:root {
    --bg-color: #050507;
    /* Deep rich black */
    --text-color: #ffffff;
    --accent-red: #E02E24;
    /* Deeper, premium red */
    --accent-orange: #F58B00;
    /* Warmer orange */
    --gray-dark: #1c1c1e;
    --gray-light: #8e8e93;
    --glass-bg: rgba(28, 28, 30, 0.6);
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    background-image: radial-gradient(circle at 50% 0%, #1a1a1c 0%, var(--bg-color) 70%);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Header */
.site-header {
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background-color: rgba(5, 5, 7, 0.7);
    /* More transparent */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: var(--glass-border);
}

/* ... (skip to other glass elements) ... */

/* Feature Items */
.feature-item {
    background-color: var(--glass-bg);
    padding: 30px;
    border-radius: 16px;
    border: var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

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

/* Photo Cards */
.photo-card {
    background-color: var(--glass-bg);
    padding: 20px;
    border-radius: 12px;
    width: 300px;
    border: var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Chart Container */
.chart-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--glass-bg);
    padding: 30px;
    border-radius: 20px;
    border: var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Testimonial Cards */
.testimonial-card {
    flex: 0 0 300px;
    background-color: var(--glass-bg);
    padding: 30px;
    border-radius: 16px;
    border: var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    scroll-snap-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

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

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--text-color);
    letter-spacing: -0.05em;
}

.logo span {
    color: var(--accent-orange);
}

.site-header nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

.site-header nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.site-header nav a:hover {
    color: var(--accent-orange);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
    /* Header height */
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.1;
    background: linear-gradient(90deg, #fff, #888);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--gray-light);
    margin-bottom: 40px;
}

/* Hero Image Unfolding Animation */
.hero-image-wrapper {
    perspective: 1000px;
    margin-top: 40px;
    display: flex;
    justify-content: center;
    width: 100%;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-tablet-img {
    width: 100%;
    max-width: 600px;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(255, 59, 48, 0.2);
    /* Red glow */
    transform-origin: bottom center;
    animation: unfoldTablet 1.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
    opacity: 0;
}

@keyframes unfoldTablet {
    0% {
        opacity: 0;
        transform: rotateX(90deg) scale(0.8);
    }

    100% {
        opacity: 1;
        transform: rotateX(0deg) scale(1);
    }
}

.hero-image {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #333, #111);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #333;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    transition: transform 0.1s ease-out;
    /* Smooth scroll effect */
}

.placeholder-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: #555;
}

/* How It Works */
.how-it-works {
    padding: 100px 0;
    text-align: center;
}

.section-desc {
    color: var(--gray-light);
    margin-bottom: 60px;
}

.ab-test-demo {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.photo-card {
    background-color: var(--glass-bg);
    padding: 20px;
    border-radius: 12px;
    width: 300px;
    border: var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.photo-placeholder {
    width: 100%;
    height: 200px;
    background-color: #333;
    border-radius: 8px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #777;
}

.vs-badge {
    background-color: var(--accent-red);
    color: white;
    font-weight: 800;
    padding: 10px 15px;
    border-radius: 50%;
    font-size: 1.2rem;
}

/* Results */
.results {
    padding: 100px 0;
    text-align: center;
    background-color: #0a0a0a;
}

.chart-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--glass-bg);
    padding: 30px;
    border-radius: 20px;
    border: var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Final CTA */
.final-cta {
    padding: 100px 0 150px;
    /* Extra bottom padding for sticky button */
    text-align: center;
}

.final-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

/* Sticky CTA Button */
.sticky-cta {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, var(--accent-red), var(--accent-orange));
    color: white;
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.1rem;
    box-shadow: 0 10px 30px rgba(255, 59, 48, 0.4);
    z-index: 2000;
    transition: transform 0.2s, box-shadow 0.2s;
}

.sticky-cta:hover {
    transform: translateX(-50%) scale(1.05);
    box-shadow: 0 15px 40px rgba(255, 59, 48, 0.6);
}

/* Footer */
footer {
    padding: 40px 0 120px;
    text-align: center;
    border-top: 1px solid #333;
    color: var(--gray-light);
    font-size: 0.9rem;
}

.contact-link {
    margin-top: 10px;
}

.contact-link a {
    color: var(--accent-orange);
    text-decoration: none;
    font-weight: 600;
}

.contact-link a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .ab-test-demo {
        flex-direction: column;
        gap: 20px;
    }

    .vs-badge {
        margin: 10px 0;
    }

    .sticky-cta {
        width: 90%;
        text-align: center;
        bottom: 20px;
    }
}

/* Features Section */
.features {
    padding: 100px 0;
    background-color: #050505;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    text-align: left;
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--accent-orange);
}

.feature-item p {
    color: var(--gray-light);
    font-size: 1.1rem;
}

/* Capabilities Section */
.capabilities {
    padding: 100px 0;
    background-color: var(--bg-color);
    /* Keep it black to distinguish from dark gray features if needed, or alternate */
    border-top: 1px solid #333;
}

/* Testimonials */
.testimonials {
    padding: 100px 0;
    text-align: center;
    background-color: var(--bg-color);
    border-top: 1px solid #333;
}

.slider-container {
    max-width: 1000px;
    margin: 0 auto;
    overflow: hidden;
    /* Hide scrollbar for custom controls if needed, or just keep it clean */
    padding: 20px 0;
}

.slider-track {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 20px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    /* Firefox */
}

.slider-track::-webkit-scrollbar {
    display: none;
    /* Chrome/Safari */
}

.testimonial-card {
    flex: 0 0 300px;
    /* Fixed width cards */
    background-color: var(--glass-bg);
    padding: 30px;
    border-radius: 16px;
    border: var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    scroll-snap-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

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

.user-avatar-img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
    border: 2px solid var(--accent-red);
}

.quote {
    font-size: 1rem;
    font-style: italic;
    color: #ccc;
    margin-bottom: 20px;
}

.author {
    font-weight: 600;
    color: var(--accent-red);
}

@media (max-width: 768px) {
    .testimonial-card {
        flex: 0 0 85%;
        /* Wider cards on mobile */
    }
}