body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #0A0A0A 0%, #1A0F2D 50%, #0A0A0A 100%);
}
.chart-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    height: 350px;
    max-height: 400px;
}
@media (min-width: 768px) {
    .chart-container {
        height: 400px;
    }
}
.timeline-item-content {
    display: none;
    transition: all 0.3s ease-in-out;
}
.timeline-item.active .timeline-item-content {
    display: block;
}
.timeline-dot {
    transition: all 0.3s ease;
}
.timeline-item.active .timeline-dot {
    transform: scale(1.5);
    box-shadow: 0 0 0 4px rgba(0, 255, 255, 0.3);
}
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.8);
    justify-content: center;
    align-items: center;
}
.modal-content {
    background-color: #1a1a1a;
    color: #E0E0E0;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,255,255,0.3);
    max-width: 600px;
    width: 90%;
    position: relative;
    animation-name: animatetop;
    animation-duration: 0.4s;
    border: 1px solid #00FFFF;
}
@keyframes animatetop {
    from {top: -300px; opacity: 0}
    to {top: 0; opacity: 1}
}
.close-button {
    position: absolute;
    top: 10px;
    right: 15px;
    color: #00FFFF;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}
.close-button:hover,
.close-button:focus {
    color: #FF00FF;
    text-decoration: none;
    cursor: pointer;
}
.loader {
    border: 4px solid #333;
    border-top: 4px solid #00FFFF;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
    display: inline-block;
    vertical-align: middle;
    margin-right: 8px;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}