:root {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --accent-color: #FF66B2; /* Vivid Pink from image */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent; /* Remove default tap highlight on mobile */
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    background-color: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 40px;
    width: auto;
    border-radius: 50%;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 30px;
    transition: color 0.3s;
}

.nav a:visited {
    color: var(--text-secondary);
}

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

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text .subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.btn-download {
    display: inline-block;
    background-color: var(--accent-color);
    color: #000;
    padding: 15px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    margin-top: 30px;
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
}

.btn-download:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(255, 102, 178, 0.4);
    background-color: #E04090; /* Darker Pink */
}

.btn-primary {
    display: inline-block;
    background-color: var(--accent-color);
    color: #000;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
}

/* Phone Mockup */
.phone-mockup {
    width: 300px;
    height: 600px;
    background: #000;
    border-radius: 40px;
    border: 8px solid #333;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.screen {
    width: 100%;
    height: 100%;
    background: #222;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* Simulated Ring Light */
.ring-light {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    border: 15px solid var(--accent-color);
    box-shadow: 0 0 30px var(--accent-color), inset 0 0 20px var(--accent-color);
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: #181818;
}

.features h2, .privacy h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Privacy Section */
.privacy {
    padding: 80px 0;
}

.page-top {
    padding-top: 160px;
}

@media (max-width: 768px) {
    .page-top {
        padding-top: 140px;
    }
}

.policy-content {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.policy-content h3 {
    margin-top: 30px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.policy-content ul {
    margin-left: 20px;
    color: var(--text-secondary);
}

.policy-content p {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.contact-box {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Footer */
.footer {
    padding: 40px 0;
    background-color: #000;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        padding: 15px 0;
    }

    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

    .nav a {
        margin-left: 0;
        font-size: 0.9rem;
    }

    .hero {
        padding: 140px 0 60px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }

    .phone-mockup {
        width: 260px;
        height: 520px;
        border-width: 6px;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .features h2, .privacy h2 {
        font-size: 2rem;
        margin-bottom: 40px;
    }

    .policy-content {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 2rem;
    }

    .feature-card {
        padding: 20px;
    }

    .phone-mockup {
        width: 220px;
        height: 440px;
    }
}