* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #f5f7fa, #e3e9ff);
    color: #111;
    overflow-x: hidden;
}

/* Shapes */
.shape {
    position: absolute;
    opacity: 0.12;
    filter: blur(2px);
    animation: float 18s ease-in-out infinite;
}

.circle {
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    top: -80px;
    left: -80px;
}

.square {
    width: 350px;
    height: 350px;
    border-radius: 35px;
    background: linear-gradient(135deg, #5865F2, #3b4de0);
    bottom: -120px;
    right: -60px;
    animation-delay: -7s;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-40px); }
    100% { transform: translateY(0px); }
}

/* Container */
.container {
    width: 90%;
    max-width: 900px;
    margin: 180px auto 120px;
    padding: 60px 50px;
    background: rgba(255, 255, 255, 0.65);
    border-radius: 35px;
    backdrop-filter: blur(15px);
    box-shadow: 0 15px 60px rgba(0, 0, 0, 0.1);
}

/* Titles */
h1 {
    font-size: 50px;
    font-weight: 900;
    text-align: center;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: transparent;
    -webkit-background-clip: text;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-top: 35px;
    padding: 20px 55px;
    background: linear-gradient(135deg, #5865F2, #3b4de0);
    color: white;
    text-decoration: none;
    font-size: 20px;
    border-radius: 50px;
    font-weight: 700;
    box-shadow: 0 15px 35px rgba(88, 101, 242, 0.4);
    transition: 0.3s;
}

.btn:hover {
    transform: translateY(-8px);
    box-shadow: 0 22px 55px rgba(88, 101, 242, 0.65);
}

/* Inputs */
input {
    width: 100%;
    padding: 15px;
    border-radius: 15px;
    border: none;
    margin-top: 10px;
    background: rgba(255,255,255,0.7);
    box-shadow: 0 0 15px rgba(0,0,0,0.05);
    font-size: 17px;
}

/* Sections */
section {
    margin-top: 40px;
    padding: 25px;
    background: rgba(255,255,255,0.5);
    border-radius: 25px;
    backdrop-filter: blur(10px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.07);
}

pre {
    background: rgba(255,255,255,0.8);
    padding: 20px;
    border-radius: 15px;
    overflow-x: auto;
}

/* Small screens */
@media (max-width: 700px) {
    h1 { font-size: 38px; }
    .container { padding: 40px 25px; }
}