/* ML Fundamentals Index Page Styles */
/* File location: static/css/tutorials/ml_fundamentals/index.css */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Universal text color override for ML Fundamentals content */
body,
body *,
main,
main *,
.azbn-section,
.azbn-section *,
.azbn-container,
.azbn-container *,
h1, h2, h3, h4, h5, h6,
p, label, span, div, li, ul, ol, strong, em {
    color: #333 !important;
}

/* Ensure proper background for content areas */
.azbn-section,
.azbn-container {
    background: white !important;
}

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

/* Main content styling */
main {
    padding-top: 100px;
}

.azbn-section {
    padding: 2rem 0;
}

.azbn-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Course title styling */
h1 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #333 !important;
    font-weight: 700;
}

/* Course description */
.azbn-container > p {
    text-align: center;
    font-size: 1.2rem;
    color: #666 !important;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Grid layout for course chapters */
.azbn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

/* Chapter cards styling */
.azbn-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1rem 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.azbn-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    border-color: #667eea;
}

.azbn-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.azbn-card:hover::before {
    opacity: 1;
}

.azbn-card h3 {
    color: #2c3e50 !important;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.azbn-card p {
    color: #555 !important;
    line-height: 1.6;
    margin-bottom: 1rem;
    font-weight: 500;
}

.azbn-card ul {
    margin: 1rem 0;
    padding-left: 1.2rem;
}

.azbn-card li {
    color: #666 !important;
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

/* Skills tags */
.azbn-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.azbn-tag {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white !important;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* Button styling */
.azbn-btn {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white !important;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.azbn-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    filter: brightness(1.1);
}

.azbn-btn.azbn-secondary {
    background: white;
    color: #667eea !important;
    border: 2px solid #667eea;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
}

.azbn-btn.azbn-secondary:hover {
    background: #667eea;
    color: white !important;
}

/* Course navigation section */
.azbn-container > div[style*="margin: 3rem 0"] {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 2rem;
    margin: 3rem 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.azbn-container > div[style*="margin: 3rem 0"] h2 {
    color: #333 !important;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.azbn-container > div[style*="margin: 3rem 0"] > div {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Prerequisites section */
.azbn-deployment-status {
    background: linear-gradient(135deg, #e8f5e8 0%, #f0f8f0 100%);
    border: 2px solid #4caf50;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    position: relative;
}

.azbn-deployment-status::before {
    content: '📋';
    position: absolute;
    top: -12px;
    left: 20px;
    background: #4caf50;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.azbn-deployment-status p {
    color: #333 !important;
    margin-bottom: 0.5rem;
}

.azbn-deployment-status p:first-child {
    font-weight: 600;
    font-size: 1.1rem;
}

/* Final navigation buttons */
.azbn-container > div[style*="margin: 2rem 0; text-align: center;"] {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Responsive Design */
@media (max-width: 768px) {
    .azbn-container {
        padding: 0 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .azbn-container > p {
        font-size: 1rem;
    }
    
    .azbn-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .azbn-card {
        padding: 1.25rem;
    }
    
    .azbn-card h3 {
        font-size: 1.2rem;
    }
    
    .azbn-container > div[style*="margin: 3rem 0"] > div {
        flex-direction: column;
        align-items: center;
    }
    
    .azbn-btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    main {
        padding-top: 80px;
    }
    
    .azbn-container {
        padding: 0 0.5rem;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    .azbn-card {
        padding: 1rem;
    }
    
    .azbn-skills {
        gap: 0.3rem;
    }
    
    .azbn-tag {
        font-size: 0.7rem;
        padding: 0.2rem 0.6rem;
    }
}