/* ─────────────────────────────────────────────
   레이아웃
───────────────────────────────────────────── */
.auth-container {
  display: flex;
  min-height: calc(100vh);
  max-height: calc(250vh);
  padding-top: calc(var(--banner-h) + 8rem);
}

/* ─────────────────────────────────────────────
   왼쪽 패널 — 브랜드
───────────────────────────────────────────── */
.auth-panel--left {
  flex: 1;
  position: relative;
  background: #0a0a0a url('/portfolio/etc/etc-v1-light/images/login_signin.png') center / cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6.4rem;
}
.auth-panel--left::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(15, 15, 15, 0.1) 50%, rgba(0, 0, 0, 0.6) 100%);
  pointer-events: none;
}
.auth-brand {
  position: relative;
  z-index: 1;
}

.auth-brand {
  margin-top: 40rem;
  max-width: 60.8rem;
}
.auth-brand__sub {
  font-size: var(--text-xs);
  letter-spacing: var(--ls-widest);
  color: rgba(255, 255, 255, 0.45);
  text-transform: uppercase;
  margin-bottom: 2.4rem;
}
.auth-brand__name {
  font-size: var(--text-4xl);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wide);
  color: #fff;
  margin-bottom: 3.2rem;
  line-height: 1.1;
}
.auth-brand__desc {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.8;
  font-weight: var(--fw-light);
}

/* ─────────────────────────────────────────────
   오른쪽 패널 — 폼
───────────────────────────────────────────── */
.auth-panel--right {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6.4rem;
  background: var(--color-bg-primary);
}
.auth-form-wrap {
  width: 100%;
  max-width: 67.2rem;
}
.auth-title {
  font-size: var(--text-2xl);
  font-weight: var(--fw-bold);
  color: var(--color-red);
  margin-bottom: 7.2rem;
  letter-spacing: var(--ls-normal);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 2.9rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.9rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.form-label {
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wide);
  color: var(--color-red);
  text-transform: uppercase;
  margin: 0.8rem 0;
}
.form-input {
  width: 100%;
  padding: 1.6rem 2.2rem;
  border: 1px solid var(--color-border);
  background: transparent;
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  outline: none;
  transition: border-color 0.2s ease;
}
.form-input:focus {
  border-color: var(--color-red);
}
.form-input::placeholder {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: var(--fw-light);
}

/* 비밀번호 토글 */
.form-input-wrap {
  position: relative;
}
.form-input-wrap .form-input {
  padding-right: 6.4rem;
}
.form-eye {
  position: absolute;
  right: 1.9rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  padding: 0;
  transition: color 0.2s ease;
  opacity: 0.6;
}
.form-eye:hover {
  color: var(--color-red);
}

/* 에러 메시지 */
.form-error {
  font-size: var(--text-2xs);
  color: var(--color-red-bright);
  letter-spacing: var(--ls-normal);
  min-height: 2.4rem;
}

/* 약관 체크박스 */
.form-check {
  display: flex;
  align-items: center;
  gap: 1.3rem;
}
.form-checkbox {
  width: 2.1rem;
  height: 2.1rem;
  flex-shrink: 0;
  accent-color: var(--color-red);
  cursor: pointer;
}
.form-check-label {
  font-size: var(--text-xs);
  letter-spacing: var(--ls-normal);
  color: var(--color-text-muted);
  line-height: 1.6;
  cursor: pointer;
}
.form-link {
  transition: var(--transition);
}
.form-link:hover {
  color: var(--color-red);
}

/* 제출 버튼 */
.auth-btn {
  padding: 2.2rem;
  background: var(--color-red);
  color: #fff;
  border: none;
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  cursor: pointer;
  font-family: var(--font-body);
  transition: background 0.2s ease;
}
.auth-btn:hover {
  background: var(--color-red-dark);
}

/* 계정 전환 */
.auth-switch {
  margin-top: 4rem;
  text-align: center;
  letter-spacing: var(--ls-normal);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.auth-switch__link {
  color: var(--color-red);
  font-weight: var(--fw-medium);
  transition: var(--transition);
}
.auth-switch__link:hover {
  color: var(--color-red-dark);
}

/* ─────────────────────────────────────────────
   Tablet 768px
───────────────────────────────────────────── */
@media (max-width: 768px) {
  .auth-container {
    flex-direction: column;
    padding-top: calc(var(--banner-h) + 7rem);
  }
  .auth-panel--left {
    padding: 0 3.2rem 4.4rem 3.2rem;
    min-height: 28vh;
    justify-content: flex-start;
  }
  .auth-brand {
    margin-top: 30rem;
  }
  .auth-brand__sub {
    font-size: var(--text-2xs);
  }
  .auth-brand__name {
    font-size: var(--text-3xl);
  }
  .auth-brand__desc {
    font-size: var(--text-sm);
  }
  .auth-panel--right {
    padding: 4.8rem 3.2rem 6.4rem;
    align-items: flex-start;
  }
  .auth-title {
    font-size: var(--text-xl);
  }

}
/* ─────────────────────────────────────────────
   Mobile L 430px
───────────────────────────────────────────── */
@media (max-width: 430px) {
  .form-label {
    font-size: var(--text-2xs);
  }
  .form-input {
    font-size: var(--text-xs);
  }
  .form-input::placeholder {
    font-size: var(--text-2xs);
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .form-check-label {
  font-size: var(--text-2xs);
  }
}
/* ─────────────────────────────────────────────
   Mobile S 360px
───────────────────────────────────────────── */
@media (max-width: 360px) {
  .auth-brand {
    margin-top: 25rem;
  }
  .auth-brand__sub {
    font-size: 1rem;
  }
  .auth-brand__name {
    font-size: var(--text-2xl);
  }
  .auth-brand__desc {
    font-size: var(--text-xs);
  }
  .auth-title {
    font-size: var(--text-lg);
  }
}