:root {
    --bg-color: #0f172a;
    --text-color: #e2e8f0;
    --primary-color: #3b82f6;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

header {
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -1px;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 4rem 0;
    gap: 2rem;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
    background: linear-gradient(to right, #fff, #cbd5e1);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: #94a3b8;
    max-width: 600px;
}

.app-icon-placeholder {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    transition: transform 0.3s ease;
}

.app-icon-placeholder:hover {
    transform: scale(1.05);
}

.app-icon-placeholder span {
    font-size: 5rem;
    font-weight: 800;
    color: white;
}

.app-icon {
    width: 200px;
    height: 200px;
    object-fit: contain;
    border-radius: 40px;
    /* Assuming rounded square icon */
}

.about {
    margin-top: 4rem;
    text-align: center;
    padding: 2rem;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 1rem;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #64748b;
    margin-top: 4rem;
    border-top: 1px solid #1e293b;
}

@media (min-width: 768px) {
    .hero {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }

    .hero-content {
        flex: 1;
        padding-right: 2rem;
    }

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

/* Screenshots Section */
.screenshots {
    margin-top: 4rem;
    text-align: center;
}

.screenshots h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.screenshot-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.screenshot-container {
    position: relative;
    width: 280px;
    /* Approximate mobile screen width */
    height: 580px;
    /* Approximate mobile screen height aspect ratio */
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    border: 4px solid #334155;
    background-color: #1e293b;
    transition: transform 0.3s ease;
}

.screenshot-container:hover {
    transform: translateY(-10px);
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.screenshot-placeholder {
    width: 100%;
    height: 100%;
    display: none;
    /* Hidden by default, shown via JS onerror */
    justify-content: center;
    align-items: center;
    background: #1e293b;
    color: #94a3b8;
    font-weight: 600;
    flex-direction: column;
}