/* ==========================================================================
   PETRAGO B2B WEB SITE - MAIN STYLESHEET
   ========================================================================== */

/* Design System & Variables */
:root {
    --primary-color: #3E5066; /* Soft Slate / Steel Blue */
    --primary-light: #526780;
    --primary-dark: #2A384A;
    
    --secondary-color: #7A9E9F; /* Soft Sage / Muted Teal */
    --secondary-light: #9BB8B9;
    --secondary-dark: #5C7F80;
    
    --accent-color: #D8A47F; /* Warm Sand / Soft Gold */
    --accent-hover: #C6906B;
    --accent-light: #F2DCD0;
    
    --bg-light: #F8FAFC; /* Neutral Light background */
    --bg-card: #FFFFFF;
    --text-dark: #2C363F; /* Charcoal Slate text */
    --text-muted: #6C7A89;
    --white: #FFFFFF;
    --border-color: #E2E8F0;
    
    --font-headings: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: all 0.2s ease;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 10px 25px rgba(62, 80, 102, 0.06);
    --shadow-lg: 0 20px 40px rgba(62, 80, 102, 0.1);
    --border-radius: 12px;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headings);
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1.3;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

img, video {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Button Component */
.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 6px;
    font-weight: 600;
    font-family: var(--font-headings);
    font-size: 0.9rem;
    border: 1px solid var(--primary-color);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-accent {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--accent-color);
    color: var(--white);
    border-radius: 6px;
    font-weight: 600;
    font-family: var(--font-headings);
    font-size: 0.9rem;
    border: 1px solid var(--accent-color);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.btn-accent:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Header & Navigation */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: transparent;
    border-bottom: none;
    transition: var(--transition-smooth);
}

.main-header.scrolled {
    padding: 10px 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

/* Logo white filter on dark backgrounds */
.main-header:not(.scrolled) .logo img {
    filter: brightness(0) invert(1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 18px 20px;
    transition: var(--transition-smooth);
}

.main-header.scrolled .header-container {
    padding: 10px 20px;
}

/* Logo Styling */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 56px;
    width: auto;
    max-width: 100%;
    transition: var(--transition-smooth);
}

.main-header.scrolled .logo-img {
    height: 46px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-family: var(--font-headings);
    font-weight: 800;
    font-size: 1.4rem;
    letter-spacing: 1px;
    color: var(--primary-color);
    line-height: 1;
}

.brand-name.white-text {
    color: var(--white);
}

.brand-sub {
    font-family: var(--font-headings);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 2.5px;
    color: var(--secondary-color);
    margin-top: 3px;
}

/* Navigation Links */
.nav-menu ul {
    display: flex;
    gap: 30px;
}

.nav-menu ul li a {
    font-family: var(--font-headings);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--white);
    position: relative;
    padding: 8px 0;
    transition: var(--transition-smooth);
}

.main-header.scrolled .nav-menu ul li a {
    color: var(--primary-color);
}

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

.main-header.scrolled .nav-menu ul li a:hover,
.main-header.scrolled .nav-menu ul li a.active {
    color: var(--secondary-color);
}

.nav-menu ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: var(--transition-smooth);
}

.nav-menu ul li a:hover::after,
.nav-menu ul li a.active::after {
    width: 100%;
}

/* Header Buttons */
.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Language Switcher */
.lang-switcher {
    display: inline-flex;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 3px;
    border-radius: 30px;
    align-items: center;
    gap: 2px;
    margin-right: 10px;
}

.lang-switcher .lang-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-family: var(--font-headings);
    font-size: 0.75rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.75);
    transition: var(--transition-smooth);
}

.lang-switcher .lang-btn:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.05);
}

.lang-switcher .lang-btn.active {
    color: var(--primary-dark);
    background: var(--white);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

/* Scrolled Switcher Adaptation */
.main-header.scrolled .lang-switcher {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.08);
}

.main-header.scrolled .lang-switcher .lang-btn {
    color: var(--text-muted);
}

.main-header.scrolled .lang-switcher .lang-btn:hover {
    color: var(--primary-color);
    background: rgba(0, 0, 0, 0.03);
}

.main-header.scrolled .lang-switcher .lang-btn.active {
    color: var(--white);
    background: var(--primary-color);
    box-shadow: 0 2px 6px rgba(62, 80, 102, 0.2);
}

/* Mobile Language Switcher */
.mobile-lang-wrap {
    margin-top: 35px;
    border-top: 1px solid var(--border-color);
    padding-top: 25px;
    display: flex;
    justify-content: center;
}

.mobile-lang-switcher {
    display: inline-flex;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.08);
    padding: 4px;
    border-radius: 30px;
    gap: 4px;
    width: 140px;
}

.mobile-lang-switcher .mobile-lang-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    border-radius: 30px;
    font-family: var(--font-headings);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    transition: var(--transition-smooth);
}

.mobile-lang-switcher .mobile-lang-btn.active {
    color: var(--white);
    background: var(--primary-color);
    box-shadow: 0 2px 6px rgba(62, 80, 102, 0.15);
}

.btn-quote {
    font-family: var(--font-headings);
    font-size: 0.85rem;
    font-weight: 600;
    background-color: transparent;
    color: var(--white);
    padding: 10px 20px;
    border-radius: 50px;
    border: 1px solid var(--white);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-smooth);
}

.main-header.scrolled .btn-quote {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.btn-quote i {
    font-size: 0.8rem;
    transition: var(--transition-smooth);
}

.btn-quote:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--white);
}

.btn-quote:hover i {
    transform: translate(3px, -2px);
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--white);
    border-radius: 5px;
    transition: var(--transition-smooth);
}

.main-header.scrolled .mobile-toggle .bar {
    background-color: var(--primary-color);
}

/* Mobile Navigation Overlay */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: rgba(62, 80, 102, 0.4);
    backdrop-filter: blur(8px);
    z-index: 9999;
    transition: right 0.5s cubic-bezier(0.77, 0.2, 0.05, 1);
}

.mobile-nav-overlay.open {
    right: 0;
}

.mobile-nav-content {
    position: absolute;
    top: 0;
    right: 0;
    width: 80%;
    max-width: 320px;
    height: 100%;
    background-color: var(--white);
    padding: 40px 30px;
    display: flex;
    flex-direction: column;
    box-shadow: -10px 0 30px rgba(0,0,0,0.1);
}

.mobile-close {
    align-self: flex-end;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
    margin-bottom: 40px;
}

.mobile-nav-content ul {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.mobile-nav-content ul li a {
    font-family: var(--font-headings);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav-content ul li a.active,
.mobile-nav-content ul li a:hover {
    color: var(--secondary-color);
}

.mobile-nav-footer {
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.mobile-nav-footer p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Hero Slider Section */
.hero-slider-section {
    position: relative;
    height: 100vh;
    width: 100%;
    overflow: hidden;
    margin-top: 0;
    background-color: #000;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1), visibility 1s;
    z-index: 1;
}

.slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.slide-media {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.slide-media::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(44, 54, 63, 0.75) 40%, rgba(44, 54, 63, 0.3) 100%);
    z-index: 1;
}

/* Slide Gradients & SVG Art instead of broken images */
.slide-bg-art {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    z-index: 3;
}

.slide-text-wrapper {
    max-width: 680px;
    padding: 0 40px;
    color: var(--white);
    transform: translateY(30px);
    opacity: 0;
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s, opacity 0.8s ease 0.3s;
}

.slide.active .slide-text-wrapper {
    transform: translateY(0);
    opacity: 1;
}

.slide-subtitle {
    font-family: var(--font-headings);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent-color);
    margin-bottom: 15px;
    display: inline-block;
}

.slide-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 20px;
    line-height: 1.2;
}

.slide-desc {
    font-size: 1.1rem;
    font-weight: 300;
    margin-bottom: 30px;
    color: rgba(255, 255, 255, 0.85);
}

/* Slider Controls */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--white);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    transition: var(--transition-smooth);
}

.slider-arrow:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--white);
}

.arrow-prev {
    left: 30px;
}

.arrow-next {
    right: 30px;
}

/* Slider Dots */
.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.dot.active {
    background-color: var(--accent-color);
    width: 30px;
    border-radius: 10px;
}

/* Section Common Styling */
.section-padding {
    padding: 100px 0;
}

.section-title-wrap {
    text-align: center;
    margin-bottom: 60px;
}

.section-title-wrap h2 {
    font-size: 2.2rem;
    text-transform: uppercase;
    position: relative;
    padding-bottom: 15px;
    margin-bottom: 15px;
}

.section-title-wrap h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Large-Character Products Grid (Anasayfa) */
.home-products {
    background-color: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background-color: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 40px;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-light);
}

.product-icon-box {
    margin-bottom: 30px;
    font-size: 2.5rem;
    color: var(--secondary-color);
}

.product-card h3 {
    font-size: 1.35rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--primary-dark);
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.product-subs {
    margin-bottom: 30px;
}

.product-subs li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-dark);
}

.product-subs li i {
    color: var(--accent-color);
    font-size: 0.8rem;
}

.product-card .btn-card {
    align-self: flex-start;
    font-family: var(--font-headings);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 0;
    border-bottom: 2px solid transparent;
}

.product-card:hover .btn-card {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

.product-card .btn-card i {
    transition: var(--transition-fast);
}

.product-card:hover .btn-card i {
    transform: translateX(4px);
}

/* Brands & Partners Scrolling Marquee Section */
.partners-section {
    background-color: var(--bg-light);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.partner-marquee-container {
    width: 100%;
    overflow: hidden;
    position: relative;
    padding: 20px 0;
}

.partner-marquee-container::before,
.partner-marquee-container::after {
    content: '';
    position: absolute;
    top: 0;
    width: 100px;
    height: 100%;
    z-index: 5;
    pointer-events: none;
}

.partner-marquee-container::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-light), transparent);
}

.partner-marquee-container::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-light), transparent);
}

.partner-marquee {
    display: flex;
    width: max-content;
    animation: marquee-scroll 25s linear infinite;
    gap: 60px;
}

.partner-marquee:hover {
    animation-play-state: paused;
}

.partner-logo-item {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100px;
    width: 200px;
    opacity: 0.65;
    transition: var(--transition-fast);
}

.partner-logo-item:hover {
    opacity: 1;
    transform: scale(1.05);
}

/* Reusable SVG styles inside partner logos */
.logo-svg-placeholder {
    width: 100%;
    height: 100%;
    fill: var(--primary-color);
}

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

/* Inner Banner component for subpages */
.subpage-banner {
    position: relative;
    background-color: var(--primary-dark);
    padding: 130px 0 60px;
    margin-top: 0;
    overflow: hidden;
}

.subpage-banner::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(122, 158, 159, 0.15) 0%, transparent 70%);
}

.subpage-banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.subpage-banner-content h1 {
    color: var(--white);
    font-size: 2.5rem;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.breadcrumbs {
    display: flex;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-headings);
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255,255,255,0.7);
}

.breadcrumbs a {
    color: var(--accent-color);
}

.breadcrumbs a:hover {
    color: var(--white);
}

.breadcrumbs span {
    color: rgba(255,255,255,0.4);
}

/* Kurumsal (About) Page & Watermark design */
.about-section {
    background-color: var(--white);
    position: relative;
    overflow: hidden;
}

/* Watermark Container background */
.about-watermark-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    max-width: 900px;
    opacity: 0.02; /* Extremely low opacity */
    pointer-events: none;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    user-select: none;
}

.about-watermark-bg svg {
    width: 100%;
    height: auto;
}

.about-content-wrapper {
    position: relative;
    z-index: 2; /* Sits above the watermark */
    max-width: 800px;
    margin: 0 auto;
}

.about-intro-text {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 25px;
    text-align: justify;
}

.about-paragraph {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 25px;
    text-align: justify;
}

.about-slogan-box {
    margin: 50px auto 20px;
    padding: 30px;
    background-color: var(--bg-light);
    border-left: 4px solid var(--accent-color);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    text-align: center;
    max-width: 650px;
    box-shadow: var(--shadow-sm);
}

.about-slogan-box h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}

.about-slogan-box p {
    font-family: var(--font-headings);
    font-weight: 600;
    color: var(--secondary-dark);
    letter-spacing: 1px;
}

/* Products Details Page */
.products-detail-section {
    background-color: var(--bg-light);
}

.product-group {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 50px;
    margin-bottom: 60px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.product-group:last-child {
    margin-bottom: 0;
}

.product-group-header {
    display: flex;
    align-items: center;
    gap: 20px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 20px;
    margin-bottom: 35px;
}

.product-group-icon {
    font-size: 2.2rem;
    color: var(--secondary-color);
    background-color: var(--bg-light);
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
}

.product-group-header h2 {
    font-size: 1.8rem;
    color: var(--primary-dark);
    margin: 0;
}

.product-group-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

/* Responsive Specs Table */
.table-responsive {
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
}

.specs-table th {
    background-color: var(--primary-color);
    color: var(--white);
    font-family: var(--font-headings);
    font-weight: 600;
    padding: 15px 20px;
}

.specs-table td {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-dark);
}

.specs-table tr:last-child td {
    border-bottom: none;
}

.specs-table tr:nth-child(even) {
    background-color: var(--bg-light);
}

.spec-badge {
    display: inline-block;
    padding: 4px 10px;
    background-color: var(--accent-light);
    color: var(--accent-hover);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.8rem;
}

/* TDS Page (3 Column Grid) */
.tds-section {
    background-color: var(--bg-light);
}

.tds-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.tds-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.tds-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--secondary-light);
}

.tds-card-top {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
}

.pdf-icon-box {
    font-size: 2.2rem;
    color: #E2583E; /* Standard PDF Red */
    background-color: rgba(226, 88, 62, 0.08);
    width: 55px;
    height: 55px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 10px;
}

.tds-info h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 5px;
}

.tds-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
}

.tds-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.btn-download {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-headings);
    font-size: 0.85rem;
}

.btn-download:hover {
    color: var(--accent-color);
}

/* Contact Page (2 Columns) */
.contact-section {
    background-color: var(--white);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
}

/* Left Column: Info & Form */
.contact-info-wrap {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.contact-details h3 {
    font-size: 1.4rem;
    color: var(--primary-dark);
    margin-bottom: 25px;
    text-transform: uppercase;
}

.contact-details-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.contact-icon {
    font-size: 1.1rem;
    color: var(--secondary-color);
    width: 35px;
    height: 35px;
    background-color: var(--bg-light);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 0.95rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 5px;
}

.contact-text p, .contact-text a {
    font-size: 0.95rem;
    color: var(--text-dark);
}

.contact-text a:hover {
    color: var(--accent-color);
}

/* Simple B2B Contact Form */
.contact-form-box {
    background-color: var(--bg-light);
    padding: 35px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.contact-form-box h3 {
    font-size: 1.25rem;
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--text-dark);
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(122, 158, 159, 0.15);
}

textarea.form-control {
    resize: vertical;
}

/* Right Column: Maps iframe */
.contact-map-wrap {
    width: 100%;
    height: 100%;
    min-height: 450px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.contact-map-wrap iframe {
    width: 100%;
    height: 100%;
    min-height: 450px;
    border: none;
}

/* Global Footer Styles */
.main-footer {
    background-color: var(--primary-dark);
    color: rgba(255, 255, 255, 0.75);
}

.footer-top {
    padding: 80px 0 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-col h3 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 2px;
    background-color: var(--accent-color);
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    max-width: fit-content;
}

.footer-logo img {
    height: 60px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-about .about-text {
    margin-top: 20px;
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 25px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--white);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--accent-color);
    color: var(--white);
    transform: translateY(-2px);
}

.footer-links ul li,
.footer-products ul li {
    margin-bottom: 12px;
}

.footer-links ul li a,
.footer-products ul li a {
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.footer-links ul li a:hover,
.footer-products ul li a:hover {
    color: var(--accent-color);
    transform: translateX(3px);
}

.footer-contact .company-title {
    color: var(--white);
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.footer-contact p {
    font-size: 0.88rem;
    line-height: 1.6;
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.footer-contact p i {
    color: var(--accent-color);
    margin-top: 3px;
    flex-shrink: 0;
}

.footer-contact p a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    padding: 25px 0;
    font-size: 0.85rem;
    background-color: #1F2831;
}

.footer-bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-bottom-container p strong {
    color: var(--white);
}

.design-credit {
    opacity: 0.7;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */

/* Tablet & Mobile Layouts */
@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .tds-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .slide-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .logo-img {
        height: 48px;
    }
    
    .header-container {
        padding: 15px 20px;
    }
    
    .nav-menu {
        display: none; /* Hide desktop menu */
    }
    
    .mobile-toggle {
        display: flex; /* Show mobile toggle */
    }
    
    .hero-slider-section {
        height: 75vh;
        margin-top: 0;
    }
    
    .slide-title {
        font-size: 2.2rem;
    }
    
    .slide-desc {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .tds-grid {
        grid-template-columns: 1fr;
    }
    
    .product-group {
        padding: 30px;
    }
    
    .product-group-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .footer-bottom-container {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .section-padding {
        padding: 70px 0;
    }
}

@media (max-width: 480px) {
    .brand-name {
        font-size: 1.2rem;
    }
    
    .brand-sub {
        font-size: 0.58rem;
        letter-spacing: 2px;
    }
    
    .hero-slider-section {
        height: 65vh;
    }
    
    .slide-title {
        font-size: 1.8rem;
    }
    
    .slide-text-wrapper {
        padding: 0 20px;
    }
    
    .slider-arrow {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .arrow-prev {
        left: 10px;
    }
    
    .arrow-next {
        right: 10px;
    }
    
    .contact-form-box {
        padding: 20px;
    }
}

/* ==========================================================================
   Home Page Visual Additions (Why Choose Us, Sectors, Sustainability)
   ========================================================================== */

.home-why-us {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
}

.why-us-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.why-us-card {
    background-color: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 30px;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.why-us-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--secondary-color);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: var(--transition-smooth);
}

.why-us-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--secondary-light);
}

.why-us-card:hover::before {
    transform: scaleY(1);
}

.why-us-icon {
    font-size: 2.2rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
    display: inline-block;
    transition: var(--transition-smooth);
}

.why-us-card:hover .why-us-icon {
    color: var(--accent-color);
    transform: scale(1.1);
}

.why-us-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--primary-dark);
}

.why-us-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Sustainability & Green Chemistry */
.home-sustainability {
    background-color: var(--bg-light);
    border-top: 1px solid var(--border-color);
    overflow: hidden;
}

.sustainability-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.sustainability-text-column {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.sustainability-text-column h2 {
    font-size: 2rem;
    text-transform: uppercase;
    color: var(--primary-dark);
    position: relative;
    padding-bottom: 15px;
}

.sustainability-text-column h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
}

.sustainability-text-column p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-dark);
}

.sustainability-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 10px;
}

.sustainability-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-headings);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--primary-color);
}

.sustainability-list-item i {
    color: #4CAF50; /* Eco Green */
    font-size: 1.1rem;
}

.sustainability-image-column {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.sustainability-image-wrapper {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    background-color: var(--white);
    transition: var(--transition-smooth);
}

.sustainability-image-wrapper:hover {
    transform: scale(1.02);
    box-shadow: 0 25px 50px rgba(122, 158, 159, 0.2);
}

.sustainability-image-wrapper img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: cover;
}

/* Rakamlarla PETRAGO (Stats Banner) */
.home-stats {
    background-color: var(--primary-dark);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 20px;
    transition: var(--transition-smooth);
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-icon {
    font-size: 2.2rem;
    color: var(--secondary-light);
    margin-bottom: 15px;
    opacity: 0.8;
}

.stat-number {
    font-family: var(--font-headings);
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--accent-color);
    line-height: 1.1;
    margin-bottom: 10px;
}

.stat-label {
    font-family: var(--font-headings);
    font-size: 0.95rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.5px;
}

/* Kalite Sertifikalari */
.home-certifications {
    background-color: var(--white);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.cert-card {
    background-color: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 35px 25px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cert-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-light);
}

.cert-badge-icon {
    font-size: 2.2rem;
    color: var(--primary-color);
    background-color: rgba(62, 80, 102, 0.06);
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    margin-bottom: 20px;
    transition: var(--transition-smooth);
}

.cert-card:hover .cert-badge-icon {
    background-color: var(--accent-color);
    color: var(--white);
    transform: rotate(360deg);
}

.cert-card h3 {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.cert-type {
    font-family: var(--font-headings);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--secondary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 15px;
    display: inline-block;
}

.cert-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Responsive updates for new sections */
@media (max-width: 1024px) {
    .why-us-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .sustainability-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .certifications-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 600px) {
    .why-us-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .certifications-grid {
        grid-template-columns: 1fr;
    }
}