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

:root {
    --dark-bg: #1A202C;
    --light-bg: #F8F9FA;
    --white: #FFFFFF;
    --dark-text: #2D3748;
    --accent-orange: #FF8C42;
    --accent-blue: #3182CE;
    --border-color: rgba(255, 255, 255, 0.1);
    --text-light: rgba(255, 255, 255, 0.9);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
}


/* Header */
.header {
    background: var(--white);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-bottom: 2px solid #2D3748;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    position: relative;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    gap: 4px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: #374151;
    border-radius: 2px;
    transition: all 0.3s;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: -120px;
    text-decoration: none;
    color: inherit;
}

.logo:hover {
    opacity: 0.8;
}

.logo-image {
    width: 200px;
    height: auto;
    flex-shrink: 0;
    object-fit: contain;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.logo-main {
    font-weight: 700;
    font-size: 1.1rem;
    line-height: 1.2;
}

.logo-text-dark {
    color: #1E40AF;
}

.logo-text-light {
    color: #3B82F6;
}

.logo-sub {
    font-weight: 400;
    font-size: 0.75rem;
    color: #6B7280;
    line-height: 1.2;
}

.nav {
    display: flex;
    gap: 2rem;
    flex: 1;
    justify-content: center;
}

.nav a {
    color: #6B7280;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

.nav a:hover {
    color: #374151;
    background: rgba(0, 0, 0, 0.02);
}

.nav a.active {
    color: #374151;
    background: #F3F4F6;
}

.btn-quote {
    background: #2D3748;
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
    font-size: 0.95rem;
}

.btn-quote:hover {
    background: #1A202C;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    background: linear-gradient(rgba(26, 32, 44, 0.60), rgba(26, 32, 44, 0.60)),
                url('images/hero-background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    padding: 130px 0;
    margin-top: 70px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 32, 44, 0.70) 0%, rgba(45, 55, 72, 0.60) 100%);
    backdrop-filter: blur(2px);
}

.hero .container {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding-left: 300px;
    padding-right: 60px;
    max-width: 100%;
    margin: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    color: var(--white);
    text-align: left;
    width: 100%;
    padding-left: 0;
    margin-top: 0;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(26, 32, 44, 0.8);
    backdrop-filter: blur(10px);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: left;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #10B981;
    border-radius: 50%;
    display: inline-block;
}

.hero-title {
    font-size: 3.25rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--white);
    text-align: left;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    line-height: 1.6;
    text-align: left;
}

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

.btn-primary {
    background: var(--white);
    color: var(--dark-bg);
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary .arrow {
    font-size: 1.2rem;
    line-height: 1;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: #2D3748;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s, border-color 0.3s;
    display: inline-flex;
    align-items: center;
}

.btn-secondary:hover {
    background: #374151;
    border-color: rgba(255, 255, 255, 0.5);
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 3rem;
}

.stat-card {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1rem;
    border-radius: 0.75rem;
    text-align: center;
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--white);
    line-height: 1.4;
    font-weight: 400;
}

/* Production Process Section */
.production-process {
    background: var(--dark-bg);
    padding: 6rem 0;
    color: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--white);
}

.section-title.dark {
    color: #1E40AF;
}

.why-tankpro .section-title,
.quality-reliability .section-title {
    color: #374151;
}

.why-tankpro .section-subtitle,
.quality-reliability .section-subtitle {
    color: #6B7280;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #D1D5DB;
}

.section-subtitle.dark {
    color: #1E40AF;
}

.process-cards {
    display: grid;
    grid-template-columns: repeat(3, 395px);
    gap: 2rem;
    justify-content: center;
}

.process-card {
    background: #1A1A1A;
    border: none;
    border-radius: 12px;
    padding: 0;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    width: 395px;
    height: 442px;
}

.process-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
}

.process-number {
    position: absolute;
    top: 1rem;
    left: 1rem;
    width: 50px;
    height: 50px;
    background: #9CA3AF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
    color: #1A1A1A;
    z-index: 2;
    transition: opacity 0.6s ease, transform 0.6s ease;
    opacity: 0.5;
}

.process-image {
    width: 100%;
    height: 221px;
    border-radius: 12px 12px 0 0;
    overflow: hidden;
    margin: 0;
    flex-shrink: 0;
}

.process-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

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

.process-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--white);
    padding: 1.5rem 1.5rem 0.5rem;
}

.process-description {
    color: #D1D5DB;
    line-height: 1.6;
    font-size: 0.95rem;
    padding: 0 1.5rem 1.5rem;
}

/* Why TankPro Section */
.why-tankpro {
    background: #F3F4F6;
    padding: 6rem 0;
}

.feature-cards {
    display: grid;
    grid-template-columns: repeat(4, 358px);
    gap: 2rem;
    justify-content: center;
}

.feature-card {
    background: var(--white);
    border: none;
    border-radius: 12px;
    padding: 1.5rem 2rem;
    text-align: left;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    width: 358px;
    height: 195px;
    display: flex;
    flex-direction: column;
    position: relative;
    justify-content: space-between;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon-wrapper {
    width: 48px;
    height: 48px;
    background: #F3F4F6;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    flex-shrink: 0;
}

.feature-icon {
    width: 24px;
    height: 24px;
    color: #374151;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #374151;
    margin-bottom: 0.75rem;
    text-align: left;
}

.feature-description {
    color: #6B7280;
    line-height: 1.6;
    font-size: 0.95rem;
    text-align: left;
}

/* Quality and Reliability Section */
.quality-reliability {
    background: var(--light-bg);
    padding: 6rem 0;
}

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

.quality-text {
    max-width: 600px;
}

.quality-description {
    font-size: 1.1rem;
    color: #4A5568;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.quality-list {
    list-style: none;
    margin-bottom: 2rem;
}

.quality-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--dark-text);
    font-size: 1rem;
}

.check-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: #10B981;
    color: var(--white);
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.more-info-link {
    color: var(--dark-text);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s;
}

.more-info-link:hover {
    color: var(--accent-blue);
}

.quality-image {
    width: 100%;
    height: 400px;
    border-radius: 12px;
    overflow: hidden;
}

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

/* References Section */
.references {
    background: var(--dark-bg);
    padding: 6rem 0;
    color: var(--white);
}

.reference-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.reference-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    font-weight: 600;
    color: var(--white);
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
}

.reference-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    background: rgba(255, 255, 255, 0.1);
}

/* Call to Action Section */
.cta-section {
    background: var(--light-bg);
    padding: 6rem 0;
    text-align: center;
    color: var(--dark-text);
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--dark-text);
}

.cta-subtitle {
    font-size: 1.1rem;
    color: #4A5568;
    margin-bottom: 2.5rem;
}

.btn-cta {
    background: #1E40AF;
    color: var(--white);
    border: none;
    padding: 1.25rem 2.5rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(30, 64, 175, 0.3);
    background: #1E3A8A;
}

/* Footer */
.footer {
    background: var(--dark-bg);
    padding: 4rem 0 2rem;
    color: var(--white);
}

.footer .container {
    padding: 0 75px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    margin-left: -120px;
    text-decoration: none;
    color: inherit;
}

.footer-logo:hover {
    opacity: 0.8;
}

.footer-logo .logo-image {
    width: 200px;
    height: auto;
    flex-shrink: 0;
    object-fit: contain;
}

.footer-logo .logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.footer-logo .logo-main {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--white);
    line-height: 1.2;
}

.footer-logo .logo-sub {
    font-weight: 400;
    font-size: 0.75rem;
    color: var(--text-light);
    line-height: 1.2;
}

.footer-description {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 0.95rem;
    margin-left: -120px;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--white);
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s;
    font-size: 0.95rem;
}

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

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

.contact-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.footer-map {
    margin-top: 1.5rem;
    width: 100%;
    position: relative;
}

.footer-map .map-company-label {
    font-size: 0.95rem;
    padding: 0.5rem 1rem;
    top: 10px;
    left: 10px;
}

.footer-map iframe {
    width: 100%;
    height: 200px;
    border: 0;
    border-radius: 8px;
    display: block;
}

.footer-map-link {
    display: inline-block;
    margin-top: 0.75rem;
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-map-link:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Products Header Section */
.products-header {
    background: var(--dark-bg);
    padding: 4rem 0;
    color: var(--white);
    margin-top: 70px;
}

.products-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--white);
}

.products-subtitle {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.9);
}

/* Search and Filter Section */
.products-filter-section {
    background: #F3F4F6;
    padding: 2rem 0;
    border-bottom: 1px solid #E5E7EB;
}

@media (max-width: 768px) {
    .products-filter-section {
        padding: 1.5rem 0;
    }
}

.filter-content {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 1.5rem;
}

.search-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--white);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    border: 1px solid #E5E7EB;
    max-width: 100%;
    width: 100%;
    flex-shrink: 0;
    order: 1;
}

.search-bar svg {
    color: #6B7280;
    flex-shrink: 0;
}

.search-input {
    border: none;
    outline: none;
    flex: 1;
    font-size: 0.95rem;
    color: var(--dark-text);
}

.search-input::placeholder {
    color: #9CA3AF;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    width: 100%;
    order: 2;
}

.filter-btn {
    background: var(--white);
    border: 1px solid #E5E7EB;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    color: #374151;
    cursor: pointer;
    transition: all 0.3s;
}

.filter-btn:hover {
    background: #F9FAFB;
    border-color: #D1D5DB;
}

.filter-btn.active {
    background: #1E40AF;
    color: var(--white);
    border-color: #1E40AF;
}

/* Products Section */
.products-section {
    background: var(--light-bg);
    padding: 4rem 0;
    min-height: 80vh;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 480px);
    gap: 2rem;
    margin-top: 2rem;
    justify-content: center;
}

.product-card {
    background-color: #fff;
    border-radius: 0.75rem;
    overflow: hidden;
    border: 1px solid #E2E8F0;
    transition-duration: 0.15s;
    transition-property: all;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    width: 480px;
    min-height: 600px;
    height: auto;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.product-image-wrapper {
    position: relative;
    width: 100%;
    height: 280px;
    overflow: hidden;
    flex-shrink: 0;
}

.product-image {
    width: 100%;
    height: 100%;
    transition-duration: 0.15s;
    transition-property: transform;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card:hover .product-image {
    transform: scale(1.1);
}

.product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.product-tag {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #0F172A;
}

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

.product-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #0F172A;
    margin-bottom: 0.5rem;
}

.product-description {
    color: #475569;
    line-height: 1.625;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex: 0 0 auto;
}

.product-feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: #475569;
}

.product-feature-item .feature-icon {
    width: 16px;
    height: 16px;
    color: #94A3B8;
    flex-shrink: 0;
}

.product-detail-btn {
    width: 100%;
    background: #0F172A;
    color: var(--white);
    border: none;
    padding: 0.625rem 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition-duration: 0.15s;
    transition-property: background-color;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    margin-top: auto;
    flex-shrink: 0;
}

.product-detail-btn:hover {
    background: #1E293B;
}

/* Responsive Design */
@media (max-width: 968px) {
    .container {
        padding: 0 20px;
    }

    .footer .container {
        padding: 0 20px;
    }

    .footer {
        padding: 3rem 0 1.5rem;
    }

    .logo-image {
        width: 136px;
    }

    .footer-logo .logo-image {
        width: 136px;
    }

    .hero .container {
        padding-left: 20px;
        padding-right: 20px;
    }
    
    .badge {
        margin-bottom: 0.75rem;
    }

    .mobile-menu-toggle {
        display: flex;
        order: 3;
    }

    .logo {
        margin-left: 0;
    }

    .header-content {
        flex-wrap: nowrap;
    }

    .btn-quote {
        order: 2;
    }

    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1000;
        gap: 0;
        max-height: calc(100vh - 70px);
        overflow-y: auto;
    }

    .nav.active {
        transform: translateX(0);
    }

    .nav a {
        padding: 1rem;
        border-bottom: 1px solid #E5E7EB;
        width: 100%;
        display: block;
    }

    .nav a:last-child {
        border-bottom: none;
    }

    .btn-quote {
        display: block;
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
        margin-left: auto;
    }

    .header-content {
        gap: 1rem;
    }

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

    .hero-content {
        text-align: center;
        margin: 0 auto;
    }

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

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

    .quality-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
        margin-left: 0;
    }

    .footer-description {
        margin-left: 0;
        text-align: center;
    }

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

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

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

    .footer-contact li {
        justify-content: center;
    }

    .process-cards,
    .feature-cards {
        grid-template-columns: 1fr;
        justify-items: center;
    }

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

    .process-card {
        margin: 0 auto;
    }

    .feature-card {
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .logo-image {
        width: 116px;
    }

    .footer-logo .logo-image {
        width: 116px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
        margin-top: 2rem;
    }

    .stat-card {
        padding: 0.875rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .logo-image {
        width: 96px;
    }

    .footer-logo .logo-image {
        width: 96px;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .reference-cards {
        grid-template-columns: repeat(2, 1fr);
        justify-items: center;
    }

    .reference-card {
        margin: 0 auto;
    }

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

    .hero-content {
        text-align: center;
        margin: 0 auto;
    }

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

    .products-title {
        font-size: 1.5rem;
    }

    .products-subtitle {
        font-size: 0.85rem;
    }

    .filter-content {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }

    .search-bar {
        max-width: 100%;
        width: 100%;
        padding: 0.875rem 1rem;
        order: 1;
    }

    .search-input {
        font-size: 0.875rem;
    }

    .filter-buttons {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        overflow-x: visible;
        padding-bottom: 0;
        width: 100%;
        order: 2;
    }

    .filter-btn {
        padding: 0.5rem 0.875rem;
        font-size: 0.8rem;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        justify-content: center;
        margin-top: 1.5rem;
    }

    .product-card {
        width: 100% !important;
        max-width: 100% !important;
        min-height: auto;
    }

    .product-image-wrapper {
        height: 220px;
    }

    .product-content {
        padding: 1.25rem;
    }

    .product-title {
        font-size: 1.125rem;
        margin-bottom: 0.5rem;
    }

    .product-description {
        font-size: 0.8125rem;
        margin-bottom: 0.875rem;
        line-height: 1.5;
    }

    .product-features {
        margin-bottom: 1.25rem;
        gap: 0.375rem;
    }

    .product-feature-item {
        font-size: 0.8125rem;
    }

    .product-feature-item .feature-icon {
        width: 14px;
        height: 14px;
    }

    .product-detail-btn {
        padding: 0.625rem 1rem;
        font-size: 0.875rem;
    }

    .products-header {
        padding: 3rem 0;
    }

    .products-title {
        font-size: 1.5rem;
    }

    .products-subtitle {
        font-size: 0.85rem;
    }
}

/* Services Section */
.services-section {
    background: var(--light-bg);
    padding: 4rem 0;
}

.service-category {
    margin-bottom: 4rem;
}

.service-category:last-child {
    margin-bottom: 0;
}

.service-category-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 2rem;
    text-align: center;
}

.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.service-card {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #E5E7EB;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.service-icon svg {
    width: 32px;
    height: 32px;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 1rem;
}

.service-description {
    color: #4A5568;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.service-features {
    list-style: none;
    padding: 0;
}

.service-features li {
    color: #374151;
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.service-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: 700;
}

@media (max-width: 768px) {
    .service-cards {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .service-category-title {
        font-size: 1.25rem;
    }

    .service-card {
        padding: 1.5rem;
    }

    .services-section {
        padding: 3rem 0;
    }
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: #1E40AF;
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s, background 0.3s;
    z-index: 1000;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background: #1E3A8A;
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.scroll-to-top:active {
    transform: translateY(-1px);
}

.scroll-to-top svg {
    width: 20px;
    height: 20px;
}

@media (max-width: 768px) {
    .scroll-to-top {
        width: 45px;
        height: 45px;
        bottom: 1.5rem;
        right: 1.5rem;
    }

    .scroll-to-top svg {
        width: 18px;
        height: 18px;
    }
}

/* Contact Section */
.contact-section {
    background: #F8F9FA;
    padding: 4rem 0;
    margin-top: 70px;
    min-height: calc(100vh - 70px);
}

.map-section {
    margin-top: 4rem;
    width: 100%;
}

.map-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 1.5rem;
    text-align: center;
}

.map-container {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    position: relative;
}

.map-company-label {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--white);
    color: var(--dark-bg);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 10;
    letter-spacing: 0.5px;
}

.map-container iframe {
    width: 100%;
    height: 450px;
    border: 0;
    display: block;
}

.map-link {
    position: absolute;
    bottom: 15px;
    right: 15px;
    z-index: 10;
}

.map-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--white);
    color: var(--dark-bg);
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.map-link-btn:hover {
    background: #F3F4F6;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.map-link-btn svg {
    width: 18px;
    height: 18px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-card {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.contact-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: #F3F4F6;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: #374151;
}

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

.contact-card-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #1F2937;
    margin-bottom: 0.5rem;
}

.contact-card-text {
    font-size: 0.95rem;
    color: #6B7280;
    line-height: 1.6;
    margin: 0;
}

.contact-form-wrapper {
    width: 100%;
}

.contact-form-card {
    background: var(--white);
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.contact-form-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1F2937;
    margin-bottom: 2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: #374151;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    font-size: 0.95rem;
    color: #1F2937;
    font-family: 'Inter', sans-serif;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: #1E40AF;
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: #9CA3AF;
}

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

.form-submit-btn {
    background: #1E40AF;
    color: var(--white);
    border: none;
    padding: 0.875rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background 0.3s, transform 0.3s;
    margin-top: 0.5rem;
}

.form-submit-btn:hover {
    background: #1E3A8A;
    transform: translateY(-1px);
}

.form-submit-btn:active {
    transform: translateY(0);
}

.form-submit-btn svg {
    width: 20px;
    height: 20px;
}

.form-submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.form-message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    line-height: 1.5;
    animation: slideDown 0.3s ease;
}

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

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.form-message-success {
    background: #D1FAE5;
    border: 1px solid #10B981;
    color: #065F46;
}

.form-message-error {
    background: #FEE2E2;
    border: 1px solid #EF4444;
    color: #991B1B;
}

@media (max-width: 968px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-form-card {
        padding: 2rem;
    }
}

@media (max-width: 768px) {
    .contact-section {
        padding: 2rem 0;
    }

    .contact-card {
        padding: 1.5rem;
    }

    .contact-form-title {
        font-size: 1.5rem;
    }

    .contact-form-card {
        padding: 1.5rem;
    }

    .map-company-label {
        font-size: 0.95rem;
        padding: 0.625rem 1.25rem;
        top: 10px;
        left: 10px;
    }

    .footer-map .map-company-label {
        font-size: 0.85rem;
        padding: 0.5rem 0.875rem;
        top: 8px;
        left: 8px;
    }
}

/* Product Detail Modal */
.product-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    overflow-y: auto;
}

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

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--white);
    border-radius: 16px;
    max-width: 900px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    margin: 2rem auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    z-index: 2001;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: #F3F4F6;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: background 0.3s, transform 0.3s;
}

.modal-close:hover {
    background: #E5E7EB;
    transform: rotate(90deg);
}

.modal-close svg {
    width: 20px;
    height: 20px;
    color: #374151;
}

.modal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.modal-image-section {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 500px;
    overflow: hidden;
    border-radius: 16px 0 0 16px;
}

.modal-product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.modal-product-tag {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    padding: 0.375rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #0F172A;
}

.modal-info-section {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.modal-product-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: #0F172A;
    margin: 0;
}

.modal-product-description {
    color: #475569;
    line-height: 1.6;
    font-size: 0.95rem;
    margin: 0;
}

.modal-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.modal-section-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #1F2937;
    margin: 0;
}

.modal-features {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.modal-feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: #475569;
}

.modal-feature-item .feature-icon {
    width: 18px;
    height: 18px;
    color: #94A3B8;
    flex-shrink: 0;
}

.modal-technical-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.modal-spec-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem;
    background: #F9FAFB;
    border-radius: 8px;
}

.modal-spec-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: #6B7280;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.modal-spec-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: #1F2937;
}

.modal-actions {
    margin-top: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid #E5E7EB;
}

.modal-quote-btn {
    width: 100%;
    background: #1E40AF;
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}

.modal-quote-btn:hover {
    background: #1E3A8A;
    transform: translateY(-2px);
}

.modal-quote-btn:active {
    transform: translateY(0);
}

@media (max-width: 968px) {
    .modal-body {
        grid-template-columns: 1fr;
    }

    .modal-image-section {
        min-height: 300px;
        border-radius: 16px 16px 0 0;
    }

    .modal-info-section {
        padding: 2rem;
    }

    .modal-technical-specs {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 1rem auto;
        max-height: 95vh;
    }

    .modal-info-section {
        padding: 1.5rem;
    }

    .modal-product-title {
        font-size: 1.5rem;
    }
}