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

:root {
    --primary-color: #0066ff;
    --secondary-color: #1a1a1a;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --background: #ffffff;
    --background-secondary: #faf9f7;
    --background-accent: #f5f3f0;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --gradient-start: #e07a5f;
    --gradient-end: #f2cc8f;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
}

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

/* Header Styles */
.header {
    background: var(--background);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

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

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

.signin-link {
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 0.375rem;
}

.signin-link:hover {
    background: #0052cc;
    color: white;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 6rem 0 4rem;
    background: var(--background-secondary);
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero-svg {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

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

.hero-illustration {
    margin-top: 3rem;
    display: flex;
    justify-content: center;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.08));
}

.animated-graph {
    max-width: 100%;
    height: auto;
    border-radius: 1rem;
    background: white;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.375rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.btn {
    padding: 0.75rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

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

.btn-primary:hover {
    background: #0052cc;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

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

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

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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


/* Features Section */
.features {
    padding: 6rem 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 3rem;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--border-color);
}

.feature-icon {
    display: inline-flex;
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
    align-items: center;
    justify-content: center;
    background: var(--background-secondary);
    border-radius: 1rem;
    color: var(--primary-color);
}

.feature-icon svg {
    width: 48px;
    height: 48px;
}

.feature-card h3 {
    font-size: 1.375rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.0625rem;
}

/* Benefits Section */
.benefits {
    padding: 6rem 0;
    background: var(--background-accent);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 2.5rem;
}

.benefit-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1.25rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.benefit-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
    border-color: var(--border-color);
}

.benefit-icon {
    display: inline-flex;
    margin-bottom: 1.5rem;
    color: var(--gradient-start);
}

.benefit-icon svg {
    width: 64px;
    height: 64px;
}

.benefit-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.benefit-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1.0625rem;
}

/* Pricing Section */
.pricing {
    padding: 6rem 0;
    background: white;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--background-secondary);
    padding: 3rem 2.5rem;
    border-radius: 1.5rem;
    text-align: center;
    position: relative;
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.pricing-card.featured {
    background: white;
    border-color: var(--primary-color);
    box-shadow: 0 8px 32px rgba(0, 102, 255, 0.08);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
}

.pricing-card.featured:hover {
    box-shadow: 0 20px 48px rgba(0, 102, 255, 0.12);
}

.badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.375rem 1.25rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.025em;
}

.plan-name {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.plan-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 2.5rem;
}

.currency {
    font-size: 1.5rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.amount {
    font-size: 3.5rem;
    font-weight: 700;
    margin: 0 0.375rem;
    letter-spacing: -0.02em;
}

.period {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.plan-features {
    list-style: none;
    margin-bottom: 2rem;
}

.plan-features li {
    padding: 1rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    font-size: 1.0625rem;
    color: var(--text-secondary);
}

.plan-features li:last-child {
    border-bottom: none;
}

.contact-email {
    margin-top: 0.75rem;
    font-size: 0.875rem;
}

.contact-email a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.contact-email a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* FAQ Section */
.faq {
    padding: 6rem 0;
    background: var(--background-accent);
}

.faq-container {
    max-width: 840px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 1rem;
    margin-bottom: 1.25rem;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    border-color: var(--border-color);
}

.faq-question {
    width: 100%;
    padding: 1.75rem 2rem;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 1.25rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    color: var(--text-primary);
}

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

.faq-question span {
    flex: 1;
    margin-right: 1.5rem;
    line-height: 1.5;
}

.faq-icon {
    transition: transform 0.3s ease;
    flex-shrink: 0;
    color: var(--primary-color);
}

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

.faq-answer {
    padding: 0 2rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 2rem 2rem;
    max-height: 500px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.0625rem;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d1b69 100%);
    color: white;
    padding: 4rem 0 2rem;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
    z-index: 1;
}

.footer .container {
    position: relative;
    z-index: 2;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    flex: 1;
    max-width: 400px;
}

.footer-brand h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.footer-brand p {
    color: #b0b0b0;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.footer-contact {
    margin-top: 1rem;
}

.footer-contact p {
    color: #b0b0b0;
    margin-bottom: 0.5rem;
}

.footer-contact a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer-contact a:hover {
    text-decoration: underline;
}

.footer-links {
    display: flex;
    gap: 4rem;
}

.footer-section h4 {
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
    font-weight: 600;
}

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

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: #b0b0b0;
    text-decoration: none;
    transition: color 0.3s;
    font-size: 0.95rem;
}

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

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

.footer-bottom p {
    color: #b0b0b0;
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #b0b0b0;
    transition: all 0.3s;
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-menu-toggle {
        display: flex;
    }

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

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

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-illustration {
        margin-top: 2rem;
    }

    .animated-graph {
        width: 100%;
    }


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

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

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

    .pricing-card.featured {
        transform: none;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }

    .footer-links {
        width: 100%;
        justify-content: space-between;
    }

    .footer-brand {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 3rem 0;
    }

    .features {
        padding: 3rem 0;
    }

    .pricing {
        padding: 3rem 0;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}