/* Synergy-Apex Dark Theme Styles - Premium Black Edition */
:root {
    /* Core Colors */
    --bg-primary: #0A0505;
    --bg-secondary: #0f0a0a;
    --bg-tertiary: #1a1212;
    --bg-card: #141010;
    
    /* Brand Colors */
    --brand-primary: #ff5922;
    --brand-primary-hover: #ff7544;
    --brand-primary-glow: rgba(255, 89, 34, 0.3);
    
    /* Accent Colors */
    --accent-gold: #ffdd88;
    --accent-gold-dim: rgba(255, 221, 136, 0.3);
    
    /* Text Colors */
    --text-primary: #f0f0f5;
    --text-secondary: #b8b8d8;
    --text-muted: #7a7a8a;
    --text-light: #e8e8f0;
    
    /* Border & Divider */
    --border-gold: #ffdd88;
    --border-subtle: rgba(255, 221, 136, 0.15);
    --border-card: rgba(255, 221, 136, 0.2);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 30px rgba(255, 89, 34, 0.2);
    --shadow-gold: 0 0 20px rgba(255, 221, 136, 0.15);
    
    /* Radius */
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #0A0505 0%, #1a0f0f 50%, #0A0505 100%);
    --gradient-brand: linear-gradient(135deg, #ff5922 0%, #ff7544 100%);
    --gradient-card: linear-gradient(180deg, rgba(255,89,34,0.05) 0%, rgba(20,16,16,0.8) 100%);
    --gradient-border: linear-gradient(135deg, rgba(255,221,136,0.4) 0%, rgba(255,221,136,0.1) 50%, rgba(255,221,136,0.4) 100%);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-secondary);
    background: var(--bg-primary);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== HEADER ===== */
.header {
    background: rgba(10, 5, 5, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo img { height: 50px; width: auto; }

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--brand-primary);
}

.nav-list a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-brand);
    border-radius: 1px;
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 10px 0;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s;
    list-style: none;
    box-shadow: var(--shadow-lg);
}

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

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--text-secondary);
    border-left: 2px solid transparent;
}

.dropdown-menu a:hover {
    background: rgba(255, 89, 34, 0.1);
    color: var(--brand-primary);
    border-left-color: var(--brand-primary);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--accent-gold);
    transition: 0.3s;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-brand);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 89, 34, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #ff7544 0%, #ff8a5c 100%);
    box-shadow: 0 6px 25px rgba(255, 89, 34, 0.5);
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid var(--accent-gold);
    color: var(--accent-gold);
    background: transparent;
}

.btn-outline:hover {
    background: rgba(255, 221, 136, 0.1);
    box-shadow: var(--shadow-gold);
}

.btn-outline-light {
    border: 1px solid var(--text-primary);
    color: var(--text-primary);
    background: transparent;
}

.btn-outline-light:hover {
    background: rgba(240, 240, 245, 0.1);
    color: var(--brand-primary);
    border-color: var(--brand-primary);
}

.btn-lg { padding: 16px 32px; font-size: 1.1rem; }
.btn-full { width: 100%; }

/* ===== HERO SECTION ===== */
.hero {
    background: var(--gradient-hero);
    color: var(--text-primary);
    padding: 100px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(255, 89, 34, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(255, 89, 34, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content { 
    max-width: 800px; 
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #f0f0f5 0%, #ff5922 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.hero-buttons { display: flex; gap: 15px; flex-wrap: wrap; }

.hero-stats {
    background: rgba(255, 89, 34, 0.05);
    border-top: 1px solid var(--border-subtle);
    margin-top: 60px;
    padding: 40px 0;
    position: relative;
    z-index: 1;
}

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

.stat-item { text-align: center; }

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--brand-primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ===== SECTION STYLES ===== */
.section-padding { padding: 80px 0; }

.bg-light { 
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.bg-dark { 
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

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

.section-title {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-brand);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 50px;
    margin-top: 25px;
}

/* ===== CAPABILITIES GRID ===== */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.capability-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-card);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.capability-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-brand);
    opacity: 0;
    transition: opacity 0.3s;
}

.capability-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-glow);
}

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

.capability-card.featured {
    border: 1px solid var(--brand-primary);
    background: var(--gradient-card);
}

.featured-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: var(--gradient-brand);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.capability-icon {
    color: var(--brand-primary);
    margin-bottom: 20px;
}

.capability-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.capability-card p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.capability-list {
    list-style: none;
    margin-bottom: 20px;
}

.capability-list li {
    padding: 5px 0;
    color: var(--text-secondary);
}

.capability-list li:before {
    content: "✓ ";
    color: var(--brand-primary);
    font-weight: bold;
}

.link-arrow {
    color: var(--brand-primary);
    text-decoration: none;
    font-weight: 600;
    position: relative;
}

.link-arrow:hover {
    color: var(--brand-primary-hover);
}

/* ===== INDUSTRIES GRID ===== */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.industry-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.3s;
    border: 1px solid var(--border-subtle);
}

.industry-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-gold);
}

.industry-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.industry-card h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

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

/* ===== WHY US SECTION ===== */
.why-us-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.lead {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.features-list { display: flex; flex-direction: column; gap: 25px; }

.feature-item { display: flex; gap: 15px; }

.feature-icon {
    width: 30px;
    height: 30px;
    background: var(--gradient-brand);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 0 15px rgba(255, 89, 34, 0.3);
}

.feature-text h4 { 
    margin-bottom: 5px; 
    color: var(--text-primary);
}

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

.why-us-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-subtle);
}

/* ===== CASE STUDIES ===== */
.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-study-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-card);
    transition: all 0.3s;
}

.case-study-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-glow);
}

.case-study-image { 
    position: relative;
    overflow: hidden;
}

.case-study-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, var(--bg-card), transparent);
}

.case-study-image img { 
    width: 100%; 
    height: 200px; 
    object-fit: cover;
    transition: transform 0.3s;
}

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

.case-study-content { padding: 25px; }

.case-study-tag {
    display: inline-block;
    background: rgba(255, 89, 34, 0.15);
    color: var(--brand-primary);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 15px;
    border: 1px solid rgba(255, 89, 34, 0.3);
}

.case-study-card h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.case-study-card p {
    color: var(--text-muted);
    margin-bottom: 15px;
}

/* ===== CTA SECTION ===== */
.cta-section {
    background: linear-gradient(135deg, rgba(255,89,34,0.15) 0%, rgba(10,5,5,0.95) 100%);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-primary);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-brand);
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.cta-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.cta-buttons { display: flex; gap: 15px; justify-content: center; flex-wrap: wrap; }

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-subtle);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand img { margin-bottom: 20px; }

.footer-brand p { color: var(--text-muted); margin-bottom: 10px; }

.footer-brand a { 
    color: var(--text-secondary); 
    text-decoration: none;
    transition: color 0.3s;
}

.footer-brand a:hover {
    color: var(--brand-primary);
}

.footer-links h4 {
    font-size: 1rem;
    margin-bottom: 20px;
    color: var(--text-primary);
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--brand-primary);
}

.footer-links ul { list-style: none; }

.footer-links li { margin-bottom: 10px; }

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover { 
    color: var(--brand-primary);
}

.newsletter-form { display: flex; gap: 10px; }

.newsletter-form input {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.newsletter-form input::placeholder {
    color: var(--text-muted);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--brand-primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-subtle);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
}

/* ===== WHATSAPP FLOAT ===== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 25px;
    width: 56px;
    height: 56px;
    background: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.5), 0 0 0 4px rgba(37, 211, 102, 0.2);
    z-index: 9999;
    transition: all 0.3s ease;
    cursor: pointer;
}

.whatsapp-float svg {
    width: 28px;
    height: 28px;
    fill: white;
}

.whatsapp-float:hover { 
    transform: scale(1.1) translateY(-2px);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.7), 0 0 0 6px rgba(37, 211, 102, 0.3);
}

.whatsapp-float:active {
    transform: scale(0.95);
}

/* WhatsApp button pulse animation */
@keyframes whatsapp-pulse {
    0% {
        box-shadow: 0 4px 15px rgba(37, 211, 102, 0.5), 0 0 0 0 rgba(37, 211, 102, 0.4);
    }
    70% {
        box-shadow: 0 4px 15px rgba(37, 211, 102, 0.5), 0 0 0 12px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 4px 15px rgba(37, 211, 102, 0.5), 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

.whatsapp-float {
    animation: whatsapp-pulse 2s infinite;
}

/* ===== PAGE HEADER ===== */
.page-header {
    background: var(--bg-secondary);
    padding: 60px 0;
    text-align: center;
    border-bottom: 1px solid var(--border-subtle);
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.breadcrumb {
    display: flex;
    gap: 10px;
    justify-content: center;
    color: var(--text-muted);
}

.breadcrumb a { 
    color: var(--brand-primary); 
    text-decoration: none;
}

/* ===== SERVICE PAGES ===== */
.service-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.service-hero-image {
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-lg);
}

.service-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ===== ABOUT PAGE ===== */
.about-image {
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-lg);
}

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

/* ===== CAPABILITY DETAIL ===== */
.capability-detail-image {
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-lg);
}

.capability-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.capability-detail-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 60px;
}

.capability-detail-item.reverse {
    direction: rtl;
}

.capability-detail-item.reverse > * {
    direction: ltr;
}

.capability-detail-item h3 {
    color: var(--text-primary);
    margin-bottom: 20px;
}

.capability-detail-item p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.capability-detail-item ul {
    list-style: none;
    margin-bottom: 20px;
}

.capability-detail-item li {
    padding: 8px 0;
    color: var(--text-muted);
    position: relative;
    padding-left: 20px;
}

.capability-detail-item li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--brand-primary);
}

/* ===== GALLERY ===== */
.gallery-item {
    aspect-ratio: 1/1;
    overflow: hidden;
    border-radius: var(--radius);
    border: 1px solid var(--border-subtle);
    transition: all 0.3s;
}

.gallery-item:hover {
    transform: translateY(-5px);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-gold);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* ===== PRODUCTS & MATERIALS ===== */
.capabilities-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.capability-box {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border-card);
    transition: all 0.3s;
}

.capability-box:hover {
    border-color: var(--border-gold);
    box-shadow: var(--shadow-gold);
}

.capability-box h3 { 
    margin-bottom: 10px; 
    color: var(--text-primary);
}

.capability-box p {
    color: var(--text-muted);
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.material-category {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border-card);
}

.material-category h4 {
    color: var(--text-primary);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-subtle);
}

.material-category ul { list-style: none; margin-top: 15px; }

.material-category li { 
    padding: 5px 0; 
    color: var(--text-muted);
    position: relative;
    padding-left: 15px;
}

.material-category li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--brand-primary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.product-card {
    background: var(--bg-card);
    padding: 25px;
    border-radius: var(--radius);
    border: 1px solid var(--border-card);
    transition: all 0.3s;
}

.product-card:hover {
    border-color: var(--border-gold);
    transform: translateY(-3px);
}

.product-card h3 { 
    font-size: 1.1rem; 
    margin-bottom: 10px; 
    color: var(--text-primary);
}

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

.applications-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
}

.application-item {
    background: var(--bg-card);
    padding: 15px 30px;
    border-radius: 30px;
    border: 1px solid var(--border-card);
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.application-item:hover {
    border-color: var(--brand-primary);
    color: var(--brand-primary);
    box-shadow: var(--shadow-glow);
}

/* ===== OPTICAL GALLERY ===== */
.optical-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.optical-gallery .gallery-item {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

.optical-gallery .gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.optical-gallery .gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

/* ===== INDUSTRIES PAGE ===== */
.industry-section {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-card);
    margin-bottom: 30px;
    transition: all 0.3s;
}

.industry-section:hover {
    border-color: var(--border-gold);
}

.industry-section h2 {
    color: var(--text-primary);
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 15px;
}

.industry-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--gradient-brand);
}

.industry-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.industry-content h4 { 
    margin-bottom: 15px; 
    color: var(--brand-primary);
}

.industry-content ul { list-style: none; }

.industry-content li {
    padding: 8px 0;
    color: var(--text-muted);
    position: relative;
    padding-left: 20px;
}

.industry-content li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--brand-primary);
}

/* ===== CASE STUDIES PAGE ===== */
.case-studies-list { 
    display: flex; 
    flex-direction: column; 
    gap: 30px; 
}

.case-study-full {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-card);
    transition: all 0.3s;
}

.case-study-full:hover {
    border-color: var(--border-gold);
    box-shadow: var(--shadow-md);
}

.case-study-full h3 {
    color: var(--text-primary);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.case-study-full h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--gradient-brand);
}

.case-study-full p { 
    margin-bottom: 15px; 
    color: var(--text-secondary);
}

.case-study-full strong {
    color: var(--brand-primary);
}

/* ===== RESOURCES PAGE ===== */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.resource-card {
    background: var(--bg-card);
    padding: 25px;
    border-radius: var(--radius);
    border: 1px solid var(--border-card);
    transition: all 0.3s;
}

.resource-card:hover { 
    transform: translateY(-5px);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-gold);
}

.resource-tag {
    display: inline-block;
    background: rgba(255, 89, 34, 0.15);
    color: var(--brand-primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    margin-bottom: 15px;
    border: 1px solid rgba(255, 89, 34, 0.3);
}

.resource-card h4 { 
    margin-bottom: 10px; 
    color: var(--text-primary);
}

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

/* ===== CONTACT PAGE ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-methods { 
    display: flex; 
    flex-direction: column; 
    gap: 25px; 
    margin: 30px 0; 
}

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

.contact-icon { 
    font-size: 1.5rem; 
}

.contact-details h4 { 
    margin-bottom: 5px; 
    color: var(--text-primary);
}

.contact-details a { 
    color: var(--brand-primary); 
    text-decoration: none;
}

.contact-details a:hover {
    color: var(--brand-primary-hover);
}

.contact-form-wrapper {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-card);
}

.contact-form-wrapper h3 { 
    margin-bottom: 10px; 
    color: var(--text-primary);
}

.contact-form-wrapper > p {
    color: var(--text-muted);
    margin-bottom: 25px;
}

.contact-form { margin-top: 25px; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    font-family: inherit;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--brand-primary);
    box-shadow: 0 0 10px rgba(255, 89, 34, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.form-checkbox input { 
    width: auto; 
    margin-top: 4px;
}

.form-checkbox label { 
    margin-bottom: 0; 
    font-weight: normal;
    color: var(--text-muted);
}

/* ===== FAQ ===== */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.faq-item {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border-card);
    transition: all 0.3s;
}

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

.faq-item h4 {
    color: var(--text-primary);
    margin-bottom: 15px;
    position: relative;
    padding-left: 20px;
}

.faq-item h4::before {
    content: 'Q';
    position: absolute;
    left: 0;
    color: var(--brand-primary);
    font-weight: 700;
}

.faq-item p { 
    color: var(--text-muted);
    padding-left: 20px;
}

/* ===== XINLIPU ABOUT PAGE ===== */
.xinlipu-meaning { margin: 30px 0; }

.meaning-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-card);
    transition: all 0.3s;
}

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

.meaning-item .character {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    min-width: 60px;
    text-align: center;
}

.meaning-text h4 {
    color: var(--text-primary);
    margin-bottom: 5px;
}

.meaning-text p {
    color: var(--text-muted);
    margin: 0;
}

.philosophy-quote {
    font-size: 1.3rem;
    font-style: italic;
    color: var(--brand-primary);
    border-left: 3px solid var(--brand-primary);
    padding: 15px 25px;
    margin: 30px 0;
    background: rgba(255, 89, 34, 0.05);
    border-radius: 0 var(--radius) var(--radius) 0;
}

/* ===== VALUES SECTION ===== */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.value-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border-card);
    text-align: center;
    transition: all 0.3s;
}

.value-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-gold);
    box-shadow: var(--shadow-gold);
}

.value-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.value-card h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
}

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

/* ===== QUALITY SECTION ===== */
.quality-section {
    max-width: 800px;
    margin: 0 auto;
}

.quality-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.quality-feature h4 {
    color: var(--text-primary);
    margin-bottom: 8px;
}

.quality-feature h4::before {
    content: '✓ ';
    color: var(--brand-primary);
}

.quality-feature p {
    color: var(--text-muted);
}

/* ===== PROCESS GRID ===== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.process-item {
    background: var(--bg-card);
    padding: 25px;
    border-radius: var(--radius);
    border: 1px solid var(--border-card);
    transition: all 0.3s;
}

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

.process-item h4 {
    color: var(--text-primary);
    margin-bottom: 10px;
    position: relative;
    padding-bottom: 10px;
}

.process-item h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--gradient-brand);
}

.process-item p {
    color: var(--text-muted);
}

/* ===== MATERIAL CARDS ===== */
.material-card {
    background: var(--bg-card);
    padding: 25px;
    border-radius: var(--radius);
    border: 1px solid var(--border-card);
    transition: all 0.3s;
}

.material-card:hover {
    border-color: var(--border-gold);
    transform: translateY(-3px);
}

.material-card h4 {
    color: var(--text-primary);
    margin-bottom: 10px;
}

.material-card p {
    color: var(--text-muted);
}

/* ===== TOLERANCE INFO ===== */
.tolerance-info {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-card);
    text-align: center;
}

.tolerance-highlight {
    margin-bottom: 30px;
}

.tolerance-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tolerance-label {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.tolerance-info p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.quality-list {
    list-style: none;
    display: inline-block;
    text-align: left;
}

.quality-list li {
    padding: 8px 0;
    color: var(--text-muted);
    position: relative;
    padding-left: 25px;
}

.quality-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--brand-primary);
    font-weight: bold;
}

/* ===== CONTACT CTA ===== */
.contact-cta {
    background: rgba(255, 89, 34, 0.1);
    border: 1px solid rgba(255, 89, 34, 0.3);
    border-radius: var(--radius);
    padding: 20px;
    margin-top: 30px;
}

.contact-cta h4 {
    color: var(--brand-primary);
    margin-bottom: 10px;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .capabilities-grid,
    .products-grid,
    .resources-grid { 
        grid-template-columns: repeat(2, 1fr); 
    }
    
    .optical-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid { 
        grid-template-columns: 1fr 1fr; 
    }
    
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle { display: flex; }
    .main-nav { display: none; }
    
    .hero-title { 
        font-size: 2rem; 
    }
    
    .stats-grid { 
        grid-template-columns: repeat(2, 1fr); 
    }
    
    .capabilities-grid,
    .industries-grid,
    .products-grid,
    .case-studies-grid,
    .resources-grid,
    .faq-grid { 
        grid-template-columns: 1fr; 
    }
    
    .why-us-grid,
    .service-hero,
    .contact-grid { 
        grid-template-columns: 1fr; 
    }
    
    .service-hero-image { order: -1; }
    
    .capabilities-list { 
        grid-template-columns: 1fr; 
    }
    
    .materials-grid { 
        grid-template-columns: 1fr; 
    }
    
    .industry-content { 
        grid-template-columns: 1fr; 
    }
    
    .capability-detail-item {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .capability-detail-item.reverse {
        direction: ltr;
    }
    
    .form-row { 
        grid-template-columns: 1fr; 
    }
    
    .footer-grid { 
        grid-template-columns: 1fr; 
    }
    
    .cta-buttons { 
        flex-direction: column; 
    }
    
    .hero-buttons { 
        flex-direction: column; 
    }
    
    .meaning-item {
        flex-direction: column;
        text-align: center;
    }
    
    .meaning-item .character {
        font-size: 2.5rem;
    }
    
    .optical-gallery {
        grid-template-columns: 1fr;
    }
    
    .optical-gallery .gallery-item img {
        height: 300px;
    }
    
    .quality-features {
        grid-template-columns: 1fr;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== MT-4 UTILITY ===== */
.mt-4 {
    margin-top: 2rem;
}