/* =========================================
   1. GENEL AYARLAR & DEĞİŞKENLER
   ========================================= */
:root {
    /* Renk Paleti */
    --color-bg-soft: #FDFBF7;       /* Sıcak kemik rengi arka plan */
    --color-card-white: #ffffff;    /* Kartlar için temiz beyaz */
    --color-text-dark: #1F332E;     /* Koyu yeşilimsi metin rengi */
    --color-accent-orange: #C75B39; /* Vurgu rengi (Turuncu/Kiremit) */
    
    /* Fontlar */
    --font-serif: 'Lora', serif;
    --font-sans: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-text-dark);
    background-color: var(--color-bg-soft);
    line-height: 1.7;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container { width: 90%; max-width: 1400px; margin: 0 auto; position: relative; }

/* Başlık Stilleri */
.section-title {
    font-family: var(--font-serif);
    font-size: 2.8rem;
    color: var(--color-text-dark);
    margin-bottom: 20px;
    font-weight: 700;
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}
.section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--color-accent-orange);
    border-radius: 2px;
}

/* =========================================
   2. HEADER & NAVİGASYON (MASAÜSTÜ)
   ========================================= */
.site-header {
    padding: 15px 0; 
    position: sticky; top: 0; z-index: 1000;
    background-color: var(--color-bg-soft);
    border-bottom: 1px solid rgba(0,0,0,0.03);
    width: 100%;
    transition: all 0.3s ease;
}

.header-content { display: flex; align-items: center; justify-content: flex-start; position: relative; }
.logo-link { display: flex; align-items: center; margin-left: 280px; transition: margin 0.3s ease; }
.logo-img { height: 80px; width: auto; object-fit: contain; }
.header-right { display: flex; align-items: center; gap: 30px; position: absolute; right: 0; }

.nav-item {
    text-decoration: none; color: var(--color-text-dark); font-weight: 500; font-size: 15px;
    letter-spacing: 0.5px; transition: all 0.3s ease; display: flex; align-items: center;
}
.nav-item:hover { color: var(--color-accent-orange) !important; transform: translateY(-1px); }
.active-page { color: var(--color-accent-orange) !important; font-weight: 700; }

/* Anasayfa Şeffaf Header Modu */
.site-header.home-mode { position: fixed; background-color: transparent; border-bottom: none; padding: 20px 0; }
.home-mode .nav-item, .home-mode .lang-select { color: #ffffff; text-shadow: 0 1px 3px rgba(0,0,0,0.5); }
.home-mode .separator { color: rgba(255,255,255,0.6); }

/* Scroll Edilince Header */
.site-header.home-mode.scrolled { 
    background-color: rgba(253, 251, 247, 0.95); 
    backdrop-filter: blur(10px); padding: 15px 0; box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05); 
}
.home-mode.scrolled .nav-item, .home-mode.scrolled .lang-select { color: var(--color-text-dark); text-shadow: none; }
.home-mode.scrolled .separator { color: #ccc; }

/* Dropdown (Açılır Menü) */
.dropdown { position: relative; display: inline-block; padding: 10px 0; }
.dropdown-content { 
    display: none; 
    position: absolute; 
    top: 100%; 
    left: 0; 
    background-color: var(--color-card-white); 
    min-width: 220px; 
    box-shadow: 0px 15px 30px rgba(0,0,0,0.1); 
    border-radius: 8px; 
    z-index: 1000; 
    padding: 10px 0; 
    border: 1px solid rgba(0,0,0,0.05); 
}
/* DİL MENÜSÜNÜ SAĞA YASLA (Taşmayı önler) */
.header-right .dropdown:last-child .dropdown-content {
    left: auto;
    right: 0;
}
.dropdown:hover .dropdown-content { display: block; }
.dropdown-content a { color: var(--color-text-dark) !important; padding: 12px 25px; text-decoration: none; display: block; font-size: 14px; transition: background 0.2s; text-shadow: none; }
.dropdown-content a:hover { background-color: var(--color-bg-soft); color: var(--color-accent-orange) !important; }
.separator { color: #ccc; font-size: 18px; font-weight: 300; transition: color 0.4s; }
.lang-select { font-family: var(--font-sans); font-weight: 600; text-decoration: none; font-size: 14px; letter-spacing: 0.5px; transition: color 0.4s; color: var(--color-text-dark); }
.arrow { font-size: 12px; margin-left: 3px; }

/* =========================================
   3. ANASAYFA BÖLÜMLERİ
   ========================================= */
.hero-section {
    background-image: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), url('magaza.jpg');
    background-size: cover; background-position: center top; background-attachment: fixed;
    height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center;
    color: #fff; position: relative; flex: none; 
}
.hero-content { display: block; max-width: 900px; padding: 0 20px; margin-top: 0; animation: fadeInUp 1s ease-out; }
.hero-title { font-family: var(--font-serif); font-size: 5rem; line-height: 1.1; margin-bottom: 25px; color: #fff; text-shadow: 0 5px 15px rgba(0,0,0,0.4); }
.hero-subtitle { font-size: 1.5rem; color: rgba(255, 255, 255, 0.95); margin-bottom: 45px; font-weight: 300; max-width: 700px; margin-left: auto; margin-right: auto; }

.scroll-down-btn { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); color: #fff; font-size: 40px; animation: bounce 2s infinite; cursor: pointer; text-decoration: none; text-shadow: 0 2px 5px rgba(0,0,0,0.5); z-index: 2;}
@keyframes bounce { 0%, 20%, 50%, 80%, 100% {transform: translate(-50%, 0);} 40% {transform: translate(-50%, -10px);} 60% {transform: translate(-50%, -5px);} }

/* Ürün Slider */
.featured-products-section { padding: 100px 0; background-color: var(--color-bg-soft); }
.slider-wrapper { position: relative; width: 100%; padding: 0 70px; }
.slider-window { width: 100%; overflow: hidden; }
.slider-track { display: flex; transition: transform 0.5s ease-in-out; width: 100%; }
.product-card-home { flex: 0 0 25%; max-width: 25%; padding: 15px; box-sizing: border-box; }
.card-inner { background-color: var(--color-card-white); border: 1px solid rgba(0,0,0,0.03); border-radius: 12px; padding-bottom: 30px; text-align: center; transition: transform 0.3s ease, box-shadow 0.3s ease; height: 100%; }
.card-inner:hover { transform: translateY(-10px); box-shadow: 0 20px 40px rgba(0,0,0,0.08); border-color: rgba(199, 91, 57, 0.2); }
.card-inner img { width: 100%; height: 240px; object-fit: cover; display: block; margin-bottom: 25px; border-radius: 12px 12px 0 0; }
.card-inner h3 { font-family: var(--font-serif); font-size: 1.4rem; color: var(--color-text-dark); margin-bottom: 20px; font-weight: 700; }
.btn-card-outline { display: inline-block; padding: 12px 30px; border: 2px solid var(--color-accent-orange); color: var(--color-accent-orange); font-family: var(--font-sans); font-weight: 700; font-size: 0.95rem; text-decoration: none; text-transform: uppercase; transition: all 0.3s ease; border-radius: 50px; letter-spacing: 1px; }
.btn-card-outline:hover { background-color: var(--color-accent-orange); color: #fff; box-shadow: 0 5px 15px rgba(199, 91, 57, 0.3); }
.slider-btn { position: absolute; top: 50%; transform: translateY(-50%); background-color: var(--color-accent-orange); color: #fff; border: none; width: 60px; height: 60px; border-radius: 50%; font-size: 30px; cursor: pointer; z-index: 10; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 10px rgba(0,0,0,0.2); transition: all 0.3s; }
.slider-btn:hover { background-color: var(--color-text-dark); transform: translateY(-50%) scale(1.1); }
.slider-btn.prev { left: 0; } .slider-btn.next { right: 0; }

/* Katalog Şeridi */
.catalog-strip { background-color: var(--color-accent-orange); padding: 100px 0; overflow: hidden; color: #fff; }
.catalog-content { display: flex; align-items: center; justify-content: center; gap: 100px; }
.catalog-book-wrapper { position: relative; perspective: 1000px; }
.book-cover img { width: 280px; height: auto; border-radius: 8px; box-shadow: -25px 25px 40px rgba(0,0,0,0.3); transform: rotateY(-25deg) rotateX(5deg); transition: transform 0.5s ease; }
.book-cover img:hover { transform: rotateY(0deg) rotateX(0deg) scale(1.05); box-shadow: 0 15px 40px rgba(0,0,0,0.3); }
.catalog-text { max-width: 550px; }
.catalog-text h2 { color: #fff; border-color: #fff; } 
.catalog-text h2::after { background-color: #fff; }
.catalog-text p { font-size: 1.2rem; margin-bottom: 35px; opacity: 0.95; line-height: 1.7; font-weight: 300; }
.catalog-buttons { display: flex; gap: 20px; }
.btn-catalog-white { background-color: #fff; color: var(--color-accent-orange); padding: 15px 45px; border-radius: 50px; font-weight: 700; text-decoration: none; transition: all 0.3s ease; border: 2px solid #fff; box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
.btn-catalog-white:hover { background-color: transparent; color: #fff; box-shadow: none; }
.btn-catalog-outline { background-color: transparent; color: #fff; padding: 15px 45px; border-radius: 50px; font-weight: 700; text-decoration: none; transition: all 0.3s ease; border: 2px solid #fff; }
.btn-catalog-outline:hover { background-color: #fff; color: var(--color-accent-orange); }

/* Sertifikalar */
.certificates-section { padding: 120px 0; background-color: var(--color-bg-soft); text-align: center; box-shadow: inset 0 10px 30px rgba(0,0,0,0.02); }
.cert-header { max-width: 900px; margin: 0 auto 70px auto; }
.certificates-title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cert-subtitle { font-family: var(--font-sans); font-size: 1.3rem; color: #666; font-weight: 300; margin-top: 20px; }
.certificates-grid { display: flex; justify-content: center; align-items: center; gap: 50px; flex-wrap: wrap; }
.cert-card { background-color: var(--color-card-white); width: 220px; height: 200px; display: flex; align-items: center; justify-content: center; border-radius: 20px; border: 1px solid rgba(0,0,0,0.06); box-shadow: 0 15px 30px rgba(0,0,0,0.05); transition: all 0.4s ease; padding: 25px; }
.cert-card:hover { transform: translateY(-15px); box-shadow: 0 25px 50px rgba(0,0,0,0.15); border-color: var(--color-accent-orange); }
.cert-logo { height: 110px; width: auto; object-fit: contain; filter: grayscale(100%); opacity: 0.5; transition: all 0.4s ease; }
.cert-card:hover .cert-logo { filter: grayscale(0%); opacity: 1; transform: scale(1.1); }

/* =========================================
   4. DİĞER SAYFALAR (Hakkımızda, İletişim, Ürün Detay)
   ========================================= */
.about-page-section { padding: 0; background-color: var(--color-bg-soft); flex: 1; margin-top: 0; }
.about-header-wrapper { position: relative; width: 100%; height: 450px; overflow: hidden; background-color: #1F332E; }
.about-banner-img { width: 100%; height: 100%; object-fit: cover; object-position: center center; display: block; filter: brightness(0.6); }
.about-hero-content { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; width: 100%; padding: 0 20px; z-index: 2; color: #fff; }
.about-main-title { font-family: var(--font-serif); font-size: 5rem; margin: 0; line-height: 1; text-shadow: 0 2px 10px rgba(0,0,0,0.7); font-weight: 700; }
.about-breadcrumb { font-family: var(--font-sans); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 2px; margin-top: 10px; display: block; opacity: 0.9; text-shadow: 0 1px 5px rgba(0,0,0,0.7); }
.about-text-container { max-width: 850px; margin: 0 auto; padding: 80px 20px; text-align: center; }
.about-subtitle-text { display: block; text-align: center; font-size: 1rem; color: var(--color-accent-orange); font-weight: 700; letter-spacing: 2px; margin-bottom: 30px; text-transform: uppercase; }
.about-story p { font-size: 1.2rem; color: #444; line-height: 1.9; margin-bottom: 30px; font-weight: 300; }
.about-highlight { font-family: var(--font-serif); font-size: 2rem; color: var(--color-accent-orange); line-height: 1.4; margin: 60px 0; font-style: italic; position: relative; }

.contact-hero-section { background-image: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('iletisim.jpg'); background-size: cover; background-position: center; background-attachment: fixed; min-height: 100vh; display: flex; align-items: center; justify-content: center; color: #fff; text-align: center; padding-top: 80px; padding-bottom: 150px; }
.contact-hero-content { max-width: 900px; padding: 0 20px; animation: fadeInUp 1s ease-out; }
.contact-title { font-family: var(--font-serif); font-size: 4rem; margin-bottom: 10px; color: #fff; text-shadow: 2px 4px 15px rgba(0,0,0,0.8); }
.contact-quote { font-family: var(--font-sans); font-size: 1.2rem; color: rgba(255,255,255,0.9); margin-bottom: 50px; font-style: italic; text-shadow: 1px 2px 8px rgba(0,0,0,0.8); }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; text-align: left; }
.contact-card { background: rgba(255, 255, 255, 0.15); backdrop-filter: blur(15px); padding: 35px; border-radius: 15px; border: 1px solid rgba(255, 255, 255, 0.3); transition: transform 0.3s; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
.contact-card:hover { transform: translateY(-5px); background: rgba(255, 255, 255, 0.25); }
.contact-card h4 { font-family: var(--font-serif); font-size: 1.4rem; margin-bottom: 20px; color: var(--color-accent-orange); font-weight: 700; text-shadow: 0 1px 2px rgba(0,0,0,0.2); }
.contact-card a, .contact-card p { color: #fff; text-decoration: none; font-size: 1.1rem; display: block; margin-bottom: 8px; font-weight: 500; text-shadow: 0 1px 2px rgba(0,0,0,0.5); }

.product-page-section { padding: 100px 0; background-color: var(--color-bg-soft); flex: 1; margin-top: 50px; }
.product-container { display: flex; gap: 80px; align-items: flex-start; }
.product-image, .product-info { flex: 1; }
.product-title { font-family: var(--font-serif); font-size: 3.5rem; color: var(--color-text-dark); margin-bottom: 15px; }
.product-subtitle { font-size: 1.4rem; color: var(--color-accent-orange); font-weight: 500; margin-bottom: 30px; display: block; letter-spacing: 1px; }
.product-desc { font-size: 1.1rem; color: #555; margin-bottom: 35px; line-height: 1.8; }
.packaging-box { background-color: var(--color-card-white); padding: 35px; border-radius: 12px; border-left: 5px solid var(--color-accent-orange); box-shadow: 0 5px 15px rgba(0,0,0,0.03); }
.packaging-box h4 { font-family: var(--font-serif); font-size: 1.3rem; margin-bottom: 15px; color: var(--color-text-dark); }
.packaging-box ul { list-style-type: none; padding-left: 0; color: #444; }
.packaging-box li { margin-bottom: 8px; position: relative; padding-left: 20px; }
.packaging-box li::before { content: "•"; color: var(--color-accent-orange); font-weight: bold; position: absolute; left: 0; }
.btn-primary { background-color: var(--color-accent-orange); color: white; padding: 18px 50px; border-radius: 50px; font-weight: 600; font-size: 1.1rem; transition: all 0.3s ease; border: 2px solid var(--color-accent-orange); text-transform: uppercase; letter-spacing: 1.5px; text-decoration: none; display: inline-block; box-shadow: 0 5px 15px rgba(199, 91, 57, 0.3); }
.btn-primary:hover { background-color: transparent; border-color: var(--color-accent-orange); color: var(--color-accent-orange); }

/* GALERİ & LIGHTBOX STİLLERİ */
.gallery-container { position: relative; width: 100%; max-width: 500px; }
.main-image-container { position: relative; width: 100%; height: 400px; border-radius: 12px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.1); margin-bottom: 15px; cursor: zoom-in; }
.main-image { width: 100%; height: 100%; object-fit: contain; background-color: var(--color-card-white); transition: opacity 0.3s ease; }
.prev, .next { cursor: pointer; position: absolute; top: 50%; width: 40px; height: 40px; margin-top: -20px; color: white; font-weight: bold; font-size: 20px; transition: 0.3s ease; user-select: none; background-color: rgba(0,0,0,0.2); border-radius: 50%; display: flex; align-items: center; justify-content: center; text-decoration: none; }
.prev { left: 10px; } .next { right: 10px; } .prev:hover, .next:hover { background-color: var(--color-accent-orange); }
.thumbnail-row { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 5px; scrollbar-width: thin; }
.thumbnail { width: 80px; height: 80px; object-fit: cover; border-radius: 6px; cursor: pointer; opacity: 0.6; transition: 0.3s; border: 2px solid transparent; flex-shrink: 0; background-color: #fff; }
.thumbnail:hover, .active-thumb { opacity: 1; border-color: var(--color-accent-orange); }
.lightbox { display: none; position: fixed; z-index: 9999; padding-top: 50px; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0, 0, 0, 0.9); backdrop-filter: blur(5px); }
.lightbox-content { margin: auto; display: block; width: 80%; max-width: 900px; max-height: 80vh; object-fit: contain; animation: zoomIn 0.3s; }
.close-lightbox { position: absolute; top: 20px; right: 35px; color: #f1f1f1; font-size: 40px; font-weight: bold; cursor: pointer; transition: 0.3s; } .close-lightbox:hover { color: var(--color-accent-orange); }
.lightbox .prev, .lightbox .next { position: fixed; top: 50%; background-color: rgba(255,255,255,0.1); width: 50px; height: 50px; font-size: 25px; } .lightbox .prev { left: 20px; } .lightbox .next { right: 20px; } .lightbox .prev:hover, .lightbox .next:hover { background-color: var(--color-accent-orange); }
@keyframes zoomIn { from {transform:scale(0)} to {transform:scale(1)} }

/* =========================================
   5. FOOTER
   ========================================= */
.site-footer { background-color: #162421; color: #e0e0e0; padding: 100px 0 40px 0; margin-top: auto; }
.footer-container { display: flex; justify-content: space-between; align-items: flex-start; border-bottom: 1px solid rgba(255,255,255,0.05); padding-bottom: 60px; margin-bottom: 40px; }
.footer-left { max-width: 450px; }
.footer-logo { height: 100px; width: auto; object-fit: contain; filter: brightness(0) invert(1); opacity: 0.8; margin-bottom: 30px; transition: opacity 0.3s; }
.footer-logo:hover { opacity: 1; }
.footer-slogan { font-size: 1.1rem; color: #999; line-height: 1.7; font-weight: 300; }
.footer-right h4 { color: #fff; font-family: var(--font-serif); font-size: 1.5rem; margin-bottom: 25px; font-weight: 600; }
.footer-right p { font-size: 1.1rem; color: #999; margin-bottom: 12px; font-weight: 400; }
.footer-right a { color: #999; text-decoration: none; transition: color 0.3s; }
.footer-right a:hover { color: var(--color-accent-orange); }
.footer-bottom { text-align: center; font-size: 0.9rem; color: #555; }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

/* =========================================
   6. MOBİL UYUMLULUK (MENÜ + GÖRSEL DÜZELTMESİ)
   ========================================= */
.hamburger-menu, .mobile-nav-overlay { display: none; }

@media (max-width: 900px) {
    /* --- HEADER DÜZENİ --- */
    .header-right { display: none; } /* Masaüstü menüyü gizle */
    
    .header-content { 
        display: flex;
        align-items: center;
        height: 70px;
        position: relative; 
    } 

    /* Logo - Tam Ortada */
    .logo-link { 
        margin-left: 0;
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        z-index: 10;
        width: auto;
    } 
    
    /* Logo Boyutu - Mobilde Küçült */
    .logo-img { 
        height: 45px; 
        max-width: 140px; 
        object-fit: contain;
    } 
    
    .site-header.home-mode.scrolled .logo-img { height: 40px; }

    /* Hamburger Butonu - Sol Üst */
    .hamburger-menu {
        display: flex; 
        flex-direction: column; 
        gap: 5px;
        position: absolute; 
        left: 20px; 
        top: 50%; 
        transform: translateY(-50%);
        cursor: pointer; 
        z-index: 20; 
        padding: 8px;
        background: rgba(255,255,255,0.9); /* Buton daha belirgin olsun */
        border-radius: 6px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    .hamburger-menu .bar {
        width: 24px; 
        height: 3px;
        background-color: var(--color-accent-orange); 
        border-radius: 3px;
    }

    /* --- GÖRSEL DÜZELTMELERİ --- */
    
    /* 1. Anasayfa Arkaplan Resmi */
    .hero-section {
        background-attachment: scroll !important; /* Mobilde sabit arkaplan sorununu çözer */
        background-position: center center !important; /* Resmin tam ortasını gösterir */
        height: 60vh; /* Tam ekran yerine %60 yükseklik */
        min-height: 400px;
        align-items: center; 
    }
    .hero-content { margin-top: 0; }
    .hero-title { font-size: 2.5rem; line-height: 1.2; }

    /* 2. Hakkımızda & İletişim Banner Resimleri */
    .about-header-wrapper, .contact-hero-section {
        height: auto; 
        min-height: 300px;
        padding: 60px 0;
    }
    .about-banner-img {
        height: 300px; 
        object-position: center; 
    }

    /* --- DİĞER MOBİL AYARLAR --- */
    .mobile-nav-overlay {
        display: block; position: fixed; top: 0; left: -100%;
        width: 100%; height: 100vh; background-color: rgba(0,0,0,0.5);
        z-index: 2000; transition: 0.3s ease; visibility: hidden;
    }
    .mobile-nav-overlay.active { left: 0; visibility: visible; }

    .mobile-nav-content {
        position: absolute; top: 0; left: 0;
        width: 280px; height: 100%; background-color: #fff;
        padding: 30px 20px; overflow-y: auto;
        box-shadow: 5px 0 15px rgba(0,0,0,0.2);
    }
    .close-btn { position: absolute; top: 15px; right: 20px; font-size: 30px; font-weight: bold; color: #333; cursor: pointer; }
    
    .mobile-link { display: block; padding: 10px 0; color: #333; text-decoration: none; font-size: 16px; font-weight: 500; border-bottom: 1px solid #f9f9f9; }
    .mobile-link:hover { color: var(--color-accent-orange); padding-left: 5px; }

    .mobile-lang-row { display: flex; gap: 15px; }
    .mobile-lang-row a { display: flex; align-items: center; gap: 5px; text-decoration: none; color: #333; font-weight: 600; font-size: 14px; border: 1px solid #eee; padding: 5px 10px; border-radius: 5px; }
    .mobile-lang-row img { width: 20px; height: auto; }

    /* Slider ve Kartlar */
    .slider-wrapper { padding: 20px 0; }
    .product-card-home { flex: 0 0 100%; max-width: 100%; }
    .slider-btn { width: 40px; height: 40px; font-size: 20px; }
    
    .certificates-section { padding: 60px 0; }
    .certificates-grid { gap: 20px; }
    .cert-card { width: 150px; height: 130px; padding: 15px; }
    .cert-logo { height: 70px; }

    .about-text-container { padding: 60px 20px; }
    .about-container, .contact-container, .product-container, .footer-container, .catalog-content { flex-direction: column; text-align: center; gap: 40px; }
    .contact-grid { grid-template-columns: 1fr; }
    .book-cover img { width: 180px; transform: rotateY(0deg); }
    .catalog-text h2 { font-size: 2.2rem; }
    .catalog-buttons { justify-content: center; flex-wrap: wrap; }
    .lightbox-content { width: 100%; }
    .lightbox .prev, .lightbox .next { width: 40px; height: 40px; font-size: 20px; }
}