/* ============================================================
   IACUC 인증 카드 공용 스타일 (auth-card.css)
   - 사용: Landing 로그인 카드 / Identity Login / Register / ForgotPassword
   - 일관된 블루 그라데이션 헤더 + Primary 버튼 디자인
   ============================================================ */

:root {
    --auth-primary:       #1e3a8a;
    --auth-primary-dark:  #1e40af;
    --auth-accent:        #3b82f6;
    --auth-accent-light:  #dbeafe;
    --auth-gray-50:       #f9fafb;
    --auth-gray-100:      #f3f4f6;
    --auth-gray-200:      #e5e7eb;
    --auth-gray-300:      #d1d5db;
    --auth-gray-600:      #4b5563;
    --auth-gray-800:      #1f2937;
}

/* ============== 페이지 배경·중앙 정렬 컨테이너 ============== */
/* body 까지 그라데이션 확장 — iacuc-theme.css 의 body { background: #fff !important } 오버라이드.
   auth-card.css 는 Identity 인증 페이지에서만 로드되므로 다른 페이지에는 영향 없음. */
body {
    background: linear-gradient(135deg, #eff6ff 0%, #f0f9ff 100%) !important;
}
.auth-page {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 1.5rem 1rem 2rem;
    background: transparent;
}

/* ============== 카드 외곽 ============== */
.auth-card {
    background: #fff;
    border-radius: 0.75rem;
    box-shadow: 0 4px 16px rgba(30, 58, 138, 0.12);
    overflow: hidden;
    width: 100%;
    max-width: 440px;
}

/* ============== 헤더 (블루 그라데이션 띠) ============== */
.auth-card-header {
    height: 90px;
    background: linear-gradient(135deg, var(--auth-primary) 0%, var(--auth-accent) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    position: relative;
    padding: 0 1rem;
    text-align: center;
}
.auth-card-header i {
    font-size: 1.3rem;
    margin-bottom: 0.2rem;
    opacity: 0.95;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}
.auth-card-header h4 {
    color: #fff;
    font-weight: 700;
    margin: 0 0 0.15rem;
    font-size: 1.15rem;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}
.auth-card-header .sub {
    color: rgba(255, 255, 255, 0.92);
    font-size: 0.78rem;
    margin: 0;
    line-height: 1.4;
}

/* ============== 본문 영역 ============== */
.auth-card-body {
    padding: 1.75rem 2rem 2rem;
}
.auth-card-body .form-control {
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--auth-gray-300);
    border-radius: 0.375rem;
}
.auth-card-body .form-control:focus {
    border-color: var(--auth-accent);
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.15);
}
.auth-card-body .form-label {
    color: var(--auth-gray-800);
    font-weight: 500;
}

/* ============== Primary 버튼 (Login·재설정 링크 받기·회원가입 요청 등 주 액션) ============== */
.auth-btn-primary {
    display: block;
    width: 100%;
    background: var(--auth-primary);
    color: #fff;
    border: none;
    padding: 0.75rem;
    border-radius: 0.375rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    transition: background 0.2s;
    cursor: pointer;
}
.auth-btn-primary:hover {
    background: var(--auth-primary-dark);
    color: #fff;
    text-decoration: none;
}

/* ============== Outline 버튼 (보조 액션 — 회원가입 등) ============== */
.auth-btn-outline {
    display: block;
    width: 100%;
    padding: 0.65rem;
    border: 1.5px solid var(--auth-primary);
    background: #fff;
    color: var(--auth-primary);
    border-radius: 0.375rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    transition: all 0.2s;
}
.auth-btn-outline:hover {
    background: var(--auth-accent-light);
    color: var(--auth-primary-dark);
    border-color: var(--auth-primary-dark);
    text-decoration: none;
}

/* ============== "또는" 구분선 ============== */
.auth-divider {
    display: flex;
    align-items: center;
    margin: 1.25rem 0 0.75rem;
    font-size: 0.75rem;
    color: var(--auth-gray-600);
}
.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    border-top: 1px solid var(--auth-gray-200);
}
.auth-divider span {
    padding: 0 0.75rem;
}

/* ============== 작은 보조 텍스트 링크 ============== */
.auth-link {
    display: block;
    text-align: center;
    margin-top: 0.75rem;
    font-size: 0.825rem;
    color: var(--auth-gray-600);
    text-decoration: none;
}
.auth-link:hover {
    color: var(--auth-primary);
    text-decoration: none;
}

/* ============== 안내 박스 (Info) ============== */
.auth-info {
    background: var(--auth-accent-light);
    border-left: 3px solid var(--auth-accent);
    color: var(--auth-gray-800);
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.85rem;
    line-height: 1.55;
    margin-bottom: 1rem;
}

/* ============== 안내 텍스트 (작은 회색) ============== */
.auth-note {
    text-align: center;
    color: var(--auth-gray-600);
    font-size: 0.8rem;
    line-height: 1.5;
    margin-top: 0.75rem;
}

/* ============== 검증 에러 메시지 ============== */
.auth-card-body .text-danger {
    font-size: 0.825rem;
}

/* ============== 모바일 반응형 ============== */
@media (max-width: 480px) {
    .auth-card-header { height: 110px; }
    .auth-card-header h4 { font-size: 1.25rem; }
    .auth-card-header i { font-size: 1.5rem; }
    .auth-card-body { padding: 1.25rem 1.5rem 1.5rem; }
}