@font-face {
  font-family: "Pretendard";
  src: url("./fonts/pretendard/PretendardVariable.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --auth-primary: #1F5D8F;
  --auth-primary-strong: #17486F;
  --auth-ink: #18212C;
  --auth-secondary: #4B5A68;
  --auth-muted: #627181;
  --auth-border: #D9E1E7;
  --auth-bg: #F4F6F8;
  --auth-surface: #FFFFFF;
  --auth-soft: #EDF4F8;
  --auth-error: #9B4050;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  color-scheme: light;
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--auth-bg); }
body { min-height: 100dvh; margin: 0; background: var(--auth-bg); color: var(--auth-ink); font-family: inherit; font-size: 16px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.skip-link { position: fixed; z-index: 20; top: 8px; left: 8px; padding: 10px 14px; border-radius: 10px; background: var(--auth-ink); color: white; text-decoration: none; transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--auth-primary) 72%, transparent); outline-offset: 3px; }

.auth-layout { display: grid; min-height: 100dvh; grid-template-columns: minmax(320px, .82fr) minmax(420px, 1.18fr); }
.auth-intro { display: flex; min-height: 100%; flex-direction: column; justify-content: space-between; padding: calc(40px + var(--safe-top)) 52px calc(52px + var(--safe-bottom)); background: var(--auth-primary-strong); color: white; }
.auth-layout--admin .auth-intro { background: var(--auth-ink); }
.auth-brand { display: inline-flex; align-items: center; align-self: flex-start; gap: 12px; color: inherit; font-size: 18px; font-weight: 760; letter-spacing: -.025em; text-decoration: none; }
.auth-brand img { width: 44px; height: 44px; border-radius: 12px; background: white; }
.auth-intro__copy { max-width: 31rem; margin-top: 80px; }
.auth-intro__copy > p { margin: 0 0 12px; color: color-mix(in srgb, white 82%, transparent); font-size: 15px; font-weight: 650; }
.auth-intro__copy h1 { margin: 0; font-size: 42px; line-height: 1.2; font-weight: 760; letter-spacing: -.04em; text-wrap: balance; }
.auth-intro__copy ul { display: grid; gap: 10px; margin: 36px 0 0; padding: 0; list-style: none; }
.auth-intro__copy li { display: flex; align-items: center; gap: 10px; color: color-mix(in srgb, white 88%, transparent); }
.auth-intro__copy li::before { width: 6px; height: 6px; flex: 0 0 auto; border-radius: 50%; background: color-mix(in srgb, white 88%, transparent); content: ""; }

.auth-panel { display: flex; min-height: 100%; align-items: center; justify-content: center; padding: calc(48px + var(--safe-top)) max(32px, var(--safe-right)) calc(48px + var(--safe-bottom)) max(32px, var(--safe-left)); background: var(--auth-surface); }
.auth-panel__content { width: min(100%, 430px); }
.auth-heading h2 { margin: 0; font-size: 30px; line-height: 1.25; font-weight: 760; letter-spacing: -.04em; text-wrap: balance; }
.auth-heading p { max-width: 38ch; margin: 10px 0 0; color: var(--auth-secondary); font-size: 15px; line-height: 1.6; text-wrap: pretty; }
.auth-form { display: grid; margin-top: 36px; }
.auth-form label { margin-bottom: 8px; font-size: 14px; font-weight: 700; }
.auth-form input { width: 100%; min-height: 54px; padding: 14px 16px; border: 1px solid var(--auth-border); border-radius: 14px; background: var(--auth-surface); color: var(--auth-ink); font-size: 17px; transition: border-color 180ms ease, box-shadow 180ms ease; }
.auth-form input::placeholder { color: #687685; opacity: 1; }
.auth-form input:hover { border-color: #AAB9C5; }
.auth-form input:focus { border-color: var(--auth-primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--auth-primary) 14%, transparent); outline: none; }
.auth-form input[aria-invalid="true"] { border-color: var(--auth-error); }
.field-help { margin: 8px 0 0; color: var(--auth-muted); font-size: 13px; line-height: 1.55; text-wrap: pretty; }
.auth-submit { display: inline-flex; min-height: 54px; align-items: center; justify-content: center; gap: 10px; margin-top: 24px; padding: 14px 20px; border: 0; border-radius: 14px; background: var(--auth-primary); color: white; font-weight: 720; cursor: pointer; transition: background 180ms ease, transform 160ms ease; }
.auth-submit:hover { background: var(--auth-primary-strong); }
.auth-submit:active { transform: translateY(1px); }
.auth-submit:disabled { background: #71899B; cursor: wait; transform: none; }
.auth-submit__busy { width: 18px; height: 18px; border: 2px solid color-mix(in srgb, white 38%, transparent); border-top-color: white; border-radius: 50%; animation: auth-spin .75s linear infinite; }
.auth-status { min-height: 24px; margin: 10px 0 0; color: var(--auth-secondary); font-size: 14px; }
.auth-status[data-state="error"] { color: var(--auth-error); }
.auth-privacy { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--auth-border); }
.auth-privacy strong { font-size: 13px; }
.auth-privacy p { margin: 5px 0 0; color: var(--auth-muted); font-size: 12px; line-height: 1.6; text-wrap: pretty; }
.admin-entry { display: inline-flex; min-height: 44px; align-items: center; margin-top: 18px; color: var(--auth-primary-strong); font-size: 13px; font-weight: 680; text-decoration: none; }
.admin-entry:hover { text-decoration: underline; text-underline-offset: 3px; }

@keyframes auth-spin { to { transform: rotate(360deg); } }

@media (max-width: 760px) {
  .auth-layout { display: block; background: var(--auth-surface); }
  .auth-intro { min-height: auto; padding: calc(22px + var(--safe-top)) max(20px, var(--safe-right)) 28px max(20px, var(--safe-left)); }
  .auth-brand { font-size: 16px; }
  .auth-brand img { width: 38px; height: 38px; border-radius: 10px; }
  .auth-intro__copy { margin-top: 36px; }
  .auth-intro__copy > p { margin-bottom: 8px; font-size: 13px; }
  .auth-intro__copy h1 { font-size: 30px; line-height: 1.24; }
  .auth-intro__copy ul { display: none; }
  .auth-panel { min-height: auto; align-items: flex-start; padding: 34px max(20px, var(--safe-right)) calc(40px + var(--safe-bottom)) max(20px, var(--safe-left)); }
  .auth-panel__content { width: 100%; max-width: 460px; }
  .auth-heading h2 { font-size: 26px; }
  .auth-form { margin-top: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .auth-submit__busy { border-top-color: color-mix(in srgb, white 38%, transparent); }
}