/* CUDO SSO 인증 화면 공통 스타일 — 콘솔 재디자인 토큰 공유 (Handoff §2). */
:root {
  --base: #06070a;
  --panel: #0d1017;
  --surface: #12161f;
  --line: #212836;
  --ink: #e6eaf2;
  --ink2: #98a2b3;
  --ink3: #5a6675;
  --accent: #2563eb;
  --accent-bright: #3b82f6;
  --ok: #34d399;
  --danger: #f87171;
  color-scheme: dark;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Geist", "Apple SD Gothic Neo", "Noto Sans KR", system-ui, -apple-system, sans-serif;
  background: radial-gradient(120% 90% at 50% 0%, #101623 0%, #06070a 70%);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-font-smoothing: antialiased;
}
.card {
  width: 100%;
  max-width: 360px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  padding: 26px;
  margin: 16px;
}
.brand { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }
.brand .sq {
  width: 26px; height: 26px; border-radius: 7px; background: var(--accent-bright);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: #fff;
}
.brand h1 { font-size: 19px; font-weight: 600; letter-spacing: -0.02em; color: var(--ink); }
.brand .sub { font-size: 12.5px; color: var(--ink2); line-height: 1.5; }
.alert { border-radius: 8px; padding: 9px 11px; font-size: 12.5px; margin-bottom: 14px; line-height: 1.5; }
.alert.error { background: rgba(248, 113, 113, 0.08); color: #fca5a5; border: 1px solid rgba(248, 113, 113, 0.25); }
.alert.info { background: rgba(59, 130, 246, 0.08); color: #93c5fd; border: 1px solid rgba(59, 130, 246, 0.25); }
label { display: block; font-size: 11.5px; color: var(--ink2); margin: 14px 0 5px; font-weight: 500; }
input {
  width: 100%; height: 38px; padding: 0 11px;
  border: 1px solid var(--line); border-radius: 8px;
  font-size: 13.5px; background: var(--surface); color: var(--ink);
}
input::placeholder { color: var(--ink3); }
input:focus { outline: none; border-color: var(--accent-bright); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15); }
button.primary, a.primary {
  display: flex; align-items: center; justify-content: center;
  width: 100%; margin-top: 20px; height: 40px;
  background: var(--accent); color: #fff; font-size: 13.5px; font-weight: 600;
  border: none; border-radius: 8px; cursor: pointer; text-decoration: none;
}
button.primary:hover, a.primary:hover { background: #1d4ed8; }
.muted-link {
  display: block; text-align: center; margin-top: 16px;
  font-size: 12px; color: var(--ink3); text-decoration: none; font-weight: 500;
  background: none; border: none; width: 100%; cursor: pointer;
}
.muted-link:hover { color: var(--ink2); text-decoration: underline; }
.hint { font-size: 11px; color: var(--ink3); line-height: 1.5; margin-top: 12px; }
.mono { font-family: "Geist Mono", ui-monospace, monospace; }