/* Main Styles */
:root {
    --primary-color: #0052cc;
    --secondary-color: #0072e1;
    --accent-color: #ff9900;
    --light-bg: #f8f9fa;
    --dark-bg: #343a40;
}

body {
    font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Header Styles */
header {
    position: relative;
    overflow: hidden;
    background-color: var(--light-bg);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
    z-index: 0;
}

header h1, header p {
    position: relative;
    z-index: 1;
}

.display-4 {
    font-weight: 600;
    color: var(--primary-color);
}

/* Navigation */
.navbar {
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 700;
}

.nav-link {
    font-weight: 500;
}

.dropdown-item:active {
    background-color: var(--primary-color);
}

/* Cards */
.card {
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.1);
}

.card-title {
    color: var(--primary-color);
    font-weight: 600;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Visualization containers */
.visualization-container {
    margin: 2rem 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
}

.visualization-header {
    background-color: var(--light-bg);
    padding: 1rem;
    border-bottom: 1px solid #e9ecef;
}

.visualization-content {
    background-color: white;
}

.visualization-iframe {
    width: 100%;
    border: none;
    height: 700px;
}

/* Footer */
footer {
    background-color: var(--dark-bg);
}

footer a {
    text-decoration: none;
    transition: opacity 0.2s;
}

footer a:hover {
    opacity: 0.8;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .visualization-iframe {
        height: 500px;
    }
}

/* Print styles */
@media print {
    .navbar, footer {
        display: none;
    }
    
    .visualization-iframe {
        height: auto;
        page-break-inside: avoid;
    }
}