:root {
    --primary-green: #25d366;
    --secondary-green: #128c7e;
    --accent-green: #075e54;
    --light-green: #dcf8c6;
    --dark-bg: #1a1a2e;
    --light-bg: #f8fafc;
    --text-dark: #2d3748;
    --text-light: #718096;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #25d366, #128c7e);
    --gradient-secondary: linear-gradient(135deg, #128c7e, #075e54);
}

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

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(37, 211, 102, 0.1);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 8px 32px rgba(37, 211, 102, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
}

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

.nav-link::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.cta-button {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
    color: var(--white);
}

/* Mobile Menu */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--light-bg) 0%, #f0fdf4 100%);
    padding: 140px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(
            circle at 30% 20%,
            rgba(37, 211, 102, 0.1) 0%,
            transparent 50%
        ),
        radial-gradient(
            circle at 70% 80%,
            rgba(18, 140, 126, 0.08) 0%,
            transparent 50%
        );
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: var(--light-green);
    color: var(--accent-green);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 2rem;
    border: 1px solid rgba(37, 211, 102, 0.2);
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero-gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.4rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 1.2rem 3rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
    color: var(--white);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-green);
    padding: 1.2rem 3rem;
    border: 2px solid var(--primary-green);
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-secondary:hover {
    background: var(--primary-green);
    color: var(--white);
    transform: translateY(-3px);
}

.price-highlight {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(37, 211, 102, 0.15);
    display: inline-block;
    border: 1px solid rgba(37, 211, 102, 0.2);
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-green);
    margin-bottom: 0.5rem;
}

.price-period {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* Features Section */
.features {
    padding: 120px 0;
    background: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-badge {
    display: inline-block;
    background: var(--light-green);
    color: var(--accent-green);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid rgba(37, 211, 102, 0.2);
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 4rem;
    max-width: 700px;
    line-height: 1.6;
}

.text-center {
    text-align: center;
}

.text-center .section-subtitle {
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    background: var(--white);
    padding: 3rem;
    border-radius: 24px;
    border: 1px solid rgba(37, 211, 102, 0.1);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(37, 211, 102, 0.02) 0%,
        rgba(18, 140, 126, 0.02) 100%
    );
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(37, 211, 102, 0.15);
    border-color: rgba(37, 211, 102, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--white);
    position: relative;
    z-index: 1;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.feature-description {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 1.1rem;
    position: relative;
    z-index: 1;
}

/* Use Cases Section */
.use-cases {
    padding: 120px 0;
    background: linear-gradient(135deg, #f0fdf4 0%, var(--light-bg) 100%);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.use-case-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(37, 211, 102, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.use-case-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.3s ease;
}

.use-case-card:hover::before {
    transform: scaleY(1);
}

.use-case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(37, 211, 102, 0.1);
}

.use-case-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.use-case-description {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 1rem;
}

/* API Section */
.api-section {
    padding: 120px 0;
    background: var(--dark-bg);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.api-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(
            circle at 20% 50%,
            rgba(37, 211, 102, 0.1) 0%,
            transparent 50%
        ),
        radial-gradient(
            circle at 80% 20%,
            rgba(18, 140, 126, 0.08) 0%,
            transparent 50%
        );
}

.api-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.api-text h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.api-text .hero-gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.api-text p {
    font-size: 1.2rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.code-block {
    background: #2d3748;
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid rgba(37, 211, 102, 0.2);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.code-block::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.code-block pre {
    color: #e2e8f0;
    font-family: "JetBrains Mono", "Monaco", "Menlo", monospace;
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
    overflow-x: auto;
}

/* CTA Section */
.cta-section {
    padding: 120px 0;
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(
        circle at 50% 50%,
        rgba(255, 255, 255, 0.1) 0%,
        transparent 50%
    );
}

.cta-section h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    position: relative;
    z-index: 1;
}

.cta-section p {
    font-size: 1.3rem;
    margin-bottom: 3rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

.btn-white {
    background: var(--white);
    color: var(--primary-green);
    padding: 1.2rem 3rem;
    border: none;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    z-index: 1;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.btn-white:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    color: var(--primary-green);
}

/* Footer */
.footer {
    background: #1a202c;
    color: var(--white);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    /* gap: 3rem; */
    margin-bottom: 3rem;
}

.footer-section h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--primary-green);
}

.footer-section p {
    color: #a0aec0;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-links a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

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

.footer-bottom {
    border-top: 1px solid #2d3748;
    padding-top: 2rem;
    text-align: center;
    color: #718096;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.6s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 1rem 2rem;
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.1);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

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

    .api-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .api-text h2,
    .cta-section h2 {
        font-size: 2.2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .price-amount {
        font-size: 2.2rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
}