/* CSS Variables */
:root {
    --primary-color: #1a472a;
    --secondary-color: #2d5a3d;
    --accent-color: #4caf50;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #f8f9fa;
    --white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 20px rgba(0,0,0,0.15);
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    --mpesa-green: #00b04f;
    --airtel-red: #dc143c;
    --visa-blue: #1a1f71;
    --mastercard-orange: #ff5f00;
    --bitcoin-orange: #f7931a;
    --ethereum-purple: #627eea;
    --tether-green: #26a17b;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

/* Header styles */
.main-header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo-link {
    text-decoration: none;
}

.site-logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.site-title {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
    margin: 0;
}

.main-navigation .nav-menu {
    display: flex;
    list-style: none;
    gap: 1.6rem;
}

.nav-item {
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover,
.nav-item.active .nav-link {
    color: var(--primary-color);
}

.current-page {
    color: var(--primary-color);
    font-weight: 600;
    cursor: default;
}

.dropdown-arrow {
    font-size: 0.8rem;
    transition: var(--transition);
    color: var(--text-light);
}

.has-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
    color: var(--primary-color);
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    border-radius: var(--border-radius);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

.dropdown-menu li {
    list-style: none;
}

.dropdown-menu a {
    display: block;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--text-color);
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* Breadcrumb */
.breadcrumb-section {
    background: var(--bg-color);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-nav {
    font-size: 0.9rem;
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
}

.breadcrumb-list li:not(:last-child)::after {
    content: "›";
    margin-left: 0.5rem;
    color: var(--text-light);
}

.breadcrumb-list a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb-list a:hover {
    color: var(--primary-color);
}

.breadcrumb-list .current {
    color: var(--primary-color);
    font-weight: 600;
}

/* Payments Hero Section */
.payments-hero-section {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 4rem 0;
    overflow: hidden;
}

.payments-hero-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    font-weight: bold;
}

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

.hero-highlights {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255,255,255,0.1);
    padding: 0.75rem 1rem;
    border-radius: 25px;
    backdrop-filter: blur(10px);
}

.highlight-icon {
    font-size: 1.2rem;
}

.highlight-text {
    font-weight: 600;
    font-size: 0.9rem;
}

/* Hero Payment Icons */
.hero-payment-icons {
    background: var(--white);
    color: var(--text-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
}

.hero-payment-icons h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    text-align: center;
}

.payment-icons-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.payment-icon-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.payment-icon-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.payment-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.payment-icon-item span {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-color);
    text-align: center;
}

/* Payment Categories Section */
.payment-categories-section {
    padding: 4rem 0;
    background: var(--white);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.section-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto 3rem;
}

.category-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-color);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-color);
    color: var(--white);
    border-color: var(--accent-color);
}

.payment-methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.payment-method-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    border: 2px solid transparent;
}

.payment-method-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.payment-method-card.featured {
    border-color: var(--mpesa-green);
    position: relative;
}

.payment-method-card.featured::before {
    content: "Most Popular";
    position: absolute;
    top: 0;
    right: 0;
    background: var(--mpesa-green);
    color: var(--white);
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    font-weight: bold;
    border-bottom-left-radius: var(--border-radius);
}

.payment-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.payment-logo {
    width: 50px;
    height: 50px;
    object-fit: contain;
    flex-shrink: 0;
}

.payment-info {
    flex: 1;
}

.payment-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
    font-size: 1.3rem;
}

.payment-info p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.popularity-badge {
    background: var(--mpesa-green);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: bold;
}

.new-badge {
    background: var(--bitcoin-orange);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: bold;
}

.payment-features {
    padding: 1.5rem;
}

.feature-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.feature-row:last-child {
    border-bottom: none;
}

.feature-label {
    font-weight: 600;
    color: var(--text-color);
}

.feature-value {
    color: var(--accent-color);
    font-weight: 600;
}

.payment-pros-cons {
    padding: 1.5rem;
    background: var(--bg-color);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.pros h4,
.cons h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.pros ul,
.cons ul {
    list-style: none;
    padding: 0;
}

.pros li,
.cons li {
    padding: 0.25rem 0;
    font-size: 0.9rem;
    color: var(--text-light);
    position: relative;
    padding-left: 1rem;
}

.pros li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.cons li::before {
    content: "✗";
    position: absolute;
    left: 0;
    color: #e74c3c;
    font-weight: bold;
}

.supported-platforms {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.supported-platforms h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.platform-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.platform-tag {
    background: var(--accent-color);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Payment Comparison Section */
.payment-comparison-section {
    padding: 4rem 0;
    background: var(--bg-color);
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin-top: 3rem;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

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

.comparison-table th {
    background: var(--primary-color);
    color: var(--white);
    font-weight: 600;
    font-size: 0.9rem;
}

.comparison-table .featured-row {
    background: #f8fff8;
    border-left: 4px solid var(--mpesa-green);
}

.method-cell {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.table-icon {
    width: 30px;
    height: 30px;
    object-fit: contain;
}

.instant-badge {
    background: var(--accent-color);
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: bold;
}

.medium-badge {
    background: #ff9800;
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: bold;
}

.slow-badge {
    background: #f44336;
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: bold;
}

.available-badge {
    background: var(--accent-color);
    color: var(--white);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: bold;
}

.popularity-high {
    color: #ffc107;
}

.popularity-medium {
    color: #ff9800;
}

.popularity-low {
    color: #9e9e9e;
}

/* Payment Guides Section */
.payment-guides-section {
    padding: 4rem 0;
    background: var(--white);
}

.guides-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 3rem;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    padding: 0.25rem;
    box-shadow: var(--shadow);
    justify-content: center;
    flex-wrap: wrap;
}

.guide-tab {
    flex: 1;
    padding: 1rem;
    background: transparent;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    color: var(--text-light);
    min-width: 150px;
}

.guide-tab.active {
    background: var(--accent-color);
    color: var(--white);
    box-shadow: var(--shadow);
}

.guide-content {
    display: none;
    background: var(--bg-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    max-width: 1000px;
    margin: 0 auto;
}

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

.guide-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--border-radius);
}

.guide-icon {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.guide-icons {
    display: flex;
    gap: 0.5rem;
}

.guide-header h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.guide-steps {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.guide-step {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.step-content p {
    color: var(--text-light);
    line-height: 1.6;
}

.guide-tips {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-color);
}

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

.guide-tips ul {
    list-style: none;
    padding: 0;
}

.guide-tips li {
    padding: 0.5rem 0;
    color: var(--text-light);
    position: relative;
    padding-left: 1.5rem;
}

.guide-tips li::before {
    content: "💡";
    position: absolute;
    left: 0;
    font-size: 0.9rem;
}

/* Payment Security Section */
.payment-security-section {
    padding: 4rem 0;
    background: var(--bg-color);
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

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

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

.security-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.security-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.security-card p {
    color: var(--text-light);
    line-height: 1.6;
}

.security-tips {
    margin-top: 3rem;
    padding: 2rem;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.security-tips h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    text-align: center;
}

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

.tip-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-color);
    border-radius: var(--border-radius);
}

.tip-icon {
    font-size: 1.2rem;
    color: var(--accent-color);
}

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

.faq-container {
    max-width: 800px;
    margin: 2rem auto 0;
}

.faq-item {
    background: var(--bg-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
}

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

.faq-icon {
    font-size: 1.5rem;
    transition: var(--transition);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-light);
    display: none;
}

.faq-question[aria-expanded="true"] + .faq-answer {
    display: block;
}

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

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--accent-color);
}

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

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

.footer-section a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.2);
    padding-top: 1rem;
    text-align: center;
}

.disclaimer {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 0.5rem;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
    justify-content: center;
}

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

.btn-primary:hover {
    background: #45a049;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-outline {
    background: var(--white);
    color: var(--primary-color);
    border-color: var(--primary-color);
    border-width: 2px;
    box-shadow: var(--shadow);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-icon {
    font-size: 1rem;
}

/* Hidden class for filtering */
.hidden {
    display: none !important;
}

/* Responsive Design */
@media (max-width: 1000px) {
    .main-navigation {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .payments-hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .payment-icons-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .payment-methods-grid {
        grid-template-columns: 1fr;
    }
    
    .payment-pros-cons {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .security-grid {
        grid-template-columns: 1fr;
    }
    
    .category-filters {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .filter-btn {
        width: 200px;
    }
    
    .guides-tabs {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .guide-tab {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-highlights {
        flex-direction: column;
        gap: 1rem;
    }
    
    .payment-icons-grid {
        grid-template-columns: 1fr;
    }
    
    .site-title {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-payment-icons {
        padding: 1.5rem;
    }
    
    .guide-step {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .comparison-table-wrapper {
        margin: 0 -20px;
        border-radius: 0;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile menu styles */
@media (max-width: 1000px) {
    .main-navigation.active {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: var(--white);
        z-index: 9999;
        padding: 2rem;
        overflow-y: auto;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0;
    }
    
    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-link {
        padding: 1rem 0;
        width: 100%;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: var(--bg-color);
        margin-left: 1rem;
        display: none;
    }
    
    .has-dropdown.mobile-dropdown-open .dropdown-menu {
        display: block;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* Animation for filtered results */
.payment-method-card {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.payment-method-card.fade-in {
    animation: fadeInUp 0.5s ease-in-out;
}

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

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Print styles */
@media print {
    .main-header,
    .main-footer {
        display: none;
    }
    
    .payment-method-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}