:root {
    --primary-color: #007AFF; /* iOS Blue */
    --accent-color: #FF2D55; /* iOS Pink */
    --bg-color: #ffffff;
    --text-color: #1d1d1f;
    --secondary-text: #86868b;
    --section-bg: #f5f5f7;
    --nav-height: 60px;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Navigation */
nav {
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 980px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.lang-toggle {
    background: none;
    border: 1px solid var(--text-color);
    padding: 4px 12px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition);
}

.lang-toggle:hover {
    background: var(--text-color);
    color: white;
}

/* Hero Section */
.hero {
    padding: 120px 20px 60px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.hero p {
    font-size: 1.5rem;
    color: var(--secondary-text);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 12px 32px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 122, 255, 0.4);
}

/* Features Section */
.features {
    padding: 80px 20px;
    background-color: var(--section-bg);
}

.features-container {
    max-width: 980px;
    margin: 0 auto;
}

.feature-block {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 80px;
}

.feature-block:nth-child(even) {
    flex-direction: row-reverse;
}

.feature-text {
    flex: 1;
}

.feature-text h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
    line-height: 1.1;
}

.feature-text p {
    font-size: 1.1rem;
    color: var(--secondary-text);
}

.feature-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.feature-image img {
    max-width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    transition: var(--transition);
}

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

/* Content Pages (Privacy, Support) */
.content-page {
    padding: 120px 20px 60px;
    max-width: 800px;
    margin: 0 auto;
}

.content-page h1 {
    font-size: 2.5rem;
    margin-bottom: 40px;
    text-align: center;
}

.content-section {
    margin-bottom: 40px;
}

.content-section h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--text-color);
}

.content-section p, .content-section ul {
    font-size: 1.1rem;
    color: var(--secondary-text);
    margin-bottom: 16px;
}

.content-section ul {
    padding-left: 24px;
}

.contact-email {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
}

/* Footer */
footer {
    padding: 40px 20px;
    background-color: var(--bg-color);
    border-top: 1px solid rgba(0,0,0,0.1);
    text-align: center;
}

.footer-links {
    margin-bottom: 20px;
}

.footer-links a {
    color: var(--secondary-text);
    text-decoration: none;
    margin: 0 12px;
    font-size: 0.9rem;
}

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

.copyright {
    color: #999;
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .feature-block {
        flex-direction: column;
        gap: 32px;
        text-align: center;
    }
    
    .feature-block:nth-child(even) {
        flex-direction: column;
    }
    
    .nav-links {
        display: none; /* Simplify for mobile for now or add hamburger if needed. Keeping it simple as per request. */
    }
    
    /* Mobile nav override for simplicity in this task */
    .nav-container {
        justify-content: space-between;
    }
    
    .nav-links.mobile-visible {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: white;
        padding: 20px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    }
}