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

body {
    min-height: 100vh;
    padding: 2rem;
    background: linear-gradient(135deg, #2e1a2b 0%, #bd47a8 100%);
    color: white;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
}

.header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.header h1 {
    font-size: 2.5rem;
    background: linear-gradient(to right, #000000, #b906ad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.year-section {
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.year-section:hover {
    transform: translateX(10px);
}

.year-button {
    width: 100%;
    padding: 1.2rem;
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    cursor: pointer;
    text-align: left;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.year-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    transition: 0.5s;
}

.year-button:hover::before {
    left: 100%;
}

.year-button:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.01);
    box-shadow: 0 8px 32px 0 rgba(135, 31, 131, 0.457);
}

.tasks {
    display: none;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    margin-top: 0.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transform-origin: top;
    transition: all 0.3s ease;
}

.year-section.active .tasks {
    display: block;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.task-link {
    display: block;
    padding: 1rem;
    color: #e2e8f0;
    text-decoration: none;
    margin: 0.5rem 0;
    border-radius: 8px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.task-link:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(10px);
    color: #ff0062;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }
    
    .header h1 {
        font-size: 2rem;
    }
}