/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background-color: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

/* Header styles */
header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 3px solid #667eea;
}

h1 {
    color: #667eea;
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    color: #666;
    font-size: 1.1em;
    margin-bottom: 10px;
}

.last-updated {
    color: #999;
    font-size: 0.9em;
    font-style: italic;
}

/* Section styles */
.section {
    margin-bottom: 50px;
}

.section h2 {
    color: #333;
    font-size: 1.8em;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e0e0e0;
}

/* Plot container styles */
.plot-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(600px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.plot-item {
    background-color: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.plot-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.plot-item img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    display: block;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.plot-item img.loaded {
    opacity: 1;
}

.plot-title {
    font-size: 1.2em;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
    text-align: center;
}

/* Embedding instructions */
.embed-section {
    background-color: #f9f9f9;
    border-left: 4px solid #0066cc;
    padding: 20px;
    margin-top: 30px;
    border-radius: 4px;
}

.embed-section h3 {
    color: #0066cc;
    margin-bottom: 15px;
}

.code-block {
    background-color: #2d2d2d;
    color: #f8f8f2;
    padding: 15px;
    border-radius: 4px;
    overflow-x: auto;
    margin: 10px 0;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    line-height: 1.4;
}

.code-block code {
    display: block;
    white-space: pre;
}

.note {
    background-color: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 12px;
    margin: 15px 0;
    border-radius: 4px;
}

.note strong {
    color: #856404;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 50px;
    padding-top: 20px;
    border-top: 2px solid #e0e0e0;
    color: #666;
    font-size: 0.9em;
}

footer a {
    color: #0066cc;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 20px;
    }

    h1 {
        font-size: 2em;
    }

    .plot-container {
        grid-template-columns: 1fr;
    }

    .code-block {
        font-size: 0.8em;
    }
}

/* Conference grid for better organization */
.conference-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

/* Power 5 conference styling */
.power5-grid {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 25px;
    border-radius: 12px;
    border: 2px solid #667eea;
}

.power5-item {
    background: linear-gradient(135deg, #ffffff 0%, #f9f9f9 100%);
    border: 2px solid #667eea;
}

.power5-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(102, 126, 234, 0.3);
    border-color: #764ba2;
}

/* Error message styling */
.error-message {
    color: #721c24;
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 6px;
    padding: 15px;
    margin-top: 15px;
    text-align: center;
    font-size: 0.95em;
    font-weight: 500;
}

/* Loading spinner for images */
.plot-item.loading::before {
    content: '';
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 10;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@media (max-width: 768px) {
    .conference-grid {
        grid-template-columns: 1fr;
    }
    
    .power5-grid {
        padding: 15px;
    }
}