body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, #667eea, #764ba2);
}

/* Main Container */
.container {
    flex: 1;
    width: 95%;
    max-width: 500px;
    margin: 40px auto;
    animation: fadeIn 0.8s ease-in-out;
}

/* Title */
h1 {
    text-align: center;
    color: white;
    font-size: 30px;
    letter-spacing: 1px;
    margin-bottom: 30px;
}

/* Card Style */
.card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(12px);
    padding: 25px;
    border-radius: 20px;
    margin: 20px 0;
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.3);
    transition: 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

/* Flex Row */
.flex {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Inputs */
input, select {
    flex: 1;
    padding: 12px;
    border-radius: 10px;
    border: none;
    outline: none;
}

/* Buttons */
button {
    padding: 10px 18px;
    border-radius: 10px;
    border: none;
    background: linear-gradient(45deg, #4facfe, #00f2fe);
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    transform: scale(1.05);
}

.full-btn {
    width: 100%;
}

/* Lists */
ul {
    list-style: none;
    padding: 0;
    margin-top: 10px;
}

li {
    background: rgba(255,255,255,0.25);
    padding: 10px;
    margin: 6px 0;
    border-radius: 8px;
    font-size: 14px;
}

/* Result Styling */
#result p {
    background: rgba(255,255,255,0.25);
    padding: 10px;
    border-radius: 8px;
    margin: 8px 0;
    font-weight: 500;
    text-align: center;
}

/* Footer (Professional Way) */
footer {
    text-align: center;
    padding: 15px;
    color: rgba(255,255,255,0.85);
    font-size: 14px;
    letter-spacing: 0.5px;
    
}

/* Responsive */
@media (max-width: 500px) {
    .flex {
        flex-direction: column;
    }
}

/* Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}