* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #0d1117;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

#globeViz {
    width: 100vw;
    height: 100vh;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.title-overlay {
    position: absolute;
    top: 24px;
    left: 24px;
    color: #ffffff;
    z-index: 10;
    pointer-events: none;
    background: rgba(13, 17, 23, 0.75);
    padding: 16px;
    border-radius: 8px;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.title-overlay h2 {
    margin: 0 0 6px 0;
    font-size: 20px;
    font-weight: 700;
    text-transform: uppercase;
}

.title-overlay p {
    margin: 0;
    font-size: 13px;
    color: #8b949e;
}

/* Kiểu dáng cho phần hiển thị Nguồn tích hợp sẵn */
.source-overlay {
    position: absolute;
    bottom: 24px;
    right: 24px;
    color: #8b949e;
    z-index: 10;
    background: rgba(13, 17, 23, 0.85);
    padding: 8px 14px;
    border-radius: 6px;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 12px;
    pointer-events: auto; /* Cho phép tương tác click vào link */
}

.source-overlay a {
    color: #58a6ff;
    text-decoration: none;
    font-weight: 500;
}

.source-overlay a:hover {
    text-decoration: underline;
}

/* Kiểu dáng cho Tooltip tùy chỉnh */
#custom-tooltip {
    position: fixed;
    display: none;
    background: rgba(13, 17, 23, 0.95);
    border: 1px solid #30363d;
    border-radius: 8px;
    width: 300px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.9);
    pointer-events: none;
    z-index: 9999999;
    overflow: hidden;
    color: #c9d1d9;
}

#tt-img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    display: block;
    background-color: #0d1117;
    border-bottom: 1px solid #30363d;
}

.tt-content {
    padding: 14px;
}

#tt-title {
    font-size: 16px;
    font-weight: 600;
    color: #f0f6fc;
    margin-bottom: 4px;
    line-height: 1.3;
}

#tt-cost {
    font-size: 13px;
    color: #58a6ff;
    margin-bottom: 8px;
    font-weight: 600;
}

#tt-desc {
    font-size: 12px;
    line-height: 1.5;
    color: #8b949e;
    margin: 0;
}

/* Responsive tối ưu hiển thị mobile */
@media (max-width: 768px) {
    .title-overlay {
        top: 12px;
        left: 12px;
        padding: 10px;
    }
    .title-overlay h2 { font-size: 16px; }
    .title-overlay p { font-size: 11px; }
    .source-overlay {
        bottom: 12px;
        right: 12px;
        padding: 6px 10px;
        font-size: 11px;
    }
    #custom-tooltip { width: 240px; }
    #tt-img { height: 120px; }
}