/* ========================================
   JIANENG Valve - Industrial B2B Website
   Modern, Professional, Responsive
   ======================================== */

/* CSS Variables - JIANENG Brand Colors */
:root {
    /* Primary Colors */
    --primary-dark: #113E77;
    --primary-darker: #0a2850;
    --primary-light: #1a4d8c;

    /* Accent Colors */
    --accent-red: #E03D3D;
    --accent-red-hover: #C53636;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #F6FAFF;
    --color-gray-100: #E8F0F8;
    --color-gray-200: #D4E7FF;
    --color-gray-300: #B8D4F0;
    --color-gray-400: #8AA8CC;
    --color-gray-500: #5C7A99;
    --color-gray-600: #4A5F7A;
    --color-gray-700: #3D4F66;
    --color-gray-800: #303030;
    --color-gray-900: #1a1a1a;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Barlow', sans-serif;

    /* Spacing */
    --section-padding: 6rem;
    --container-max-width: 1200px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    color: var(--primary-dark);
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(2rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--accent-red);
    color: var(--color-white);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

.btn-outline:hover {
    background-color: var(--color-white);
    color: var(--primary-dark);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: transparent;
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.header.scrolled .logo-text,
.header.scrolled .nav a {
    color: var(--primary-dark);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-white);
}

.header.scrolled .logo {
    color: var(--primary-dark);
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-red);
    color: var(--color-white);
    border-radius: 4px;
}

.logo-text {
    color: inherit;
}

/* Logo Image Style */
.logo img {
    height: 65px;
    width: auto;
    display: block;
}

.logo-img {
    height: 65px;
    width: auto;
    display: block;
    filter: brightness(0) invert(1); /* Make logo white on transparent background */
    transition: filter var(--transition-base);
}

.header.scrolled .logo-img {
    filter: none; /* Show original colors when scrolled */
}

/* Navigation */
.nav-list {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-red);
    transition: width var(--transition-base);
}

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

/* Dropdown */
.has-dropdown {
    position: relative;
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background-color: var(--color-white);
    border-radius: 4px;
    box-shadow: var(--shadow-xl);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
}

.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--color-gray-700);
    text-transform: none;
}

.dropdown a:hover {
    background-color: var(--color-gray-50);
    color: var(--accent-red);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-white);
    transition: all var(--transition-base);
}

.header.scrolled .mobile-menu-toggle span {
    background-color: var(--primary-dark);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
    padding: 120px 0 80px;
}

/* Multi-layer Background System */
.hero-bg-layers {
    position: absolute;
    inset: 0;
    z-index: 0;
}

/* Layer 1: Factory Image */
.hero-bg-image {
    position: absolute;
    inset: 0;
    background-image: url('../images/company/company-main.jpg');
    background-size: cover;
    background-position: center;
    transform: scale(1.1);
    animation: heroZoom 20s ease-out forwards;
}

@keyframes heroZoom {
    from { transform: scale(1.1); }
    to { transform: scale(1); }
}

/* Layer 2: Gradient Overlay */
.hero-bg-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(10, 40, 80, 0.95) 0%,
        rgba(17, 62, 119, 0.85) 50%,
        rgba(26, 77, 140, 0.75) 100%
    );
}

/* Layer 3: Technical Pattern */
.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
}

/* Layer 4: Dynamic Spotlight */
.hero-spotlight {
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse 80% 50% at 70% 50%,
        rgba(224, 61, 61, 0.08) 0%,
        transparent 60%
    );
    animation: spotlightPulse 8s ease-in-out infinite;
}

@keyframes spotlightPulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
}

/* Hero Grid Layout */
.hero-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Left Column: Content */
.hero-content {
    animation: fadeInUp 1s ease-out;
}

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

/* Certification Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--color-white);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.badge-icon {
    color: var(--accent-red);
    font-size: 1rem;
}

/* Hero Title with Line Animation */
.hero-title {
    color: var(--color-white);
    margin-bottom: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.title-line {
    display: block;
    font-size: clamp(2.5rem, 5vw, 4rem);
    opacity: 0;
    animation: slideInLeft 0.8s ease-out forwards;
}

.title-line:first-child {
    animation-delay: 0.3s;
}

.title-line:last-child {
    animation-delay: 0.5s;
}

.title-line em {
    color: var(--accent-red);
    font-style: normal;
    position: relative;
}

.title-line em::after {
    content: '';
    position: absolute;
    bottom: 0.1em;
    left: 0;
    width: 100%;
    height: 0.15em;
    background: var(--accent-red);
    opacity: 0.3;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-subtitle {
    color: var(--color-gray-200);
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    margin-bottom: 2rem;
    line-height: 1.7;
    max-width: 500px;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

/* Enhanced CTA Buttons */
.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.8s forwards;
}

.btn-icon {
    width: 20px;
    height: 20px;
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

.btn-primary:hover .btn-icon {
    transform: translateX(4px);
}

/* Trust Indicators */
.hero-trust {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 1s forwards;
}

.trust-label {
    font-size: 0.75rem;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.trust-logos {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.trust-logo {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    color: rgba(255,255,255,0.5);
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
}

.trust-logo:hover {
    color: var(--color-white);
}

/* Right Column: Visual Showcase */
.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-product-showcase {
    position: relative;
    width: 100%;
    max-width: 500px;
}

/* Main Product Image */
.showcase-main {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow:
        0 50px 100px -20px rgba(0,0,0,0.4),
        0 30px 60px -30px rgba(0,0,0,0.3);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.showcase-main:hover {
    transform: perspective(1000px) rotateY(0) rotateX(0);
}

.showcase-image {
    width: 100%;
    height: auto;
    display: block;
}

/* Glow Effect Behind Product */
.showcase-glow {
    position: absolute;
    inset: -20px;
    background: radial-gradient(
        circle at center,
        rgba(224, 61, 61, 0.3) 0%,
        transparent 70%
    );
    filter: blur(40px);
    z-index: -1;
    animation: glowPulse 4s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

/* Floating Cards */
.showcase-float-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    padding: 1rem 1.25rem;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    animation: float 6s ease-in-out infinite;
}

.card-top {
    top: 10%;
    right: -20px;
    animation-delay: 0s;
}

.card-bottom {
    bottom: 15%;
    left: -30px;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.float-card-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-red);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.float-card-icon svg {
    width: 20px;
    height: 20px;
}

.float-card-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1;
}

.float-card-label {
    font-size: 0.75rem;
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Stats Bar at Bottom */
.hero-stats-bar {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 4rem;
    padding: 2rem;
    background: rgba(17, 62, 119, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.15);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 1.2s forwards;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* Hero Stats Bar - Individual Stat Cards */
.hero-stats-bar .stat-item {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
    flex-wrap: wrap;
    justify-content: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    min-width: 140px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-stats-bar .stat-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.hero-stats-bar .stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1;
}

.hero-stats-bar .stat-suffix {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-red);
}

.hero-stats-bar .stat-desc {
    width: 100%;
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-gray-600);
    margin-top: 0.5rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Fallback for non-specific stat-item */
.stat-item {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
    flex-wrap: wrap;
    justify-content: center;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-suffix {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: #E03D3D;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-desc {
    width: 100%;
    text-align: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 0.25rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.2);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-visual {
        order: 0;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-trust {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .trust-logos {
        justify-content: center;
    }

    .showcase-main {
        max-width: 400px;
        margin: 0 auto;
    }

    .showcase-float-card {
        display: none;
    }

    .hero-stats-bar {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .stat-divider {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 100px 0 60px;
    }

    .hero-grid {
        padding: 0 1rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-lg {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .hero-stats-bar {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        padding: 1rem;
        background: transparent;
        border: none;
        box-shadow: none;
    }

    .hero-stats-bar .stat-item {
        padding: 1.25rem 1rem;
        min-width: auto;
    }

    .hero-stats-bar .stat-value {
        font-size: 1.75rem;
    }

    .hero-stats-bar .stat-suffix {
        font-size: 1.25rem;
    }

    .hero-stats-bar .stat-desc {
        font-size: 0.7rem;
    }

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

/* Legacy Support - Keep Old Classes */
.hero-bg {
    display: none;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-start;
    margin-bottom: 4rem;
}

.stat {
    text-align: left;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-white);
    line-height: 1;
}

.stat-label {
    display: block;
    color: var(--color-gray-300);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}


/* Section Base */
.section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-red);
    margin-bottom: 1rem;
}

.section-title {
    margin-bottom: 1rem;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--color-gray-600);
}

/* Products Section */
.section-products {
    background-color: var(--color-gray-50);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.product-image {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-200) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform var(--transition-slow);
}

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

.product-content {
    padding: 1.25rem 1.5rem 1.5rem;
}

.product-content h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-dark);
}

.product-desc {
    color: var(--color-gray-600);
    font-size: 0.9375rem;
    opacity: 0;
    max-height: 0;
    margin: 0;
    overflow: hidden;
    transition: opacity 0.4s ease, max-height 0.4s ease, margin 0.4s ease;
}

.product-card:hover .product-desc {
    opacity: 1;
    max-height: 80px;
    margin-bottom: 0.75rem;
}

.product-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-red);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.product-card:hover .product-link {
    color: var(--accent-red-hover);
}

/* Client Logo Carousel */
.client-carousel-track {
    display: flex;
    width: max-content;
    animation: scrollCarousel 40s linear infinite;
}

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

.client-carousel-group {
    display: flex;
    align-items: center;
    gap: 4rem;
    padding: 0 2rem;
    flex-shrink: 0;
}

.client-carousel-item {
    height: 50px;
    width: auto;
    max-width: 160px;
    object-fit: contain;
    transition: transform var(--transition-base);
    user-select: none;
    flex-shrink: 0;
}

.client-carousel-item:hover {
    transform: scale(1.1);
}

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

@media (max-width: 767px) {
    .client-carousel-group {
        gap: 2.5rem;
    }
    .client-carousel-item {
        font-size: 1rem;
    }
}

/* Industries Section */
.section-industries {
    background-color: var(--color-white);
}

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

.industry-card {
    padding: 2.5rem;
    background-color: var(--color-gray-50);
    border-radius: 8px;
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.industry-card:hover {
    background-color: var(--color-white);
    border-color: var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.industry-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    color: var(--accent-red);
}

.industry-icon svg {
    width: 100%;
    height: 100%;
}

.industry-card h3 {
    margin-bottom: 0.75rem;
    color: var(--primary-dark);
}

.industry-card p {
    color: var(--color-gray-600);
    font-size: 0.9375rem;
    margin: 0;
}

/* Why Us Section */
.section-why-us {
    background-color: var(--primary-dark);
    color: var(--color-white);
}

.why-us-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.section-why-us .section-tag {
    color: var(--accent-red);
}

.section-why-us .section-title {
    color: var(--color-white);
    margin-bottom: 2.5rem;
}

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

.feature {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background-color: rgba(255,255,255,0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-red);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-text h3 {
    color: var(--color-white);
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.feature-text p {
    color: var(--color-gray-300);
    font-size: 0.9375rem;
    margin: 0;
}

.why-us-image {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
}

.why-us-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    left: -20px;
    background-color: var(--accent-red);
    color: var(--color-white);
    padding: 1.5rem 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.badge-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.badge-text {
    display: block;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Certificates Section */
.section-certificates {
    background-color: var(--color-gray-50);
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.certificate-item {
    background-color: var(--color-white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.certificate-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.certificate-item img {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    object-fit: contain;
}

.certificate-item span {
    display: block;
    font-weight: 600;
    color: var(--primary-dark);
}

/* Stats Section */
.section-stats {
    padding: 5rem 0;
}

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

.stat-item {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--color-white);
    border-radius: 12px;
    border-bottom: 4px solid var(--primary-dark);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1;
}

.stat-plus {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-red);
    vertical-align: top;
    margin-left: 0.25rem;
}

.stat-label {
    display: block;
    margin-top: 0.75rem;
    color: var(--color-gray-600);
    font-size: 0.95rem;
    font-weight: 500;
}

@media (max-width: 992px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    .stat-number {
        font-size: 2.5rem;
    }
}

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

/* Enhanced Certificates Showcase */
.certificates-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.cert-card {
    background-color: var(--color-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

.cert-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.cert-image {
    height: 180px;
    background: var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    overflow: hidden;
}

.cert-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform var(--transition-base);
}

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

.cert-info {
    padding: 1.5rem;
    text-align: center;
}

.cert-info h4 {
    color: var(--primary-dark);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.cert-info p {
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

.cert-cta {
    text-align: center;
}

/* Inquiry Bar Styles */
.inquiry-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 2.5rem;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
    color: white;
    border-radius: 12px;
    margin-top: 3rem;
    box-shadow: var(--shadow-lg);
}

.inquiry-content h4 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.inquiry-content p {
    color: var(--color-gray-300);
    margin: 0;
}

.inquiry-bar .btn {
    background: var(--accent-red);
    border-color: var(--accent-red);
    padding: 1rem 2rem;
    font-size: 1rem;
}

.inquiry-bar .btn:hover {
    background: var(--accent-red-hover);
    border-color: var(--accent-red-hover);
}

@media (max-width: 768px) {
    .inquiry-bar {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    padding: 2rem;
    overflow: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    max-width: 90vw;
    max-height: 90vh;
    text-align: center;
}

.modal-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 8px;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 48px;
    height: 48px;
    background: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--accent-red);
    color: white;
}

.modal-caption {
    text-align: center;
    color: white;
    margin-top: 1rem;
    font-size: 1.1rem;
}

/* CTA Section */
.section-cta {
    background: linear-gradient(135deg, var(--accent-red) 0%, var(--accent-red-hover) 100%);
    padding: 5rem 0;
}

.cta-content {
    text-align: center;
    color: var(--color-white);
}

.cta-content h2 {
    color: var(--color-white);
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.cta-actions .btn-outline {
    border-color: var(--color-white);
}

.cta-actions .btn-outline:hover {
    background-color: var(--color-white);
    color: var(--accent-red);
}

/* Footer */
.footer {
    background-color: var(--primary-darker);
    color: var(--color-gray-300);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand p {
    font-size: 0.9375rem;
    line-height: 1.7;
}

.footer h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-red);
}

.footer-contact p {
    font-size: 0.9375rem;
    margin-bottom: 0.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-links a {
    width: 36px;
    height: 36px;
    background-color: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

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

.social-links svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    :root {
        --section-padding: 4rem;
    }

    .nav {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        padding: 1.5rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        box-shadow: var(--shadow-lg);
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        gap: 1rem;
    }

    .nav a {
        color: var(--primary-dark);
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: var(--color-gray-50);
        margin-top: 0.5rem;
    }

    .why-us-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .hero-content {
        text-align: center;
        margin: 0 auto;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .industries-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

    .experience-badge {
        position: relative;
        bottom: auto;
        left: auto;
        margin-top: 1rem;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ========================================
   SEO & ACCESSIBILITY ENHANCEMENTS
   ======================================== */

/* Breadcrumb Navigation */
.breadcrumb {
    padding: 1rem 0;
    background: transparent;
    font-size: 0.875rem;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    color: var(--color-gray-400);
    margin-left: 0.5rem;
}

.breadcrumb-link {
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

.breadcrumb-link:hover {
    color: var(--accent-red);
}

.breadcrumb-current {
    color: var(--primary-dark);
    font-weight: 500;
}

/* ========================================
   PAGE HEADER - Enhanced Design with Background Images
   ======================================== */
.page-header {
    position: relative;
    padding: 10rem 0 6rem;
    text-align: center;
    color: white;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-darker) 0%, var(--primary-dark) 50%, var(--primary-light) 100%);
}

/* Background Image Layer */
.page-header-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

/* Gradient Overlay for Text Readability */
.page-header-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(10, 40, 80, 0.92) 0%,
        rgba(17, 62, 119, 0.88) 50%,
        rgba(26, 77, 140, 0.85) 100%
    );
    z-index: 1;
}

/* Decorative Elements Layer */
.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(224, 61, 61, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.03) 0%, transparent 40%);
    z-index: 2;
    pointer-events: none;
}

/* Technical Pattern Overlay */
.page-header::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h100v100H0z' fill='none'/%3E%3Cpath d='M0 50h100M50 0v100' stroke='%23ffffff' stroke-opacity='0.02' stroke-width='1'/%3E%3C/svg%3E");
    opacity: 0.4;
    z-index: 2;
    pointer-events: none;
}

.page-header .container {
    position: relative;
    z-index: 3;
}

.page-header h1 {
    color: white;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.page-header h1 em {
    color: var(--accent-red);
    font-style: normal;
}

.page-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.2);
}

/* Page Header with Image - specific styles */
.page-header-has-image {
    background: none;
}

.page-header-has-image .page-header-overlay {
    background: linear-gradient(
        135deg,
        rgba(10, 40, 80, 0.88) 0%,
        rgba(17, 62, 119, 0.82) 50%,
        rgba(26, 77, 140, 0.78) 100%
    );
}

/* Breadcrumb - Hidden by default, kept for SEO/accessibility */
.breadcrumb {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Breadcrumb visible only for screen readers */
.breadcrumb-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Skip to Content Link (Accessibility) */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-red);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0 0 4px 4px;
    z-index: 10000;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
    transition: top var(--transition-base);
}

.skip-link:focus {
    top: 0;
}

/* Semantic HTML5 Elements */
main {
    display: block;
}

article {
    display: block;
}

/* Image Optimization */
img[src$=".jpg"],
img[src$=".jpeg"],
img[src$=".png"] {
    image-rendering: -webkit-optimize-contrast;
}

/* Focus Visible for Keyboard Navigation */
:focus-visible {
    outline: 2px solid var(--accent-red);
    outline-offset: 2px;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .hero-actions,
    .btn {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
    }

    a {
        text-decoration: underline;
        color: #000;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 10pt;
    }
}

/* Schema.org Microdata Support */
[itemtype] {
    display: block;
}

/* ========================================
   Product Detail Page Enhancements
   Enhanced Product Showcase Styles
   ======================================== */

/* Multi-Image Gallery */
.product-gallery {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.product-gallery-main {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: white;
    aspect-ratio: 4/3;
}

.product-gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-gallery-main:hover img {
    transform: scale(1.02);
}

.product-gallery-thumbs {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.gallery-thumb {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition-fast);
    background: white;
    box-shadow: var(--shadow-sm);
}

.gallery-thumb:hover {
    border-color: var(--color-gray-300);
    transform: translateY(-2px);
}

.gallery-thumb.active {
    border-color: var(--primary-dark);
    box-shadow: 0 0 0 3px rgba(17, 62, 119, 0.1);
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Quick Inquiry Button on Image */
.gallery-quick-cta {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-base);
}

.product-gallery-main:hover .gallery-quick-cta {
    opacity: 1;
    transform: translateY(0);
}

.gallery-quick-cta .btn {
    background: var(--accent-red);
    border-color: var(--accent-red);
    padding: 0.75rem 1.25rem;
    font-size: 0.875rem;
    box-shadow: 0 4px 12px rgba(224, 61, 61, 0.4);
}

/* Feature Tags */
.product-feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.875rem;
    background: linear-gradient(135deg, var(--color-gray-50) 0%, white 100%);
    border: 1px solid var(--color-gray-200);
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.feature-tag:hover {
    background: var(--primary-dark);
    color: white;
    border-color: var(--primary-dark);
    transform: translateY(-1px);
}

.feature-tag svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.feature-tag.primary {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
    color: white;
    border-color: var(--primary-dark);
}

.feature-tag.highlight {
    background: linear-gradient(135deg, #fef3f3 0%, white 100%);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

/* Certification Badges */
.product-certifications {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    margin: 1.25rem 0;
    padding: 1rem;
    background: var(--color-gray-50);
    border-radius: 8px;
    border-left: 3px solid var(--accent-red);
}

.cert-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: white;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-gray-700);
    box-shadow: var(--shadow-sm);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.cert-badge svg {
    width: 12px;
    height: 12px;
    color: var(--accent-red);
}

/* Card-Style Specs */
.specs-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.spec-card {
    background: white;
    border-radius: 10px;
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.spec-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary-light));
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.spec-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

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

.spec-card-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.spec-card-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-800);
    line-height: 1.4;
}

.spec-card-icon {
    width: 32px;
    height: 32px;
    background: var(--color-gray-100);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
}

.spec-card-icon svg {
    width: 16px;
    height: 16px;
    color: var(--primary-dark);
}

/* Application Icons */
.product-applications {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 1rem 0;
}

.app-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: white;
    border: 1px solid var(--color-gray-200);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.app-tag:hover {
    border-color: var(--primary-dark);
    color: var(--primary-dark);
    box-shadow: var(--shadow-sm);
}

.app-tag svg {
    width: 16px;
    height: 16px;
    color: var(--accent-red);
}

/* Enhanced Short Description */
.product-short-desc-enhanced {
    font-size: 1.1rem;
    color: var(--color-gray-600);
    line-height: 1.7;
    padding: 1.25rem;
    background: linear-gradient(135deg, var(--color-gray-50) 0%, white 100%);
    border-left: 4px solid var(--primary-dark);
    border-radius: 8px;
    position: relative;
}

.product-short-desc-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 100%;
    background: linear-gradient(90deg, rgba(17, 62, 119, 0.03) 0%, transparent 100%);
    pointer-events: none;
}

/* Product Content Sections */
.product-content-section {
    margin-bottom: 1.5rem;
}

.product-content-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.product-content-section h4 svg {
    width: 18px;
    height: 18px;
    color: var(--accent-red);
}

/* Sticky Inquiry Bar */
.inquiry-bar-sticky {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
    padding: 1rem 1.5rem;
    z-index: 100;
    transform: translateY(100%);
    transition: transform var(--transition-base);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.inquiry-bar-sticky.visible {
    transform: translateY(0);
}

.inquiry-bar-sticky .product-name {
    font-weight: 600;
    color: var(--color-gray-800);
    font-size: 0.9375rem;
}

.inquiry-bar-sticky .btn {
    background: var(--accent-red);
    border-color: var(--accent-red);
    white-space: nowrap;
}

@media (max-width: 640px) {
    .inquiry-bar-sticky {
        flex-direction: column;
        padding: 1rem;
        gap: 0.75rem;
    }

    .inquiry-bar-sticky .product-name {
        font-size: 0.875rem;
        text-align: center;
    }

    .inquiry-bar-sticky .btn {
        width: 100%;
    }
}

/* Responsive Adjustments */
@media (max-width: 992px) {
    .specs-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-gallery-thumbs {
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .specs-cards {
        grid-template-columns: 1fr;
    }

    .gallery-thumb {
        width: 64px;
        height: 64px;
    }

    .feature-tag {
        font-size: 0.75rem;
        padding: 0.375rem 0.625rem;
    }

    .cert-badge {
        font-size: 0.6875rem;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .btn-primary {
        border: 2px solid currentColor;
    }

    .nav a::after {
        height: 3px;
    }
}