Liquid Glass Sidebar

Code

HTML

<!-- Font Awesome Icons; Make sure to add it in the <head> tag -->
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">

<!-- SVG Filter for Glass Distortion -->
<svg style="display: none">
  <filter id="glass-distortion">
    <feTurbulence type="turbulence" baseFrequency="0.008" numOctaves="2" result="noise" />
    <feDisplacementMap in="SourceGraphic" in2="noise" scale="77" />
  </filter>
</svg>

<div class="glass-sidebar">
  <div class="glass-filter"></div>
  <div class="glass-overlay"></div>
  <div class="glass-specular"></div>
  <div class="glass-content">
    <div class="sidebar-header">
      <h3>Menu</h3>
    </div>
    <nav class="sidebar-nav">
      <a href="#" class="nav-item active">
        <i class="fas fa-home"></i>
        <span>Home</span>
      </a>
      <a href="#" class="nav-item">
        <i class="fas fa-user"></i>
        <span>Profile</span>
      </a>
      <a href="#" class="nav-item">
        <i class="fas fa-cog"></i>
        <span>Settings</span>
      </a>
      <a href="#" class="nav-item">
        <i class="fas fa-chart-bar"></i>
        <span>Analytics</span>
      </a>
      <a href="#" class="nav-item">
        <i class="fas fa-envelope"></i>
        <span>Messages</span>
      </a>
    </nav>
  </div>
</div>

CSS

/* Glass Sidebar Container */
.glass-sidebar {
  --bg-color: rgba(255, 255, 255, 0.25);
  --highlight: rgba(255, 255, 255, 0.75);
  --text: #ffffff;
  
  position: relative;
  width: 280px;
  height: 500px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
}

.glass-filter,
.glass-overlay,
.glass-specular {
  position: absolute;
  inset: 0;
  border-radius: inherit;
}

.glass-filter {
  z-index: 1;
  backdrop-filter: blur(4px);
  filter: url(#glass-distortion) saturate(120%) brightness(1.15);
}

.glass-overlay {
  z-index: 2;
  background: var(--bg-color);
}

.glass-specular {
  z-index: 3;
  box-shadow: inset 1px 1px 1px var(--highlight);
}

.glass-content {
  position: relative;
  z-index: 4;
  color: var(--text);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h3 {
  margin: 0;
  font-size: 24px;
  font-weight: 600;
}

.sidebar-nav {
  padding: 20px 0;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  color: var(--text);
  text-decoration: none;
  transition: background-color 0.3s;
  gap: 12px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-item:hover,
.nav-item.active {
  background: rgba(255, 255, 255, 0.1);
}

.nav-item i {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

.nav-item span {
  font-size: 16px;
  opacity: 0.9;
}

/* Dark mode styles */
@media (prefers-color-scheme: dark) {
  .glass-sidebar {
    --bg-color: rgba(0, 0, 0, 0.25);
    --highlight: rgba(255, 255, 255, 0.15);
  }
}

JavaScript

document.addEventListener('DOMContentLoaded', function() {
  // Get all glass elements
  const glassElements = document.querySelectorAll('.glass-sidebar');
  
  // Add mousemove effect for each glass element
  glassElements.forEach(element => {
    element.addEventListener('mousemove', handleMouseMove);
    element.addEventListener('mouseleave', handleMouseLeave);
  });
  
  // Handle mouse movement over glass elements
  function handleMouseMove(e) {
    const rect = this.getBoundingClientRect();
    const x = e.clientX - rect.left;
    const y = e.clientY - rect.top;
    
    // Update filter turbulence based on mouse position
    const filter = this.querySelector('filter feDisplacementMap');
    if (filter) {
      const scaleX = (x / rect.width) * 100;
      const scaleY = (y / rect.height) * 100;
      filter.setAttribute('scale', Math.min(scaleX, scaleY));
    }
    
    // Add highlight effect
    const specular = this.querySelector('.glass-specular');
    if (specular) {
      specular.style.background = `radial-gradient(
        circle at ${x}px ${y}px,
        rgba(255,255,255,0.15) 0%,
        rgba(255,255,255,0.05) 30%,
        rgba(255,255,255,0) 60%
      )`;
    }
  }
  
  // Reset effects when mouse leaves
  function handleMouseLeave() {
    const filter = this.querySelector('filter feDisplacementMap');
    if (filter) {
      filter.setAttribute('scale', '77');
    }
    
    const specular = this.querySelector('.glass-specular');
    if (specular) {
      specular.style.background = 'none';
    }
  }

  // Add nav item click handler
  const navItems = document.querySelectorAll('.nav-item');
  navItems.forEach(item => {
    item.addEventListener('click', function(e) {
      e.preventDefault();
      navItems.forEach(navItem => navItem.classList.remove('active'));
      this.classList.add('active');
    });
  });
});

Apple Liquid Glass Sidebar

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Code