body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: url('../img/background.webp') no-repeat center center fixed;
    background-size: cover;
    color: white;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 60px;
    background: rgba(10, 20, 30, 0.55);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

header img {
    height: 50px;
    cursor: pointer;
}

nav a {
    color: white;
    margin-left: 25px;
    text-decoration: none;
    font-weight: 500;
}

.hero {
    text-align: center;
    padding: 160px 20px;
}

.hero, .lab {
    text-align: center;
    padding: 120px 20px;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 20px;
}

.btn {
    background: linear-gradient(90deg,#00c6ff,#0072ff);
    padding: 14px 38px;
    border-radius: 40px;
    border: none;
    cursor: pointer;
    margin: 15px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    box-shadow: 0 0 25px rgba(0,198,255,0.7);
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 0 40px rgba(0,198,255,1);
}

.headers-box {
    background: rgba(0,0,0,0.7);
    padding: 20px;
    border-radius: 12px;
    white-space: pre-wrap;
    margin-top: 20px;
    backdrop-filter: blur(5px);
}

.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #00c6ff;
    color: black;
    padding: 15px 25px;
    border-radius: 10px;
}

#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}