/* Import Inter font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

body {
    font-family: 'Inter', sans-serif;
    background-color: #f8fafc;
    color: #1e293b;
}

.glass-header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

.step-card {
    transition: all 0.3s ease;
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

.content-section {
    display: none;
    animation: fadeIn 0.4s ease-in-out;
}

.content-section.active {
    display: block;
}

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

/* Chart Containers */
.chart-container-large {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    height: 400px;
    max-height: 500px;
}

.chart-container-medium {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    height: 300px;
    max-height: 400px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

.nav-link.active {
    color: #0284c7;
    border-bottom: 2px solid #0284c7;
    font-weight: 600;
}

/* Tooltip style for terms */
.term-tooltip {
    position: relative;
    cursor: help;
    border-bottom: 1px dotted #64748b;
}

.term-tooltip:hover::after {
    content: attr(data-explanation);
    position: absolute;
    bottom: 120%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #1e293b;
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.875rem;
    width: max-content;
    max-width: 250px;
    z-index: 50;
    text-align: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}