:root {
    --primary-color: #5F8D4E;
    --secondary-color: #285430;
    --accent-color: #A4BE7B;
    --text-color: #333333;
    --light-bg: #F9F9F9;
    --white: #FFFFFF;
    --border-color: #E0E0E0;
    --footer-bg: #2C3E50;
    --footer-text: #ECF0F1;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: linear-gradient(180deg, #ffffff 0%, #e9f5e9 100%);
    background-attachment: fixed; /* Arka planın sabit kalmasını sağlar */
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background-color: var(--white);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
}

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

.logo img {
    height: 60px; /* Logo boyutunu biraz büyüttük çünkü yazı kalktı */
    width: auto;
}

.logo img {
    margin-right: 10px;
}

.logo-text {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center; /* Dikey ortalama */
}

.nav-links a {
    font-weight: 500;
    color: var(--text-color);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: 0.3s;
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

/* Header Social Icons */
.header-socials {
    display: flex;
    gap: 15px;
    margin-left: 10px;
    align-items: center;
}

.header-socials a {
    color: var(--secondary-color);
    font-size: 18px;
}

.header-socials a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.header-socials a::after {
    display: none; /* Alt çizgi efektini kaldır */
}

.menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* Hero Slider */
.hero {
    position: relative;
    height: 600px;
    overflow: hidden;
    background-color: var(--light-bg);
}

.slider-container {
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide.active {
    opacity: 1;
}

.slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.1) 100%); /* Daha yumuşak geçiş */
    z-index: 1;
    pointer-events: none; /* Tıklamaların videoya/slayta geçmesini sağlar */
}

.slide-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 0 20px;
}

.slide-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.slide-content p {
    font-size: 20px;
    margin-bottom: 30px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.slide-video {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100vw;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 5px;
    font-weight: bold;
    border: 2px solid var(--primary-color);
    transition: 0.3s;
}

.btn:hover {
    background-color: transparent;
    color: var(--primary-color);
    background-color: var(--white);
}

.btn-secondary {
    background-color: transparent;
    color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-secondary:hover {
    background-color: var(--secondary-color);
    color: var(--white);
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.section-title p {
    color: #666;
}

/* About Preview */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-image img {
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.about-text h3 {
    font-size: 28px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
    color: #555;
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.product-image {
    height: 250px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: 0.5s;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-info {
    padding: 20px;
    text-align: center;
}

.product-info h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.product-info p {
    color: #777;
    margin-bottom: 15px;
    font-size: 14px;
}

.product-link {
    color: var(--primary-color);
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.product-link:hover {
    color: var(--secondary-color);
}

/* Catalog Banner */
.catalog-banner {
    background-color: var(--secondary-color);
    color: var(--white);
    text-align: center;
    padding: 80px 0;
    background-image: linear-gradient(rgba(40, 84, 48, 0.9), rgba(40, 84, 48, 0.9)), url('https://images.unsplash.com/photo-1585320806297-9794b3e4eeae?ixlib=rb-1.2.1&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-attachment: fixed;
}

.catalog-banner h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.btn-white {
    background-color: var(--white);
    color: var(--secondary-color);
    border-color: var(--white);
}

.btn-white:hover {
    background-color: transparent;
    color: var(--white);
}

/* Contact Form */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info-item {
    display: flex;
    margin-bottom: 30px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: rgba(95, 141, 78, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-right: 20px;
    flex-shrink: 0;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
    font-size: 16px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

textarea.form-control {
    height: 150px;
    resize: vertical;
}

/* Footer */
footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 18px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
    display: inline-block;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #bdc3c7;
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #95a5a6;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: 0.3s;
        box-shadow: 0 5px 5px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        left: 0;
    }

    .hero {
        height: 400px;
    }
    
    .slide-content h1 {
        font-size: 32px;
    }
    
    .about-content, .contact-container {
        grid-template-columns: 1fr;
    }
    
    .header-socials {
        margin-left: 0;
        margin-top: 20px;
    }
}

/* Preloader */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--white);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-logo {
    width: 150px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}