:root {
    --color-charcoal: #111317;
    --color-charcoal-light: #1a1d21;
    --color-steel: #4b5563;
    --color-silver: #9ca3af;
    --color-white: #ffffff;
    --color-accent: #f59e0b;
    --color-accent-dark: #d97706;
    --color-light: #f3f4f6;
    --color-metal: #2a2d35;
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Inter', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    background-color: var(--color-white);
    color: var(--color-charcoal);
    line-height: 1.6;
    overflow-x: hidden;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-accent);
    color: #000;
    padding: 8px 16px;
    z-index: 9999;
    transition: top 0.3s;
}
.skip-link:focus { top: 0; }

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.section-title {
    font-weight: 700;
    position: relative;
    display: inline-block;
    margin-bottom: 1rem;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--color-accent);
    margin-top: 0.75rem;
}

.section-subtitle {
    color: var(--color-accent);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.section-subtitle::before {
    content: '';
    display: inline-block;
    width: 30px;
    height: 3px;
    background: var(--color-accent);
}
.section-subtitle.text-white-50::before { background: var(--color-accent); }
.section-subtitle.text-accent { color: var(--color-accent); }

.btn-accent {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: #000;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
}

.btn-accent:hover, .btn-accent:focus {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: #fff;
    transform: translateY(-2px);
}

.btn-outline-light:hover { background-color: var(--color-accent); border-color: var(--color-accent); color: #000; }

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1030;
    transition: background-color 0.3s, box-shadow 0.3s;
    background: transparent;
}

.site-header.scrolled {
    background: rgba(26, 29, 33, 0.95);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    backdrop-filter: blur(8px);
}

.navbar-brand { color: #fff; }
.brand-icon {
    font-size: 2rem;
    color: var(--color-accent);
}
.brand-name { display: block; font-family: var(--font-heading); font-weight: 700; font-size: 1.25rem; line-height: 1; letter-spacing: 0.04em; }
.brand-tagline { display: block; font-size: 0.65rem; letter-spacing: 0.15em; color: var(--color-silver); }

.nav-link {
    color: rgba(255,255,255,0.85) !important;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    padding: 0.75rem 1rem !important;
    transition: color 0.3s;
}

.nav-link:hover, .nav-link.active, .nav-link:focus { color: var(--color-accent) !important; }

.navbar-toggler { border-color: rgba(255,255,255,0.3); }
.navbar-toggler-icon { filter: invert(1); }

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(26,29,33,0.8), rgba(26,29,33,0.85)), url('../images/hero-bg.svg') center/cover no-repeat;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26,29,33,0.9) 0%, rgba(26,29,33,0.6) 100%);
    z-index: -1;
}

.hero-content { position: relative; z-index: 1; padding: 120px 20px 80px; }
.hero-title { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 700; line-height: 1.1; margin-bottom: 1.5rem; }
.hero-title .accent-text { color: var(--color-accent); }
.hero-subtitle { font-size: clamp(1rem, 2vw, 1.35rem); color: var(--color-silver); max-width: 700px; margin: 0 auto 2rem; }

.section-padding { padding: 80px 0; }
.section-dark { background-color: var(--color-charcoal); color: #fff; }
.section-light { background-color: var(--color-light); }

.service-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    padding: 2rem 1.5rem;
    height: 100%;
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

.service-card:hover { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(0,0,0,0.1); }
.service-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--color-light);
    color: var(--color-accent-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin: 0 auto 1.25rem;
}

.why-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 0.5rem;
    padding: 1.75rem;
    height: 100%;
    transition: background 0.3s;
}

.why-card:hover { background: rgba(255,255,255,0.08); }
.why-icon { font-size: 2rem; color: var(--color-accent); margin-bottom: 0.75rem; }

.project-card { position: relative; overflow: hidden; border-radius: 0.5rem; }
.project-card img { transition: transform 0.5s; width: 100%; height: 260px; object-fit: cover; }
.project-card:hover img { transform: scale(1.08); }
.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(26,29,33,0.95), transparent);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: opacity 0.3s;
}
.project-card:hover .project-overlay { opacity: 1; }

.gallery-item { position: relative; overflow: hidden; border-radius: 0.5rem; cursor: pointer; }
.gallery-item img { width: 100%; height: 260px; object-fit: cover; transition: transform 0.4s; }
.gallery-item:hover img { transform: scale(1.05); }
.gallery-caption {
    position: absolute;
    inset: 0;
    background: rgba(26,29,33,0.7);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
    text-align: center;
    padding: 1rem;
}
.gallery-item:hover .gallery-caption { opacity: 1; }

.client-logo {
    filter: grayscale(100%) brightness(1.2);
    opacity: 0.7;
    transition: all 0.3s;
    max-height: 70px;
    width: auto;
}
.client-logo:hover { filter: none; opacity: 1; }

.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
}

.testimonial-card {
    background: #fff;
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
    height: 100%;
}
.testimonial-stars { color: var(--color-accent); margin-bottom: 1rem; }

.quote-form, .contact-form {
    background: #fff;
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
}

.site-footer {
    background: var(--color-charcoal);
    color: #fff;
    padding: 70px 0 30px;
}

.footer-title {
    color: var(--color-accent);
    font-size: 1rem;
    margin-bottom: 1.25rem;
    letter-spacing: 0.05em;
}

.footer-links li { margin-bottom: 0.5rem; }
.footer-links a { color: var(--color-silver); text-decoration: none; transition: color 0.3s; }
.footer-links a:hover { color: var(--color-accent); }

.footer-contact li { color: var(--color-silver); margin-bottom: 0.75rem; }
.footer-contact a { color: var(--color-silver); text-decoration: none; }
.footer-contact a:hover { color: var(--color-accent); }
.footer-contact i { color: var(--color-accent); margin-right: 0.5rem; }

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    color: #fff;
    margin-right: 0.5rem;
    transition: all 0.3s;
}

.social-links a:hover { background: var(--color-accent); color: #000; transform: translateY(-3px); }

.whatsapp-float {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    background: #25d366;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    z-index: 1040;
    transition: transform 0.3s;
}
.whatsapp-float:hover { transform: scale(1.1); color: #fff; }

.back-to-top {
    position: fixed;
    bottom: 25px;
    right: 20px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--color-accent);
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 1040;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--color-accent-dark); color: #fff; }

.breadcrumb-banner {
    position: relative;
    padding: 140px 0 80px;
    background: linear-gradient(rgba(26,29,33,0.85), rgba(26,29,33,0.85)), url('../images/hero-bg.svg') center/cover no-repeat;
    color: #fff;
    text-align: center;
}

.page-content { padding: 80px 0; }

.form-control:focus, .form-select:focus { border-color: var(--color-accent); box-shadow: 0 0 0 0.2rem rgba(245, 158, 11, 0.25); }

@media (max-width: 991px) {
    .navbar-collapse {
        background: rgba(26,29,33,0.98);
        padding: 1rem;
        border-radius: 0.5rem;
        margin-top: 0.75rem;
    }
    .hero-title { font-size: 2.25rem; }
}

@media (max-width: 767px) {
    .section-padding { padding: 60px 0; }
    .stat-number { font-size: 2.25rem; }
}

/* Industrial texture helpers */
.bg-steel-pattern {
    background-color: var(--color-charcoal);
    background-image:
        linear-gradient(30deg, rgba(255,255,255,0.03) 12%, transparent 12.5%, transparent 87%, rgba(255,255,255,0.03) 87.5%, rgba(255,255,255,0.03)),
        linear-gradient(150deg, rgba(255,255,255,0.03) 12%, transparent 12.5%, transparent 87%, rgba(255,255,255,0.03) 87.5%, rgba(255,255,255,0.03)),
        linear-gradient(30deg, rgba(255,255,255,0.03) 12%, transparent 12.5%, transparent 87%, rgba(255,255,255,0.03) 87.5%, rgba(255,255,255,0.03)),
        linear-gradient(150deg, rgba(255,255,255,0.03) 12%, transparent 12.5%, transparent 87%, rgba(255,255,255,0.03) 87.5%, rgba(255,255,255,0.03));
    background-size: 80px 140px;
}

.section-diagonal {
    position: relative;
    clip-path: polygon(0 0, 100% 4%, 100% 100%, 0 96%);
}

/* Hero slider */
.hero-slider { position: absolute; inset: 0; z-index: -2; }
.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1.2s ease-in-out;
    background-size: cover;
    background-position: center;
}
.hero-slide.active { opacity: 1; }

/* Trust bar */
.trust-bar {
    background: var(--color-charcoal-light);
    color: #fff;
    padding: 1.5rem 0;
    border-top: 3px solid var(--color-accent);
}
.trust-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
}
.trust-icon { font-size: 1.5rem; color: var(--color-accent); }

/* Process timeline */
.process-timeline { position: relative; padding-left: 2rem; }
.process-timeline::before {
    content: '';
    position: absolute;
    left: 0.6rem;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-accent);
}
.process-step {
    position: relative;
    padding-bottom: 2rem;
}
.process-step::before {
    content: attr(data-step);
    position: absolute;
    left: -1.85rem;
    top: 0;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: var(--color-accent);
    color: #000;
    font-family: var(--font-heading);
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 4px solid var(--color-charcoal-light);
}

/* Equipment cards */
.equipment-card {
    background: #fff;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    transition: transform 0.3s;
    height: 100%;
}
.equipment-card:hover { transform: translateY(-6px); }
.equipment-card img { width: 100%; height: 200px; object-fit: cover; }
.equipment-card .spec-badge {
    background: var(--color-charcoal);
    color: var(--color-accent);
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    display: inline-block;
    margin-top: 0.5rem;
}

/* Industry cards */
.industry-card {
    position: relative;
    border-radius: 0.5rem;
    overflow: hidden;
    height: 280px;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
}
.industry-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.3) 60%, transparent 100%);
    z-index: 1;
}
.industry-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.industry-card:hover img { transform: scale(1.08); }
.industry-card .industry-content { position: relative; z-index: 2; }
.industry-icon { font-size: 2.5rem; color: var(--color-accent); margin-bottom: 0.5rem; }

/* Certifications */
.cert-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 0.5rem;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s;
}
.cert-card:hover { border-color: var(--color-accent); transform: translateY(-4px); }
.cert-card i { font-size: 2.5rem; color: var(--color-accent); margin-bottom: 0.75rem; }

/* Before/After */
.before-after {
    position: relative;
    width: 100%;
    height: 320px;
    overflow: hidden;
    border-radius: 0.5rem;
    cursor: ew-resize;
}
.before-after img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ba-after {
    position: absolute;
    inset: 0;
    width: 50%;
    overflow: hidden;
    border-right: 3px solid var(--color-accent);
}
.ba-label {
    position: absolute;
    top: 1rem;
    padding: 0.25rem 0.75rem;
    background: var(--color-accent);
    color: #000;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    z-index: 2;
}
.ba-label.before { left: 1rem; }
.ba-label.after { right: 1rem; }
.ba-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    background: var(--color-accent);
    transform: translateX(-50%);
    z-index: 3;
}
.ba-handle::after {
    content: '\2194';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-accent);
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* FAQ accordion */
.accordion-button {
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    background: #fff;
    box-shadow: none !important;
}
.accordion-button:not(.collapsed) { color: var(--color-accent); background: #fff; }
.accordion-button::after { filter: invert(0.5); }

/* Careers */
.career-card {
    background: #fff;
    border-left: 4px solid var(--color-accent);
    border-radius: 0 0.5rem 0.5rem 0;
    padding: 1.5rem;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s;
    height: 100%;
}
.career-card:hover { transform: translateX(8px); }
.career-meta { font-size: 0.85rem; color: var(--color-steel); }

/* Improved service cards */
.service-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    padding: 2rem 1.5rem;
    height: 100%;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--color-accent);
    transform: scaleX(0);
    transition: transform 0.3s;
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(0,0,0,0.12); border-color: var(--color-accent); }

/* Glassmorphism dark cards */
.glass-card {
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 0.75rem;
    padding: 2rem;
}

/* Modal */
.modal-content { border: none; border-radius: 0.75rem; overflow: hidden; }

/* Newsletter */
#newsletterMessage { min-height: 1.5rem; }

/* Callback float */
.callback-float {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--color-accent);
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
    z-index: 1020;
    transition: transform 0.3s;
}
.callback-float:hover { transform: scale(1.1); color: #000; }

@media (max-width: 767px) {
    .whatsapp-float { left: 20px; right: auto; bottom: 25px; }
    .callback-float { bottom: 90px; }
    .back-to-top { bottom: 25px; }
}

/* Honeypot field */
.hp-field { display: none; }

/* Badge accent */
.bg-accent { background-color: var(--color-accent) !important; }
.text-accent { color: var(--color-accent) !important; }