 0.188 70.08);
  --info: oklch(0.68 0.17 237.323);
  --radius: 1rem;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--background);
  color: var(--foreground);
  font-family: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 460px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 30px;
  box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.6);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}
.brand .dot {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(145deg, oklch(0.7 0.17 162.48), oklch(0.68 0.17 237.323));
  flex: none;
}
.brand h1 { font-size: 17px; font-weight: 600; margin: 0; letter-spacing: .2px; }

.subtitle {
  color: var(--muted-foreground);
  font-size: 13.5px;
  line-height: 1.6;
  margin: 4px 0 24px;
}

label { display: block; font-size: 13px; color: var(--muted-foreground); margin: 16px 0 7px; }

input[type="text"], input[type="password"] {
  width: 100%;
  padding: 12px 14px;
  font-size: 14px;
  color: var(--foreground);
  background: var(--muted);
  border: 1px solid var(--input);
  border-radius: 12px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input::placeholder { color: oklch(0.6 0 0); }
input:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 3px oklch(0.68 0 0 / 18%);
}

.hint { font-size: 12px; color: oklch(0.6 0 0); margin-top: 6px; line-height: 1.5; }

button.primary {
  width: 100%;
  margin-top: 22px;
  padding: 12px 16px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--primary-foreground);
  background: var(--primary);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: opacity .15s, transform .05s;
}
button.primary:hover { opacity: .9; }
button.primary:active { transform: translateY(1px); }
button.primary:disabled { opacity: .5; cursor: not-allowed; }

.linkbtn {
  background: none; border: none; color: var(--muted-foreground);
  font-size: 12.5px; cursor: pointer; padding: 0;
}
.linkbtn:hover { color: var(--foreground); }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
}
.who { font-size: 13px; color: var(--muted-foreground); }
.who b { color: var(--foreground); font-weight: 600; }

.guide {
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  margin: 4px 0 20px;
  font-size: 12.8px;
  line-height: 1.75;
  color: var(--muted-foreground);
}
.guide h3 { margin: 0 0 8px; font-size: 13px; color: var(--foreground); font-weight: 600; }
.guide ol { margin: 0; padding-left: 18px; }
.guide code {
  background: var(--accent); padding: 1px 6px; border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px;
  color: var(--foreground); white-space: nowrap;
}

.result {
  margin-top: 20px;
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 13.5px;
  line-height: 1.65;
  display: none;
  border: 1px solid var(--border);
}
.result.show { display: block; }
.result .tag { font-weight: 600; display: block; margin-bottom: 4px; }
.result.ok    { background: oklch(0.696 0.17 162.48 / 12%); border-color: oklch(0.696 0.17 162.48 / 40%); }
.result.ok .tag { color: var(--success); }
.result.pending { background: oklch(0.769 0.188 70.08 / 12%); border-color: oklch(0.769 0.188 70.08 / 40%); }
.result.pending .tag { color: var(--warning); }
.result.err   { background: oklch(0.704 0.191 22.216 / 12%); border-color: oklch(0.704 0.191 22.216 / 40%); }
.result.err .tag { color: var(--destructive); }

.footer { margin-top: 22px; text-align: center; font-size: 11.5px; color: oklch(0.5 0 0); }
.hidden { display: none !important; }

/* tab bar */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px;
  margin: 18px 0 22px;
}
.tab {
  flex: 1;
  padding: 9px 8px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--muted-foreground);
  background: transparent;
  border: none;
  border-radius: 9px;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.tab:hover { color: var(--foreground); }
.tab.active {
  background: var(--accent);
  color: var(--foreground);
  font-weight: 600;
}

.pane { animation: fade .18s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(3px); } to { opacity: 1; transform: none; } }

/* credential box shown after account creation */
.creds {
  margin-top: 12px;
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 13px;
}
.creds .row { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; }
.creds .row span { color: var(--muted-foreground); }
.creds .row b {
  color: var(--foreground);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-weight: 600;
  word-break: break-all;
  text-align: right;
}
.creds .row a {
  color: var(--success);
  font-size: 12.5px;
  text-decoration: none;
  word-break: break-all;
  text-align: right;
}
.creds .row a:hover { text-decoration: underline; }
.creds .row em { color: var(--muted-foreground); font-style: normal; font-size: 12.5px; }

.copybtn {
  width: 100%;
  margin-top: 10px;
  padding: 9px 12px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--foreground);
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.copybtn:hover { background: var(--accent); border-color: var(--ring); }

.credstext {
  width: 100%;
  margin-top: 8px;
  padding: 10px 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  line-height: 1.6;
  color: var(--foreground);
  background: var(--muted);
  border: 1px solid var(--input);
  border-radius: 10px;
  resize: vertical;
}

.terms { margin-top: 10px; font-size: 12.5px; color: var(--muted-foreground); }
.terms summary {
  cursor: pointer; color: var(--foreground); font-weight: 600; font-size: 12.5px;
  list-style: none;
}
.terms summary::-webkit-details-marker { display: none; }
.terms summary::before { content: "▸ "; color: var(--muted-foreground); }
.terms[open] summary::before { content: "▾ "; }
.terms ul { margin: 8px 0 0; padding-left: 18px; line-height: 1.7; }

.hint code {
  background: var(--accent); padding: 0 4px; border-radius: 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.spinner {
  display: inline-block; width: 14px; height: 14px; vertical-align: -2px;
  border: 2px solid oklch(1 0 0 / 30%); border-top-color: var(--primary-foreground);
  border-radius: 50%; animation: spin .7s linear infinite; margin-right: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* keyboard focus rings (mouse clicks stay clean via :focus-visible) */
button.primary:focus-visible,
.tab:focus-visible,
.linkbtn:focus-visible,
a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px oklch(1 0 0 / 22%);
}
.linkbtn:focus-visible,
a:focus-visible { border-radius: 8px; }
input:focus-visible {
  border-color: var(--ring);
  box-shadow: 0 0 0 3px oklch(0.68 0 0 / 22%);
}

/* respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}