body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #FFFFFF 0%, #F0F8FF 100%);
    color: #111111;
    line-height: 1.6;
}

header {
    background: linear-gradient(90deg, #0A1F44, #6C5CE7);
    color: #FFFFFF;
    padding: 20px 0;
    text-align: center;
}

header h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    margin: 0;
}

.tab-container {
    display: flex;
    flex-direction: column;
    margin: 20px;
}

.tabs {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    overflow-x: auto;
}

.tab-item {
    padding: 15px 25px;
    cursor: pointer;
    background: linear-gradient(135deg, #0A1F44, #2B487A);
    color: #FFFFFF;
    border: 1px solid #6C5CE7;
    font-family: 'Poppins', sans-serif;
    transition: all 0.3s ease;
}

.tab-item.active {
    background: linear-gradient(135deg, #6C5CE7, #8E77C2);
}

.tab-content .tab-pane {
    display: none;
    padding: 20px;
    background-color: #FFFFFF;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.tab-content .tab-pane.active {
    display: block;
}

.card {
    background: #FFFFFF;
    border: 1px solid #E0E0E0;
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.highlight {
    color: #FF6B6B;
    font-weight: bold;
    transition: all 0.3s ease;
}

.highlight:hover {
    box-shadow: 0 0 10px #FF6B6B;
    transform: scale(1.05);
}

pre {
    background: #F8F8F8;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

code {
    color: #0A1F44;
    font-family: 'Courier New', monospace;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

@media (max-width: 768px) {
    .tabs {
        flex-direction: column;
    }

    .tab-item {
        width: 100%;
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.tab-pane {
    animation: fadeIn 0.5s ease-in-out;
}