body {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(120deg, #e8f7ff, #cdefff);
    color: #222;
    overflow-x: hidden;
    position: relative;
}
.floating-cube {
    position: fixed;
    width: 100px;
    height: 100px;
    transform-style: preserve-3d;
    pointer-events: none;
    z-index: -9999;
}
.floating-cube .face {
    position: absolute;
    width: 100px;
    height: 100px;
    background: #00aaff;
}
.front  { transform: rotateY(0deg) translateZ(50px); }
.back   { transform: rotateY(180deg) translateZ(50px); }
.right  { transform: rotateY(90deg) translateZ(50px); }
.left   { transform: rotateY(-90deg) translateZ(50px); }
.top    { transform: rotateX(90deg) translateZ(50px); }
.bottom { transform: rotateX(-90deg) translateZ(50px); }
header {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(120deg, #00aaff, #00e6ff);
    color: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    animation: fadeInDown 1s ease;
    position: relative;
    z-index: 2;
}
header h1 { font-size: 2.5rem; margin: 0; }
header p { font-size: 1.2rem; opacity: 0.9; }
section {
    max-width: 900px;
    margin: 50px auto;
    padding: 20px;
    background: rgba(255,255,255,0.85);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0,0,0,0.05);
    opacity: 0;
    transform: translateY(30px);
    transition: all 1s ease;
    position: relative;
    z-index: 2;
}
section img {
	width: 100%;
}
section.visible { opacity: 1; transform: translateY(0); }
a { text-decoration: none; color: #0077aa; }
h2 { color: #00aaff; margin-bottom: 15px; }
ul { list-style: none; padding: 0; }
ul li {
    background: rgba(0, 174, 255, 0.08);
    padding: 10px 15px;
    margin: 5px 0;
    border-radius: 10px;
    transition: background 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}
ul li:hover { background: rgba(0, 174, 255, 0.2); }
footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    background: rgba(0,0,0,0.05);
    font-size: 0.9rem;
    position: relative;
    z-index: 2;
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}
#lang-toggle {
    position: fixed;
    top: 10px;
    right: 10px;
    z-index: 1000;
    padding: 5px 10px;
    border: none;
    border-radius: 5px;
    background: #00aaff;
    color: white;
    transition: background 0.3s ease;
}
#lang-toggle:hover {
    cursor: pointer;
    background: #11ffff;
}
.tabs {
    display: flex;
    justify-content: center;
    background: rgba(0,0,0,0.05);
    gap: 10px;
    padding: 10px;
}
.tab-btn {
    padding: 10px 20px;
    cursor: pointer;
    border: none;
    background: transparent;
    font-size: 1rem;
    border-radius: 5px;
    transition: 0.3s;
}
.tab-btn:hover {
    background: rgba(0, 174, 255, 0.2);
}
.tab-btn.active {
    background: #00aaff;
    color: white;
}
.tab-content {
    display: none;
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
}
.tab-content.active { display: block; }