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

:root {
    --primary-color: #0066ff;
    --primary-hover: #0052cc;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --background: #ffffff;
    --surface: #f8f9fa;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-popular: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0 60px;
    text-align: center;
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.95;
    font-weight: 400;
}

/* Billing Toggle */
.billing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 32px;
}

.toggle-label {
    font-size: 1rem;
    font-weight: 500;
    color: white;
}

.save-badge {
    background: rgba(255, 255, 255, 0.25);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-left: 8px;
}

/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 56px;
    height: 28px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.3);
    transition: 0.3s;
    border-radius: 28px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: rgba(255, 255, 255, 0.5);
}

input:checked + .slider:before {
    transform: translateX(28px);
}

/* Pricing Section */
.pricing-section {
    padding: 80px 0;
    background: var(--surface);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-top: 40px;
}

/* Pricing Card */
.pricing-card {
    background: white;
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.pricing-card.popular:hover {
    transform: scale(1.05) translateY(-8px);
}

.popular-badge {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-popular);
    color: white;
    padding: 8px 24px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

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

.plan-name {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.plan-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Card Price */
.card-price {
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border-color);
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
    line-height: 1;
}

.price.custom {
    font-size: 2.5rem;
}

.period {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Features List */
.features-list {
    list-style: none;
    margin-bottom: 32px;
    flex-grow: 1;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 16px;
    gap: 12px;
}

.check-icon {
    width: 20px;
    height: 20px;
    color: var(--success-color);
    flex-shrink: 0;
    margin-top: 2px;
}

.cross-icon {
    width: 20px;
    height: 20px;
    color: var(--border-color);
    flex-shrink: 0;
    margin-top: 2px;
}

.feature-item.disabled {
    opacity: 0.5;
}

.feature-item span {
    font-size: 0.95rem;
    color: var(--text-primary);
}

/* CTA Buttons */
.cta-button {
    width: 100%;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.cta-button.primary {
    background: var(--gradient-primary);
    color: white;
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(102, 126, 234, 0.4);
}

.cta-button.secondary {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.cta-button.secondary:hover {
    background: var(--primary-color);
    color: white;
}

.cta-button.large {
    padding: 18px 48px;
    font-size: 1.125rem;
    width: auto;
}

/* Value Section */
.value-section {
    padding: 80px 0;
    background: white;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.value-item {
    text-align: center;
    padding: 32px 24px;
}

.value-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.value-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.value-item p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Social Proof */
.social-proof {
    padding: 80px 0;
    background: var(--surface);
}

.proof-card {
    background: white;
    border-radius: 16px;
    padding: 48px;
    box-shadow: var(--shadow-md);
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.quote-icon {
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.2;
    position: absolute;
    top: 24px;
    left: 32px;
    font-family: Georgia, serif;
}

.testimonial-text {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* FAQ Section */
.faq-section {
    padding: 80px 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 60px;
    color: var(--text-primary);
}

.faq-grid {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
    padding: 24px 0;
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    padding: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    font-family: inherit;
}

.faq-icon {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    margin-top: 16px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* Final CTA */
.final-cta {
    padding: 100px 0;
    background: var(--gradient-primary);
    text-align: center;
    color: white;
}

.cta-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.final-cta .cta-button.primary {
    background: white;
    color: var(--primary-color);
}

.final-cta .cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(255, 255, 255, 0.3);
}

.final-cta .cta-button.secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.final-cta .cta-button.secondary:hover {
    background: white;
    color: var(--primary-color);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 40px 0;
    text-align: center;
}

.footer p {
    margin: 8px 0;
    font-size: 0.95rem;
}

.footer a {
    color: white;
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    transition: border-color 0.3s ease;
}

.footer a:hover {
    border-bottom-color: white;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .pricing-grid {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .pricing-card.popular {
        transform: scale(1);
    }

    .pricing-card.popular:hover {
        transform: translateY(-8px);
    }

    .value-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .proof-card {
        padding: 32px 24px;
    }

    .testimonial-text {
        font-size: 1.125rem;
    }

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

    .cta-subtitle {
        font-size: 1.125rem;
    }

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

@media (max-width: 480px) {
    .hero {
        padding: 60px 0 40px;
    }

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

    .pricing-section {
        padding: 60px 0;
    }

    .value-section,
    .social-proof,
    .faq-section {
        padding: 60px 0;
    }

    .final-cta {
        padding: 60px 0;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .cta-button.large {
        width: 100%;
    }
}

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

.pricing-card {
    animation: fadeInUp 0.6s ease forwards;
}

.pricing-card:nth-child(1) { animation-delay: 0.1s; }
.pricing-card:nth-child(2) { animation-delay: 0.2s; }
.pricing-card:nth-child(3) { animation-delay: 0.3s; }
.pricing-card:nth-child(4) { animation-delay: 0.4s; }
.pricing-card:nth-child(5) { animation-delay: 0.5s; }