/* ===== ROOT VARIABLES ===== */
:root {
    /* Colors - Based on company branding */
    --primary: #4A3F8C;
    --primary-dark: #362D6E;
    --primary-light: #6B5CB3;
    --secondary: #C4A962;
    --secondary-dark: #A08941;
    --accent: #2B2D42;
    --dark: #1A1A2E;
    --light: #F8F9FA;
    --gray: #6C757D;
    --gray-light: #E9ECEF;
    --white: #FFFFFF;
    --success: #28A745;
    --danger: #DC3545;

    /* Typography */
    --font-ar: 'Cairo', sans-serif;
    --font-en: 'Roboto', sans-serif;

    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 20px;

    /* Transitions */
    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.2);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.25);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50%;
}

/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-ar);
    line-height: 1.7;
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

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

ul, ol {
    list-style: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ===== PRELOADER ===== */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader svg,
.preloader-logo {
    animation: pulse 1.5s ease-in-out infinite;
}

.preloader-logo {
    width: 100px !important;
    height: 100px !important;
    max-width: 100px !important;
    max-height: 100px !important;
    object-fit: contain !important;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.7; }
}

/* ===== CONTAINER ===== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

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

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

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

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
}

/* ===== SECTION STYLES ===== */
.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 20px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 15px;
}

.section-header h2 {
    color: var(--dark);
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.1rem;
}

.section-header.light h2 {
    color: var(--white);
}

.section-header.light p {
    color: rgba(255,255,255,0.8);
}

.bg-light {
    background-color: var(--light);
}

.bg-dark {
    background: linear-gradient(135deg, var(--dark), var(--accent));
}

.bg-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: var(--white);
    box-shadow: var(--shadow-md);
    padding: 10px 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 55px !important;
    height: 55px !important;
    max-width: 55px !important;
    max-height: 55px !important;
    object-fit: contain !important;
    border-radius: 4px;
}

/* For navbar scrolled state - keep original colors */
.navbar.scrolled .logo-img {
    filter: none;
}

/* For navbar at top (transparent background) - show original logo on light bg */
.navbar:not(.scrolled) .logo-img {
    background: rgba(255,255,255,0.95);
    padding: 4px;
    border-radius: 6px;
}

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

.logo-ar {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.3;
    white-space: nowrap;
}

.logo-en {
    font-family: var(--font-en);
    font-size: 0.6rem;
    font-weight: 500;
    color: var(--gray);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.navbar:not(.scrolled) .logo-ar,
.navbar:not(.scrolled) .logo-en {
    color: var(--white);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 35px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--dark);
    position: relative;
    padding: 5px 0;
}

.navbar:not(.scrolled) .nav-link {
    color: var(--white);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition);
}

.navbar:not(.scrolled) .nav-toggle span {
    background: var(--white);
}

.nav-cta {
    display: flex;
}

.nav-cta .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--dark) 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?w=1920&h=1080&fit=crop') center/cover;
    opacity: 0.15;
}

.geometric-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.shape {
    position: absolute;
    border: 2px solid rgba(255,255,255,0.1);
}

.shape-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.shape-2 {
    width: 200px;
    height: 200px;
    bottom: 20%;
    left: 10%;
    transform: rotate(45deg);
    animation: float 15s ease-in-out infinite reverse;
}

.shape-3 {
    width: 0;
    height: 0;
    border-left: 150px solid transparent;
    border-right: 150px solid transparent;
    border-bottom: 260px solid rgba(255,255,255,0.05);
    bottom: -50px;
    right: 20%;
    animation: float 25s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    color: var(--white);
}

.hero-badge {
    display: inline-block;
    padding: 8px 24px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 25px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero h1 .highlight {
    color: var(--secondary);
    display: block;
}

.hero p {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.85);
    margin-bottom: 35px;
    max-width: 550px;
}

.hero-btns {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.hero-stats {
    display: flex;
    gap: 50px;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--secondary);
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    margin-top: 5px;
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.hero-scroll a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-size: 0.85rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}

/* ===== ABOUT SECTION ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content h3 {
    color: var(--primary);
    margin-bottom: 20px;
}

.about-content p {
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin: 30px 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    background: var(--light);
    border-radius: var(--radius-md);
}

.feature-item i {
    color: var(--success);
    font-size: 1.1rem;
}

.feature-item span {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--dark);
}

.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.image-wrapper img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.experience-badge {
    position: absolute;
    bottom: 30px;
    right: 30px;
    background: var(--secondary);
    color: var(--white);
    padding: 25px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
}

.experience-badge .years {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
}

.experience-badge .text {
    font-size: 0.85rem;
    margin-top: 5px;
}

/* ===== VISION & MISSION ===== */
.vm-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.vm-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.vm-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.vm-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.vm-icon i {
    font-size: 2rem;
    color: var(--white);
}

.vm-card h3 {
    color: var(--primary);
    margin-bottom: 15px;
}

.vm-card p {
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ===== SERVICES SECTION ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--gray-light);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 4px;
    height: 0;
    background: var(--primary);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.service-card:hover::before {
    height: 100%;
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.service-icon i {
    font-size: 1.75rem;
    color: var(--white);
}

.service-card h3 {
    font-size: 1.25rem;
    color: var(--dark);
    margin-bottom: 15px;
}

.service-card p {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== PRODUCTS SECTION ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-bottom: 50px;
}

.product-card {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.15);
    padding: 35px 25px;
    border-radius: var(--radius-lg);
    color: var(--white);
    transition: var(--transition);
}

.product-card:hover {
    background: rgba(255,255,255,0.12);
    transform: translateY(-5px);
}

.product-image {
    width: 70px;
    height: 70px;
    background: var(--secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.product-image i {
    font-size: 1.75rem;
    color: var(--dark);
}

.product-card h4 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.product-card p {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.product-card ul {
    margin-top: 15px;
}

.product-card ul li {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.8);
    padding: 5px 0;
    padding-right: 20px;
    position: relative;
}

.product-card ul li::before {
    content: '✓';
    position: absolute;
    right: 0;
    color: var(--secondary);
}

.products-cta {
    text-align: center;
}

/* ===== PROJECTS SECTION ===== */
.projects-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray);
    background: var(--light);
    border-radius: 50px;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: var(--white);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.project-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.project-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

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

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 25px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: var(--white);
    transform: translateY(100%);
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    transform: translateY(0);
}

.project-overlay h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.project-overlay p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 0;
}

/* ===== STATS SECTION ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-card {
    text-align: center;
    padding: 40px 20px;
    color: var(--white);
}

.stat-card i {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--secondary);
}

.stat-card .stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
}

.stat-card .stat-label {
    font-size: 1rem;
    color: rgba(255,255,255,0.8);
    margin-top: 10px;
}

/* ===== CLIENTS SECTION ===== */
.clients-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.client-logo {
    background: var(--white);
    padding: 20px 15px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    border: 1px solid var(--gray-light);
    min-height: 100px;
}

.client-logo:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.client-logo img {
    max-height: 50px;
    opacity: 0.7;
    transition: var(--transition);
    filter: grayscale(100%);
}

.client-logo:hover img {
    opacity: 1;
    filter: grayscale(0%);
}

.client-text {
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--dark);
    line-height: 1.4;
}

.client-text strong {
    font-size: 1.2rem;
    font-weight: 700;
    display: block;
}

.client-text small {
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--gray);
    display: block;
    margin-top: 3px;
}

/* ===== CERTIFICATIONS SECTION ===== */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 25px;
}

.cert-card {
    background: var(--white);
    padding: 30px 20px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.cert-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.cert-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-full);
}

.cert-icon i {
    font-size: 2rem;
    color: var(--white);
}

.cert-icon img {
    max-width: 100%;
    max-height: 100%;
}

.cert-card h4 {
    font-size: 1rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.cert-card p {
    font-size: 0.85rem;
    margin-bottom: 0;
}

/* ===== CONTACT SECTION ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.4rem;
    color: var(--white);
}

.contact-details h4 {
    font-size: 1rem;
    color: var(--dark);
    margin-bottom: 5px;
}

.contact-details a,
.contact-details p {
    font-size: 1rem;
    color: var(--gray);
    margin-bottom: 0;
}

.contact-details a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.social-link {
    width: 45px;
    height: 45px;
    background: var(--light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    position: relative;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    padding-right: 50px;
    background: var(--light);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group textarea {
    resize: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--white);
}

.form-group i {
    position: absolute;
    top: 50%;
    right: 18px;
    transform: translateY(-50%);
    color: var(--gray);
    pointer-events: none;
}

.form-group textarea + i {
    top: 20px;
    transform: none;
}

.contact-form .btn {
    grid-column: 1 / -1;
    justify-self: start;
}

/* ===== MAP SECTION ===== */
.map-section {
    position: relative;
}

.map-section iframe {
    display: block;
    filter: grayscale(20%);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--dark);
    color: var(--white);
}

.footer-top {
    padding: 80px 0 50px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo-img {
    width: 55px !important;
    height: 55px !important;
    max-width: 55px !important;
    max-height: 55px !important;
    object-fit: contain !important;
    background: rgba(255,255,255,0.95);
    padding: 4px;
    border-radius: 6px;
}

.footer-logo span {
    font-size: 1.3rem;
    font-weight: 700;
}

.footer-about p {
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--secondary);
    color: var(--dark);
}

.footer-links h4,
.footer-services h4,
.footer-contact h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 15px;
}

.footer-links h4::after,
.footer-services h4::after,
.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 40px;
    height: 3px;
    background: var(--secondary);
}

.footer-links ul li,
.footer-services ul li {
    margin-bottom: 12px;
}

.footer-links ul li a,
.footer-services ul li a {
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-links ul li a:hover,
.footer-services ul li a:hover {
    color: var(--secondary);
    padding-right: 10px;
}

.footer-contact ul li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
}

.footer-contact ul li i {
    color: var(--secondary);
    width: 20px;
}

.footer-contact ul li a {
    color: rgba(255,255,255,0.7);
}

.footer-contact ul li a:hover {
    color: var(--secondary);
}

.footer-bottom {
    background: rgba(0,0,0,0.2);
    padding: 20px 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    margin-bottom: 0;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
}

.iso-badges {
    display: flex;
    gap: 15px;
}

.iso-badges span {
    font-family: var(--font-en);
    font-size: 0.75rem;
    padding: 5px 12px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    color: rgba(255,255,255,0.7);
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* ===== WHATSAPP FLOAT ===== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    animation: pulse-whatsapp 2s infinite;
}

@keyframes pulse-whatsapp {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

.whatsapp-float:hover {
    transform: scale(1.1);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cert-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .clients-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 30px 30px;
        gap: 20px;
        box-shadow: var(--shadow-xl);
        transition: var(--transition);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu .nav-link {
        color: var(--dark);
        font-size: 1.1rem;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-cta {
        display: none;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        order: -1;
    }

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

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 70px 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-stats {
        gap: 30px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

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

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

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

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .stat-card {
        padding: 25px 15px;
    }

    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-form {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links h4::after,
    .footer-services h4::after,
    .footer-contact h4::after {
        right: 50%;
        transform: translateX(50%);
    }

    .footer-bottom-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

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

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

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

    .hero-btns .btn {
        width: 100%;
    }

    .projects-filter {
        gap: 10px;
    }

    .filter-btn {
        padding: 8px 18px;
        font-size: 0.85rem;
    }

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

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

    .whatsapp-float {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .back-to-top {
        width: 45px;
        height: 45px;
    }
}