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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #1f2937;
    background: #ffffff;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: #2563eb;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: #4b5563;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #2563eb;
}

/* Buttons */
.btn-primary {
    background: #2563eb;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.2s;
    border: none;
    cursor: pointer;
    display: inline-block;
}

.btn-primary:hover {
    background: #1d4ed8;
}

.btn-secondary {
    background: white;
    color: #2563eb;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    border: 1px solid #2563eb;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: #eff6ff;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-full {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    background: linear-gradient(135deg, #f9fafb 0%, #ffffff 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.highlight {
    color: #2563eb;
}

.hero-content p {
    font-size: 1.125rem;
    color: #6b7280;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.trust-badge {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: #6b7280;
}

.trust-badge span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.hero-image img {
    width: 100%;
    border-radius: 1rem;
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
}

.video-link {
    text-align: center;
    margin-top: 1rem;
}

.btn-video {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.btn-video:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

/* Features Section */
.features {
    padding: 4rem 0;
    background: #f9fafb;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: #6b7280;
}

/* Pricing Section */
.pricing {
    padding: 4rem 0;
}

.pricing h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.pricing-card {
    max-width: 500px;
    margin: 0 auto;
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    border: 1px solid #e5e7eb;
    position: relative;
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #2563eb;
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    color: #2563eb;
}

.price-period {
    color: #6b7280;
    margin-bottom: 2rem;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin: 2rem 0;
}

.pricing-features li {
    padding: 0.5rem 0;
    color: #4b5563;
}

.pricing-note {
    font-size: 0.75rem;
    color: #9ca3af;
    margin-top: 1rem;
}

/* FAQ Section */
.faq {
    padding: 4rem 0;
    background: #f9fafb;
}

.faq h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.faq-item h3 {
    margin-bottom: 0.5rem;
}

.faq-item p {
    color: #6b7280;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.footer-logo span {
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-logo p {
    color: #9ca3af;
    margin-top: 0.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Checkout Page */
.checkout-section {
    padding: 4rem 0;
    background: #f9fafb;
    min-height: calc(100vh - 200px);
}

.checkout-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.order-summary, .payment-form {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
}

.order-summary h2, .payment-form h2 {
    margin-bottom: 1.5rem;
}

.order-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid #e5e7eb;
}

.order-total {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    font-weight: 700;
    font-size: 1.125rem;
}

.total-price {
    color: #2563eb;
}

.guarantee {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #f0fdf4;
    border-radius: 0.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: #6b7280;
    font-size: 0.75rem;
}

.card-element {
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    background: white;
}

.card-errors {
    color: #dc2626;
    margin-top: 0.5rem;
    font-size: 0.875rem;
}

.payment-icons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.payment-icons img {
    height: 24px;
}


/* Payment Tabs */
.payment-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    padding-bottom: 0.5rem;
}

.tab-btn {
    background: none;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    font-weight: 500;
    color: #6b7280;
    cursor: pointer;
    transition: all 0.2s;
    border-radius: 0.5rem;
}

.tab-btn:hover {
    color: #2563eb;
    background: #eff6ff;
}

.tab-btn.active {
    color: #2563eb;
    border-bottom: 2px solid #2563eb;
    border-radius: 0;
}

/* PayPal Button Container */
.paypal-button-container {
    margin-top: 1rem;
    min-height: 45px;
}

/* Payment Method Container */
.payment-method {
    transition: all 0.2s ease;
}


/* Success Page */
.success-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f9fafb;
    padding: 2rem;
}

.success-card {
    background: white;
    border-radius: 1rem;
    padding: 3rem;
    text-align: center;
    max-width: 600px;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: #22c55e;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin: 0 auto 1.5rem;
}

.info-box {
    background: #f0fdf4;
    padding: 1.5rem;
    border-radius: 0.75rem;
    margin: 2rem 0;
    text-align: left;
}

.info-box ul {
    margin-top: 0.5rem;
    padding-left: 1.5rem;
}

.steps {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
    text-align: left;
}

.step {
    flex: 1;
    text-align: center;
}

.step-number {
    width: 40px;
    height: 40px;
    background: #2563eb;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.5rem;
    font-weight: 700;
}

.support {
    margin-top: 2rem;
    color: #6b7280;
}

/* validate Page */
.validate-section {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
}

.validate-card {
    max-width: 500px;
    width: 100%;
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.1);
}

.validate-card h1 {
    margin-bottom: 0.5rem;
}

.result-message {
    margin-top: 1rem;
}

.success-message {
    background: #f0fdf4;
    color: #166534;
    padding: 1rem;
    border-radius: 0.5rem;
}

.error-message {
    background: #fef2f2;
    color: #991b1b;
    padding: 1rem;
    border-radius: 0.5rem;
}

.help-box {
    margin-top: 2rem;
    padding: 1rem;
    background: #f3f4f6;
    border-radius: 0.5rem;
}

.loading {
    text-align: center;
    padding: 1rem;
    color: #6b7280;
}

.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #2563eb;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .trust-badge {
        justify-content: center;
    }
    
    .checkout-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .nav-links {
        display: none;
    }
}