/* ===== 상단 네비게이션 바 (부트스트랩 5 커스텀 스타일) ===== */
.navbar-brand {
    font-weight: 700;
    color: #1e293b !important;
}

/* 드롭다운 토글 및 드롭다운 아이템 호버 및 활성화 커스텀 */
.navbar-nav .nav-link {
    color: #475569 !important;
    font-weight: 500;
    border-radius: 6px;
    transition: background-color 0.15s, color 0.15s;
    padding: 0.5rem 0.8rem !important;
}

.navbar-nav .nav-link:hover {
    background-color: #f1f5f9;
    color: #1e293b !important;
}

.navbar-nav .nav-link.active {
    color: #6366f1 !important;
    background-color: #f0f0ff;
    font-weight: 600;
}

.dropdown-menu {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    padding: 0.4rem 0;
}

.dropdown-item {
    color: #475569;
    font-size: 0.875rem;
    transition: background-color 0.15s, color 0.15s;
}

.dropdown-item:hover {
    background-color: #f1f5f9;
    color: #1e293b;
}

.dropdown-item.active {
    background-color: #f0f0ff;
    color: #6366f1;
    font-weight: 600;
}

/* ===== 모바일 반응형 ===== */
@media (max-width: 768px) {
    .top-navbar {
        height: 50px;
        padding: 0 0.75rem;
        align-items: center;
        gap: 0.15rem;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-menu-btn {
        font-size: 0.8rem;
        padding: 0.35rem 0.5rem;
    }

    .nav-dropdown {
        position: fixed;
        top: 50px;
        left: 0.5rem;
        right: 0.5rem;
        min-width: auto;
        width: calc(100% - 1rem);
        margin-top: 0;
    }

    .main-content {
        padding: 1.5rem 1rem;
    }

    .page-header h1 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .top-navbar {
        flex-wrap: nowrap;
    }

    .nav-menu-btn {
        font-size: 0.75rem;
        padding: 0.3rem 0.4rem;
    }
}