:root {
    --primary-color: #007AFF;
    --secondary-color: #5856D6;
    --text-color: #1D1D1F;
    --text-muted: #86868B;
    --bg-color: #FFFFFF;
    --section-bg: #F5F5F7;
    --container-width: 1100px;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color: var(--text-color);
    line-height: 1.5;
    background-color: var(--bg-color);
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

header {
    height: 80px;
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

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

.btn-download {
    background-color: var(--primary-color);
    color: white !important;
    padding: 8px 16px;
    border-radius: 20px;
}

.btn-download:hover {
    background-color: #0062cc;
}

/* Hero Section */
.hero {
    padding-top: 160px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
}

.hero-content h1 {
    font-size: 56px;
    line-height: 1.1;
    font-weight: 700;
    margin-bottom: 24px;
}

.hero-content h1 span {
    color: var(--primary-color);
}

.hero-content p {
    font-size: 20px;
    color: var(--text-muted);
    margin-bottom: 40px;
}

.hero-btns {
    display: flex;
    gap: 16px;
}

.btn-primary {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    padding: 16px 32px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 122, 255, 0.2);
}

.btn-secondary {
    display: inline-block;
    background-color: transparent;
    color: var(--primary-color);
    text-decoration: none;
    padding: 16px 32px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    border: 2px solid var(--primary-color);
    transition: var(--transition);
}

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

.hero-image img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 40px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.1);
    display: block;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    font-size: 40px;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 40px;
    border-radius: var(--border-radius);
    background-color: var(--section-bg);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    background-color: white;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.feature-card .icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-muted);
}

/* Screenshots Section */
.screenshots {
    padding: 100px 0;
    background-color: var(--section-bg);
}

.screenshots-slider {
    display: flex;
    overflow-x: auto;
    gap: 30px;
    padding: 20px 20px 40px;
    margin: 0 -20px;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) transparent;
    -webkit-overflow-scrolling: touch;
}

.screenshots-slider::-webkit-scrollbar {
    height: 6px;
}

.screenshots-slider::-webkit-scrollbar-track {
    background: transparent;
}

.screenshots-slider::-webkit-scrollbar-thumb {
    background-color: var(--primary-color);
    border-radius: 10px;
}

.screenshot-item {
    flex-shrink: 0;
}

.screenshot-item img {
    height: 600px;
    width: auto;
    border-radius: 30px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    display: block;
}

@media (max-width: 768px) {
    .screenshot-item img {
        height: 450px;
    }
}

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

.cta h2 {
    font-size: 40px;
    margin-bottom: 20px;
}

.cta p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

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

.cta .btn-primary:hover {
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Footer */
footer {
    padding: 40px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 40px;
    }
    
    .hero-btns {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}