/* 전체 배경: 고급스러운 그라디언트 */
body {
    background: linear-gradient(135deg, #dbe9f4, #f8f9fc);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
}

/* 로그인 카드: Glassmorphism 핵심 */
.card {
    background: rgba(255, 255, 255, 0.15); /* 반투명 흰색 */
    border-radius: 1rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(12px);           /* 💡 핵심: 배경 흐림 */
    -webkit-backdrop-filter: blur(12px);   /* Safari 지원 */
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: fadeInUp 0.6s ease forwards;
}

/* 카드 호버 시 살짝 들림 */
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* 카드 내부 텍스트 스타일 */
.card h3 {
    color: #1a557a;
}

.card p {
    font-size: 0.9rem;
    color: #495057;
}

/* 입력 필드 스타일 */
.form-control {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: #000;
}

.form-control:focus {
    border-color: #1a557a;
    box-shadow: 0 0 0 0.2rem rgba(26, 85, 122, 0.25);
    background: rgba(255, 255, 255, 0.8);
}

/* 버튼 스타일 */
.btn-primary {
    background-color: #1a557a;
    border-color: #1a557a;
}

.btn-primary:hover {
    background-color: #174b6a;
    border-color: #174b6a;
}

/* Fade-in 애니메이션 */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 반응형 최소 폭 제한 */
.card {
    max-width: 400px;
    width: 100%;
}

/* password input + eye 버튼 간 경계 개선 */
.input-group .form-control {
    border-right: 0;
}
.input-group .btn {
    border-left: 0;
}

/* toggle 버튼의 포커스 링 명확화 */
#togglePassword:focus {
    box-shadow: 0 0 0 0.2rem rgba(26, 85, 122, 0.25);
    outline: none;
}

/* remember-me 간격 */
.form-check .form-check-input {
    cursor: pointer;
}
.form-check .form-check-label {
    cursor: pointer;
}

/* visually-hidden (부트스트랩 없을 때 안전망) */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important; /* added line */
    border: 0 !important;
}

/* ✅ Trademark cost policy CTA */
.policy-cta {
    font-weight: 800;
    letter-spacing: 0.2px;
    border: 0;
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.15);
    transform: translateY(0);
    transition: transform .15s ease, box-shadow .15s ease, filter .15s ease;
}

.policy-cta:hover,
.policy-cta:focus {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
    filter: brightness(1.03);
}

.policy-cta:active {
    transform: translateY(0);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.15);
}