/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* PRIMARY COLORS - Automotive Performance Palette */
    --primary-color: #d97706;           /* Amber Orange - Fuel/Energy */
    --primary-dark: #b45309;            /* Dark Amber - Hover states */
    --primary-light: #fbbf24;           /* Light Amber - Accents */
    
    /* SECONDARY COLORS - Precision & Trust */
    --secondary-color: #0f766e;         /* Deep Teal - Data/Precision */
    --secondary-dark: #0d5f58;          /* Dark Teal - Hover */
    --secondary-light: #14b8a6;         /* Light Teal - Highlights */
    
    /* NEUTRAL COLORS - Premium Automotive */
    --dark: #1c1917;                    /* Deep Charcoal - Main text */
    --dark-secondary: #292524;          /* Secondary charcoal */
    --gray: #57534e;                    /* Warm gray - Secondary text */
    --gray-light: #78716c;              /* Light warm gray */
    --light: #fafaf9;                   /* Warm off-white - Backgrounds */
    --border: #e7e5e4;                  /* Warm border */
    
    /* ACCENT COLORS - Functional States */
    --accent-red: #dc2626;              /* Performance red - Errors */
    --accent-green: #16a34a;            /* Efficiency green - Success */
    --warning-color: #ea580c;           /* Orange warning */
    --success-color: #059669;           /* Emerald success */
    --danger-color: #dc2626;            /* Red danger */
    
    /* EFFECTS & SHADOWS */
    --shadow: 0 4px 6px -1px rgba(217, 119, 6, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(217, 119, 6, 0.15);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
.header {
    background-color: #fff;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--dark);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #d97706 0%, #0f766e 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.hero-features span {
    padding: 0.5rem 1rem;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    font-size: 0.9rem;
}

/* Calculator Section */
.calculator-section {
    padding: 4rem 0;
    background-color: var(--light);
}

.calculator-wrapper {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

/* Calculator Tabs */
.calculator-tabs {
    display: flex;
    background-color: var(--light);
    border-bottom: 2px solid var(--border);
    overflow-x: auto;
}

.tab-btn {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    background-color: transparent;
    cursor: pointer;
    font-weight: 600;
    color: var(--gray);
    transition: var(--transition);
    white-space: nowrap;
}

.tab-btn:hover {
    background-color: rgba(217, 119, 6, 0.1);
    color: var(--primary-color);
}

.tab-btn.active {
    background-color: white;
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
}

/* Tab Content */
.tab-content {
    display: none;
    padding: 2rem;
}

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

.tab-content h2 {
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.calculator-description {
    color: var(--gray);
    margin-bottom: 2rem;
}

/* Form Styles */
.calculator-form {
    margin-bottom: 2rem;
}

.unit-toggle {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background-color: var(--light);
    border-radius: var(--border-radius);
}

.toggle-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    gap: 0.5rem;
}

.toggle-label input[type="radio"] {
    cursor: pointer;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    position: relative;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.form-group input,
.form-group select {
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.1);
}

.unit-label {
    position: absolute;
    right: 0.75rem;
    top: 2.5rem;
    color: var(--gray);
    font-size: 0.9rem;
    pointer-events: none;
}

.get-local-price {
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.875rem;
    transition: var(--transition);
}

.get-local-price:hover {
    background-color: #059669;
}

/* Buttons */
.btn-calculate {
    width: 100%;
    padding: 1rem 2rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-calculate:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    padding: 0.75rem 1.5rem;
    background-color: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Results Container */
.results-container {
    margin-top: 2rem;
    padding: 2rem;
    background-color: var(--light);
    border-radius: var(--border-radius);
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-container h3 {
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.result-card {
    background-color: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.result-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.result-card.primary {
    background: linear-gradient(135deg, #d97706 0%, #0f766e 100%);
    color: white;
}

.result-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.result-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Comparison Badge */
.comparison-badge {
    padding: 1.5rem;
    background-color: white;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--secondary-color);
    margin-bottom: 1.5rem;
}

.comparison-badge p {
    font-weight: 600;
    color: var(--dark);
}

/* Result Actions */
.result-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Vehicle Comparison */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: start;
    margin-bottom: 2rem;
}

.comparison-column {
    background-color: var(--light);
    padding: 1.5rem;
    border-radius: var(--border-radius);
}

.comparison-column h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.comparison-vs {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray);
    display: flex;
    align-items: center;
}

.comparison-form .form-group {
    margin-bottom: 1rem;
}

#comparison-chart {
    min-height: 300px;
    margin-bottom: 2rem;
}

.comparison-summary {
    padding: 1.5rem;
    background-color: white;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--success-color);
}

/* Savings Tips */
.savings-tips {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: white;
    border-radius: var(--border-radius);
}

.savings-tips h4 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.savings-tips ul {
    list-style-position: inside;
    color: var(--gray);
}

.savings-tips li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.savings-tips li:last-child {
    border-bottom: none;
}

/* How It Works Section */
.how-it-works {
    padding: 4rem 0;
    background-color: white;
}

.how-it-works h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    color: var(--dark);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.step-card {
    text-align: center;
    padding: 2rem;
    border-radius: var(--border-radius);
    background-color: var(--light);
    transition: var(--transition);
}

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step-card h3 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.step-card p {
    color: var(--gray);
}

/* FAQ Section */
.faq-section {
    padding: 4rem 0;
    background-color: var(--light);
}

.faq-section h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    color: var(--dark);
}

.faq-grid {
    display: grid;
    gap: 1rem;
}

.faq-item {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background-color: white;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: var(--light);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary-color);
}

.faq-question.active::after {
    content: '−';
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.4s ease-out;
    padding: 0 1.5rem;
}

.faq-answer.active {
    max-height: 1000px;
    padding: 0 1.5rem;
    transition: max-height 0.4s ease-in, padding 0.4s ease-in;
}

.faq-answer-content {
    padding: 1.5rem 0;
    color: var(--gray);
    border-top: 1px solid var(--border);
    line-height: 1.7;
}

/* Footer */
.footer {
    background-color: var(--dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-column h3,
.footer-column h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-column p {
    opacity: 0.8;
    line-height: 1.8;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 0.5rem;
}

.footer-column ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    opacity: 1;
    color: var(--secondary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-features {
        gap: 1rem;
    }

    .calculator-tabs {
        flex-direction: column;
    }

    .tab-btn {
        border-left: 3px solid transparent;
    }

    .tab-btn.active {
        border-bottom: none;
        border-left: 3px solid var(--primary-color);
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
    }

    .comparison-vs {
        justify-content: center;
        padding: 1rem 0;
    }

    .result-actions {
        flex-direction: column;
    }

    .btn-secondary {
        width: 100%;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Educational Context Section */
.educational-context {
    padding: 4rem 0;
    background: var(--light);
}

.context-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.context-main h2 {
    color: var(--dark);
    margin-bottom: 1rem;
}

.context-main p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--gray);
}

.methodology-preview {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-top: 2rem;
}

.methodology-preview h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.methodology-preview ul {
    list-style: none;
    padding: 0;
}

.methodology-preview li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
}

.methodology-preview li:last-child {
    border-bottom: none;
}

.context-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.quick-access, .calculator-benefits {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.quick-access h3, .calculator-benefits h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.quick-access ul, .calculator-benefits ul {
    list-style: none;
    padding: 0;
}

.quick-access li, .calculator-benefits li {
    margin-bottom: 0.5rem;
}

.quick-access a, .calculator-benefits a {
    color: var(--gray);
    text-decoration: none;
    transition: var(--transition);
}

.quick-access a:hover, .calculator-benefits a:hover {
    color: var(--primary-color);
}

/* Methodology Integration Section */
.methodology-integration {
    padding: 4rem 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--dark);
    margin-bottom: 1rem;
}

.section-intro {
    font-size: 1.2rem;
    color: var(--gray);
    max-width: 800px;
    margin: 0 auto;
}

.methodology-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.methodology-main h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.accuracy-factors-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.factor-category {
    background: var(--light);
    padding: 2rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.factor-category h4 {
    color: var(--dark);
    margin-bottom: 1rem;
}

.calculator-advantages {
    margin-top: 3rem;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.advantage-item {
    background: var(--light);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
}

.advantage-item h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.methodology-sidebar {
    background: var(--light);
    padding: 2rem;
    border-radius: var(--border-radius);
    height: fit-content;
}

.resource-navigation h3 {
    color: var(--dark);
    margin-bottom: 1.5rem;
}

.resource-category {
    margin-bottom: 2rem;
}

.resource-category h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.resource-category ul {
    list-style: none;
    padding: 0;
}

.resource-category li {
    margin-bottom: 0.8rem;
}

.resource-category a {
    color: var(--gray);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.resource-category a:hover {
    color: var(--primary-color);
}

.quick-stats {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    margin-top: 2rem;
}

.quick-stats h3 {
    color: var(--dark);
    margin-bottom: 1.5rem;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-item strong {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.stat-item span {
    color: var(--gray);
    font-size: 0.9rem;
}

/* Mathematical Foundation Section */
.mathematical-foundation {
    padding: 4rem 0;
    background: var(--light);
}

.foundation-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.formula-showcase, .standards-overview {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.formula-display {
    background: var(--light);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin: 1.5rem 0;
    font-family: 'Courier New', monospace;
}

.formula-display p {
    margin-bottom: 0.5rem;
    color: var(--dark);
}

/* Link Styles */
.link-primary {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.link-primary:hover {
    color: var(--dark);
}

.link-secondary {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

.link-secondary:hover {
    color: var(--dark);
}

.learn-more-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.learn-more-link:hover {
    color: var(--dark);
}

/* CTA Buttons */
.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.btn-primary {
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
}

/* Guides and Blog Page Styles */
.guides-grid, .blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.guide-card, .blog-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.guide-card:hover, .blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.guide-content, .blog-content {
    padding: 2rem;
}

.guide-category, .blog-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--primary-color);
    color: white;
    font-size: 0.8rem;
    border-radius: 15px;
    margin-bottom: 1rem;
}

.guide-title, .blog-title {
    font-size: 1.3rem;
    color: var(--dark);
    margin-bottom: 1rem;
    line-height: 1.4;
}

.guide-excerpt, .blog-excerpt {
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.guide-meta, .blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--gray);
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--dark);
}

/* Page Header */
.page-header {
    padding: 4rem 0;
    background: linear-gradient(135deg, #d97706 0%, #0f766e 100%);
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Responsive Design Updates */
@media (max-width: 768px) {
    .context-grid,
    .methodology-grid,
    .foundation-grid,
    .accuracy-factors-preview,
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .methodology-main h3 {
        font-size: 1.5rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .guides-grid, .blog-grid {
        grid-template-columns: 1fr;
    }
}

/* Additional Styles for Guides and Blog Pages */
.main-content {
    padding: 2rem 0;
}

.guides-intro, .blog-intro {
    text-align: center;
    margin-bottom: 4rem;
}

.intro-content h2 {
    font-size: 2.5rem;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

.intro-content p {
    font-size: 1.2rem;
    color: var(--gray);
    max-width: 800px;
    margin: 0 auto 3rem;
}

.learning-path {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.path-step {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.step-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    line-height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.path-step h3 {
    color: var(--dark);
    margin-bottom: 1rem;
}

.path-step p {
    color: var(--gray);
    font-size: 0.95rem;
}

.quick-start, .content-categories {
    margin: 4rem 0;
    padding: 4rem 0;
    background: var(--light);
}

.quick-start-content h2, .content-categories h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: var(--dark);
}

.recommendation-grid, .categories-grid, .resources-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.recommendation-card, .category-item, .resource-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.recommendation-card h3, .category-item h3, .resource-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.recommendation-card p, .category-item p, .resource-card p {
    color: var(--gray);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.category-item ul {
    list-style: none;
    padding: 0;
    margin-top: 1rem;
}

.category-item li {
    padding: 0.5rem 0;
    color: var(--gray);
    border-bottom: 1px solid var(--border);
}

.category-item li:last-child {
    border-bottom: none;
}

.methodology-note {
    background: var(--primary-color);
    color: white;
    padding: 3rem 0;
    margin: 4rem 0;
}

.methodology-content {
    text-align: center;
}

.methodology-content h2 {
    margin-bottom: 2rem;
}

.methodology-content ul {
    list-style: none;
    padding: 0;
    max-width: 800px;
    margin: 2rem auto;
    text-align: left;
}

.methodology-content li {
    padding: 0.5rem 0;
    margin-bottom: 1rem;
}

.featured-post {
    background: linear-gradient(135deg, #d97706 0%, #0f766e 100%);
    color: white;
    padding: 3rem;
    border-radius: var(--border-radius);
    margin-bottom: 4rem;
}

.featured-content h2 {
    margin-bottom: 1.5rem;
}

.featured-excerpt {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.featured-meta {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.featured-meta .read-more {
    background: white;
    color: var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.featured-meta .read-more:hover {
    background: var(--light);
}

.newsletter-signup {
    background: var(--light);
    padding: 4rem 0;
    text-align: center;
}

.newsletter-content h2 {
    margin-bottom: 1rem;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.newsletter-form input {
    flex: 1;
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    font-size: 1rem;
}

.newsletter-form button {
    padding: 1rem 2rem;
    white-space: nowrap;
}

.privacy-note {
    font-size: 0.9rem;
    color: var(--gray);
    margin-top: 1rem;
}

.resource-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.resource-link:hover {
    color: var(--dark);
}

.blog-resources {
    margin: 4rem 0;
}

.blog-resources h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    color: var(--dark);
}

/* Navigation Active State */
.nav-menu a.active {
    color: var(--primary-color);
    font-weight: 600;
}

/* Article Meta Styling */
.article-meta {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin: 1rem 0;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.article-meta span {
    color: var(--gray);
    font-size: 0.9rem;
}

.category {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
}

/* Article Lead Styling */
.lead {
    font-size: 1.2rem;
    line-height: 1.6;
    color: var(--gray);
    margin: 1.5rem 0;
    font-weight: 400;
}

/* Content Section Spacing */
.content-section {
    margin: 3rem 0;
}

.content-section h2 {
    color: var(--dark);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.content-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    margin-top: 2rem;
    font-size: 1.4rem;
}

/* Implementation Steps Enhancement */
.implementation-steps {
    display: grid;
    gap: 2rem;
    margin: 2rem 0;
}

.step-phase {
    background: var(--light);
    padding: 2rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.step-phase h4 {
    color: var(--dark);
    margin-bottom: 1rem;
}

.step-phase ul {
    list-style: none;
    padding: 0;
}

.step-phase li {
    margin-bottom: 0.8rem;
    padding-left: 1rem;
    position: relative;
}

.step-phase li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

/* Calculation Examples Enhancement */
.calculation-example {
    background: var(--light);
    padding: 2rem;
    border-radius: var(--border-radius);
    margin: 2rem 0;
    border: 2px solid var(--primary-color);
}

.calculation-example h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.calculation-example pre {
    background: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    margin: 1rem 0;
    font-family: 'Courier New', monospace;
    color: var(--dark);
    overflow-x: auto;
}

/* Quality Metrics Styling */
.quality-metrics {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin: 2rem 0;
}

.quality-metrics h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Mobile Responsive for New Pages */
@media (max-width: 768px) {
    .learning-path,
    .recommendation-grid,
    .categories-grid,
    .resources-grid {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .featured-meta {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .intro-content h2 {
        font-size: 2rem;
    }
    
    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .implementation-steps {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    .header,
    .hero,
    .calculator-tabs,
    .calculator-form,
    .result-actions,
    .footer {
        display: none;
    }

    .results-container {
        box-shadow: none;
        border: 2px solid var(--border);
    }
}

/* Why Choose Us Page Styles */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background-color: white;
    box-shadow: var(--shadow);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.comparison-table thead {
    background-color: var(--primary-color);
    color: white;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.comparison-table th {
    font-weight: 600;
}

.comparison-table tbody tr:hover {
    background-color: var(--light);
}

.comparison-table .check {
    color: #27ae60;
    font-weight: 600;
}

.comparison-table .cross {
    color: #e74c3c;
    font-weight: 600;
}

.comparison-table .partial {
    color: #f39c12;
    font-weight: 600;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.feature-card {
    background-color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.ux-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.ux-item {
    padding: 1.5rem;
    background-color: var(--light);
    border-radius: var(--border-radius);
}

.ux-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.audience-item {
    background-color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.audience-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.source-list {
    list-style: none;
    padding: 0;
}

.source-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

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

.cta-box {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem;
    border-radius: var(--border-radius);
    text-align: center;
    margin: 3rem 0;
}

.cta-box h2 {
    color: white;
    margin-bottom: 1rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.cta-note {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-top: 1rem;
}

@media (max-width: 768px) {
    .comparison-table {
        font-size: 0.85rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.75rem 0.5rem;
    }
    
    .feature-grid,
    .ux-features,
    .audience-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-box {
        padding: 2rem 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
}