/**
 * LARK Labs - Unit Pages SEO Optimization Styles
 * Week 2 SEO Enhancement for Gas Trade Training Unit Pages
 * Adds consistent styling for breadcrumbs, unit headers, CTAs, and disclaimers
 */

/* ===============================================
   BREADCRUMB NAVIGATION
   =============================================== */
.breadcrumb-nav {
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 8px 8px 0 0;
    font-size: 14px;
    color: #666;
    margin-bottom: 0;
}

.breadcrumb-nav a {
    color: #0066cc;
    text-decoration: none;
    transition: color 0.3s;
}

.breadcrumb-nav a:hover {
    color: #004080;
    text-decoration: underline;
}

.breadcrumb-nav span {
    color: #2c3e50;
    font-weight: 500;
}

/* ===============================================
   UNIT HEADER SECTION
   =============================================== */
.unit-header-section {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(249, 249, 249, 0.98));
    border-radius: 0 0 15px 15px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    text-align: left;
}

.unit-header-section h1 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 2.2em;
}

.unit-subtitle {
    color: #667eea;
    font-size: 1.3em;
    font-weight: 600;
    margin-bottom: 25px;
}

.unit-intro-content {
    margin: 25px 0;
}

.lead-text {
    font-size: 1.15em;
    line-height: 1.7;
    color: #34495e;
    margin-bottom: 20px;
}

/* ===============================================
   BADGES
   =============================================== */
.certification-badge,
.code-compliance-badge {
    display: inline-block;
    margin: 10px 15px 10px 0;
    padding: 12px 20px;
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    border-left: 5px solid #4caf50;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    color: #2e7d32;
}

.code-compliance-badge {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-left-color: #2196f3;
    color: #1565c0;
}

/* ===============================================
   UNIT COVERAGE & EXAM RELEVANCE
   =============================================== */
.unit-coverage,
.exam-relevance,
.study-tips {
    background: white;
    padding: 25px;
    border-radius: 12px;
    margin: 25px 0;
    border: 1px solid #e0e0e0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    text-align: left;
}

.unit-coverage h3,
.exam-relevance h3,
.study-tips h3 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 1.4em;
}

.chapter-list {
    list-style: none;
    padding-left: 0;
}

.chapter-list li {
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    line-height: 1.6;
}

.chapter-list li:last-child {
    border-bottom: none;
}

.chapter-list li strong {
    color: #667eea;
    font-weight: 600;
}

.exam-relevance ul {
    list-style: none;
    padding-left: 0;
}

.exam-relevance ul li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
}

.exam-relevance ul li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #4caf50;
    font-weight: bold;
    font-size: 1.2em;
}

.study-tips ol {
    padding-left: 20px;
    line-height: 1.8;
}

.study-tips ol li {
    margin-bottom: 10px;
    color: #34495e;
}

/* ===============================================
   UNIT FOOTER SECTIONS
   =============================================== */
.unit-footer-sections {
    margin-top: 50px;
    text-align: left;
}

/* Related Units Section */
.related-units {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: 40px 30px;
    border-radius: 15px;
    margin-bottom: 40px;
    text-align: left;
}

.related-units h3 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.8em;
}

.related-units-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.related-unit-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    border: 2px solid #e0e0e0;
    transition: all 0.3s ease;
    text-align: center;
}

.related-unit-card:hover {
    border-color: #667eea;
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.15);
}

.related-unit-card h4 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 1.1em;
}

.related-unit-card a {
    color: #0066cc;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1em;
    display: block;
    margin-bottom: 10px;
}

.related-unit-card a:hover {
    color: #004080;
    text-decoration: underline;
}

.related-unit-card p {
    color: #666;
    font-size: 0.95em;
    line-height: 1.5;
}

.view-all-units {
    text-align: center;
    margin-top: 30px;
}

/* Next Steps CTA Section */
.next-steps-cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 50px 30px;
    border-radius: 15px;
    color: white;
    margin-bottom: 40px;
}

.next-steps-cta h3 {
    color: white;
    text-align: center;
    margin-bottom: 35px;
    font-size: 2em;
}

.cta-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.cta-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 12px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    transition: all 0.3s ease;
}

.cta-card:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-5px);
}

.cta-card h4 {
    color: white;
    margin-bottom: 15px;
    font-size: 1.3em;
}

.cta-card p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
    line-height: 1.6;
}

/* Study Resources Section */
.study-resources {
    background: white;
    padding: 35px;
    border-radius: 15px;
    border: 2px solid #e0e0e0;
    margin-bottom: 40px;
    text-align: left;
}

.study-resources h3 {
    color: #2c3e50;
    margin-bottom: 25px;
    font-size: 1.6em;
}

.study-resources ul {
    list-style: none;
    padding-left: 0;
}

.study-resources ul li {
    padding: 12px 0;
    padding-left: 30px;
    border-bottom: 1px solid #f0f0f0;
    position: relative;
}

.study-resources ul li:before {
    content: "📚";
    position: absolute;
    left: 0;
    font-size: 1.2em;
}

.study-resources ul li a {
    color: #0066cc;
    text-decoration: none;
    font-weight: 500;
}

.study-resources ul li a:hover {
    color: #004080;
    text-decoration: underline;
}

/* Unit Disclaimer */
.unit-disclaimer {
    margin-bottom: 30px;
    text-align: left;
}

.unit-disclaimer h3 {
    color: #e74c3c;
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.6em;
}

.disclaimer-box {
    background: #fff3cd;
    border-left: 5px solid #ffc107;
    border-radius: 8px;
    padding: 30px;
    line-height: 1.8;
}

.disclaimer-box p {
    margin-bottom: 15px;
    color: #856404;
}

.disclaimer-box p:last-child {
    margin-bottom: 0;
}

.disclaimer-box strong {
    color: #533f03;
}

.creator-credit {
    font-style: italic;
    border-top: 1px solid #f0ad4e;
    padding-top: 15px;
    margin-top: 15px;
}

.copyright {
    font-size: 0.9em;
    text-align: center;
    color: #6c757d;
}

/* ===============================================
   BUTTONS
   =============================================== */
.btn-primary,
.btn-secondary,
.btn-large-primary,
.btn-large-secondary {
    display: inline-block;
    padding: 14px 28px;
    margin: 8px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary,
.btn-large-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover,
.btn-large-primary:hover {
    background: linear-gradient(135deg, #5568d3 0%, #65398b 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary,
.btn-large-secondary {
    background: #6c757d;
    color: white;
    box-shadow: 0 4px 15px rgba(108, 117, 125, 0.3);
}

.btn-secondary:hover,
.btn-large-secondary:hover {
    background: #545b62;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(108, 117, 125, 0.4);
}

.btn-large-primary,
.btn-large-secondary {
    padding: 18px 40px;
    font-size: 1.15em;
}

/* ===============================================
   TRAINING NAVIGATION
   =============================================== */
.training-navigation {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    padding: 15px 25px;
    text-align: center;
    border-radius: 8px;
    margin-bottom: 20px;
}

.training-navigation a {
    color: white;
    text-decoration: none;
    padding: 8px 15px;
    margin: 0 5px;
    border-radius: 5px;
    transition: all 0.3s;
    display: inline-block;
}

.training-navigation a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* ===============================================
   RESPONSIVE DESIGN
   =============================================== */
@media (max-width: 768px) {
    .unit-header-section {
        padding: 20px;
    }

    .unit-header-section h1 {
        font-size: 1.8em;
    }

    .unit-subtitle {
        font-size: 1.1em;
    }

    .related-units-grid,
    .cta-options {
        grid-template-columns: 1fr;
    }

    .certification-badge,
    .code-compliance-badge {
        display: block;
        margin: 10px 0;
    }

    .btn-primary,
    .btn-secondary {
        display: block;
        margin: 10px 0;
    }

    .training-navigation {
        font-size: 0.9em;
    }

    .training-navigation a {
        display: block;
        margin: 5px 0;
    }
}

@media (max-width: 480px) {
    .unit-header-section h1 {
        font-size: 1.5em;
    }

    .breadcrumb-nav {
        font-size: 12px;
        padding: 10px 15px;
    }

    .unit-coverage,
    .exam-relevance,
    .study-tips {
        padding: 20px;
    }
}

/* ===============================================
   PRINT STYLES
   =============================================== */
@media print {
    .training-navigation,
    .cta-options,
    .next-steps-cta {
        display: none;
    }

    .unit-header-section {
        background: white;
        box-shadow: none;
    }
}