:root {
    --primary-color: #f7b731; /* Safety Yellow */
    --primary-dark: #eb9b00;
    --secondary-color: #2d3436; /* Industrial Grey */
    --accent-color: #0984e3; /* Industrial Blue */
    --text-color: #2d3436;
    --text-light: #636e72;
    --bg-light: #f9f9f9;
    --white: #ffffff;
    --black: #000000;
    --header-height: 80px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Roboto', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, .logo-text, .btn {
    font-family: 'Oswald', sans-serif;
    text-transform: uppercase;
    font-weight: 700;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.d-block { display: block; }
.highlight { color: var(--primary-color); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    font-size: 16px;
    letter-spacing: 1px;
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--black);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

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

.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-block { width: 100%; display: block; }

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--secondary-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loader-content {
    text-align: center;
}

.loader-bar {
    width: 150px;
    height: 4px;
    background: rgba(255,255,255,0.1);
    position: relative;
    overflow: hidden;
    margin-bottom: 10px;
}

.loader-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    animation: loading 1.5s infinite;
}

.loader-text {
    color: var(--white);
    font-family: 'Oswald', sans-serif;
    letter-spacing: 4px;
    font-weight: 700;
}

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

/* Header */
.header {
    height: var(--header-height);
    background: rgba(45, 52, 70, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    transition: var(--transition);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.header.scrolled {
    height: 70px;
    background: var(--secondary-color);
    box-shadow: var(--shadow);
}

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

.logo-text {
    font-size: 28px;
    color: var(--white);
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-link {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.lang-switcher {
    display: flex;
    background: rgba(0,0,0,0.2);
    border-radius: 20px;
    padding: 3px;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--white);
    padding: 4px 10px;
    cursor: pointer;
    font-size: 11px;
    font-weight: 700;
    border-radius: 15px;
    transition: var(--transition);
}

.lang-btn.active {
    background: var(--primary-color);
    color: var(--black);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle .bar {
    width: 28px;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--white);
    position: relative;
    padding-top: var(--header-height);
}

.hero-content {
    max-width: 700px;
}

.hero-title {
    font-size: 72px;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    color: rgba(255,255,255,0.9);
    max-width: 500px;
}

.hero-btns {
    display: flex;
    gap: 20px;
}

.hero-badge {
    position: absolute;
    bottom: 50px;
    right: 50px;
    background: var(--white);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    border-left: 5px solid var(--primary-color);
    box-shadow: var(--shadow-lg);
    color: var(--secondary-color);
}

.badge-icon {
    font-size: 30px;
    color: var(--primary-color);
}

.badge-title {
    display: block;
    font-weight: 700;
    font-size: 18px;
    text-transform: uppercase;
    font-family: 'Oswald', sans-serif;
}

.badge-desc {
    font-size: 14px;
    color: var(--text-light);
}

/* Stats Section */
.stats {
    background: var(--secondary-color);
    padding: 60px 0;
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

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

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

.stat-number {
    font-size: 48px;
    font-weight: 700;
    font-family: 'Oswald', sans-serif;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255,255,255,0.7);
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 42px;
    margin-bottom: 15px;
}

.section-divider {
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    margin: 0 auto 20px;
}

.section-subtitle {
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-light);
}

/* Services Section */
.services {
    padding: 100px 0;
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 50px 30px;
    border-radius: 8px;
    text-align: center;
    transition: var(--transition);
    border-bottom: 3px solid transparent;
    box-shadow: var(--shadow);
}

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

.service-icon {
    width: 80px;
    height: 80px;
    background: rgba(247, 183, 49, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 25px;
    font-size: 32px;
    color: var(--primary-color);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--primary-color);
    color: var(--black);
}

.service-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-light);
    font-size: 15px;
}

/* Portfolio Section */
.portfolio {
    padding: 100px 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    aspect-ratio: 16/10;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.2) 100%);
    display: flex;
    align-items: flex-end;
    padding: 30px;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-item:hover img {
    transform: scale(1.1);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-info {
    color: var(--white);
    transform: translateY(20px);
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-info {
    transform: translateY(0);
}

.portfolio-info h4 {
    font-size: 24px;
    margin-bottom: 5px;
}

.portfolio-info p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 10px;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-color);
    color: var(--black);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 4px;
}

/* Estimator Section */
.estimator {
    padding: 100px 0;
    background: var(--secondary-color);
    color: var(--white);
}

.estimator-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    color: var(--text-color);
}

.estimator-content {
    padding: 60px;
}

.estimator-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.calc-form {
    margin-top: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
    font-size: 16px;
    outline: none;
}

.calc-results {
    background: var(--bg-light);
    padding: 25px;
    border-radius: 8px;
    margin: 30px 0;
    border-left: 4px solid var(--primary-color);
}

.calc-result-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.calc-result-item:last-child { margin-bottom: 0; }

.calc-result-item .label {
    font-weight: 500;
}

.calc-result-item .value {
    font-weight: 700;
    color: var(--primary-dark);
    font-size: 20px;
}

.disclaimer {
    font-size: 12px;
    color: var(--text-light);
    font-style: italic;
}

/* Process Section */
.process {
    padding: 100px 0;
}

.process-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    width: 2px;
    height: 100%;
    background: #ddd;
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 50%;
    position: relative;
    margin-bottom: 50px;
    width: 100%;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 50%;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 0;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: var(--black);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 700;
    transform: translateX(-50%);
    z-index: 1;
    border: 4px solid var(--white);
    box-shadow: var(--shadow);
}

.timeline-content {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    width: 85%;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 40px;
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 40px;
}

.timeline-content h4 {
    margin-bottom: 10px;
    font-size: 20px;
    color: var(--secondary-color);
}

/* Info Section (Safety & FAQ) */
.info-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.section-title-sm {
    font-size: 28px;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 15px;
}

.section-title-sm::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 3px;
    background: var(--primary-color);
}

.safety-list {
    list-style: none;
}

.safety-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    font-weight: 500;
}

.safety-list li i {
    color: var(--primary-color);
    font-size: 20px;
}

.accordion-item {
    margin-bottom: 10px;
    background: var(--white);
    border-radius: 4px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 18px 25px;
    background: none;
    border: none;
    text-align: left;
    font-family: inherit;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.accordion-header::after {
    content: '\f0fe';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    transition: var(--transition);
}

.accordion-item.active .accordion-header {
    background: var(--primary-color);
}

.accordion-item.active .accordion-header::after {
    content: '\f146';
    transform: rotate(180deg);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-body p {
    padding: 20px 25px;
    color: var(--text-light);
    font-size: 15px;
}

.accordion-item.active .accordion-body {
    max-height: 200px;
}

/* Contact Section */
.contact {
    padding: 100px 0;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

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

.contact-card i {
    width: 50px;
    height: 50px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--primary-color);
    font-size: 20px;
}

.contact-card h5 {
    font-size: 18px;
    margin-bottom: 5px;
}

.contact-card p {
    color: var(--text-light);
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    transition: var(--transition);
}

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

.contact-form {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 12px;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
    outline: none;
}

.contact-form input:focus, .contact-form textarea:focus {
    border-color: var(--primary-color);
}

/* Footer */
.footer {
    background: var(--secondary-color);
    color: var(--white);
    padding: 40px 0;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* Mobile Nav Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100%;
    background: var(--secondary-color);
    z-index: 2000;
    transition: 0.4s cubic-bezier(0.77, 0, 0.175, 1);
}

.mobile-menu-overlay.active {
    right: 0;
}

.mobile-menu {
    padding: 30px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 50px;
}

.close-menu {
    background: none;
    border: none;
    color: var(--white);
    font-size: 40px;
    cursor: pointer;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.mobile-link {
    color: var(--white);
    text-decoration: none;
    font-size: 24px;
    font-family: 'Oswald', sans-serif;
    text-transform: uppercase;
}

.mobile-contact {
    margin-top: auto;
    color: rgba(255,255,255,0.6);
}

.mobile-contact p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Sticky Call Button */
.sticky-call {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: var(--black);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(247, 183, 49, 0.7); }
    70% { box-shadow: 0 0 0 20px rgba(247, 183, 49, 0); }
    100% { box-shadow: 0 0 0 0 rgba(247, 183, 49, 0); }
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-title { font-size: 56px; }
    .estimator-wrapper, .info-grid, .contact-wrapper {
        grid-template-columns: 1fr;
    }
    .estimator-image { order: -1; height: 300px; }
}

@media (max-width: 768px) {
    .nav-links, .header .btn-sm { display: none; }
    .mobile-toggle { display: flex; }
    .hero-title { font-size: 42px; }
    .hero { text-align: center; justify-content: center; }
    .hero-content { margin: 0 auto; }
    .hero-btns { justify-content: center; flex-direction: column; }
    .hero-badge { display: none; }
    .process-timeline::before { left: 40px; }
    .timeline-item { padding-right: 0; padding-left: 80px; justify-content: flex-start; }
    .timeline-item:nth-child(even) { padding-left: 80px; }
    .timeline-dot { left: 40px; }
    .timeline-content { width: 100%; margin: 0 !important; }
    .section-title { font-size: 32px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 36px; }
    .portfolio-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}