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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 18px;
    line-height: 1.7;
    color: #141414;
    background-color: #F8F9FA;
}

/* Container and Layout */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 64px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 24px;
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
}

h1 {
    font-size: 56px;
}

h2 {
    font-size: 40px;
}

h3 {
    font-size: 24px;
    font-weight: 600;
}

p {
    margin-bottom: 16px;
}

/* Navigation */
.navbar {
    background: #FFFFFF;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: #141414;
}

.logo-text {
    color: #141414;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    background: none;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    cursor: pointer;
    transition: background 200ms ease, border-color 200ms ease;
}

.menu-toggle:focus-visible {
    outline: 3px solid rgba(0, 87, 255, 0.35);
    outline-offset: 2px;
}

.menu-toggle:hover {
    background: rgba(0, 87, 255, 0.08);
    border-color: rgba(0, 87, 255, 0.35);
}

.menu-bar {
    height: 2px;
    width: 20px;
    background: #141414;
    border-radius: 999px;
    margin: 0 auto;
    transition: transform 200ms ease, opacity 200ms ease;
}

.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.nav-link {
    color: #6C757D;
    text-decoration: none;
    font-weight: 500;
    transition: color 250ms ease;
}

.nav-link:hover {
    color: #0057FF;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: calc(100% + 16px);
        right: 0;
        left: 0;
        flex-direction: column;
        gap: 16px;
        background: #FFFFFF;
        padding: 24px 24px 32px;
        border-radius: 16px;
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
        border: 1px solid rgba(0, 0, 0, 0.05);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-link {
        font-size: 18px;
        padding: 8px 0;
    }
}

/* Hero Section */
.hero {
    background: #F8F9FA;
    padding: 96px 0;
    text-align: center;
    min-height: 520px;
    display: flex;
    align-items: center;
}

.hero-title {
    color: #141414;
    margin-bottom: 24px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    color: #6C757D;
    font-size: 20px;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Buttons */
.cta-button,
.enroll-button,
.submit-button {
    background: #0057FF;
    color: #FFFFFF;
    border: none;
    padding: 16px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 250ms cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.cta-button:hover,
.enroll-button:hover,
.submit-button:hover {
    background: #0043C7;
    transform: translateY(-2px);
}

.cta-button:active,
.enroll-button:active,
.submit-button:active {
    background: #0043C7;
    transform: translateY(0px) scale(0.98);
}

/* Sections */
.section {
    padding: 96px 0;
}

.section-title {
    text-align: center;
    color: #141414;
    margin-bottom: 64px;
}

/* Course Cards */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 48px;
    max-width: 1200px;
    margin: 0 auto;
}

.course-card {
    background: #FFFFFF;
    border-radius: 16px;
    padding: 0;
    box-shadow: 0 4px 12px rgba(0, 87, 255, 0.08);
    transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.course-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 32px rgba(0, 87, 255, 0.15);
}

.course-image {
    width: 100%;
    height: 200px;
}

.course-content {
    padding: 32px;
}

.course-title {
    color: #141414;
    margin-bottom: 16px;
}

.course-description {
    color: #6C757D;
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 24px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-details {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.course-duration,
.course-level {
    background: #EBF2FF;
    color: #0057FF;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.course-price {
    font-size: 20px;
    font-weight: 600;
    color: #141414;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.feature h3 {
    margin-bottom: 8px;
    color: #141414;
}

.feature p {
    color: #6C757D;
    font-size: 16px;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.stat {
    text-align: center;
    padding: 24px;
    background: #FFFFFF;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 87, 255, 0.08);
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: #0057FF;
    margin-bottom: 8px;
}

.stat-label {
    color: #6C757D;
    font-size: 14px;
    font-weight: 500;
}

@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .about-stats {
        flex-direction: row;
        gap: 16px;
    }
}

@media (max-width: 768px) {
    .courses-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .about-stats {
        flex-direction: column;
    }
    
    h1 {
        font-size: 40px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .section-title {
        font-size: 32px;
    }
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h3 {
    color: #141414;
    margin-bottom: 16px;
}

.contact-info p {
    color: #6C757D;
    margin-bottom: 32px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #6C757D;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    position: relative;
}

.form-input {
    width: 100%;
    height: 56px;
    padding: 0 16px;
    border: 1px solid #E9ECEF;
    border-radius: 8px;
    background: #FFFFFF;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 200ms ease-out, box-shadow 200ms ease-out;
}

.form-input:focus {
    outline: none;
    border: 2px solid #0057FF;
    box-shadow: 0 0 0 3px rgba(0, 87, 255, 0.1);
}

.form-textarea {
    height: auto;
    padding: 16px;
    resize: vertical;
    min-height: 120px;
}

.submit-button {
    width: 100%;
}

@media (max-width: 768px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: #FFFFFF;
    border-radius: 16px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid #E9ECEF;
}

.modal-header h3 {
    margin: 0;
    color: #141414;
}

.close-button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: #6C757D;
    transition: color 200ms ease;
}

.close-button:hover {
    color: #141414;
}

.modal-body {
    padding: 24px;
}

.course-summary {
    text-align: center;
    margin-bottom: 24px;
    padding: 16px;
    background: #EBF2FF;
    border-radius: 8px;
}

.course-summary h4 {
    color: #0057FF;
    margin-bottom: 8px;
}

.course-summary p {
    font-size: 24px;
    font-weight: 700;
    color: #141414;
    margin: 0;
}

.order-total {
    text-align: center;
    font-size: 18px;
    margin: 24px 0;
    color: #141414;
}

/* Success Message */
.success-message {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1001;
    justify-content: center;
    align-items: center;
}

.success-content {
    background: #FFFFFF;
    border-radius: 16px;
    padding: 48px;
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.success-content svg {
    margin-bottom: 24px;
}

.success-content h3 {
    color: #198754;
    margin-bottom: 16px;
}

.success-content p {
    color: #6C757D;
    margin-bottom: 32px;
}

.success-button {
    background: #198754;
    color: #FFFFFF;
    border: none;
    padding: 16px 32px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 250ms ease;
}

.success-button:hover {
    background: #157347;
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: #141414;
    color: #FFFFFF;
    padding: 64px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-info .logo {
    color: #FFFFFF;
    margin-bottom: 16px;
}

.footer-info p {
    color: #6C757D;
}

.footer-links h4 {
    color: #FFFFFF;
    margin-bottom: 16px;
    font-size: 18px;
}

.footer-links a,
.footer-links span {
    display: block;
    color: #6C757D;
    text-decoration: none;
    margin-bottom: 8px;
    transition: color 200ms ease;
}

.footer-links a:hover {
    color: #0057FF;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #333;
}

.footer-bottom p {
    color: #6C757D;
    margin: 0;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Form Validation Styles */
.form-input.error {
    border-color: #DC3545;
}

.form-input.success {
    border-color: #198754;
}

.error-message {
    color: #DC3545;
    font-size: 14px;
    margin-top: 4px;
    display: none;
}

.error-message.show {
    display: block;
}

.addon-selection.error,
.payment-methods.error {
    outline: 2px solid rgba(220, 53, 69, 0.3);
    outline-offset: 6px;
    border-radius: 12px;
}

.addon-selection .error-message,
.payment-methods .error-message {
    margin-top: 12px;
}

/* Stripe Payment Styles */
.payment-methods {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
}

.payment-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border: 2px solid #E9ECEF;
    border-radius: 8px;
    cursor: pointer;
    transition: all 200ms ease;
    background: #FFFFFF;
}

.payment-option:hover {
    border-color: #0057FF;
    background: #EBF2FF;
}

.payment-option input[type="radio"] {
    margin: 0;
    width: 18px;
    height: 18px;
    accent-color: #0057FF;
}

.payment-option input[type="radio"]:checked + .payment-label {
    color: #0057FF;
    font-weight: 600;
}

.payment-option input[type="radio"]:checked ~ .payment-option {
    border-color: #0057FF;
    background: #EBF2FF;
}

.stripe-payment-form {
    margin: 24px 0;
    padding: 24px;
    background: #F8F9FA;
    border-radius: 12px;
    border: 1px solid #E9ECEF;
}

.stripe-payment-form h4 {
    color: #141414;
    margin-bottom: 16px;
    font-size: 18px;
}

.stripe-card-element {
    padding: 16px;
    border: 2px solid #E9ECEF;
    border-radius: 8px;
    background: #FFFFFF;
    transition: border-color 200ms ease;
}

.StripeElement--focus {
    border-color: #0057FF !important;
    box-shadow: 0 0 0 3px rgba(0, 87, 255, 0.1);
}

.StripeElement--invalid {
    border-color: #DC3545;
}

.stripe-errors {
    color: #DC3545;
    font-size: 14px;
    margin-top: 8px;
    min-height: 20px;
}

.bank-transfer-info {
    margin: 24px 0;
    padding: 24px;
    background: #F8F9FA;
    border-radius: 12px;
    border: 1px solid #E9ECEF;
}

.bank-transfer-info h4 {
    color: #141414;
    margin-bottom: 16px;
    font-size: 18px;
}

.bank-details {
    color: #141414;
    line-height: 1.6;
}

.bank-details p {
    margin-bottom: 8px;
    font-size: 16px;
}

.bank-details p:last-child {
    margin-bottom: 0;
    font-style: italic;
    color: #6C757D;
}

.bank-details strong {
    color: #141414;
}

/* Form Label Styles */
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #141414;
    font-size: 16px;
}

/* Loading state for Stripe */
.stripe-loading {
    opacity: 0.7;
    pointer-events: none;
}

.stripe-loading .stripe-card-element {
    background: #F8F9FA;
}

/* Mobile Responsiveness for Payment */
@media (max-width: 768px) {
    .payment-methods {
        gap: 8px;
    }
    
    .payment-option {
        padding: 10px 12px;
    }
    
    .stripe-payment-form,
    .bank-transfer-info {
        margin: 16px 0;
        padding: 16px;
    }
}

/* Course Hero Section */
.course-hero {
    background: linear-gradient(135deg, #0057FF 0%, #0043C7 100%);
    color: #FFFFFF;
    padding: 80px 0;
    text-align: center;
    position: relative;
}

.devops-hero {
    background: linear-gradient(135deg, #198754 0%, #146c43 100%);
}

.course-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
    pointer-events: none;
}

.course-hero-content {
    position: relative;
    z-index: 2;
}

.breadcrumb {
    font-size: 14px;
    margin-bottom: 24px;
    opacity: 0.8;
}

.breadcrumb a {
    color: #FFFFFF;
    text-decoration: none;
    transition: opacity 200ms ease;
}

.breadcrumb a:hover {
    opacity: 0.7;
}

.course-hero-title {
    color: #FFFFFF;
    margin-bottom: 24px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.course-hero-subtitle {
    font-size: 20px;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
    line-height: 1.5;
}

.course-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 24px;
    max-width: 800px;
    margin: 0 auto 48px;
    padding: 0 24px;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.meta-label {
    font-size: 14px;
    opacity: 0.8;
    font-weight: 500;
}

.meta-value {
    font-size: 18px;
    font-weight: 600;
}

.course-price {
    color: #FFD700;
    font-size: 24px;
}

.course-hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.secondary-button {
    background: transparent;
    color: #FFFFFF;
    border: 2px solid #FFFFFF;
    padding: 16px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 250ms ease;
}

.secondary-button:hover {
    background: #FFFFFF;
    color: #0057FF;
    transform: translateY(-2px);
}

/* Course Overview */
.overview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.overview-text h2 {
    text-align: left;
    margin-bottom: 24px;
}

.overview-text p {
    font-size: 18px;
    line-height: 1.7;
    color: #6C757D;
    margin-bottom: 32px;
}

.overview-highlights {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.highlight {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.highlight h3 {
    margin-bottom: 8px;
    color: #141414;
}

.highlight p {
    color: #6C757D;
    font-size: 16px;
    margin-bottom: 0;
}

.overview-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

/* Curriculum Section */
.curriculum-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.curriculum-week {
    background: #FFFFFF;
    padding: 32px;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: all 300ms ease;
}

.curriculum-week:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.week-header {
    margin-bottom: 24px;
}

.week-number {
    display: inline-block;
    background: #0057FF;
    color: #FFFFFF;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.week-header h3 {
    color: #141414;
    margin-bottom: 0;
}

.week-topics {
    list-style: none;
    padding: 0;
}

.week-topics li {
    color: #6C757D;
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
}

.week-topics li::before {
    content: '•';
    color: #0057FF;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Free Addons Section */
.free-addons {
    background: #FFFFFF;
}

.section-subtitle {
    text-align: center;
    color: #6C757D;
    font-size: 18px;
    margin-bottom: 48px;
}

.addons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

.addon-card {
    background: #F8F9FA;
    border: 2px solid #E9ECEF;
    border-radius: 16px;
    padding: 32px;
    transition: all 300ms ease;
}

.addon-card:hover {
    border-color: #0057FF;
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 87, 255, 0.1);
}

.addon-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.addon-header h3 {
    color: #141414;
    margin-bottom: 0;
}

.addon-price {
    background: #198754;
    color: #FFFFFF;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
}

.addon-content p {
    color: #6C757D;
    font-size: 16px;
    margin-bottom: 24px;
    line-height: 1.6;
}

.addon-features {
    list-style: none;
    padding: 0;
}

.addon-features li {
    color: #141414;
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.addon-features li::before {
    content: '✓';
    color: #198754;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Enrollment Section */
.enrollment-section {
    background: #F8F9FA;
}

.enrollment-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    max-width: 1200px;
    margin: 0 auto;
}

.enrollment-info h3 {
    color: #141414;
    margin-bottom: 24px;
}

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

.benefits-list li {
    color: #6C757D;
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
}

.benefits-list li::before {
    content: '✓';
    color: #198754;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.pricing-card {
    background: #FFFFFF;
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border: 1px solid #E9ECEF;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid #E9ECEF;
}

.pricing-header h3 {
    color: #141414;
    margin-bottom: 16px;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.currency {
    font-size: 24px;
    color: #6C757D;
    font-weight: 500;
}

.amount {
    font-size: 48px;
    color: #141414;
    font-weight: 700;
}

/* Addon Selection */
.addon-selection {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
}

.addon-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border: 2px solid #E9ECEF;
    border-radius: 8px;
    cursor: pointer;
    transition: all 200ms ease;
    background: #FFFFFF;
}

.addon-option:hover {
    border-color: #198754;
    background: #D1E7DD;
}

.addon-option input[type="radio"] {
    margin: 0;
    width: 18px;
    height: 18px;
    accent-color: #198754;
}

.addon-option input[type="radio"]:checked + .addon-label {
    color: #198754;
    font-weight: 600;
}

.addon-option input[type="radio"]:checked ~ .addon-option {
    border-color: #198754;
    background: #D1E7DD;
}

.addon-label {
    color: #141414;
    font-size: 16px;
}

.enrollment-total {
    text-align: center;
    margin: 24px 0;
    padding: 16px;
    background: #F8F9FA;
    border-radius: 8px;
    border: 1px solid #E9ECEF;
}

.enrollment-total span {
    display: block;
    color: #141414;
    font-size: 20px;
    font-weight: 600;
}

.enrollment-total small {
    color: #6C757D;
    font-size: 14px;
    margin-top: 4px;
    display: block;
}

/* Mobile Responsive Styles for Course Pages */
@media (max-width: 1024px) {
    .overview-content,
    .enrollment-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .course-meta {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .course-hero {
        padding: 60px 0;
    }
    
    .course-hero-title {
        font-size: 36px;
    }
    
    .course-hero-subtitle {
        font-size: 18px;
    }
    
    .course-meta {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .course-hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-button,
    .secondary-button {
        width: 100%;
        max-width: 280px;
    }
    
    .curriculum-grid,
    .addons-grid {
        grid-template-columns: 1fr;
    }
    
    .overview-content,
    .enrollment-content {
        gap: 32px;
    }
    
    .pricing-card {
        padding: 24px;
    }
    
    .amount {
        font-size: 36px;
    }
}