* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    overflow-x: hidden;
    background-color: #f9f9f9;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #6e8efb, #a777e3);
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(45deg);
}

@keyframes wave {
    0% { transform: rotate(45deg) translateX(-30%) translateY(-30%); }
    100% { transform: rotate(45deg) translateX(30%) translateY(30%); }
}

h1 {
    font-size: 5rem;
    color: white;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
    text-align: center;
    margin-bottom: 20px;
}

header p {
    font-size: 1.5rem;
    color: white;
    position: relative;
    z-index: 1;
}

main {
    flex: 1;
    padding: 80px 20px;
}

.task-list {
    max-width: 1200px;
    margin: 0 auto;
}

ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

li {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    position: relative;
    transition: all 0.3s ease;
}

li::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    transition: all 0.3s ease;
}

li:nth-child(1)::before { background: #a777e3; }
li:nth-child(2)::before { background: #a777e3; }
li:nth-child(3)::before { background: #a777e3; }
li:nth-child(4)::before { background: #a777e3; }

li:hover {
    transform: translateY(-10px);
}

li:hover::before {
    height: 10px;
}

li a {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
    text-decoration: none;
    color: #333;
    text-align: center;
    height: 100%;
}

li a::before {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

@media (max-width: 768px) {
    h1 {
        font-size: 3rem;
    }
    
    ul {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
}