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

:root {
    /* Charcoal Industry Color Palette */
    --primary-dark: #0f0f0f;
    --secondary-dark: #1a1a1a;
    --tertiary-dark: #252525;
    --accent-orange: #ff6b35;
    --accent-gold: #f7931e;
    --accent-bronze: #cd7f32;
    --text-light: #ffffff;
    --text-offwhite: #f8f8f8;
    --text-gray: #b0b0b0;
    --text-muted: #888888;
    --success-green: #4caf50;
    --whatsapp-green: #25d366;
    --trust-blue: #2c5282;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 100%);
    --gradient-secondary: linear-gradient(135deg, #1a1a1a 0%, #252525 100%);
    --gradient-accent: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    --gradient-gold: linear-gradient(135deg, #f7931e 0%, #cd7f32 100%);
    --gradient-dark: linear-gradient(135deg, #000000 0%, #0f0f0f 100%);
    --gradient-trust: linear-gradient(135deg, #2c5282 0%, #1a365d 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.875rem;
    --font-size-sm: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-xxl: 2rem;
    --font-size-xxxl: 2.5rem;
    --font-size-display: 3rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-light);
    background: var(--gradient-primary);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Premium Header */
.header {
    background: rgba(15, 15, 15, 0.98);
    backdrop-filter: blur(15px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 107, 53, 0.2);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Premium Logo */
.logo-placeholder {
    width: 60px;
    height: 60px;
    background: var(--gradient-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: var(--text-light);
    box-shadow: 0 6px 20px rgba(205, 127, 50, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.company-name {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.tagline {
    font-size: var(--font-size-xs);
    color: var(--text-gray);
    margin: 0;
}

/* Premium WhatsApp Button */
.whatsapp-btn {
    background: var(--gradient-accent);
    color: var(--text-light);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.whatsapp-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

/* Premium Hero Section */
.hero {
    padding: 140px 0 var(--spacing-xxl);
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%23ff6b35" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="%23f7931e" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="%23cd7f32" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="%23ff6b35" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="%23f7931e" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
    z-index: 1;
}

/* Premium Hero Container */
.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
    position: relative;
    z-index: 2;
}

/* Premium Hero Title */
.hero-title {
    font-size: var(--font-size-display);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-offwhite) 0%, var(--accent-gold) 50%, var(--accent-orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Premium Hero Subtitle */
.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--accent-gold);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-features {
    margin: var(--spacing-lg) 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--text-gray);
    font-size: var(--font-size-sm);
}

.feature-item i {
    color: var(--accent-orange);
    width: 20px;
}

.cta-section {
    margin-top: var(--spacing-xl);
}

/* Premium CTA Button */
.cta-button {
    background: var(--gradient-accent);
    color: var(--text-light);
    border: none;
    padding: var(--spacing-md) var(--spacing-xxl);
    border-radius: 50px;
    font-size: var(--font-size-lg);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.4);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(255, 107, 53, 0.5);
}

.cta-subtext {
    color: var(--text-gray);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
}

/* Product Showcase */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.product-image {
    margin-bottom: var(--spacing-lg);
}

/* Premium Product Showcase */
.image-placeholder {
    width: 320px;
    height: 320px;
    background: var(--gradient-secondary);
    border-radius: 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    border: 2px solid rgba(255, 107, 53, 0.4);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6);
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.image-placeholder i {
    font-size: 4rem;
    color: var(--accent-orange);
    margin-bottom: var(--spacing-sm);
}

.image-placeholder span {
    font-size: var(--font-size-md);
    color: var(--text-gray);
    font-weight: 500;
}

.product-variants {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--spacing-xs);
    max-width: 300px;
    margin: 0 auto;
}

/* Premium Variant Items */
.variant-item {
    background: rgba(255, 255, 255, 0.08);
    padding: var(--spacing-sm);
    border-radius: 25px;
    font-size: var(--font-size-xs);
    color: var(--text-gray);
    border: 1px solid rgba(255, 107, 53, 0.4);
    transition: all 0.3s ease;
    font-weight: 500;
    text-align: center;
}

.variant-item:hover {
    background: rgba(255, 107, 53, 0.2);
    color: var(--text-light);
    transform: translateY(-2px);
}

/* Premium Certifications */
.certifications {
    padding: var(--spacing-xxl) 0;
    background: var(--gradient-secondary);
    position: relative;
}

.section-title {
    text-align: center;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xl);
    color: var(--accent-gold);
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto;
}

/* Premium Cert Items */
.cert-item {
    background: rgba(255, 255, 255, 0.06);
    padding: var(--spacing-lg);
    border-radius: 20px;
    text-align: center;
    border: 1px solid rgba(255, 107, 53, 0.3);
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
}

.cert-item:hover {
    background: rgba(255, 107, 53, 0.1);
    transform: translateY(-3px);
}

.cert-item i {
    font-size: var(--font-size-xl);
    color: var(--accent-orange);
    margin-bottom: var(--spacing-xs);
}

.cert-item span {
    display: block;
    font-weight: 600;
    color: var(--text-light);
}

/* Contact Info */
.contact-info {
    padding: var(--spacing-xl) 0;
    background: rgba(26, 26, 26, 0.5);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.contact-item i {
    font-size: var(--font-size-xl);
    color: var(--whatsapp-green);
    width: 30px;
}

.contact-item h4 {
    color: var(--accent-gold);
    margin-bottom: 0.25rem;
    font-size: var(--font-size-sm);
}

.contact-item a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: var(--accent-orange);
}

/* Footer */
.footer {
    background: var(--primary-dark);
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
    color: var(--text-gray);
    font-size: var(--font-size-xs);
}

/* Enhanced Mobile Styles */
@media (max-width: 768px) {
    :root {
        --font-size-display: 2.2rem;
        --font-size-xl: 1.4rem;
        --spacing-xxl: 3rem;
    }
    
    .header {
        border-bottom: 1px solid rgba(255, 107, 53, 0.15);
    }
    
    .nav {
        padding: var(--spacing-xs) 0;
    }
    
    .nav-brand {
        gap: var(--spacing-xs);
    }
    
    .logo-placeholder {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-lg);
    }
    
    .company-name {
        font-size: var(--font-size-sm);
    }
    
    .tagline {
        font-size: 0.8rem;
    }
    
    .hero {
        padding: 110px 0 var(--spacing-xl);
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.2rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
        letter-spacing: 0.5px;
    }
    
    .feature-item {
        justify-content: center;
        font-size: var(--font-size-xs);
    }
    
    .image-placeholder {
        width: 250px;
        height: 250px;
    }
    
    .image-placeholder i {
        font-size: 3.5rem;
    }
    
    .product-variants {
        grid-template-columns: repeat(2, 1fr);
        max-width: 280px;
        gap: var(--spacing-sm);
    }
    
    .variant-item {
        padding: var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .cta-button {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-md);
    }
    
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .cert-item {
        padding: var(--spacing-md);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

/* Ultra Mobile Optimization */
@media (max-width: 480px) {
    :root {
        --font-size-display: 1.8rem;
        --font-size-xl: 1.2rem;
        --spacing-sm: 0.75rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }
    
    .hero-title {
        font-size: 1.8rem;
        line-height: 1.1;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-md);
        letter-spacing: 0.3px;
    }
    
    .cta-button {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-sm);
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .image-placeholder {
        width: 200px;
        height: 200px;
    }
    
    .product-variants {
        grid-template-columns: 1fr;
        max-width: 220px;
    }
    
    .whatsapp-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .cert-grid {
        grid-template-columns: 1fr;
        max-width: 200px;
        margin: 0 auto;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }
}

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

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-visual {
    animation: fadeInUp 1s ease-out 0.3s both;
}

/* Scroll Animations */
@media (prefers-reduced-motion: no-preference) {
    .cert-item {
        opacity: 0;
        transform: translateY(20px);
        transition: all 0.6s ease;
    }
    
    .cert-item.visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}