/* Palette: Asphalt, Concrete, Signal Yellow, Black */
:root {
    --bg: #F0F0F0;
    --dark: #1A1A1A;
    --grey: #333333;
    --yellow: #F4D03F;
    --concrete: #95A5A6;
    --white: #FFFFFF;
    
    --font-head: 'Oswald', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

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

body {
    background-color: var(--bg);
    color: var(--dark);
    font-family: var(--font-body);
    line-height: 1.6;
}

.container { width: 90%; max-width: 1200px; margin: 0 auto; }
.section-padding { padding: 100px 0; }
a { text-decoration: none; color: inherit; transition: 0.3s; }
img { max-width: 100%; height: auto; display: block; filter: grayscale(20%); }

/* Header */
.dynamic-header { background: var(--dark); padding: 20px 0; position: sticky; top: 0; z-index: 1000; border-bottom: 4px solid var(--yellow); }
.header-row { display: flex; justify-content: space-between; align-items: center; }

.logo { font-family: var(--font-head); font-size: 1.8rem; font-weight: 700; color: var(--white); letter-spacing: 1px; }
.yellow-box { background: var(--yellow); color: var(--dark); padding: 2px 8px; margin-left: 5px; }

.ind-nav a { margin-left: 25px; font-family: var(--font-head); font-weight: 500; color: #999; font-size: 0.9rem; letter-spacing: 1px; }
.ind-nav a:hover, .ind-nav a.active { color: var(--yellow); }

.burger-menu { display: none; background: none; border: 1px solid var(--yellow); color: var(--yellow); padding: 5px 10px; cursor: pointer; font-family: var(--font-head); }

/* Mobile Menu */
.mobile-menu-overlay { position: fixed; top: 0; right: -100%; width: 100%; height: 100%; background: var(--dark); z-index: 2000; display: flex; flex-direction: column; justify-content: center; align-items: center; transition: 0.4s; }
.mobile-menu-overlay.active { right: 0; }
.close-btn { position: absolute; top: 20px; right: 20px; background: none; border: none; color: var(--white); font-size: 2rem; cursor: pointer; }
.mobile-menu-overlay a { font-family: var(--font-head); font-size: 2rem; color: var(--white); margin: 15px 0; font-weight: 700; }
.mobile-menu-overlay a:hover { color: var(--yellow); }

@media (max-width: 900px) {
    .ind-nav { display: none; }
    .burger-menu { display: block; }
}

/* Hero */
.hero-industrial { height: 90vh; position: relative; display: flex; align-items: center; }
.hero-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-size: cover; background-position: center; filter: grayscale(100%); }
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(26,26,26,0.8); }
.hero-content { position: relative; z-index: 10; color: var(--white); border-left: 5px solid var(--yellow); padding-left: 40px; }

.label-tech { font-family: var(--font-head); letter-spacing: 3px; color: var(--yellow); font-size: 0.9rem; }
.hero-content h1 { font-family: var(--font-head); font-size: 5rem; line-height: 0.9; margin: 20px 0; text-transform: uppercase; }
.hero-content p { font-size: 1.2rem; max-width: 500px; margin-bottom: 40px; color: #ccc; }

.btn-industrial { background: var(--yellow); color: var(--dark); padding: 15px 40px; font-family: var(--font-head); font-weight: 700; border: none; cursor: pointer; display: inline-block; clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px); }
.btn-industrial:hover { background: var(--white); }

/* Services Strip */
.services-strip { background: var(--dark); color: var(--white); padding: 50px 0; border-bottom: 1px solid #333; }
.strip-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.srv-item h3 { font-family: var(--font-head); font-size: 1.5rem; color: var(--yellow); margin-bottom: 10px; }
.srv-item p { color: #999; font-size: 0.9rem; }

/* Projects */
.section-title h2 { font-family: var(--font-head); font-size: 3rem; text-transform: uppercase; line-height: 1; }
.yellow-line { width: 80px; height: 6px; background: var(--yellow); margin: 15px 0 50px; }
.text-center { text-align: center; }
.center .yellow-line { margin: 15px auto; }

.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.p-card { position: relative; cursor: pointer; overflow: hidden; }
.p-card img { width: 100%; height: 400px; object-fit: cover; transition: 0.5s; }
.p-card:hover img { transform: scale(1.1); filter: grayscale(100%); }
.p-overlay { position: absolute; bottom: 0; left: 0; width: 100%; background: rgba(26,26,26,0.9); padding: 20px; color: var(--white); transform: translateY(100%); transition: 0.3s; }
.p-card:hover .p-overlay { transform: translateY(0); }
.p-overlay h3 { font-family: var(--font-head); margin-bottom: 5px; color: var(--yellow); }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-text h1 { font-family: var(--font-head); font-size: 3rem; margin-bottom: 20px; }
.lead { font-size: 1.2rem; font-weight: 700; color: var(--grey); margin-bottom: 20px; }
.spec-list { margin-top: 30px; font-family: var(--font-head); font-size: 1.1rem; list-style: none; }
.spec-list li { margin-bottom: 10px; color: var(--dark); font-weight: 700; }
.about-img img { border: 10px solid var(--white); box-shadow: 10px 10px 0 var(--concrete); }

/* Testimonials */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.t-card { background: var(--white); padding: 40px; border: 1px solid #ddd; position: relative; }
.t-card.highlight { border-top: 4px solid var(--yellow); }
.t-header { font-family: var(--font-head); font-size: 1.2rem; margin-bottom: 15px; font-weight: 700; }
.t-card p { font-style: italic; color: #555; margin-bottom: 20px; }
.t-author { font-size: 0.8rem; font-weight: 700; color: var(--concrete); text-transform: uppercase; }

/* Contact */
.contact-construct { display: grid; grid-template-columns: 1fr 1.5fr; gap: 60px; background: var(--white); padding: 60px; border: 1px solid #ddd; }
.contact-info h2 { font-family: var(--font-head); font-size: 2.5rem; margin-bottom: 30px; }
.info-block { margin-bottom: 25px; border-left: 3px solid var(--yellow); padding-left: 15px; }
.info-block strong { font-family: var(--font-head); font-size: 0.9rem; color: #999; }
.info-block p { font-weight: 700; font-size: 1.1rem; }

.industrial-form .input-group { margin-bottom: 20px; }
.industrial-form label { display: block; font-family: var(--font-head); font-size: 0.8rem; margin-bottom: 5px; color: #666; }
.industrial-form input, .industrial-form select, .industrial-form textarea { width: 100%; padding: 15px; background: #f9f9f9; border: 1px solid #ddd; font-family: var(--font-body); font-size: 1rem; }
.industrial-form input:focus { border-color: var(--yellow); outline: none; }
.btn-yellow { background: var(--yellow); color: var(--dark); border: none; padding: 15px 50px; font-family: var(--font-head); font-weight: 700; cursor: pointer; text-transform: uppercase; transition: 0.3s; }
.btn-yellow:hover { background: var(--dark); color: var(--yellow); }

/* Legal */
.legal-block { background: var(--white); padding: 60px; max-width: 800px; margin: 0 auto; }
.legal-block h1 { font-family: var(--font-head); }

/* Footer */
.industrial-footer { background: var(--dark); color: #777; padding: 60px 0 20px; margin-top: 100px; }
.footer-flex { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #333; padding-bottom: 30px; margin-bottom: 20px; }
.f-info h4 { color: var(--white); font-family: var(--font-head); margin-bottom: 5px; }
.f-links a { margin-left: 20px; font-family: var(--font-head); font-size: 0.9rem; }
.f-links a:hover { color: var(--yellow); }
.copyright { text-align: center; font-size: 0.7rem; font-family: var(--font-head); letter-spacing: 1px; }

@media (max-width: 900px) {
    .strip-grid, .project-grid, .about-grid, .testimonials-grid, .contact-construct, .footer-flex { grid-template-columns: 1fr; flex-direction: column; }
    .hero-content h1 { font-size: 3rem; }
    .hero-content { border-left: none; padding-left: 0; text-align: center; }
    .btn-industrial { width: 100%; display: block; }
    .footer-flex { text-align: center; gap: 20px; }
}