[해피CGI][cgimall] CSS Gooey Menu (Version 3)

**CSS Gooey Menu (Version 3)**는 SVG 필터와 CSS 트랜지션을 조합해 만든 인터랙티브한 원형 메뉴입니다.

버튼 클릭 시 서브 메뉴들이 액체처럼 부드럽게 퍼지고 합쳐지는 **'Gooey 효과'**가 특징이며, 시각적으로 독특하면서도 부드러운 사용자 경험을 제공합니다.
SVG 필터 기반이라 가볍고 해상도에 독립적이며, JavaScript 없이 순수 CSS로도 구현이 가능합니다.

HTML 구조

<h1>Gooey Menu</h1>

<h2>Using CSS and SVG Filters</h2>

By Lucas Bebber

Version 1 - Version 2 - Version 3 - Version 4

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">

 

<nav class="menu">

  <input type="checkbox" href="#" class="menu-open" name="menu-open" id="menu-open"/>

  <label class="menu-open-button" for="menu-open">

    <span class="hamburger hamburger-1"></span>

    <span class="hamburger hamburger-2"></span>

    <span class="hamburger hamburger-3"></span>

  </label>

  

  <a href="#" class="menu-item"> <i class="fa fa-bar-chart"></i> </a>

  <a href="#" class="menu-item"> <i class="fa fa-plus"></i> </a>

  <a href="#" class="menu-item"> <i class="fa fa-heart"></i> </a>

  <a href="#" class="menu-item"> <i class="fa fa-envelope"></i> </a>

  

  

</nav>

 

 

<!-- filters -->

 

    <defs>

      <filter id="shadowed-goo">

          

          <feGaussianBlur in="SourceGraphic" result="blur" stdDeviation="10" />

          <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 18 -7" result="goo" />

          <feGaussianBlur in="goo" stdDeviation="3" result="shadow" />

          <feColorMatrix in="shadow" mode="matrix" values="0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 1 -0.2" result="shadow" />

          <feOffset in="shadow" dx="1" dy="1" result="shadow" />

          <feComposite in2="shadow" in="goo" result="goo" />

          <feComposite in2="goo" in="SourceGraphic" result="mix" />

      </filter>

      <filter id="goo">

          <feGaussianBlur in="SourceGraphic" result="blur" stdDeviation="10" />

          <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 18 -7" result="goo" />

          <feComposite in2="goo" in="SourceGraphic" result="mix" />

      </filter>

    </defs>

</svg>

CSS 소스

@import "compass/css3";

 

//vars

$fg:#00bcd4;

$bg:#673ab7;

$pi:3.14;

 

//config

$menu-items:4;

$open-distance:105px;

$opening-angle:$pi*2;

 

body{

  background:$bg;

  color:white;

  text-align:center;

}

a{

  color:inherit;

}

h1, h2, h3, h4{

  margin:0;

  margin-bottom:10px;

  margin-top:10px;

}

h1{

  font-size:3em;

}

%goo{

  filter:url('#shadowed-goo');

  // debug 

  //background:rgba(255,0,0,0.2);

}

%ball{

  background:$fg;

  border-radius:100%;

  width:80px;

  height:80px;

  margin-left:-40px;

  position:absolute;

  top:20px;

  color:white;

  text-align:center;

  line-height:80px;

  transform:translate3d(0,0,0);

  transition:transform ease-out 200ms;

}

.menu-open{

  display:none;

}

.menu-item{

  @extend %ball;

}

.hamburger{

  $width:25px;

  $height:3px;

  width:$width;

  height:$height;

  background:white;

  display:block;

  position:absolute;

  top:50%;

  left:50%;

  margin-left:-$width/2;

  margin-top:-$height/2;

  transition:transform 200ms;

}

$hamburger-spacing:8px;

.hamburger-1{

  transform:translate3d(0,-$hamburger-spacing,0);

}

.hamburger-2{

  transform:translate3d(0,0,0);

}

.hamburger-3{

  transform:translate3d(0,$hamburger-spacing,0);

}

.menu-open:checked+.menu-open-button{

  .hamburger-1{

    transform:translate3d(0,0,0) rotate(45deg); 

  }

  .hamburger-2{

    transform:translate3d(0,0,0) scale(0.1,1);

  }

  .hamburger-3{

    transform:translate3d(0,0,0) rotate(-45deg); 

  }

}

.menu{

  @extend %goo;

  $width:650px;

  $height:150px;

  position:absolute;

  left:50%;

  margin-left:-80px;

  padding-top:20px;

  padding-left:80px;

  width:$width;

  height:$height;

  box-sizing:border-box;

  font-size:20px;

  text-align:left;

}

 

 

.menu-item{

  &:hover{

    background:white;

    color:$fg;

  }

  @for $i from 1 through $menu-items{

    &:nth-child(#{$i+2}){

      transition-duration:180ms;

    }

  }

}

 

.menu-open-button{

  @extend %ball;

  z-index:2;

  transition-timing-function:cubic-bezier(0.175, 0.885, 0.320, 1.275);

  transition-duration:400ms;

  transform:scale(1.1,1.1) translate3d(0,0,0);

  cursor:pointer;

}

.menu-open-button:hover{

  transform:scale(1.2,1.2) translate3d(0,0,0);

}

.menu-open:checked+.menu-open-button{

  transition-timing-function:linear;

  transition-duration:200ms;

  transform:scale(0.8,0.8) translate3d(0,0,0);

}

 

.menu-open:checked~.menu-item{

  transition-timing-function:cubic-bezier(0.165, 0.840, 0.440, 1.000);

  @for $i from 1 through $menu-items{

 

    &:nth-child(#{$i+2}){

      transition-duration:90ms+(100ms*$i);

      transform:translate3d(110px*$i,0,0);

    }

  }

}