:root {
    /* Vibrant Light Theme */
    --primary-color: #ffffff;
    --secondary-color: #f8f9fa;
    --accent-color: #4DBBD2; /* Cyan/Teal Accent */
    --text-color: #2f3542;
    --card-bg: #ffffff;
    --border-color: #e9ecef;
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

body {
    background-color: var(--primary-color);
    color: var(--text-color);
    font-family: var(--font-body);
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex-grow: 1;
}

body.fade-in {
    opacity: 1;
}

body.fade-out {
    opacity: 0;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
}

.navbar {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.navbar-brand {
    display: flex;
    align-items: center;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 1.25rem;
    color: var(--text-color);
    margin-left: 0.5rem;
}

.nav-link {
    color: var(--text-color);
    transition: color 0.3s ease;
    position: relative;
    padding-bottom: 8px;
    font-weight: 500;
}

.nav-link:before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease-in-out;
}

.nav-link:hover:before, .nav-link.active:before {
    width: 100%;
}

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

.hero-section {
    height: 100vh;
    background: linear-gradient(rgba(13, 27, 42, 0.7), rgba(13, 27, 42, 0.9)), url('https://images.unsplash.com/photo-1551501419-5456b4643205?q=80&w=2070&auto=format&fit=crop') no-repeat center center/cover;
    position: relative;
    overflow: hidden;
}

.hero-section h1, .hero-section .lead {
    text-shadow: 0 0 15px rgba(0, 0, 0, 0.5);
    color: #fff !important;
}

.btn-primary {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: #0d1b2a;
    font-weight: bold;
    transition: all 0.3s ease;
    padding: 12px 30px;
}

.btn-primary:hover {
    background-color: #3aa8be;
    border-color: #3aa8be;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(77, 187, 210, 0.3);
}

.featured-products {
    background-color: var(--secondary-color);
}

.product-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.product-card img {
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.product-card .card-body {
    color: var(--text-color);
}

.product-card .card-title {
    color: var(--accent-color);
}



footer {
    background-color: var(--primary-color);
    border-top: 1px solid var(--border-color);
}

/* Form Styles */
.form-control {
    background-color: var(--primary-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.form-control:focus {
    background-color: var(--primary-color);
    color: var(--text-color);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.25rem rgba(0, 170, 255, 0.25);
}

.form-control::placeholder {
    color: #6c757d;
}

.text-muted {
    color: #6c757d !important;
}

.scanning-cta {
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.scanning-cta:hover {
    border-color: var(--accent-color);
    box-shadow: 0 5px 15px rgba(0, 170, 255, 0.1);
}

.scanning-cta-text h4 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.scanning-cta-text p {
    margin-bottom: 0;
    color: var(--text-color);
}



.scanning-cta-button .btn {
    font-size: 1.1rem;
    padding: 0.8rem 1.5rem;
}

/* Split Screen Landing Styles */
.split-container {
    display: flex;
    width: 100%;
    height: 100vh; /* Full viewport height */
    overflow: hidden;
    /* Navbar height padding removed here, handled in HTML/Body if needed, 
       but for a hero look, we usually want it behind or flush. 
       Since navbar is fixed, we need padding or margin. */
    padding-top: 70px; 
}

.split {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    transition: all 0.5s ease-in-out;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    text-align: center;
    padding: 2rem;
}

.split:hover {
    flex: 1.5; /* Grow on hover */
    background-color: rgba(0,0,0,0.02);
}

.split-left {
    background-color: #ffffff;
    border-right: 1px solid var(--border-color);
}

.split-right {
    background-color: #eafcfd; /* Very light tint of the #4DBBD2 accent color */
}

.split-content {
    position: relative;
    z-index: 2;
    transition: transform 0.3s ease;
}

.split:hover .split-content {
    transform: scale(1.05);
}

.split img {
    max-width: 80%;
    height: auto;
    max-height: 250px;
    object-fit: contain;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 10px 15px rgba(0,0,0,0.1));
}

.split h2 {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.split p {
    font-size: 1.2rem;
    color: var(--text-color);
    opacity: 0.8;
}

.split .btn-cta {
    margin-top: 20px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.split:hover .btn-cta {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .split-container {
        flex-direction: column;
        height: auto; /* Sabit yükseklik yerine auto */
        min-height: 100vh; /* En az ekran kadar */
        overflow: visible; /* Kaydırmaya izin ver */
    }
    
    .split {
        width: 100%;
        height: auto; /* İçeriğe göre uzasın */
        min-height: 50vh; /* En az yarım ekran kaplasın */
        padding: 4rem 1rem; /* Mobilde biraz daha boşluk */
    }

    .split:hover {
        flex: 1; /* Disable flex growth on mobile */
    }
    
    .split img {
        max-height: 150px;
    }
    
    .split h2 {
        font-size: 1.8rem;
    }
    
    .split .btn-cta {
        opacity: 1;
        transform: translateY(0);
    }
}