img { max-width: 100%; height: auto; }
* { box-sizing: border-box; }
:root {
    --dark-blue: #001B3D;
    --primary-blue: #1E4DB7;
    --light-blue: #3A7BFA;
    --charcoal: #333233;
    --gray: #6B7280;
    --light-gray: #F3F4F6;
    --white: #FFFFFF;
    
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Playfair Display', serif;
}

body {
    font-family: var(--font-primary);
    color: var(--charcoal);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-color: var(--light-gray);
}

a {
    text-decoration: none;
    color: var(--primary-blue);
    transition: 0.3s;
}

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 15px;
}

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.text-center { text-align: center; }
.mt-4 { margin-top: 2rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    border: 1.5px solid transparent;
}
.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
}
.btn-primary:hover {
    background-color: #173f9e;
}
.btn-outline {
    background-color: transparent;
    border-color: var(--white);
    color: var(--white);
}
.btn-outline:hover {
    background-color: var(--white);
    color: var(--primary-blue);
}
.btn-outline.dark {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}
.btn-outline.dark:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}
.btn-icon {
    padding: 8px 12px;
    border-radius: 4px;
    background-color: var(--primary-blue);
    color: var(--white);
}

.subtitle {
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

/* Header */
.top-bar {
    background-color: var(--dark-blue);
    color: var(--white);
    font-size: 13px;
    padding: 10px 0;
}
.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.top-bar a {
    color: var(--white);
    margin-left: 20px;
}
.site-header {
    background-color: var(--white);
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo-icon {
    font-family: var(--font-secondary);
    font-size: 32px;
    font-weight: 700;
    color: var(--dark-blue);
    border: 2px solid var(--dark-blue);
    border-radius: 50%;
    padding: 5px 10px;
    margin-right: 10px;
}
.logo {
    display: flex;
    align-items: center;
    color: var(--charcoal);
}
.logo-text {
    font-family: var(--font-secondary);
    line-height: 1.1;
}
.logo-text strong { font-weight: 700; }
.logo-text small { font-size: 11px; letter-spacing: 1px; font-family: var(--font-primary); color: var(--gray); }

.main-navigation ul {
    display: flex;
    gap: 30px;
}
.main-navigation a {
    color: var(--charcoal);
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
}
.main-navigation a:hover {
    color: var(--primary-blue);
}

/* Hero Section */
.hero-section {
    background-color: var(--dark-blue);
    background-image: linear-gradient(90deg, rgba(0, 27, 61, 0.9) 0%, rgba(0, 27, 61, 0.2) 50%, transparent 100%), url("../images/hero-bg.png");
    background-size: cover;
    background-position: center;
    padding: 100px 0 150px;
    position: relative;
    overflow: hidden;
}
.hero-inner {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero-content {
    flex: 1;
    color: var(--white);
    max-width: 55%;
}
.hero-content h1 {
    font-size: 64px;
    line-height: 72px;
    margin: 0 0 20px;
    letter-spacing: -1px;
}
.highlight {
    color: var(--light-blue);
}
.hero-content p {
    font-size: 18px;
    max-width: 500px;
    margin-bottom: 40px;
    color: #e0e0e0;
}
.hero-buttons {
    display: flex;
    gap: 20px;
}
.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}
.valve-placeholder {
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-inner { position: static !important; z-index: auto !important; }
    .hero-sticky-nav {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 10px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.hero-sticky-nav a {
    color: var(--white);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.hero-sticky-nav i {
    font-size: 20px;
    margin-bottom: 5px;
    color: #25D366; /* WhatsApp color approx */
}

/* Stats Section */
.stats-section {
    position: relative;
    z-index: 10;
    margin-top: -60px;
}
.stats-grid {
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 12px 28px rgba(13,27,61,0.06);
    display: flex;
    padding: 30px;
    align-items: center;
}
.stat-item {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 0 20px;
}
.border-left { border-left: 1px solid #eee; }
.stat-item i {
    font-size: 32px;
    color: var(--primary-blue);
}
.stat-item h3 {
    margin: 0;
    font-size: 28px;
    color: var(--dark-blue);
}
.stat-item p {
    margin: 0;
    font-size: 13px;
    color: var(--gray);
}

/* Products Section */
.products-section {
    padding: 80px 0;
    background: var(--light-gray);
}
.product-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
    margin-top: 40px;
}
.product-card {
    box-sizing: border-box;
    background: var(--white);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 6px 20px rgba(13,27,61,0.04);
    transition: 0.3s;
}
.product-card:hover {
    box-shadow: 0 12px 28px rgba(13,27,61,0.1);
    transform: translateY(-5px);
}
.product-img-placeholder {
    height: 120px;
    background: #f0f0f0;
    border-radius: 8px;
    margin-bottom: 15px;
}
.product-card h4 {
    margin: 0 0 10px;
    color: var(--dark-blue);
}
.product-card p {
    font-size: 12px;
    color: var(--gray);
    margin-bottom: 15px;
}

/* Why Choose Us */
.why-choose-us {
    background: var(--white);
    padding: 80px 0;
}
.why-inner {
    display: flex;
    gap: 50px;
}
.why-header {
    flex: 1;
    background: var(--light-gray);
    padding: 40px;
    border-radius: 12px;
}
.why-header h2 {
    font-size: 40px;
    line-height: 1.2;
    color: var(--dark-blue);
    margin-bottom: 20px;
}
.why-grid {
    flex: 2;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.why-card {
    background: var(--white);
    border: 1px solid #eee;
    padding: 30px 20px;
    border-radius: 12px;
    text-align: center;
}
.why-card i {
    font-size: 32px;
    color: var(--primary-blue);
    margin-bottom: 15px;
}
.why-card h4 { margin: 0 0 10px; color: var(--dark-blue); }
.why-card p { font-size: 13px; color: var(--gray); margin: 0; }

/* Industries */
.industries-section {
    padding: 80px 0;
    background: var(--dark-blue);
    color: var(--white);
}
.industries-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}
.industries-header h2 {
    margin: 0;
    font-size: 40px;
}
.btn-text {
    color: var(--white);
    font-weight: 600;
}
.industries-icons {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    text-align: center;
}
.ind-icon i {
    font-size: 40px;
    color: var(--light-blue);
    margin-bottom: 15px;
}

/* Certifications */
.certifications-section {
    background: var(--primary-blue);
    color: var(--white);
    padding: 40px 0;
}
.certifications-section .subtitle { color: var(--light-blue); }
.certifications-section h2 { margin: 0; }
.cert-logos {
    display: flex;
    gap: 40px;
    font-size: 24px;
    font-weight: bold;
}

/* Pre-footer */
.pre-footer-cta {
    background: var(--dark-blue);
    padding: 40px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.cta-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--white);
}
.cta-left {
    display: flex;
    align-items: center;
    gap: 20px;
}
.cta-left h2 { margin: 0; font-size: 24px; }
.cta-left p { margin: 5px 0 0; color: #ccc; }
.cta-right {
    display: flex;
    gap: 15px;
}
.valve-sm {
    width: 60px; height: 60px; background: rgba(255,255,255,0.1); border-radius: 50%;
}

/* Footer */
.site-footer {
    background: #000c1f;
    color: #ccc;
    padding: 60px 0 0;
}
.footer-widgets {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-logo { display: block; margin-bottom: 20px; color: var(--white); }
.footer-logo .logo-icon { border-color: var(--white); color: var(--white); }
.widget-title { color: var(--white); margin-bottom: 20px; }
.footer-column ul li { margin-bottom: 10px; }
.footer-column ul a { color: #ccc; }
.footer-column ul a:hover { color: var(--primary-blue); }
.site-info {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    font-size: 13px;
}
.site-info-inner {
    display: flex;
    justify-content: space-between;
}
.site-info a { color: #ccc; }

/* Header Adjustments */
.top-bar-right {
    display: flex;
    gap: 20px;
    align-items: center;
}
.top-bar-right a i {
    margin-right: 5px;
    color: var(--light-blue);
}

.main-navigation ul.nav-list {
    display: flex;
    gap: 25px;
    align-items: center;
    margin: 0;
    padding: 0;
}
.main-navigation ul.nav-list li {
    list-style: none;
}
.main-navigation ul.nav-list a {
    color: var(--charcoal);
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    display: block;
    padding: 10px 0;
}
.main-navigation ul.nav-list a:hover {
    color: var(--primary-blue);
}
.main-navigation ul.nav-list .current-menu-item a {
    color: var(--primary-blue);
}

.header-cta .btn {
    display: inline-flex;
    align-items: center;
}

/* Responsive Media Queries */

/* Tablet & Smaller */
@media (max-width: 1024px) {
    .product-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-widgets { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .hero-content h1 { font-size: 48px; line-height: 56px; }
}

/* Mobile Devices */
@media (max-width: 768px) {
    /* Top Bar */
    .top-bar-inner { flex-direction: column; text-align: center; gap: 10px; }
    
    /* Header */
    .header-inner { flex-direction: column; text-align: center; gap: 15px; }
    .main-navigation ul.nav-list { flex-direction: column; gap: 10px; width: 100%; }
    .logo img { margin-right: 0 !important; }
    
    /* Hero */
    .hero-section { padding: 50px 0; }
    .hero-inner { flex-direction: column; text-align: center; gap: 40px; }
    .hero-content p { margin: 0 auto 30px; }
    .hero-buttons { justify-content: center; flex-wrap: wrap; }
    .hero-image { display: none; /* Hide placeholder cog on mobile to save space */ }
    .hero-inner { position: static !important; z-index: auto !important; }
    .hero-sticky-nav { 
        position: fixed; 
        top: auto; 
        bottom: 20px; 
        right: 10px; 
        flex-direction: column; 
        z-index: 1000;
        background: var(--dark-blue);
        box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    }
    
    /* Stats */
    .stats-section { margin-top: -30px; }
    .stats-grid { flex-direction: column; gap: 20px; padding: 20px; }
    .stat-item { border-left: none; border-bottom: 1px solid #eee; padding-bottom: 20px; width: 100%; justify-content: center; text-align: center; }
    .stat-item:last-child { border-bottom: none; padding-bottom: 0; }
    .border-left { border-left: none; }
    
    /* Products */
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    
    /* Why Us */
    .why-inner { flex-direction: column; gap: 30px; }
    .why-grid { grid-template-columns: 1fr; }
    
    /* Industries */
    .industries-header { flex-direction: column; gap: 20px; text-align: center; align-items: center; }
    .industries-icons { grid-template-columns: repeat(2, 1fr); }
    
    /* Certifications */
    .cert-logos { justify-content: center; flex-wrap: wrap; text-align: center; }
    
    /* CTA */
    .cta-inner { flex-direction: column; text-align: center; gap: 20px; }
    .cta-left { flex-direction: column; }
    
    /* Footer */
    .footer-widgets { grid-template-columns: 1fr; text-align: center; }
    .site-info-inner { flex-direction: column; gap: 15px; text-align: center; }
    
    /* Page Headers */
    .page-header { padding: 40px 0; }
    
    /* Contact Page */
    .contact-wrapper { grid-template-columns: 1fr; }
    
    /* About Us Page */
    .about-wrapper { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .product-grid { grid-template-columns: 1fr; }
    .industries-icons { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 36px; line-height: 44px; }
}

@media (max-width: 768px) {
    .d-flex { flex-direction: column; text-align: center; gap: 15px; }
    .hero-buttons { flex-direction: column; width: 100%; }
    .hero-buttons .btn { width: 100%; justify-content: center; }
    .cta-right { flex-direction: column; width: 100%; }
    .cta-right .btn { width: 100%; justify-content: center; }
    .cert-logos { justify-content: center; }
}

@media (max-width: 768px) {
    .hero-sticky-nav small { display: none; }
    .hero-inner { position: static !important; z-index: auto !important; }
    .hero-sticky-nav { flex-direction: row; bottom: 10px; right: 10px; padding: 10px 15px; border-radius: 30px; }
    .hero-sticky-nav i { margin-bottom: 0; font-size: 24px; margin: 0 10px; }
}

@media (max-width: 768px) {
    .mobile-menu-toggle { display: block !important; }
    .main-navigation ul.nav-list { display: none; padding-top: 15px; border-top: 1px solid #eee; margin-top: 15px; }
}

/* Override Sticky Nav Fix */
@media (max-width: 768px) {
    .hero-inner { position: static !important; z-index: auto !important; }
    .hero-sticky-nav {
        flex-direction: column !important;
        top: auto !important;
        bottom: 20px !important;
        right: 15px !important;
        transform: none !important;
        padding: 15px 12px !important;
        border-radius: 40px !important;
        z-index: 99999 !important;
        box-shadow: 0 5px 20px rgba(0,0,0,0.4) !important;
    }
    .hero-sticky-nav a {
        display: block !important;
    }
    .hero-sticky-nav i {
        margin: 10px 0 !important;
        font-size: 26px !important;
    }
}

@media (max-width: 768px) {
    .hero-content { max-width: 100%; }
    .hero-section { background-image: linear-gradient(180deg, rgba(0, 27, 61, 0.9) 0%, rgba(0, 27, 61, 0.7) 100%), url('../images/hero-bg.png'); }
}