:root {
    /* Brand Colors extracted from AppTheme */
    --primary-yellow: #EFFF33;
    --accent-purple: #A78BFA;
    --dark-bg: #000000;
    --dark-surface: #1E1E1E;
    --dark-secondary: #2C2C2C;
    --light-text: #FFFFFF;
    --white: #FFFFFF;

    /* Spacing & Layout */
    --container-width: 1200px;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --font-main: 'Plus Jakarta Sans', sans-serif;
}

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

body {
    background-color: var(--dark-bg);
    color: var(--light-text);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3 {
    font-weight: 900;
    font-style: italic;
    letter-spacing: -1px;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-yellow);
}

p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: #e5e5e5;
}

a {
    text-decoration: none;
    transition: all 0.3s ease;
}

/* Components */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 2rem;
    font-weight: 900;
    font-style: italic;
    text-transform: uppercase;
    font-size: 1rem;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--primary-yellow);
    color: #000000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(239, 255, 51, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--light-text);
    border: 2px solid var(--dark-secondary);
    margin-left: 1rem;
}

.btn-secondary:hover {
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

.btn-large {
    font-size: 1.25rem;
    padding: 1.25rem 2.5rem;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    font-style: italic;
    color: var(--primary-yellow);
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5%;
    padding-top: 80px;
    /* Navbar height */
    position: relative;
    overflow: hidden;
}

/* Background blob effect */
.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: var(--accent-purple);
    filter: blur(150px);
    opacity: 0.2;
    z-index: -1;
    border-radius: 50%;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 1;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: var(--dark-surface);
    border: 8px solid var(--dark-secondary);
    border-radius: 40px;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-screen-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    z-index: 1;
    /* In front of placeholder */
}

.screen-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--dark-surface) 0%, #000 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-purple);
    font-weight: bold;
    font-size: 1.5rem;
    text-align: center;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;
    /* Behind image */
}

/* Store Buttons Group */
.store-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 30px 0;
    flex-wrap: wrap;
}

/* Intro Section */
.section {
    padding: var(--spacing-lg) 0;
}

.intro {
    background-color: #050505;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: var(--spacing-md);
}

.feature-card {
    background: var(--dark-surface);
    padding: 2rem;
    border-radius: 24px;
    border: 1px solid var(--dark-secondary);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-purple);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--white);
}

/* Screenshots Section */
.screenshot-gallery {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding: 20px 0;
    scrollbar-width: none;
    /* Firefox */
}

.screenshot-gallery::-webkit-scrollbar {
    display: none;
    /* Chrome/Safari */
}

.screenshot-item {
    min-width: 260px;
    /* Slightly wider for modern ratios */
    height: 540px;
    /* Approx 9:18 ratio */
    background-color: var(--dark-surface);
    border-radius: 20px;
    /* Rounded corners like a screen */
    border: 4px solid var(--dark-secondary);
    /* Thin bezel */
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
    /* Crop image to radius */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.screenshot-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Footer */
.footer {
    padding: var(--spacing-lg) 0;
    text-align: center;
    background: linear-gradient(to top, #111 0%, #000 100%);
    border-top: 1px solid var(--dark-secondary);
}

.footer-links {
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
    color: #666;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .hero {
        flex-direction: column;
        padding-top: 100px;
        text-align: center;
    }

    .hero-image {
        margin-top: 3rem;
    }

    .cta-group {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }

    .btn-secondary {
        margin-left: 0;
    }

    .navbar {
        padding: 1rem;
    }
}