/* 생년월일 미입력 회원 로그인 시 필수 입력 모달 (닫기 없음, 전체 차단) */
#mandatory-birth-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 100002;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    background: rgba(15, 23, 42, 0.55);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

#mandatory-birth-overlay.mandatory-birth-overlay--visible {
    display: flex;
}

body.mandatory-birth-open {
    overflow: hidden;
}

.mandatory-birth-card {
    width: 100%;
    max-width: 22rem;
    padding: 1.5rem 1.35rem;
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
    border: 1px solid #e2e8f0;
}

.mandatory-birth-card h2 {
    margin: 0 0 0.5rem;
    font-size: 1.125rem;
    font-weight: 700;
    color: #0f172a;
}

.mandatory-birth-card p {
    margin: 0 0 1rem;
    font-size: 0.875rem;
    line-height: 1.55;
    color: #475569;
}

.mandatory-birth-card label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: #334155;
    margin-bottom: 0.35rem;
}

.mandatory-birth-card input[type="date"] {
    width: 100%;
    padding: 0.55rem 0.65rem;
    font-size: 0.9375rem;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-family: inherit;
    color: #0f172a;
    box-sizing: border-box;
}

.mandatory-birth-card input[type="date"]:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.mandatory-birth-error {
    margin: 0.65rem 0 0;
    font-size: 0.8125rem;
    color: #b91c1c;
    line-height: 1.45;
}

.mandatory-birth-error[hidden] {
    display: none !important;
}

.mandatory-birth-submit {
    width: 100%;
    margin-top: 1rem;
    padding: 0.65rem 1rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: #fff;
    background: #2563eb;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-family: inherit;
}

.mandatory-birth-submit:hover:not(:disabled) {
    background: #1d4ed8;
}

.mandatory-birth-submit:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.mandatory-birth-hint {
    margin: 0.5rem 0 0;
    font-size: 0.75rem;
    color: #64748b;
    line-height: 1.45;
}