/* ============================================
   VISHAL ENGINEERING - MAIN STYLESHEET
   Modern Industrial Design
   ============================================ */

/* ===== CSS RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-navy: #1a2332;
    --dark-navy: #0f1419;
    --steel-grey: #6b7280;
    --light-grey: #e5e7eb;
    --bg-grey: #f3f4f6;
    --accent-yellow: #f59e0b;
    --accent-orange: #ea580c;
    --white: #ffffff;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    
    /* Typography */
    --font-heading: 'Roboto', 'Arial', sans-serif;
    --font-body: 'Open Sans', 'Arial', sans-serif;
    
    /* Spacing */
    --section-padding: 80px 20px;
    --container-max-width: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--primary-navy);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

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

/* ===== SCROLL PROGRESS INDICATOR ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-yellow), var(--accent-orange));
    z-index: 10000;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
}

/* ===== HEADER & NAVIGATION ===== */
.header {
    background-color: var(--primary-navy);
    color: var(--white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.header-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.logo-tagline {
    font-size: 0.9rem;
    color: var(--accent-yellow);
    font-style: italic;
}

.nav {
    display: flex;
    align-items: center;
}

/* Hide hamburger on desktop, show nav */
@media (min-width: 769px) {
    .menu-toggle {
        display: none !important;
    }
    
    .nav {
        position: static !important;
        max-height: none !important;
        overflow: visible !important;
    }
    
    .nav-list {
        display: flex !important;
    }
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--white);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    display: block;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-yellow);
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--accent-yellow);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--dark-navy);
    min-width: 200px;
    padding: 0.5rem 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

.dropdown-menu .nav-link {
    padding: 0.75rem 1.5rem;
    display: block;
}

.dropdown-menu .nav-link::after {
    display: none;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.8rem;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
    position: relative;
    transition: color var(--transition-fast);
    min-width: 40px;
    min-height: 40px;
    align-items: center;
    justify-content: center;
    order: 2;
}

.menu-toggle:hover {
    color: var(--accent-yellow);
}

.menu-toggle:focus {
    outline: 2px solid var(--accent-yellow);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== HERO SECTION ===== */
.hero {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--dark-navy) 100%);
    color: var(--white);
    padding: 120px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    animation: gridMove 20s linear infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(100px, 100px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.hero-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--white);
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--light-grey);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s both;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-weight: 600;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    border-radius: 4px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background-color: var(--accent-yellow);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    background-color: var(--accent-orange);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.5);
}

.btn-primary:active {
    transform: translateY(-1px) scale(1.02);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background-color: var(--white);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-secondary:hover::before {
    left: 0;
}

.btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary-navy);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-navy);
    border: 2px solid var(--primary-navy);
}

.btn-outline:hover {
    background-color: var(--primary-navy);
    color: var(--white);
}

/* ===== CONTAINER & SECTIONS ===== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--section-padding);
    position: relative;
    overflow: hidden;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-yellow), transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.section.visible::before {
    opacity: 1;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--accent-yellow);
}

/* ===== CARDS & GRIDS ===== */
.card {
    background-color: var(--white);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-normal);
    height: 100%;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.card-icon {
    font-size: 3rem;
    color: var(--accent-yellow);
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-navy);
}

.card-text {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ===== STATS SECTION ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-card {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--dark-navy) 100%);
    color: var(--white);
    border-radius: 8px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(245, 158, 11, 0.2), transparent);
    transition: left 0.5s ease;
}

.stat-card:hover::before {
    left: 100%;
}

.stat-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 10px 30px rgba(245, 158, 11, 0.3);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-yellow);
    margin-bottom: 0.5rem;
    display: inline-block;
    transition: all 0.3s ease;
}

.stat-label {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ===== PRODUCT HIGHLIGHTS ===== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.product-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-normal);
    position: relative;
}

.product-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.product-card:hover::after {
    opacity: 1;
}

.product-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

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

.product-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--steel-grey) 0%, var(--light-grey) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 3rem;
    transition: transform 0.5s ease;
    position: relative;
    overflow: hidden;
}

.product-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.3) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-card:hover .product-image::before {
    opacity: 1;
}

.product-content {
    padding: 1.5rem;
}

.product-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-navy);
}

.product-description {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

/* ===== QUALITY STANDARDS ===== */
.standards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.standard-badge {
    background-color: var(--bg-grey);
    padding: 2rem;
    text-align: center;
    border-radius: 8px;
    border: 2px solid var(--light-grey);
    transition: all var(--transition-normal);
}

.standard-badge:hover {
    border-color: var(--accent-yellow);
    transform: translateY(-5px);
}

.standard-code {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 0.5rem;
}

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

/* ===== CLIENTS SECTION ===== */
.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.client-card {
    background-color: var(--white);
    padding: 2rem;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-normal);
}

.client-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.client-logo {
    width: 120px;
    height: 80px;
    background-color: var(--bg-grey);
    margin: 0 auto 1rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--steel-grey);
    font-weight: 600;
}

.client-name {
    font-weight: 600;
    color: var(--primary-navy);
}

/* ===== CTA BANNER ===== */
.cta-banner {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--dark-navy) 100%);
    color: var(--white);
    padding: 4rem 20px;
    text-align: center;
}

.cta-banner h2 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.cta-banner p {
    color: var(--light-grey);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* ===== ABOUT PAGE ===== */
.about-intro {
    max-width: 900px;
    margin: 0 auto 4rem;
    text-align: center;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.about-card {
    background-color: var(--bg-grey);
    padding: 2.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-yellow);
}

.about-card h3 {
    color: var(--primary-navy);
    margin-bottom: 1rem;
}

.about-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ===== PRODUCT DETAILS ===== */
.product-detail {
    margin-bottom: 4rem;
}

.product-detail-header {
    text-align: center;
    margin-bottom: 3rem;
}

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

.product-features,
.product-benefits {
    background-color: var(--bg-grey);
    padding: 2rem;
    border-radius: 8px;
}

.product-features h4,
.product-benefits h4 {
    color: var(--primary-navy);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-yellow);
}

.feature-list,
.benefit-list {
    list-style: none;
}

.feature-item,
.benefit-item {
    padding: 1rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-dark);
    line-height: 1.8;
}

.feature-item::before,
.benefit-item::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-yellow);
    font-weight: 700;
    font-size: 1.2rem;
}

/* ===== FAQ ACCORDION ===== */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--white);
    border: 1px solid var(--light-grey);
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--primary-navy);
    transition: background-color var(--transition-fast);
}

.faq-question:hover {
    background-color: var(--bg-grey);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--accent-yellow);
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-normal);
    padding: 0 1.5rem;
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    padding: 0 1.5rem 1.5rem;
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.8;
}

.faq-answer ul {
    margin-left: 1.5rem;
    margin-top: 1rem;
}

.faq-answer li {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

/* ===== CONTACT FORM ===== */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-form {
    background-color: var(--bg-grey);
    padding: 2.5rem;
    border-radius: 8px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--primary-navy);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--light-grey);
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-yellow);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.contact-info {
    background-color: var(--primary-navy);
    color: var(--white);
    padding: 2.5rem;
    border-radius: 8px;
}

.contact-info h3 {
    color: var(--white);
    margin-bottom: 2rem;
}

.contact-detail {
    margin-bottom: 2rem;
}

.contact-detail h4 {
    color: var(--accent-yellow);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-detail p {
    color: var(--light-grey);
    margin: 0;
}

.success-message {
    background-color: #10b981;
    color: var(--white);
    padding: 1rem;
    border-radius: 4px;
    margin-top: 1rem;
    display: none;
}

.success-message.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* ===== GALLERY ===== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    aspect-ratio: 4/3;
    background-color: var(--bg-grey);
}

.gallery-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
    background-color: var(--bg-grey);
    display: block;
}

.gallery-image[src=""] {
    background: linear-gradient(135deg, var(--steel-grey) 0%, var(--light-grey) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-image[src=""]::after {
    content: 'Image Loading...';
    color: var(--text-light);
    font-size: 0.9rem;
}

.gallery-item:hover .gallery-image {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: var(--white);
    padding: 1.5rem;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-caption {
    font-weight: 600;
    font-size: 1.1rem;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    position: relative;
}

.lightbox-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--white);
    font-size: 2rem;
    cursor: pointer;
    padding: 0.5rem;
}

.lightbox-close:hover {
    color: var(--accent-yellow);
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--dark-navy);
    color: var(--white);
    padding: 3rem 20px 1.5rem;
    margin-top: 4rem;
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section p,
.footer-section a {
    color: var(--light-grey);
    margin-bottom: 0.5rem;
    display: block;
}

.footer-section a:hover {
    color: var(--accent-yellow);
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--light-grey);
    font-size: 0.9rem;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* Smooth scale animation for interactive elements */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scroll Reveal Animation - Enhanced */
.fade-in {
    opacity: 0;
    transform: translateY(50px) scale(0.95);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Stagger animation for grids */
.stats-grid .fade-in.visible,
.product-grid .fade-in.visible,
.clients-grid .fade-in.visible {
    animation: slideUpFade 0.6s ease forwards;
}

.stats-grid .stat-card:nth-child(1).fade-in.visible { animation-delay: 0.1s; }
.stats-grid .stat-card:nth-child(2).fade-in.visible { animation-delay: 0.2s; }
.stats-grid .stat-card:nth-child(3).fade-in.visible { animation-delay: 0.3s; }
.stats-grid .stat-card:nth-child(4).fade-in.visible { animation-delay: 0.4s; }

.product-grid .product-card:nth-child(1).fade-in.visible { animation-delay: 0.1s; }
.product-grid .product-card:nth-child(2).fade-in.visible { animation-delay: 0.2s; }
.product-grid .product-card:nth-child(3).fade-in.visible { animation-delay: 0.3s; }

@keyframes slideUpFade {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    /* Typography */
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    /* Navigation - Mobile */
    .menu-toggle {
        display: flex !important;
        align-items: center;
        justify-content: center;
        order: 2;
        margin-left: auto;
    }
    
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--primary-navy);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        z-index: 999;
        display: block;
        width: 100%;
    }
    
    .nav.active {
        max-height: 600px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0;
        padding: 0.5rem 0;
        width: 100%;
        display: flex;
    }
    
    .nav-item {
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-item:last-child {
        border-bottom: none;
    }
    
    .nav-link {
        padding: 1rem 20px;
        display: block;
        width: 100%;
        transition: background-color var(--transition-fast);
    }
    
    .nav-link:hover {
        background-color: rgba(245, 158, 11, 0.1);
    }
    
    .nav-link::after {
        display: none;
    }
    
    .dropdown {
        width: 100%;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background-color: var(--dark-navy);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        box-shadow: none;
        width: 100%;
        padding: 0;
        margin: 0;
    }
    
    .dropdown.active .dropdown-menu {
        max-height: 200px;
    }
    
    .dropdown-menu .nav-link {
        padding-left: 2.5rem;
        font-size: 0.95rem;
    }
    
    /* Hero */
    .hero {
        padding: 80px 20px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    /* Grids */
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    /* Product Detail */
    .product-detail-content {
        grid-template-columns: 1fr;
    }
    
    /* Contact */
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    /* Sections */
    .section {
        padding: 60px 20px;
    }
    
    /* Footer */
    .footer-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.hidden {
    display: none;
}