:root {
    --safety-orange: #FF6600;
    --structure-blue: #2C3E50;
    --concrete: #f0f2f5;
    --white: #ffffff;
    --black: #1a1a1a;
    
    --font-main: 'Barlow', sans-serif;
    --font-mono: 'Roboto Mono', monospace;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--concrete);
    color: var(--structure-blue);
    line-height: 1.6;
}

.container { width: 90%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a { text-decoration: none; color: inherit; transition: 0.3s; }

/* Safety Bar */
.safety-bar { background: var(--black); color: var(--safety-orange); font-family: var(--font-mono); font-size: 0.8rem; padding: 5px 0; text-align: center; font-weight: bold; letter-spacing: 1px; }
.safety-bar span { margin: 0 15px; }

/* Header */
.construct-header { background: var(--white); padding: 20px 0; border-bottom: 4px solid var(--structure-blue); position: sticky; top: 0; z-index: 1000; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
.header-flex { display: flex; justify-content: space-between; align-items: center; }

.logo { font-size: 2rem; font-weight: 800; color: var(--structure-blue); text-transform: uppercase; letter-spacing: -1px; }
.logo .orange { color: var(--safety-orange); }
.logo .icon { font-size: 1.5rem; margin-left: 5px; }

.construct-nav ul { display: flex; gap: 30px; list-style: none; align-items: center; }
.construct-nav a { font-weight: 600; color: var(--structure-blue); text-transform: uppercase; font-size: 0.9rem; }
.construct-nav a:hover, .construct-nav a.active { color: var(--safety-orange); border-bottom: 2px solid var(--safety-orange); }

.btn-construct { background: var(--safety-orange); color: var(--white) !important; padding: 10px 20px; border-radius: 2px; }
.btn-construct:hover { background: var(--structure-blue); }

/* Mobile Menu */
.mobile-toggle { display: none; background: var(--structure-blue); color: white; border: none; padding: 5px 10px; font-weight: bold; cursor: pointer; }
.mobile-menu { position: fixed; top: 0; right: -100%; width: 300px; height: 100%; background: var(--structure-blue); z-index: 2000; padding: 40px; display: flex; flex-direction: column; transition: 0.3s; border-left: 5px solid var(--safety-orange); }
.mobile-menu.active { right: 0; }
.close-menu { align-self: flex-end; background: none; border: none; color: var(--safety-orange); font-weight: bold; cursor: pointer; margin-bottom: 30px; }
.mobile-menu a { color: white; font-weight: 700; font-size: 1.2rem; margin-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 10px; }

/* Hero */
.hero-build { height: 600px; background-size: cover; background-position: center; position: relative; }
.hero-overlay { width: 100%; height: 100%; background: linear-gradient(to right, rgba(44, 62, 80, 0.9), rgba(44, 62, 80, 0.4)); display: flex; align-items: center; }
.hero-content { padding-left: 10%; max-width: 700px; color: var(--white); }
.id-tag { font-family: var(--font-mono); color: var(--safety-orange); background: rgba(0,0,0,0.5); padding: 5px 10px; font-size: 0.8rem; }
.hero-content h1 { font-size: 4rem; line-height: 1; margin: 20px 0; font-weight: 800; text-transform: uppercase; }
.hero-content p { font-size: 1.2rem; margin-bottom: 30px; max-width: 500px; }

.btn-primary { background: var(--safety-orange); color: var(--white); padding: 15px 30px; font-weight: 700; text-transform: uppercase; display: inline-block; margin-right: 15px; border-radius: 2px; }
.btn-outline { border: 2px solid var(--white); color: var(--white); padding: 13px 30px; font-weight: 700; text-transform: uppercase; display: inline-block; border-radius: 2px; }
.btn-primary:hover, .btn-outline:hover { background: var(--white); color: var(--structure-blue); }

/* Projects Grid */
.section-padding { padding: 80px 0; }
.section-head { margin-bottom: 50px; }
.section-head h2 { font-size: 2.5rem; font-weight: 800; color: var(--structure-blue); text-transform: uppercase; }
.orange-bar { width: 80px; height: 8px; background: var(--safety-orange); margin-top: 10px; }
.orange-bar.left { margin: 10px 0 30px 0; }

.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.project-card { background: var(--white); border: 1px solid #ddd; transition: 0.3s; }
.project-card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,0.1); border-bottom: 5px solid var(--safety-orange); }
.p-img { position: relative; height: 250px; overflow: hidden; }
.p-img img { width: 100%; height: 100%; object-fit: cover; }
.status { position: absolute; top: 10px; right: 10px; background: var(--safety-orange); color: white; padding: 5px 10px; font-weight: bold; font-size: 0.8rem; border-radius: 2px; }
.status.completed { background: #27ae60; }
.p-info { padding: 25px; }
.p-info h3 { margin-bottom: 10px; font-weight: 800; }
.specs { margin-top: 20px; list-style: none; font-family: var(--font-mono); font-size: 0.85rem; color: #666; border-top: 1px solid #eee; padding-top: 10px; }

/* About & Contact */
.page-header { background: var(--structure-blue); padding: 60px 0; text-align: center; color: var(--white); }
.page-header h1 { font-size: 3rem; font-weight: 800; text-transform: uppercase; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.text-block h2 { font-size: 2.2rem; font-weight: 800; }
.cert-list { margin-top: 30px; list-style: none; }
.cert-list li { margin-bottom: 10px; font-weight: 700; color: var(--structure-blue); }
.img-block img { width: 100%; border: 10px solid var(--white); box-shadow: 0 10px 30px rgba(0,0,0,0.1); }

.tender-form-wrapper { background: var(--white); padding: 50px; border: 1px solid #ddd; max-width: 800px; margin: 0 auto; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
.form-intro h2 { color: var(--safety-orange); font-weight: 800; margin-bottom: 20px; }
.contact-data { margin-top: 20px; font-weight: bold; border-left: 4px solid var(--structure-blue); padding-left: 15px; }

.blueprint-form { margin-top: 40px; }
.form-row { display: flex; gap: 20px; }
.input-group { margin-bottom: 20px; flex: 1; }
.input-group label { display: block; font-weight: 700; margin-bottom: 5px; color: var(--structure-blue); font-size: 0.9rem; }
.input-group input, .input-group select, .input-group textarea { width: 100%; padding: 12px; border: 2px solid #ddd; background: #f9f9f9; font-family: inherit; }
.input-group input:focus, .input-group select:focus, .input-group textarea:focus { border-color: var(--safety-orange); outline: none; }
.submit-btn { width: 100%; padding: 15px; background: var(--structure-blue); color: var(--white); font-weight: 800; border: none; cursor: pointer; text-transform: uppercase; transition: 0.3s; }
.submit-btn:hover { background: var(--safety-orange); }

/* Partners */
.partner-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.partner-card { background: var(--white); padding: 40px; border-top: 5px solid var(--safety-orange); box-shadow: 0 5px 10px rgba(0,0,0,0.05); }
.p-header { font-family: var(--font-mono); font-weight: bold; color: #999; margin-bottom: 15px; font-size: 0.8rem; }
.partner-card p { font-style: italic; margin-bottom: 20px; color: #444; }
.client { font-weight: 700; color: var(--structure-blue); }

/* Legal */
.legal-doc { max-width: 800px; margin: 0 auto; background: var(--white); padding: 60px; border: 1px solid #ddd; }
.legal-doc h1 { font-weight: 800; color: var(--structure-blue); }
.legal-doc h3 { color: var(--safety-orange); margin-top: 30px; margin-bottom: 10px; }

/* Footer */
.construct-footer { background: var(--structure-blue); color: var(--white); padding: 60px 0 20px; margin-top: auto; border-top: 5px solid var(--safety-orange); }
.footer-content { display: flex; justify-content: space-between; align-items: flex-end; padding-bottom: 40px; }
.f-brand h4 { font-size: 1.5rem; font-weight: 800; margin-bottom: 5px; }
.copyright { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; text-align: center; width: 100%; font-size: 0.8rem; color: #ccc; }

@media (max-width: 900px) {
    .construct-nav { display: none; }
    .mobile-toggle { display: block; }
    .hero-content h1 { font-size: 2.5rem; }
    .project-grid, .about-grid, .partner-grid, .form-row { grid-template-columns: 1fr; flex-direction: column; }
    .footer-content { flex-direction: column; text-align: center; align-items: center; gap: 20px; }
}