@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-base: #ffffff;
    --bg-surface: #ffffff;
    --bg-panel: #F8F9FA;
    --bg-accent: #FAF0F1;
    
    --primary: #6E0A14;
    --primary-glow: #8A0A14;
    --primary-light: #A8101E;
    
    --accent-gold: #B88E3D;
    --accent-blue: #0076E5;
    
    --text-main: #1D1D1F;
    --text-muted: #6E6E73;
    --text-dark: #000000;
    
    --border: rgba(110, 10, 20, 0.08);
    --border-hover: rgba(110, 10, 20, 0.22);
    --border-glow: rgba(110, 10, 20, 0.15);
    
    --font-header: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.15s ease;
    
    --container-max: 1280px;
    --header-height: 80px;
    --shadow-premium: 0 10px 30px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.02);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-base);
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-base);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-header);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-main);
}

/* Dark layout overrides for specific elements */
.hero h1, .hero h2, .hero h3, .hero .stat-item h3,
.carousel-nav-btn:hover {
    color: #ffffff !important;
}

.hero-desc {
    color: rgba(255, 255, 255, 0.7) !important;
}

.stat-item p {
    color: rgba(255, 255, 255, 0.5) !important;
}

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

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

ul {
    list-style: none;
}

/* Base Utility Layouts */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: 6rem 0;
}

.text-gradient {
    background: linear-gradient(135deg, #ffffff 30%, #a8a8b0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-brand-gradient {
    background: linear-gradient(135deg, #ffffff 20%, #e06d77 60%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Layout Header (Premium Navigation) */
header {
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition-smooth);
}

header.scrolled {
    height: 70px;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 54px;
    width: auto;
    object-fit: contain;
    transition: var(--transition-smooth);
}

header.scrolled .logo-img {
    height: 44px;
}

.logo-text {
    font-family: var(--font-header);
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: 0.1em;
    color: var(--text-main);
    display: flex;
    align-items: center;
}

.logo-dot {
    color: var(--primary-light);
    font-size: 1.8rem;
    line-height: 1;
}

/* Nav Menu Links */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.2rem;
}

.nav-link {
    font-family: var(--font-header);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-muted);
    letter-spacing: 0.03em;
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-glow);
    transition: var(--transition-smooth);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

/* Premium Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-header);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.03em;
    padding: 0.75rem 1.6rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition-smooth);
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
    border: 1px solid var(--primary-glow);
    box-shadow: 0 4px 14px rgba(110, 10, 20, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-glow);
    box-shadow: 0 6px 20px rgba(156, 17, 30, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background-color: #25d366;
    color: #ffffff;
    border: 1px solid #20ba5a;
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.2);
}

.btn-whatsapp:hover {
    background-color: #20ba5a;
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.3);
    transform: translateY(-2px);
}

/* Hero Section style */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.95) 25%, rgba(0, 0, 0, 0.6) 55%, rgba(0, 0, 0, 0.2) 80%, transparent 100%),
                url('../images/hero_bg.png') no-repeat center right / cover;
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    background-image: linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 50px 50px;
    background-position: center;
}

.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(160, 0, 24, 0.1) 0%, transparent 70%);
    top: 20%;
    right: 5%;
    z-index: 3;
    filter: blur(40px);
    animation: pulse 8s infinite alternate ease-in-out;
}

.hero-container {
    position: relative;
    z-index: 5;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
}

.hero-content {
    max-width: 720px;
}

.hero .hero-badge {
    display: inline-flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.08) !important;
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
    padding: 0.4rem 1rem;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85) !important;
    margin-bottom: 2rem;
    gap: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary-light);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--primary-light);
}

.hero h1 {
    font-size: 3.8rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.hero h1 span {
    display: block;
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 1.2rem;
    margin-bottom: 3.5rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2.5rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.stat-icon {
    color: #FF2B44;
    font-size: 1.6rem;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-item h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.3rem;
    letter-spacing: -0.01em;
    text-transform: uppercase;
}

.stat-item h3 span {
    color: var(--primary-light);
}

.stat-item p {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6) !important;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    line-height: 1.3;
}

/* Hero Visual Art (Modern layout) */
.hero-visual {
    display: flex;
    justify-content: center;
    position: relative;
}

.hero-led-diagram {
    width: 100%;
    max-width: 420px;
    height: auto;
    filter: drop-shadow(0 20px 50px rgba(0,0,0,0.7));
}

/* Category Grid & Cards */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem auto;
}

.section-tag {
    color: var(--primary-light);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
    display: block;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1.2rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.category-card {
    background: linear-gradient(135deg, #1c1c22 0%, #0d0d0f 100%); /* Subtle metallic corporate gradient */
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px; /* Enhanced rounded corners for premium 3D look */
    padding: 0; /* Clear default padding for edge-to-edge top image */
    position: relative;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease, box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.12); /* 3D top bevel highlight */
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-light), #FF2B44);
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: 10;
}

.category-card:hover {
    transform: translateY(-8px) scale(1.02); /* Enhanced 3D lift scale */
    border-color: rgba(224, 42, 58, 0.5);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.75), inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 0 25px rgba(168, 16, 30, 0.25); /* Stronger 3D depth shadow + red reflection */
}

.category-card:hover::before {
    opacity: 1;
}

/* Image box styles */
.category-img-box {
    width: 100%;
    height: 195px;
    overflow: hidden;
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.category-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.category-card:hover .category-img {
    transform: scale(1.06);
}

/* Content styles */
.category-content {
    padding: 2rem 1.8rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.category-content h3 {
    font-size: 1.25rem;
    color: #ffffff !important;
    margin-bottom: 0.8rem;
    font-weight: 600;
    font-family: var(--font-header);
    letter-spacing: -0.01em;
}

.category-content p {
    color: rgba(255, 255, 255, 0.6) !important;
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.8rem;
    flex-grow: 1;
}

.category-link {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-header);
    font-weight: 600;
    font-size: 0.9rem;
    color: #e02a3a !important; /* Bright premium red */
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.category-link:hover {
    color: #ff3b4f !important;
}

.category-link i {
    font-size: 0.78rem;
    transition: var(--transition-fast);
}

.category-card:hover .category-link i {
    transform: translateX(4px);
}

#categories-section {
    background-color: #121214; /* Corporate dark grey background */
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    border-top: 1px solid rgba(255, 255, 255, 0.04);
}

#categories-section .section-header h2 {
    color: #ffffff !important;
}

#categories-section .section-header p {
    color: rgba(255, 255, 255, 0.5) !important;
}

/* Trust Section (Profesyonel features) */
.trust-section {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
}

.trust-item {
    text-align: left;
}

.trust-icon-box {
    width: 60px;
    height: 60px;
    background-color: var(--bg-panel);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-light);
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
}

.trust-item h3 {
    font-size: 1.15rem;
    margin-bottom: 0.6rem;
}

.trust-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Product Listing Layout */
.catalog-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

/* Sidebar filter */
.catalog-sidebar {
    position: sticky;
    top: calc(var(--header-height) + 2rem);
    height: max-content;
}

.sidebar-box {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.8rem;
    margin-bottom: 1.5rem;
}

.sidebar-title {
    font-size: 1.1rem;
    margin-bottom: 1.2rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-main);
}

.category-filter-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.7rem 0.9rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    text-align: left;
    color: var(--text-muted);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    color: var(--primary-light);
    background-color: rgba(110, 10, 20, 0.04);
}

.filter-btn.active {
    color: #ffffff;
    background-color: var(--primary);
    border-color: var(--primary);
}

.filter-count {
    font-size: 0.8rem;
    background-color: var(--bg-panel);
    color: var(--text-muted);
    padding: 0.15rem 0.5rem;
    border-radius: 100px;
}

.filter-btn.active .filter-count {
    background-color: var(--primary);
    color: #ffffff;
}

/* Product list area */
.products-wrapper {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.products-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.products-count-text {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.search-box {
    position: relative;
    width: 100%;
    max-width: 300px;
}

.search-input {
    width: 100%;
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-main);
    border-radius: 6px;
    padding: 0.6rem 1rem 0.6rem 2.5rem;
    font-family: var(--font-body);
    font-size: 0.88rem;
    transition: var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-glow);
    box-shadow: 0 0 10px rgba(110, 10, 20, 0.15);
}

.search-icon {
    position: absolute;
    left: 0.9rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Product Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 1.8rem;
}

.product-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-light);
    box-shadow: 0 12px 24px rgba(160, 0, 24, 0.08);
}

.product-img-wrapper {
    background-color: var(--bg-panel);
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 0;
    border-bottom: 1px solid var(--border);
    overflow: hidden;
}

.product-placeholder-graphic {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.product-card:hover .product-card-img {
    transform: scale(1.05);
}

.product-badge-tech {
    position: absolute;
    top: 0.75rem;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.product-badge-tech.voltage {
    background-color: #ffd43f;
    color: #141416;
    left: 0.75rem;
}

.product-badge-tech.ip {
    background-color: #2085ec;
    color: #ffffff;
    right: 0.75rem;
}

.product-info {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-code {
    font-size: 0.75rem;
    font-weight: 600;
    color: #888888;
    letter-spacing: 0.05em;
    margin-bottom: 0.4rem;
    text-transform: uppercase;
}

.product-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.8rem;
    line-height: 1.35;
    height: 2.7rem;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.product-specs-summary {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.4rem;
    margin-bottom: 1.2rem;
}

.spec-badge {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    font-weight: 500;
    background-color: var(--bg-panel);
    border: 1px solid var(--border);
    padding: 0.35rem 0.5rem;
    border-radius: 6px;
    color: var(--text-main);
    transition: var(--transition-fast);
}

.spec-badge i {
    color: var(--primary);
    font-size: 0.8rem;
    width: 12px;
    text-align: center;
}

.product-usage {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.45;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-card-actions {
    display: flex;
    gap: 0.6rem;
    margin-top: auto;
}

.btn-card-incele {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: #ffffff;
    color: var(--primary);
    border: 1.5px solid var(--primary);
    border-radius: 10px;
    padding: 0.6rem;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-header);
    transition: all 0.25s ease;
    cursor: pointer;
}

.btn-card-incele:hover {
    background-color: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(160, 0, 24, 0.15);
}

.btn-card-teklif {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: var(--primary);
    color: #ffffff;
    border: 1.5px solid var(--primary);
    border-radius: 10px;
    padding: 0.6rem;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-header);
    transition: all 0.25s ease;
    cursor: pointer;
}

.btn-card-teklif:hover {
    background-color: var(--primary-light);
    border-color: var(--primary-light);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(160, 0, 24, 0.25);
}

/* Product Detail Page Styles */
.detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 2rem;
}

.detail-gallery {
    position: sticky;
    top: calc(var(--header-height) + 2rem);
}

.detail-img-box {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 3rem;
    box-shadow: var(--shadow-premium);
}

.detail-img-box svg {
    max-height: 100%;
}

.detail-info {
    display: flex;
    flex-direction: column;
}

.detail-breadcrumbs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.detail-breadcrumbs a:hover {
    color: var(--primary-light);
}

.detail-header {
    border-bottom: 1px solid var(--border);
    padding-bottom: 2rem;
    margin-bottom: 2rem;
}

.detail-code {
    font-size: 1rem;
    font-weight: 800;
    color: var(--primary-light);
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
    display: block;
}

.detail-title {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.detail-price-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.detail-price {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
    font-family: var(--font-header);
}

.detail-profesyonel-note {
    font-size: 0.85rem;
    background-color: var(--bg-accent);
    border: 1px solid var(--border);
    color: var(--primary-light);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-weight: 600;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.detail-desc-block {
    margin-bottom: 2.5rem;
}

.detail-desc-block h3 {
    font-size: 1.25rem;
    margin-bottom: 0.8rem;
}

.detail-desc-block p {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

/* Technical Specification Table */
.spec-table-box {
    margin-top: 1.5rem;
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

.spec-table th {
    background-color: var(--bg-panel);
    color: var(--text-main);
    font-family: var(--font-header);
    font-weight: 600;
    padding: 0.9rem 1.2rem;
    border-bottom: 1px solid var(--border);
}

.spec-table td {
    padding: 0.9rem 1.2rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-muted);
}

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

.spec-table td:first-child {
    font-weight: 500;
    color: var(--text-main);
    width: 40%;
}

/* Order calculator widget */
.order-calculator {
    background-color: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2rem;
    margin-top: 2rem;
}

.calc-title {
    font-size: 1.2rem;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.calc-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 1.5rem;
    align-items: flex-end;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.form-control {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-main);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 0.92rem;
    transition: var(--transition-fast);
}

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

.calc-total {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 48px;
}

.calc-total-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.calc-total-val {
    font-family: var(--font-header);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text-main);
}

.calc-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* RFQ Form Page Styles */
.rfq-layout {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    margin-top: 2rem;
}

.rfq-form-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 3rem;
    box-shadow: var(--shadow-premium);
}

.rfq-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.rfq-full-width {
    grid-column: span 2;
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.rfq-info-panel {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 3rem;
    height: max-content;
}

.rfq-info-title {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
}

.rfq-info-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.rfq-info-item {
    display: flex;
    gap: 1.2rem;
}

.rfq-info-icon {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.rfq-info-text h4 {
    font-size: 1.05rem;
    margin-bottom: 0.3rem;
}

.rfq-info-text p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* About Page (Kurumsal) Styles */
.corporate-hero {
    height: 400px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 50% 50%, var(--bg-accent) 0%, var(--bg-base) 100%);
    border-bottom: 1px solid var(--border);
}

.corporate-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.corp-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1.2rem;
}

.corp-text p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

.corp-img-box {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-premium);
    position: relative;
    overflow: hidden;
}

/* Footer Styling */
footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border);
    padding: 5rem 0 2rem 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 0.8fr 1.2fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-col h4 {
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-main);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.92rem;
}

.footer-links a:hover {
    color: var(--primary);
    transform: translateX(3px);
}

.footer-about p {
    color: var(--text-muted);
    font-size: 0.92rem;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-btn {
    width: 36px;
    height: 36px;
    background-color: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.social-btn:hover {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary-glow);
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-copy {
    font-size: 0.88rem;
    color: var(--text-muted);
}

/* Animations */
@keyframes pulse {
    0% {
        transform: scale(1) translate(0, 0);
        opacity: 0.8;
    }
    100% {
        transform: scale(1.1) translate(-20px, 20px);
        opacity: 1;
    }
}

/* Mobile responsive menu */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1100;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-main);
    transition: var(--transition-fast);
}

/* Mobile view adjustments */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3rem;
    }
    .hero-background {
        background: linear-gradient(to bottom, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.85) 100%),
                    url('../images/hero_bg.png') no-repeat center center / cover;
    }
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    .hero-content {
        margin: 0 auto;
    }
    .hero-actions {
        justify-content: center;
    }
    .hero-stats {
        justify-content: center;
        grid-template-columns: repeat(4, 1fr);
    }
    .stat-item {
        align-items: center;
    }
    .catalog-layout {
        grid-template-columns: 1fr;
    }
    .catalog-sidebar {
        position: static;
    }
    .detail-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .detail-gallery {
        position: static;
    }
    .detail-img-box {
        height: 350px;
    }
    .rfq-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .corporate-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--bg-surface);
        border-left: 1px solid var(--border);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        z-index: 1050;
        transition: var(--transition-smooth);
    }
    .nav-menu.open {
        right: 0;
    }
    .menu-toggle.open span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .menu-toggle.open span:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.open span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    .hero h1 {
        font-size: 2.3rem;
    }
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    .section-header h2 {
        font-size: 2rem;
    }
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    .rfq-form-card {
        padding: 2rem 1.5rem;
    }
    .rfq-form-grid {
        grid-template-columns: 1fr;
    }
    .rfq-full-width {
        grid-column: span 1;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Homepage Featured Products Marquee Slider Style */
.marquee-style {
    width: 100%;
    overflow: hidden;
    position: relative;
}

.marquee-track {
    display: flex;
    gap: 2rem;
    width: max-content;
    animation: marquee-scroll 35s linear infinite;
}

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

.marquee-track .product-card {
    width: 290px;
    flex-shrink: 0;
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
}

.marquee-track .product-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-light);
    box-shadow: 0 12px 24px rgba(160, 0, 24, 0.08);
}

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

/* Trust value props / Neden Quattro styling */
.why-quattro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2.2rem;
}

.why-quattro-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2.5rem 2rem;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.why-quattro-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-premium);
}

.why-quattro-icon {
    font-size: 2.2rem;
    color: var(--primary-light);
    margin-bottom: 1.2rem;
}

.why-quattro-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.8rem;
    color: var(--text-main);
}

.why-quattro-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Reference Projects styling */
.references-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.reference-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-premium);
}

.reference-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
}

.reference-img-box {
    height: 220px;
    overflow: hidden;
    position: relative;
    background-color: var(--bg-panel);
}

.reference-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.reference-card:hover .reference-img {
    transform: scale(1.05);
}

.reference-info {
    padding: 1.8rem;
}

.reference-tag {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.4rem;
    display: inline-block;
}

.reference-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.6rem;
    color: var(--text-main);
}

.reference-info p {
    font-size: 0.92rem;
    color: var(--text-muted);
    margin: 0;
}

/* Brand Logos styling */
.brand-logos-container {
    padding: 4rem 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background-color: var(--bg-panel);
}

.brand-logos-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 3rem;
    align-items: center;
    justify-items: center;
}

.brand-logo-item {
    font-family: var(--font-header);
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 0.05em;
    color: #a8a8b0;
    opacity: 0.65;
    transition: var(--transition-fast);
    text-transform: uppercase;
}

.brand-logo-item:hover {
    opacity: 1;
    color: var(--primary);
}

@media (max-width: 768px) {
    .brand-logos-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

/* FAQ Accordion Styling */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.faq-item {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-item:hover {
    border-color: var(--border-hover);
}

.faq-question {
    width: 100%;
    padding: 1.5rem 1.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-header);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-main);
    transition: var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    background-color: var(--bg-panel);
}

.faq-answer-content {
    padding: 1.5rem 1.8rem;
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
    border-top: 1px solid var(--border);
}

.faq-icon {
    font-size: 0.9rem;
    transition: transform 0.35s ease;
    color: var(--text-muted);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--primary);
}

.faq-item.active .faq-answer {
    max-height: 250px; /* adjusted for content */
}

/* Premium Product Showcase Redesign (Image 1 Style) */
.showcase-section {
    background-color: #000000;
    background-image: radial-gradient(circle at 50% 0%, rgba(110, 10, 20, 0.08) 0%, transparent 60%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    position: relative;
    overflow: hidden;
}

/* Featured Area */
.showcase-featured-area {
    position: relative;
    padding: 3rem 0;
    margin-bottom: 3rem;
}

.showcase-featured-slider {
    position: relative;
    width: 100%;
    min-height: 480px;
    background: linear-gradient(135deg, #0e0e11 0%, #070708 100%);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

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

.featured-slide {
    display: none;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: center;
    padding: 3.5rem;
    width: 100%;
    min-height: 480px;
}

.featured-slide.active {
    display: grid;
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.featured-slide-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    z-index: 5;
}

.showcase-featured-label {
    color: var(--primary-light);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 1rem;
}

.showcase-featured-title {
    font-size: 2.6rem;
    line-height: 1.15;
    font-weight: 800;
    color: #ffffff !important;
    margin-bottom: 1.5rem;
    font-family: var(--font-header);
}

.showcase-featured-desc {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.6) !important;
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* Inline specs */
.showcase-featured-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.featured-spec-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.featured-spec-icon {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-light);
    font-size: 0.95rem;
}

.featured-spec-text {
    display: flex;
    flex-direction: column;
}

.featured-spec-value {
    font-size: 0.9rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.2;
}

.featured-spec-label {
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.4);
}

.showcase-featured-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #ffffff !important;
    border: 1px solid var(--primary-glow);
    padding: 0.9rem 2.2rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(110, 10, 20, 0.4);
    cursor: pointer;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
}

.showcase-featured-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(110, 10, 20, 0.6), 0 0 10px rgba(168, 16, 30, 0.4);
}

/* Slide Right Visual */
.featured-slide-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.featured-visual-glow {
    position: absolute;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(168, 16, 30, 0.18) 0%, transparent 70%);
    z-index: 1;
    filter: blur(20px);
}

.featured-slide-visual img, .featured-slide-visual svg {
    max-width: 90%;
    max-height: 300px;
    object-fit: contain;
    z-index: 2;
    filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.7));
    transition: transform 0.5s ease;
}

.featured-slide-visual:hover img {
    transform: translateY(-5px) scale(1.02);
}

/* Slider navigation arrows */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    cursor: pointer;
    transition: var(--transition-fast);
    z-index: 10;
}

.slider-arrow:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--primary-light);
}

.slider-arrow.prev {
    left: 1.5rem;
}

.slider-arrow.next {
    right: 1.5rem;
}

/* Slider pagination dots */
.slider-dots {
    position: absolute;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.6rem;
    z-index: 10;
}

.slider-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: var(--transition-fast);
}

.slider-dot.active {
    width: 24px;
    border-radius: 4px;
    background-color: var(--primary-light);
}


/* Trust Bar */
.showcase-trust-bar {
    background-color: #080809;
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 1.8rem;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.trust-bar-item {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.trust-bar-icon {
    font-size: 1.8rem;
    color: var(--primary-light);
}

.trust-bar-text {
    display: flex;
    flex-direction: column;
}

.trust-bar-title {
    font-family: var(--font-header);
    font-weight: 700;
    font-size: 0.95rem;
    color: #ffffff;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.trust-bar-desc {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.5);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .featured-slide {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2.5rem;
        text-align: center;
    }
    .featured-slide-content {
        align-items: center;
    }
    .showcase-featured-specs {
        justify-content: center;
    }
    .featured-slide-visual {
        order: -1;
    }
    .showcase-trust-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 600px) {
    .showcase-trust-bar {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .showcase-featured-title {
        font-size: 2rem;
    }
    .featured-slide {
        padding: 1.5rem;
    }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}