:root {
    --primary: #3498db;
    --primary-dark: #2980b9;
    --secondary: #2c3e50;
    --accent: #e74c3c;
    --light: #f8f9fa;
    --dark: #212529;
    --gray: #6c757d;
    --light-gray: #e9ecef;
    --border-radius: 10px;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    color: var(--dark);
    line-height: 1.6;
    background-color: var(--light);
    overflow-x: hidden;
}

.navbar {
    background: white;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 10px 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary);
}

.logo .icon {
    margin-right: 10px;
    color: var(--primary);
}

.logo span {
    color: var(--primary);
}

.section {
    padding: 100px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: var(--secondary);
    position: relative;
}

.section-title::after {
    content: "";
    display: block;
    width: 80px;
    height: 4px;
    background: var(--primary);
    margin: 15px auto 0;
}

.hero {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 180px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path fill="rgba(255,255,255,0.05)" d="M0,0 L100,0 L100,100 Q50,80 0,100 Z"></path></svg>');
    background-size: cover;
    background-position: bottom;
    background-repeat: no-repeat;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.btn-outline-light {
    background: transparent;
    border: 2px solid white;
    color: white;
}

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

.feature-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: rgba(52, 152, 219, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 32px;
    color: var(--primary);
}

.feature-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--secondary);
}

.platform-card {
    text-align: center;
    padding: 30px 20px;
    border-radius: var(--border-radius);
    background: white;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.platform-card:hover {
    transform: translateY(-5px);
}

.platform-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--primary);
    background: rgba(52, 152, 219, 0.1);
    border-radius: 50%;
}

.platform-name {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}

.pricing-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.pricing-card.popular {
    border: 2px solid var(--primary);
}

.pricing-header {
    padding: 25px 20px;
    text-align: center;
    background: var(--secondary);
    color: white;
}

.popular .pricing-header {
    background: var(--primary);
}

.pricing-name {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 5px;
}

.pricing-price {
    font-size: 42px;
    font-weight: 700;
    margin: 15px 0;
}

.pricing-period {
    font-size: 16px;
    opacity: 0.8;
}

.pricing-features {
    padding: 30px;
}

.pricing-features li {
    padding: 10px 0;
    display: flex;
    align-items: center;
}

.pricing-features li::before {
    content: "\f00c";
    font-family: "bootstrap-icons";
    color: var(--primary);
    margin-right: 10px;
    font-weight: bold;
}

.pricing-footer {
    padding: 0 30px 30px;
    text-align: center;
}

.popular-tag {
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--accent);
    color: white;
    padding: 5px 40px;
    transform: rotate(45deg);
    font-size: 14px;
    font-weight: 600;
}

.faq-item {
    background: white;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    padding: 20px 25px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--light);
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-answer.active {
    padding: 20px 25px;
    max-height: 500px;
}

.footer {
    background: var(--secondary);
    color: rgba(255, 255, 255, 0.8);
    padding: 70px 0 0;
}

.footer-title {
    color: white;
    font-size: 20px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary);
}

.footer-links a {
    display: block;
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 15px;
}

.footer-contact .icon {
    margin-right: 10px;
    color: var(--primary);
    min-width: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: white;
    text-decoration: none;
    margin-right: 10px;
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.copyright {
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    margin-top: 50px;
}

.screenshot-container {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: white;
    padding: 20px;
    height: 100%;
}

.screenshot-placeholder {
    background: linear-gradient(45deg, #f0f8ff, #e6f7ff);
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    color: var(--primary);
    font-weight: 600;
    font-size: 18px;
}

.feature-highlight {
    background: linear-gradient(135deg, #e6f7ff, #f0f8ff);
    border-radius: var(--border-radius);
    padding: 30px;
    height: 100%;
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 28px;
    }

    .hero {
        padding: 150px 0 80px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }
}