/* ========================================================
   PREMIUM BÜRONOME OFİS MOBİLYALARI STİL DOSYASI
   Tema: Tam Karanlık, Antrasit Spot Işığı, Mat Siyah ve Bronz
======================================================== */

:root {
    --clr-dark: #0a0a0a;        
    --clr-anthracite: #2b2d30; 
    --clr-gold: #c2a373;        
    --clr-text-light: #f8f8f8; 
    --clr-text-muted: #b8b8b8; 
    
    --font-main: 'Montserrat', sans-serif;
    --font-heading: 'Playfair Display', serif; 
    
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.4);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.6);
}

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

body { 
    font-family: var(--font-main); 
    background: radial-gradient(circle at 50% 30%, #2b2d30 0%, #050505 100%);
    background-attachment: fixed; 
    color: var(--clr-text-light); 
    line-height: 1.7; 
    font-weight: 400; 
    -webkit-font-smoothing: antialiased;
}

html { 
    scroll-behavior: smooth; 
}

@keyframes fadeInUp { 
    from { opacity: 0; transform: translateY(20px); } 
    to { opacity: 1; transform: translateY(0); } 
}
.fade-in-up {
    animation: fadeInUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ==============================================
   HEADER (ÜST MENÜ) - ANİMASYONLU
============================================== */
header { 
    background: rgba(10, 10, 10, 0.95); 
    backdrop-filter: blur(10px);
    color: var(--clr-text-light); 
    padding: 22px 60px; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    position: sticky; 
    top: 0; 
    z-index: 1000; 
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition: padding 0.4s ease, background 0.4s ease, box-shadow 0.4s ease;
}

header.scrolled {
    padding: 12px 60px;
    background: rgba(5, 5, 5, 0.98);
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
}

.logo { 
    font-size: 26px; 
    font-weight: 700; 
    letter-spacing: 4px; 
    color: #ffffff;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-about-btn { 
    background: transparent; 
    border: 1px solid var(--clr-gold); 
    color: var(--clr-gold); 
    padding: 10px 28px; 
    cursor: pointer; 
    transition: all 0.4s ease; 
    font-family: var(--font-main); 
    font-size: 13px;
    font-weight: 600; 
    text-transform: uppercase; 
    letter-spacing: 1px;
    border-radius: 2px;
}

.nav-about-btn:hover { 
    background: var(--clr-gold); 
    color: var(--clr-dark); 
}

/* ==============================================
   KATALOGLAR DROPDOWN (AÇILIR MENÜ) STİLLERİ
============================================== */
.dropdown {
    position: relative;
    display: inline-block;
}

.nav-catalog-btn {
    background: transparent;
    border: 1px solid var(--clr-gold);
    color: var(--clr-gold);
    padding: 10px 24px;
    cursor: pointer;
    transition: all 0.4s ease;
    font-family: var(--font-main);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 2px;
}

.nav-catalog-btn:hover {
    background: var(--clr-gold);
    color: var(--clr-dark);
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 12px;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(15px);
    min-width: 280px;
    border: 1px solid var(--clr-gold);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.8);
    border-radius: 4px;
    z-index: 1001;
    overflow: hidden;
}

.dropdown-content.show {
    display: block;
    animation: fadeInUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.dropdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background 0.3s ease;
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: rgba(255, 255, 255, 0.02);
}

.dropdown-item a {
    color: var(--clr-text-light);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
}

.dropdown-item a:hover {
    color: var(--clr-gold);
}

.dropdown-item .download-btn {
    background: rgba(194, 163, 115, 0.1);
    color: var(--clr-gold);
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 3px;
    border: 1px solid rgba(194, 163, 115, 0.3);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.dropdown-item .download-btn:hover {
    background: var(--clr-gold);
    color: var(--clr-dark);
    box-shadow: 0 0 10px rgba(194, 163, 115, 0.4);
}

/* ==============================================
   DİL SEÇİM BUTONLARI
============================================== */
.lang-switcher {
    display: flex !important;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid rgba(194, 163, 115, 0.3);
}

.lang-btn {
    background: transparent !important;
    border: none !important;
    color: var(--clr-text-muted) !important;
    font-family: var(--font-main);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 2px;
    display: inline-block !important; 
    opacity: 1 !important;
    visibility: visible !important;
}

.lang-btn:hover {
    color: #ffffff !important;
    background: rgba(255, 255, 255, 0.1) !important;
}

.lang-btn.active {
    background: var(--clr-gold) !important;
    color: var(--clr-dark) !important;
    font-weight: 700 !important;
    box-shadow: 0 0 12px rgba(194, 163, 115, 0.5);
    pointer-events: none; 
    display: inline-block !important; 
}

/* ==============================================
   HERO (BÜYÜK RESİM)
============================================== */
.hero { 
    position: relative; 
    min-height: 75vh; 
    display: flex; 
    align-items: center; 
    padding: 0 10%; 
    color: white; 
    background: #111 url('toplanti-masasi.png') no-repeat center center/cover; 
    border-bottom: 2px solid var(--clr-gold);
    box-shadow: 0 25px 50px -10px rgba(194, 163, 115, 0.45);
    z-index: 10;
}

.hero-overlay { 
    position: absolute; 
    top: 0; left: 0; width: 100%; height: 100%; 
    background: linear-gradient(to right, rgba(5,5,5,0.6) 0%, rgba(43,45,48,0.05) 100%); 
    box-shadow: inset 0 0 80px 10px rgba(194, 163, 115, 0.3); 
    z-index: 0;
}

.hero-content { 
    position: relative; 
    z-index: 10; 
    max-width: 650px; 
}

.hero h1 { 
    font-size: 56px; 
    font-family: var(--font-heading);
    margin-bottom: 25px; 
    line-height: 1.1; 
    font-weight: 600;
}

.hero h1 span { color: var(--clr-gold); }

.hero p { 
    font-size: 18px; 
    margin-bottom: 40px; 
    opacity: 0.95; 
    text-shadow: 0 2px 4px rgba(0,0,0,0.5); 
}

/* Button Shine Effect */
.hero-btn { 
    display: inline-block; 
    background: var(--clr-gold); 
    color: var(--clr-dark); 
    padding: 16px 36px; 
    border-radius: 2px; 
    font-weight: 600; 
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    cursor: pointer; 
    border: none;
    position: relative;
    overflow: hidden;
}

.hero-btn::after {
    content: ''; 
    position: absolute; top: 0; left: -100%;
    width: 50%; height: 100%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.4) 50%, rgba(255,255,255,0) 100%);
    transform: skewX(-25deg); 
    transition: all 0.7s ease;
}

.hero-btn:hover::after { left: 200%; }

.hero-btn:hover { 
    background: #dfc599; 
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(194, 163, 115, 0.2);
}

/* ==============================================
   SCROLL REVEAL (İÇERİK ANİMASYONLARI)
============================================== */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.9s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==============================================
   KATEGORİ KARTLARI
============================================== */
.main-tabs-section { padding: 100px 20px 60px; max-width: 1250px; margin: auto; }
.section-title, .content-title { text-align: center; font-size: 32px; font-family: var(--font-heading); font-weight: 600; letter-spacing: 2px; color: #ffffff; }
.title-separator { width: 60px; height: 3px; background-color: var(--clr-gold); margin: 20px auto 50px auto; }
.tabs-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 40px; }

.tab-card { 
    position: relative; height: 400px; border-radius: 4px; overflow: hidden; cursor: pointer; 
    border: 1px solid var(--clr-gold); box-shadow: 0 0 30px rgba(194, 163, 115, 0.4);
    transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    background: radial-gradient(ellipse at top center, rgba(255, 255, 255, 0.5) 0%, rgba(140, 145, 153, 0.6) 50%, rgba(70, 75, 80, 0.9) 100%);
}

.tab-card:hover { transform: translateY(-12px); border-color: var(--clr-gold); box-shadow: 0 0 50px rgba(194, 163, 115, 0.7); background: radial-gradient(ellipse at top center, rgba(255, 255, 255, 0.8) 0%, rgba(200, 205, 212, 0.7) 50%, rgba(100, 105, 110, 0.9) 100%); }
.tab-card .card-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: contain; padding: 30px; z-index: 0; transition: transform 0.8s ease; filter: drop-shadow(0 10px 20px rgba(0,0,0,0.5)); }
.tab-card:hover .card-bg { transform: scale(1.05); }

.cat-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to top, rgba(70, 75, 80, 0.95) 0%, rgba(140, 145, 153, 0) 40%); display: flex; flex-direction: column; justify-content: flex-end; padding: 40px; color: #fff; z-index: 1; }
.cat-overlay h3 { font-size: 28px; font-weight: 600; letter-spacing: 2px; margin-bottom: 5px; text-shadow: 0 2px 8px rgba(0,0,0,0.8); }
.cat-overlay span { font-size: 13px; color: var(--clr-gold); letter-spacing: 2px; display: flex; align-items: center; text-shadow: 0 2px 5px rgba(0,0,0,0.8); }
.cat-overlay .arrow { margin-left: 8px; transition: transform 0.3s ease; }
.tab-card:hover .arrow { transform: translateX(8px); }

/* ==============================================
   ÜRÜN KARTLARI
============================================== */
.content-wrapper { padding-bottom: 80px; }
.tab-content { display: none; padding: 80px 20px 40px; max-width: 1250px; margin: auto; }
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 40px; }
.product-card { background: rgba(255, 255, 255, 0.08); border: 1px solid var(--clr-gold); box-shadow: 0 0 25px rgba(194, 163, 115, 0.35); padding: 20px; text-align: center; border-radius: 4px; display: flex; flex-direction: column; backdrop-filter: blur(10px); transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1); }
.product-card:hover { transform: translateY(-10px); border-color: var(--clr-gold); box-shadow: 0 0 40px rgba(194, 163, 115, 0.65); }
.product-card h3 { font-size: 17px; color: #ffffff; margin-top: 15px; font-weight: 700; letter-spacing: 1px; }
.img-slider { position: relative; width: 100%; height: 300px; background: radial-gradient(ellipse at top center, rgba(255, 255, 255, 0.5) 0%, rgba(140, 145, 153, 0.6) 50%, rgba(70, 75, 80, 0.9) 100%); border-radius: 4px; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.img-slider .slider-img { width: auto; height: auto; max-width: 85%; max-height: 85%; object-fit: contain; display: none; padding: 10px; filter: drop-shadow(0 10px 20px rgba(0,0,0,0.5)); cursor: pointer; }
.img-slider .slider-img.active { display: block; }
.product-card:hover .img-slider { background: radial-gradient(ellipse at top center, rgba(255, 255, 255, 0.8) 0%, rgba(200, 205, 212, 0.7) 50%, rgba(100, 105, 110, 0.9) 100%); }
.slider-btn { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(43, 45, 48, 0.85); border: 1px solid var(--clr-gold); color: var(--clr-gold); width: 44px; height: 44px; cursor: pointer; border-radius: 50%; font-size: 18px; z-index: 2; opacity: 0.85; display: flex; align-items: center; justify-content: center; }
.product-card:hover .slider-btn { opacity: 1; }
.slider-btn:hover { background: var(--clr-gold); color: var(--clr-dark); }
.slider-btn.prev { left: 15px; }
.slider-btn.next { right: 15px; }

/* ==============================================
   HAKKIMIZDA
============================================== */
.about-text { max-width: 900px; margin: 0 auto; font-size: 16px; }
.about-text p { margin-bottom: 20px; text-align: center; }
.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; margin-top: 60px; }
.about-box { background: rgba(255, 255, 255, 0.03); padding: 40px 30px; border-top: 4px solid var(--clr-gold); border-radius: 4px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.about-box h3 { margin-bottom: 20px; color: #ffffff; font-family: var(--font-heading); }
.about-box ul { list-style: none; }
.about-box ul li { margin-bottom: 12px; padding-left: 25px; position: relative; }
.about-box ul li::before { content: ''; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; background-color: var(--clr-gold); border-radius: 50%; }

/* ==============================================
   FOOTER
============================================== */
.footer-section { background: #050505; padding: 80px 20px 20px; border-top: 1px solid rgba(255,255,255,0.05); }
.footer-container { max-width: 1200px; margin: 0 auto; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 40px; }
.footer-brand h2 { font-family: var(--font-heading); font-size: 24px; color: var(--clr-gold); margin-bottom: 10px; }
.footer-contact a { color: var(--clr-gold); text-decoration: none; }
.footer-bottom { max-width: 1200px; margin: 40px auto 0; display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
.seo-toggle { color: var(--clr-text-muted); text-decoration: underline; cursor: pointer; transition: color 0.3s ease; }
.seo-toggle:hover { color: var(--clr-gold); }
.seo-content { display: none; opacity: 0; max-width: 1200px; margin: 30px auto 0; color: rgba(255,255,255,0.5); font-size: 12px; line-height: 1.6; transition: opacity 0.3s ease; }

/* ==============================================
   SABİT WHATSAPP
============================================== */
.sabit-whatsapp { position: fixed; bottom: 40px; right: 40px; background: #25d366; width: 65px; height: 65px; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4); z-index: 999; }

/* ==============================================
   LIGHTBOX
============================================== */
#lightbox { display: none; opacity: 0; position: fixed; z-index: 9999; left: 0; top: 0; width: 100%; height: 100%; background: radial-gradient(ellipse at center, rgba(140, 145, 153, 0.8) 0%, rgba(70, 75, 80, 0.95) 100%); backdrop-filter: blur(15px); align-items: center; justify-content: center; transition: opacity 0.4s ease; }
.lightbox-img-container { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; overflow: hidden; }
#lightbox-img { max-width: 85%; max-height: 80vh; object-fit: contain; transition: transform 0.1s cubic-bezier(0.25, 1, 0.5, 1); transform-origin: center center; filter: drop-shadow(0 15px 30px rgba(0,0,0,0.4)); }
.lightbox-close { position: absolute; top: 40px; right: 40px; color: var(--clr-gold); font-size: 40px; cursor: pointer; z-index: 10001; }
.lb-btn { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(43, 45, 48, 0.95); border: 2px solid var(--clr-gold); color: var(--clr-gold); width: 65px; height: 65px; cursor: pointer; border-radius: 50%; font-size: 26px; z-index: 10000; display: flex; align-items: center; justify-content: center; }
.lb-prev { left: 40px; }
.lb-next { right: 40px; }

/* ==============================================
   RESPONSIVE (MOBİL)
============================================== */
@media (max-width: 768px) {
    header { padding: 15px; flex-direction: column; gap: 14px; justify-content: center; }
    .logo { font-size: 22px; }
    .header-actions { flex-direction: column; gap: 12px; width: 100%; }
    .lang-switcher { width: auto; justify-content: center; }
    .dropdown { width: 100%; text-align: center; }
    .nav-catalog-btn, .nav-about-btn { width: 100%; max-width: 300px; margin: 0 auto; display: block; }
    .dropdown-content { right: auto; left: 50%; transform: translateX(-50%); width: 100%; max-width: 300px; margin-top: 6px; }
    .hero { padding: 0 5%; min-height: 60vh; }
    .hero-content { margin: 0 auto; text-align: center; display: flex; flex-direction: column; align-items: center; }
    .hero h1 { font-size: 32px; }
    .tabs-grid, .products-grid { grid-template-columns: repeat(auto-fit, minmax(100%, 1fr)); }
    .footer-container { flex-direction: column; text-align: center; gap: 30px; }
    .footer-bottom { flex-direction: column; gap: 15px; text-align: center; }
    .lb-btn { width: 45px; height: 45px; font-size: 20px; }
    .lb-prev { left: 10px; }
    .lb-next { right: 10px; }
    .lightbox-close { top: 20px; right: 20px; font-size: 32px; }
    .sabit-whatsapp { bottom: 20px; right: 20px; width: 55px; height: 55px; }
}