/* Global Styles */
:root {
    --primary-color: #1a3c6e;
    --secondary-color: #e67e22;
    --accent-color: #f39c12;
    --text-color: #333;
    --text-light: #666;
    --light-color: #f8f9fa;
    --dark-color: #333;
    --border-color: #e0e0e0;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 8px 30px rgba(0, 0, 0, 0.2);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 8px;
    --border-radius-small: 4px;
    --border-radius-large: 12px;
    --max-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Loading state */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Skip to main content link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: var(--border-radius-small);
    z-index: 1000;
}

.skip-link:focus {
    top: 6px;
}

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

a:hover {
    color: var(--secondary-color);
}

ul {
    list-style: none;
}

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

.btn {
    display: inline-block;
    background: var(--primary-color);
    color: #fff;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    font-weight: 600;
    font-size: 14px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    background: var(--secondary-color);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-light);
}

section {
    padding: var(--spacing-xxl) 0;
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 15px;
    color: var(--primary-color);
}

p {
    margin-bottom: 15px;
}

/* Header Styles */
.main-header {
    background-color: #fff;
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.main-header.scrolled {
    box-shadow: var(--shadow-medium);
    background-color: rgba(255, 255, 255, 0.95);
}

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

.logo h1 {
    font-size: 24px;
    margin-bottom: 0;
}

.logo span {
    font-size: 14px;
    color: var(--secondary-color);
    display: block;
}

.main-nav ul {
    display: flex;
}

.main-nav ul li {
    margin-left: 20px;
}

.main-nav ul li a {
    color: var(--dark-color);
    font-weight: 600;
    padding: 5px;
    position: relative;
}

.main-nav ul li a:hover,
.main-nav ul li a.active {
    color: var(--primary-color);
}

.main-nav ul li a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, rgba(26, 60, 110, 0.9), rgba(230, 126, 34, 0.8)), 
                linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4));
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: #fff;
    text-align: center;
    padding: 120px 0;
    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="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="60" r="0.5" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(28px, 5vw, 48px);
    margin-bottom: var(--spacing-lg);
    color: #fff;
    font-weight: 800;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out;
}

.hero p {
    font-size: clamp(16px, 2.5vw, 20px);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero .btn {
    animation: fadeInUp 1s ease-out 0.4s both;
    font-size: 16px;
    padding: var(--spacing-md) var(--spacing-xl);
}

/* About Preview Section */
.about-preview .container {
    display: flex;
    align-items: center;
    gap: 40px;
}

.about-content {
    flex: 1;
}

.about-image {
    flex: 1;
}

.image-placeholder {
    background-color: #eee;
    height: 300px;
    border-radius: 5px;
}

/* Products Preview Section */
.products-preview {
    background-color: var(--light-color);
}

.products-preview h2 {
    text-align: center;
    margin-bottom: 40px;
}

.product-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.category {
    background-color: #fff;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.category:hover::before {
    transform: scaleX(1);
}

.category:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-color);
}

.category h3 {
    color: var(--primary-color);
}

.products-preview .btn {
    display: block;
    width: 200px;
    margin: 0 auto;
    text-align: center;
}

/* Industries Preview Section */
.industries-preview h2 {
    text-align: center;
    margin-bottom: 40px;
}

.industry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.industry {
    text-align: center;
    padding: var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-large);
    transition: var(--transition);
    background: #fff;
    position: relative;
    overflow: hidden;
}

.industry::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.industry:hover::before {
    opacity: 0.05;
}

.industry:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
}

.industry > * {
    position: relative;
    z-index: 1;
}

.industry i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* CTA Section */
.cta {
    background-color: var(--primary-color);
    color: #fff;
    text-align: center;
}

.cta h2 {
    color: #fff;
}

.cta .btn {
    background-color: var(--secondary-color);
    margin-top: 20px;
}

.cta .btn:hover {
    background-color: #fff;
    color: var(--primary-color);
}

/* Footer */
.main-footer {
    background: linear-gradient(135deg, var(--dark-color), #2c2c2c);
    color: #fff;
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
    position: relative;
}

.main-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    color: #fff;
    margin-bottom: var(--spacing-lg);
    font-size: 20px;
    position: relative;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--secondary-color);
}

.footer-section p {
    margin-bottom: var(--spacing-sm);
    color: #ccc;
    line-height: 1.6;
}

.contact-info p {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.contact-info i {
    margin-right: var(--spacing-sm);
    color: var(--secondary-color);
    width: 20px;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: #ccc;
    transition: var(--transition-fast);
    display: inline-block;
}

.footer-section ul li a:hover {
    color: #fff;
    transform: translateX(5px);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: #fff;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #ccc;
}

/* Responsive Styles */
@media (max-width: 768px) {
    :root {
        --spacing-xxl: 3rem;
        --spacing-xl: 2rem;
        --spacing-lg: 1.5rem;
    }

    .main-header .container {
        flex-direction: row;
        flex-wrap: wrap;
        padding: var(--spacing-sm);
    }

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

    .main-nav {
        width: 100%;
        display: none;
        background: rgba(255, 255, 255, 0.98);
        border-radius: var(--border-radius);
        margin-top: var(--spacing-sm);
        box-shadow: var(--shadow-medium);
    }

    .main-nav.show {
        display: block;
        animation: slideDown 0.3s ease-out;
    }

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

    .main-nav ul {
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-sm) 0;
    }

    .main-nav ul li {
        margin: var(--spacing-xs) 0;
        width: 100%;
        text-align: center;
    }

    .main-nav ul li a {
        display: block;
        padding: var(--spacing-sm);
        border-radius: var(--border-radius-small);
        margin: 0 var(--spacing-sm);
    }

    .main-nav ul li a:hover {
        background: var(--light-color);
    }

    .about-preview .container {
        flex-direction: column;
        gap: var(--spacing-xl);
    }

    .hero {
        padding: 80px 0;
        background-attachment: scroll;
    }

    .category,
    .industry {
        padding: var(--spacing-lg);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .product-categories,
    .industry-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .hero {
        padding: 60px 0;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero {
        background-attachment: scroll;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000;
        --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.3);
        --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.4);
    }
}