body {
    margin: 0;
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(to bottom, #0074D9, #333333);
    color: #fff;
    overflow-x: hidden;
    animation: gradientShift 20s infinite alternate;
}
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}
header {
    background: radial-gradient(circle, #0074D9, #222);
    padding: 20px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
header h1 {
    font-family: 'Roboto Bold', sans-serif;
    font-size: 2.5em;
    color: #fff;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 2;
}
header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 200%;
    height: 100%;
    background: repeating-linear-gradient(
        45deg,
        rgba(255, 159, 0, 0.2),
        rgba(255, 159, 0, 0.2) 10px,
        transparent 10px,
        transparent 20px
    );
    transform: rotate(-45deg);
    animation: shineEffect 5s infinite linear;
}
@keyframes shineEffect {
    0% { transform: translateX(-100%) rotate(-45deg); }
    100% { transform: translateX(100%) rotate(-45deg); }
}
.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}
.card {
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    transition: transform 0.3s ease;
    position: relative;
    padding: 20px;
    color: #333;
}
.card:hover {
    transform: translateY(-10px);
}
.card img {
    width: 100%;
    height: auto;
    display: block;
}
.code-block {
    background: #2d2d2d;
    color: #fff;
    padding: 15px;
    border-radius: 8px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}
@media (max-width: 768px) {
    header h1 { font-size: 2em; }
    .container { grid-template-columns: 1fr; }
    .card { padding: 15px; }
}
footer {
    background: #0074D9;
    color: #fff;
    text-align: center;
    padding: 15px 0;
    font-size: 0.9em;
    margin-top: 20px;
}
button {
    background: linear-gradient(to bottom, #FF9F00, #E68A00);
    border: none;
    color: #fff;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}
button:after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: all 0.5s ease;
}
button:hover:after {
    width: 200%;
    height: 200%;
    opacity: 1;
}
.icon {
    width: 48px;
    height: 48px;
    background: radial-gradient(circle, #FF9F00, #34C759);
    border-radius: 50%;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    display: inline-block;
    margin-right: 10px;
}