/* 登录页：与主界面同一套中性色，不引入额外依赖 */
:root {
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 10px;
}
[data-theme="dark"] {
  color-scheme: dark;
  --canvas: #0b0b0c;
  --panel: #121213;
  --field: rgba(255, 255, 255, .045);
  --field-hover: rgba(255, 255, 255, .075);
  --line: rgba(255, 255, 255, .07);
  --line-2: rgba(255, 255, 255, .13);
  --text: #ececec;
  --text-2: #a3a3a3;
  --text-3: #7d7d7d;
  --primary: #ececec;
  --primary-text: #0b0b0c;
  --primary-hover: #fff;
  --focus: rgba(255, 255, 255, .55);
  --danger: #ef6461;
  --pop-shadow: 0 0 0 1px rgba(255, 255, 255, .06), 0 18px 48px rgba(0, 0, 0, .45);
}
[data-theme="light"] {
  color-scheme: light;
  --canvas: #f1f1ef;
  --panel: #fafaf9;
  --field: rgba(0, 0, 0, .04);
  --field-hover: rgba(0, 0, 0, .065);
  --line: rgba(0, 0, 0, .075);
  --line-2: rgba(0, 0, 0, .14);
  --text: #1b1b1b;
  --text-2: #545451;
  --text-3: #6f6f6b;
  --primary: #1b1b1b;
  --primary-text: #fafafa;
  --primary-hover: #000;
  --focus: rgba(0, 0, 0, .5);
  --danger: #d93f3c;
  --pop-shadow: 0 0 0 1px rgba(0, 0, 0, .06), 0 18px 48px rgba(0, 0, 0, .12);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  display: grid;
  place-items: center;
  padding: 24px;
  font-family: var(--font);
  font-size: 13px;
  line-height: 1.5;
  color: var(--text);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; color: inherit; }
.hide { display: none !important; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.card {
  width: min(380px, 100%);
  padding: 28px;
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--pop-shadow);
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--text-2);
}
h1 { margin-top: 22px; font-size: 20px; font-weight: 600; letter-spacing: -.01em; }
.desc { margin: 8px 0 20px; font-size: 12.5px; line-height: 1.7; color: var(--text-2); }
.desc code {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 11.5px;
  padding: 1px 5px;
  border-radius: 4px;
  background: var(--field);
}
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field > span { font-size: 12px; color: var(--text-2); }
.field small { font-size: 11.5px; color: var(--text-3); }
input {
  width: 100%;
  height: 38px;
  padding: 0 11px;
  border: 0;
  border-radius: var(--r-md);
  outline: 0;
  background: var(--field);
  font-size: 14px;
  transition: background .15s, box-shadow .15s;
}
input:focus { background: var(--field-hover); box-shadow: 0 0 0 1px var(--line-2); }
.primary {
  width: 100%;
  height: 40px;
  margin-top: 6px;
  border: 0;
  border-radius: var(--r-md);
  background: var(--primary);
  color: var(--primary-text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s, opacity .15s;
}
.primary:hover:not(:disabled) { background: var(--primary-hover); }
.primary:disabled { opacity: .55; cursor: default; }
.error {
  margin: 0 0 10px;
  padding: 8px 11px;
  border-left: 2px solid var(--danger);
  border-radius: var(--r-sm);
  background: var(--field);
  color: var(--danger);
  font-size: 12.5px;
  line-height: 1.6;
  word-break: break-word;
}
.state { padding: 24px 0 8px; font-size: 13px; color: var(--text-2); }
.note { margin-top: 14px; font-size: 11.5px; line-height: 1.7; color: var(--text-3); }
.note code {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 11px;
  padding: 1px 4px;
  border-radius: 4px;
  background: var(--field);
}
#setupToken { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }
.foot { margin-top: 22px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 11.5px; line-height: 1.7; color: var(--text-3); }

@media (max-width: 420px) {
  body { padding: 0; align-items: start; }
  .card { width: 100%; min-height: 100dvh; border-radius: 0; padding: 36px 24px; }
}