.lg-root {
  min-height: 100dvh;
  width: auto;
  max-width: 100%;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 500px);
  color: var(--auth-hero-text);
  overflow-x: hidden;
  overflow-y: auto;
}

.lg-root::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--auth-room-shade);
  pointer-events: none;
}

.lg-brand,
.lg-enter {
  position: relative;
  z-index: 1;
}

.lg-brand {
  min-width: 0;
  width: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--sp-7);
  padding: var(--sp-7);
  background: transparent;
  color: var(--auth-hero-text);
  overflow: hidden;
}

.lg-brand::after {
  display: none;
}

.lg-wordmark {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--auth-hero-text);
}

.lg-mark {
  display: grid;
  place-items: center;
  color: var(--accent-bright);
}

.lg-copy {
  max-width: 620px;
}

.lg-copy,
.lg-policy {
  position: relative;
  z-index: 1;
}

.lg-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
  /* --accent-bright 는 dot/진행바 fill 용 밝은 값이라 12px 글자로 쓰면 3.29:1 이다. */
  color: var(--text-accent);
}

.lg-kicker .d {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.lg-highlight {
  display: inline-block;
  position: relative;
  z-index: 0;
  padding: 0 4px;
  background: linear-gradient(90deg, var(--accent-deep), var(--accent-bright));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.lg-copy h1 {
  margin: var(--sp-4) 0 0;
  max-width: 640px;
  font-size: 56px;
  line-height: 1.12;
  letter-spacing: 0;
  font-weight: 760;
}

.lg-copy p {
  margin: var(--sp-5) 0 0;
  max-width: 560px;
  color: var(--auth-hero-muted);
  font-size: 17px;
  line-height: 1.75;
}

.lg-policy {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  width: max-content;
  max-width: min(430px, 100%);
  padding: 14px 16px;
  border: 1px solid var(--auth-hero-border);
  border-radius: var(--radius-lg);
  background: var(--auth-hero-surface);
  backdrop-filter: blur(18px) saturate(1.08);
  -webkit-backdrop-filter: blur(18px) saturate(1.08);
  color: var(--auth-hero-muted);
  font-size: 13px;
}

.lg-policy span,
.lg-policy b {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.lg-policy b {
  color: var(--auth-hero-text);
  background: var(--auth-hero-chip);
  border: 1px solid var(--auth-hero-border);
  border-radius: 999px;
  padding: 5px 10px;
  font-weight: 650;
}

.lg-enter {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-6);
  background: transparent;
}

.lg-panel {
  width: 100%;
  max-width: 430px;
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  color: var(--text-strong);
}

.lg-panel h2 {
  margin: var(--sp-3) 0 0;
  font-size: 28px;
  line-height: 1.25;
  letter-spacing: 0;
  color: var(--text-strong);
}

.lg-lead {
  margin: 10px 0 0;
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.65;
}

.lg-actions {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-top: var(--sp-6);
}

.lg-obtn {
  width: 100%;
  min-height: 58px;
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) 18px;
  align-items: center;
  gap: 13px;
  border-radius: var(--radius);
  padding: 11px 14px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 650;
  text-align: left;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-spring), background var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}

.lg-obtn:active {
  transform: translateY(1px) scale(0.98);
}

.lg-obtn.primary {
  background: color-mix(in srgb, var(--accent-tint) 72%, var(--glass-surface-inset));
  border-color: color-mix(in srgb, var(--accent) 44%, var(--glass-inset-border));
  color: var(--text-strong);
}

.lg-obtn.primary:hover {
  background: color-mix(in srgb, var(--accent-tint) 88%, var(--glass-surface-inset));
  border-color: var(--accent);
}

.lg-obtn.secondary {
  color: var(--text-strong);
}

.lg-obtn.secondary:hover {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--glass-inset-border));
}

.lg-obtn:disabled {
  cursor: not-allowed;
  opacity: 1;
  background: var(--glass-surface-inset);
  border-color: var(--glass-inset-border);
  color: var(--text-muted);
}

.lg-obtn:disabled:hover {
  background: var(--glass-surface-inset);
  border-color: var(--glass-inset-border);
}

.lg-obtn:disabled .ic {
  background: var(--bg-surface-2);
  color: var(--text-muted);
}

.lg-obtn:disabled .sub {
  color: var(--text-muted);
}

.lg-obtn .ic {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--accent-tint);
  color: var(--accent-deep);
}

.lg-obtn.secondary .ic {
  background: var(--bg-surface-2);
}

.lg-obtn .txt {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.lg-obtn .sub {
  font-size: 12px;
  font-weight: 550;
  color: var(--text-muted);
}

.lg-obtn.primary .sub {
  color: var(--text-body);
}

.lg-config {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: var(--sp-3);
  padding: 10px 12px;
  border-radius: var(--radius);
  /* 2026-07-27: 기존 하드코딩 다크 전제 색상 대신
     라이트/다크 테마별로 스왑되는 warn 의미 토큰으로 교체한다. */
  background: var(--warn-tint);
  border: 1px solid color-mix(in srgb, var(--warn-solid) 34%, transparent);
  color: var(--warn-text);
  font-size: 12.5px;
  line-height: 1.5;
}

.lg-dev {
  margin-top: var(--sp-6);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--glass-inset-border);
}

.lg-devhead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-3);
  color: var(--text-strong);
  font-size: 13px;
  font-weight: 700;
}

.lg-devhead small {
  color: var(--text-muted);
  font-weight: 600;
}

.lg-rolepick {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-2);
  margin-top: var(--sp-3);
}

.lg-roleopt {
  min-height: 50px;
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr) 16px;
  align-items: center;
  gap: 10px;
  padding: 9px 11px;
  border-radius: var(--radius);
  color: var(--text-strong);
  text-align: left;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-spring), background var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}

.lg-roleopt:active {
  transform: translateY(1px) scale(0.98);
}

.lg-roleopt.is-sel {
  border-color: color-mix(in srgb, var(--accent) 58%, var(--glass-inset-border));
  background: color-mix(in srgb, var(--accent-tint) 64%, var(--glass-surface-inset));
}

.lg-roleopt .d {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.lg-roleopt .d.learner {
  background: var(--accent-bright);
}

.lg-roleopt .d.teacher {
  background: var(--info-solid);
}

.lg-roleopt .d.admin {
  background: var(--neutral-500);
}

.lg-roleopt b {
  display: block;
  font-size: 13px;
}

.lg-roleopt small {
  display: block;
  margin-top: 1px;
  color: var(--text-muted);
  font-size: 12px;
}

.lg-devbtn {
  width: 100%;
  min-height: 46px;
  margin-top: var(--sp-3);
  border: 1px solid color-mix(in srgb, var(--accent) 58%, transparent);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent-tint) 60%, transparent);
  color: var(--accent-deep);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 750;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-spring), background var(--dur-base) var(--ease-out);
}

.lg-devbtn:active {
  transform: translateY(1px) scale(0.98);
}

.lg-devbtn:disabled {
  opacity: 0.62;
  cursor: wait;
}

.lg-error {
  margin: var(--sp-3) 0 0;
  color: var(--crit-text);
  background: var(--crit-tint);
  border: 1px solid color-mix(in srgb, var(--crit-solid) 30%, transparent);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.5;
}

.lg-error small {
  display: block;
  margin-top: 4px;
  color: var(--text-muted);
  font-family: var(--font-num);
  font-size: 11.5px;
  overflow-wrap: anywhere;
}

.lg-note {
  margin: var(--sp-5) 0 0;
  color: var(--text-muted);
  font-size: 12.5px;
  line-height: 1.6;
}

@media (max-width: 880px) {
  .lg-root {
    grid-template-columns: 1fr;
  }

  .lg-root::before {
    display: none;
  }

  .lg-brand {
    padding: var(--sp-6) var(--sp-5);
    gap: var(--sp-6);
  }

  .lg-brand::after {
    display: none;
  }

  .lg-copy h1 {
    font-size: 36px;
  }

  .lg-enter {
    padding: var(--sp-5);
  }

  .lg-panel {
    max-width: 560px;
  }
}

@media (max-width: 480px) {
  .lg-brand {
    padding: var(--sp-5);
  }

  .lg-copy h1 {
    font-size: 30px;
  }

  .lg-copy p {
    font-size: 15px;
  }

  .lg-enter {
    padding: var(--sp-4);
  }

  .lg-panel {
    padding: var(--sp-5);
  }
}