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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #012ffc 0%, #ff0000 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    text-align: center;
    max-width: 800px;
    width: 100%;
}

.header {
    margin-bottom: 50px;
    color: white;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.file-link {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px 20px;
    border-radius: 15px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.file-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #012ffc 0%, #ff0000 100%);
    transition: left 0.5s ease;
}

.file-link:hover::before {
    left: 100%;
}

.file-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    border-color: #142366;
    background: white;
}

.file-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    color: #667eea;
}

.file-name {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.file-desc {
    font-size: 0.9rem;
    color: #666;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.file-link:hover .file-desc {
    opacity: 1;
    transform: translateY(0);
}