:root {
    --primary-color: #4A90E2;
    --secondary-color: #50E3C2;
    --accent-color: #FF6B6B;
    --text-color: #333333;
    --light-text: #666666;
    --background-color: #F9F9F9;
    --white: #FFFFFF;
    --footer-bg: #2C3E50;
    --footer-text: #ECF0F1;
    --border-radius: 12px;
    --spacing-unit: 1rem;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    gap: 20px;
}

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

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

/* Hero Section */
.hero {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-radius: 0 0 20px 20px;
    margin-bottom: 40px;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background-color: var(--white);
    color: var(--primary-color);
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

/* Sections */
section {
    padding: 40px 0;
}

h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
    color: var(--text-color);
}

h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

/* Screenshots */
.screenshots-scroll {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding: 20px 5px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
}

.screenshots-scroll::-webkit-scrollbar {
    display: none; /* Chrome/Safari/Webkit */
}

.screenshot-img {
    height: 500px;
    width: auto;
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    background-color: #f0f0f0;
    border: 1px solid #ddd;
    display: block;
    /* Removed min-width and object-fit to allow natural aspect ratio */
}

.screenshot-img:hover {
    transform: scale(1.02);
}

.screenshot-placeholder {
    min-width: 280px;
    height: 500px;
    background-color: #E0E0E0;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    border: 2px dashed #CCC;
    flex-shrink: 0;
    font-weight: bold;
}

/* Content Pages (Privacy, Support) */
.content-section {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    margin-bottom: 30px;
}

.content-section h3 {
    border-bottom: 2px solid #F0F0F0;
    padding-bottom: 10px;
    margin-top: 30px;
}

.content-section h3:first-child {
    margin-top: 0;
}

.content-section p, .content-section ul {
    margin-bottom: 20px;
    color: var(--light-text);
}

.content-section ul {
    padding-left: 20px;
}

.content-section li {
    margin-bottom: 10px;
}

/* FAQ */
.faq-item {
    margin-bottom: 20px;
    border-bottom: 1px solid #eee;
    padding-bottom: 20px;
}

.faq-question {
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
    cursor: pointer;
}

.faq-answer {
    color: var(--light-text);
}

/* Footer */
footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 40px 0;
    margin-top: 60px;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.footer-links a {
    color: var(--footer-text);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.footer-links a:hover {
    opacity: 1;
}

.copyright {
    font-size: 0.9rem;
    opacity: 0.6;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .nav-links {
        gap: 15px;
        font-size: 0.9rem;
    }
    
    .content-section {
        padding: 25px;
    }
}