/* GLOBAL CORPORATE RESET & BRAND COLORS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --pure-black: #000000;
    --matte-gold: #d4af37;
    --corporate-silver: #cbd5e1;
    --industrial-gray: #1e293b;
    --light-bg: #f8fafc;
    --border-color: #e2e8f0;
}

body {
    background-color: #ffffff;
    color: var(--industrial-gray);
    font-family: 'Inter', sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 88%;
    max-width: 1200px;
    margin: 0 auto;
}

h1, h2, h3, h4 {
    font-family: 'Roboto Condensed', sans-serif;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #0f172a;
}

.relative-z {
    position: relative;
    z-index: 5;
}

/* HEADER & NAVIGATION */
header {
    background-color: var(--pure-black);
    padding: 16px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo img {
    max-height: 48px;
    width: auto;
    display: block;
}

nav ul {
    display: flex;
    list-style: none;
    align-items: center;
}

nav ul li {
    position: relative;
    margin-left: 28px;
}

nav ul li a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    transition: color 0.2s ease;
    padding: 10px 0;
    display: block;
}

nav ul li a:hover, nav ul li a.active {
    color: var(--matte-gold);
}

/* --- COŞKUNÖZ STYLE DROPDOWN NAVIGATION --- */
.dropdown-menu {
    display: none; /* Keep hidden until hover to avoid ghost element blockages */
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #ffffff; /* Clean white background */
    width: 250px;
    padding: 12px 0;
    border-top: 3px solid var(--matte-gold); /* Matte Gold top indicator accent line */
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
    z-index: 1010;
}

/* Hover bridge preventing cursor drops */
.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 0;
    width: 100%;
    height: 20px;
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu li {
    margin-left: 0;
    width: 100%;
}

.dropdown-menu li a {
    padding: 10px 24px;
    font-size: 13px;
    font-weight: 500;
    text-transform: none; /* Submenus styled cleaner in standard mixed casing */
    letter-spacing: 0.2px;
    color: #1e293b;
}

.dropdown-menu li a:hover {
    background-color: #f8fafc;
    color: var(--matte-gold);
}

/* HERO SECTION (Okunabilir Beyaz Başlık) */
.hero {
    position: relative;
    background: url('https://images.unsplash.com/photo-1504917595217-d4dc5ebe6122?auto=format&fit=crop&q=80&w=1600') no-repeat center center/cover;
    height: 90vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.65));
    z-index: 1;
}

.hero-container-layout {
    position: relative;
    z-index: 2;
    text-align: left;
}

.hero-content h1 {
    color: #ffffff !important; /* Forces header text color to match requested clear white tone */
    font-size: 64px;
    line-height: 1.1;
    margin-bottom: 25px;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.9);
    font-family: 'Roboto Condensed', sans-serif;
}

.hero-content p {
    font-size: 20px;
    font-weight: 300;
    margin-bottom: 45px;
    max-width: 800px;
    color: var(--corporate-silver);
}

/* BUTTONS */
.btn {
    display: inline-block;
    background-color: var(--matte-gold);
    color: var(--pure-black);
    padding: 16px 40px;
    text-decoration: none;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: background-color 0.2s, transform 0.2s;
}

.btn:hover {
    background-color: #c5a030;
    transform: translateY(-2px);
}

.btn-outline {
    display: inline-block;
    border: 1px solid var(--matte-gold);
    color: var(--matte-gold);
    padding: 12px 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.2s ease;
}

.btn-outline:hover {
    background-color: var(--matte-gold);
    color: var(--pure-black);
}

/* --- BRAND PARTNERS MARQUEE (DIRECTLY IN COLOR) --- */
.marquee-section {
    background-color: var(--light-bg);
    padding: 60px 0;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.marquee-title {
    text-align: center;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: #64748b;
    margin-bottom: 40px;
    font-weight: 600;
}

.marquee-container {
    display: flex;
    width: 100%;
    overflow: hidden;
}

.marquee-track {
    display: flex;
    width: max-content;
    gap: 80px;
    animation: scrollForward 45s linear infinite;
}

.marquee-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 15px;
}

.marquee-item img {
    height: 48px;
    width: auto;
    object-fit: contain;
    filter: none; /* Grayscale filtresi tamamen kaldırıldı */
    opacity: 1;   /* Doğrudan tam renkli ve canlı görünüm */
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Üzerine gelindiğinde renk değişimi yerine holding stili minimal büyüme */
.marquee-item:hover img {
    transform: scale(1.08);
}

.marquee-item span {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    color: #94a3b8;
    text-transform: uppercase;
}

@keyframes scrollForward {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ABOUT SECTION (Scenic Shadow Card) */
.about-summary {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.about-bg-scenic {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1581092160607-ee22621dd758?auto=format&fit=crop&q=80&w=1200') no-repeat center center/cover;
    filter: brightness(0.15) grayscale(40%);
    z-index: 1;
}

.about-shadow-card {
    position: relative;
    display: flex;
    background-color: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.about-shadow-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
}

.about-card-text {
    width: 55%;
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.about-card-text h3 {
    font-size: 36px;
    margin-bottom: 25px;
    text-transform: uppercase;
}

.about-card-text h3::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background-color: var(--matte-gold);
    margin-top: 10px;
}

.about-card-visual {
    width: 45%;
}

.about-card-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* SECTORS WE SERVE */
.sectors-section {
    position: relative;
    background: url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?auto=format&fit=crop&q=80&w=1200') no-repeat center center/cover;
    padding: 120px 0;
}

.sectors-background-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 1;
}

.sectors-relative-container {
    position: relative;
    z-index: 2;
}

.sectors-relative-container h3 {
    color: #ffffff;
    text-align: center;
    font-size: 34px;
    margin-bottom: 60px;
    text-transform: uppercase;
}

.sectors-relative-container h3::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background-color: var(--matte-gold);
    margin: 10px auto 0 auto;
}

.sector-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
}

.sector-card {
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 25px 35px;
    text-align: center;
    min-width: 260px;
    border-radius: 4px;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.sector-card:hover {
    border-color: var(--matte-gold);
    background-color: rgba(212, 175, 55, 0.06);
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 15px 30px rgba(212, 175, 55, 0.15);
}

.sector-card h4 {
    font-size: 14px;
    font-weight: 500;
    color: #f1f5f9;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

/* --- PRE-FOOTER (HIDROLINK PREMIUM STYLING) --- */
.pre-footer {
    background-color: #0b131a; /* Coşkunöz/Hidrolink dark corporate gray */
    padding: 80px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.pre-footer-grid {
    display: flex;
    justify-content: space-between;
    gap: 40px;
}

.pre-footer-box {
    width: 33.33%;
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 4px;
    color: #f1f5f9;
}

.pre-footer-box:last-child {
    background-color: transparent;
    border: none;
    padding: 20px 0;
}

.box-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.box-icon {
    font-size: 24px;
}

.pre-footer-box h4 {
    color: var(--corporate-silver);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pre-footer-box h3 {
    color: var(--matte-gold); /* Prominent Gold Key Metrics */
    font-size: 30px;
    margin-bottom: 15px;
    font-family: 'Roboto Condensed', sans-serif;
}

.pre-footer-box p {
    font-size: 14px;
    color: #94a3b8;
    line-height: 1.6;
}

.address-text, .contact-text {
    margin-top: 10px;
    margin-bottom: 25px;
    font-size: 14px;
    color: #f1f5f9 !important;
}

/* FOOTER */
footer {
    background-color: var(--pure-black);
    color: #475569;
    text-align: center;
    padding: 35px 0;
    font-size: 13px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}
/* ==========================================================================
   ABOUT PAGE LUXURY LAYOUTS (COŞKUNÖZ INSPIRED)
   ========================================================================== */

/* Section 1: Intro Mizanpajı (Asla Üst Üste Binmeyen Güvenli Alan) */
.about-page-intro {
    padding: 120px 0;
    background-color: #ffffff;
}

.about-page-split {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.about-page-text {
    width: 52%;
}

.sub-title-tag {
    font-size: 11px;
    font-weight: 700;
    color: var(--matte-gold);
    letter-spacing: 2px;
    display: block;
    margin-bottom: 10px;
}

.about-page-text h2 {
    font-size: 38px;
    line-height: 1.2;
    color: #0f172a;
    margin-bottom: 30px;
    text-transform: uppercase;
}

.premium-lead {
    font-size: 18px;
    font-weight: 500;
    color: #334155;
    margin-bottom: 20px;
    line-height: 1.6;
}

.premium-body {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 15px;
}

.about-page-image {
    width: 44%;
    height: 450px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--border-color);
}

.about-page-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Section 2: Pillars Bölümü (Süper Lüks Arka Plan ve Gölgeli Kartlar) */
.about-page-pillars {
    position: relative;
    background: url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?auto=format&fit=crop&q=80&w=1600') no-repeat center center/cover;
    padding: 140px 0;
}

.pillars-dark-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.88); /* Koyu holding stili karartma */
    z-index: 1;
}

.center-title-white {
    color: #ffffff;
    text-align: center;
    font-size: 32px;
    text-transform: uppercase;
    margin-bottom: 60px;
}

.center-title-white::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background-color: var(--matte-gold);
    margin: 12px auto 0 auto;
}

.about-pillars-grid {
    display: flex;
    justify-content: space-between;
    gap: 40px;
}

.pillar-luxury-card {
    position: relative;
    background-color: #ffffff;
    width: 50%;
    padding: 50px 40px;
    border-radius: 4px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5); /* Şatafatlı premium gölge derinliği */
    transition: transform 0.3s ease;
}

.pillar-luxury-card:hover {
    transform: translateY(-8px);
}

.card-accent-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--matte-gold);
}

.card-number {
    font-family: 'Roboto Condensed', sans-serif;
    font-size: 44px;
    font-weight: 700;
    color: #f1f5f9;
    position: absolute;
    top: 25px;
    right: 30px;
    line-height: 1;
}

.pillar-luxury-card h4 {
    font-size: 22px;
    text-transform: uppercase;
    color: #0f172a;
    margin-bottom: 20px;
}

.pillar-luxury-card p {
    font-size: 14px;
    color: #475569;
    line-height: 1.7;
}

/* Section 3: Core Values (Minimalist Üçlü Sütun Yapısı) */
.about-page-values {
    padding: 120px 0;
    background-color: #f8fafc;
}

.center-title-dark {
    text-align: center;
    font-size: 32px;
    text-transform: uppercase;
    margin-bottom: 60px;
    color: #0f172a;
}

.center-title-dark::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background-color: var(--matte-gold);
    margin: 12px auto 0 auto;
}

.values-premium-grid {
    display: flex;
    justify-content: space-between;
    gap: 30px;
}

.value-luxury-box {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    padding: 40px 30px;
    width: 33.33%;
    transition: all 0.3s ease;
}

.value-luxury-box:hover {
    border-color: var(--matte-gold);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

.value-luxury-box h5 {
    font-family: 'Roboto Condensed', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: #0f172a;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.value-luxury-box p {
    font-size: 13.5px;
    color: #475569;
    line-height: 1.6;
}

/* Responsive Düzenleme (Ekran küçülürse patlamayı önler) */
@media (max-width: 992px) {
    .about-page-split, .about-pillars-grid, .values-premium-grid {
        flex-direction: column;
    }
    .about-page-text, .about-page-image, .pillar-luxury-card, .value-luxury-box {
        width: 100% !important;
    }
    .about-page-image {
        height: 300px;
    }
}
/* ==========================================================================
   PRODUCTS HUB PREMIUM EFFECTS
   ========================================================================== */

/* Ürün kartının genel kurumsal duruşu ve yumuşak gölgesi */
.product-row-card {
    display: flex;
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    width: 100%;
    margin-bottom: 35px; /* Kartlar arası boşluğu rahatlattık */
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Fareyle üzerine gelindiğinde holding stili havaya kalkma ve gölgelenme efekti */
.product-row-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(11, 19, 26, 0.12);
    border-color: var(--matte-gold);
}

/* Fotoğraf kutusu ayarları */
.product-row-img {
    width: 38%; /* Genişliği biraz daha doldurduk */
    position: relative;
    overflow: hidden;
    background-color: var(--light-bg);
}

.product-row-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease; /* Fotoğrafın pürüzsüz büyüme hızı */
}

/* Kartın üzerine gelindiğinde fotoğrafın içeride yavaşça büyümesi */
.product-row-card:hover .product-row-img img {
    transform: scale(1.06);
}

/* Sağ taraftaki yazı alanı düzenlemeleri */
.product-row-info {
    width: 62%;
    padding: 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-left: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.product-row-card:hover .product-row-info {
    background-color: #fafbfc; /* Hafif bir derinlik rengi */
}

.product-row-info h4 {
    font-size: 26px;
    color: #0f172a;
    margin-bottom: 18px;
    position: relative;
}

/* Mobil cihazlarda kartların alt alta pürüzsüzce kırılması (Hata Önleyici) */
@media (max-width: 768px) {
    .product-row-card {
        flex-direction: column;
    }
    .product-row-img, .product-row-info {
        width: 100% !important;
    }
    .product-row-img {
        height: 220px;
    }
    .product-row-info {
        padding: 30px;
        border-left: none;
        border-top: 1px solid var(--border-color);
    }
}
/* ==========================================================================
   COŞKUNÖZ STYLE LUXURY TECHNICAL TABLE
   ========================================================================== */

.table-section-header {
    margin-bottom: 40px;
}

.table-tag {
    font-size: 11px;
    font-weight: 700;
    color: var(--matte-gold);
    letter-spacing: 1.5px;
    display: block;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.table-section-header h3 {
    font-size: 32px;
    text-transform: uppercase;
    color: #0f172a;
    margin-bottom: 15px;
    text-align: left; /* Kurumsal sol hizalama */
}

.table-section-header p {
    color: #64748b;
    font-size: 14.5px;
    max-width: 800px;
}

/* Şatafatlı Dış Kutu ve Gölge Derinliği */
.luxury-table-wrapper {
    position: relative;
    background-color: #ffffff;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(11, 19, 26, 0.08); /* Dev şirketlerin kullandığı yumuşak derin gölge */
    border: 1px solid var(--border-color);
}

/* Tablonun en üstündeki altın sarısı lüks şerit */
.table-accent-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--matte-gold);
    z-index: 10;
}

.tech-table-premium {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
    background-color: #ffffff;
}

/* Tablo Başlık Alanı (Saf Siyah ve Net) */
.tech-table-premium th {
    background-color: #000000;
    color: #ffffff;
    padding: 20px 24px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 11.5px;
    letter-spacing: 0.8px;
    border: none;
}

/* Standart Satır Hücreleri */
.tech-table-premium td {
    padding: 18px 24px;
    border-bottom: 1px solid #f1f5f9;
    color: #334155;
    transition: all 0.2s ease;
}

/* Alternatif Arka Plan Rengi (Zebra Çizgisi) */
.tech-table-premium tr:nth-child(even) {
    background-color: #f8fafc;
}

/* Satırın üzerine gelince parlayarak öne çıkma efekti */
.tech-table-premium tr:hover td {
    background-color: rgba(212, 175, 55, 0.03); /* Çok hafif altın sarısı parıltı */
    color: #000000;
    font-weight: 500;
}

/* Basınç Değerlerini Şatafatlı Vurgulama Hücresi */
.highlight-gold-cell {
    color: var(--matte-gold) !important;
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 0.5px;
}

/* Standart Uyumluluk Rozeti */
.compliance-badge {
    background-color: #f1f5f9;
    color: #475569;
    padding: 6px 14px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    border: 1px solid var(--border-color);
}

.tech-table-premium tr:hover .compliance-badge {
    background-color: #000000;
    color: #ffffff;
    border-color: #000000;
    transition: all 0.2s ease;
}
/* ==========================================================================
   VALVE PAGE DUAL GALLERY LAYOUT (PREMIUM INDUSTRIAL)
   ========================================================================== */

/* İki resmi dikey blokta esnek bir şekilde konumlandırma */
.valve-page-gallery {
    width: 44%;
    display: flex;
    flex-direction: column;
    gap: 20px; /* İki resim arasındaki dengeli kurumsal boşluk */
}

/* Her bir ürün kutusunun lüks şablon hatları */
.valve-gallery-item {
    width: 100%;
    height: 215px; /* İki kartın toplam yüksekliği metin alanına tam eşitlenir */
    overflow: hidden;
    border: 1px solid var(--border-color);
    background-color: #ffffff;
    border-radius: 4px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Ürün fotoğraflarının kutuya ezilmeden, şık bir paspartu payıyla sığması */
.valve-gallery-item img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    padding: 10px;
    transition: transform 0.4s ease;
}

/* Fareyle üzerine gelindiğinde altın sarısı vurgu ve lüks esneme efekti */
.valve-gallery-item:hover {
    border-color: var(--matte-gold);
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(212, 175, 55, 0.1);
}

.valve-gallery-item:hover img {
    transform: scale(1.03); /* Çok hafif, klas bir yakınlaşma mikro-etkileşimi */
}

/* Mobil cihaz uyumluluk hata önleyicisi */
@media (max-width: 992px) {
    .valve-page-gallery {
        width: 100% !important;
    }
}