/* --- RESET & BASICS --- */
:root {
    --primary: #1f2937;  /* Dark Slate (Engineering feel) */
    --secondary: #4b5563; /* Lighter Grey */
    --accent: #f59e0b;    /* Safety/Welding Orange */
    --light: #f3f4f6;
    --white: #ffffff;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; line-height: 1.6; color: var(--primary); background: var(--white); }
.container { width: 90%; max-width: 1200px; margin: 0 auto; padding: 0 15px; }
a { text-decoration: none; transition: 0.3s; }
img { max-width: 100%; display: block; }

/* --- HEADER --- */
header { background: var(--white); box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
.nav-container { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; }
.logo { font-size: 1.5rem; font-weight: 800; color: var(--primary); letter-spacing: -1px; }
nav ul { display: flex; list-style: none; gap: 2rem; align-items: center; }
nav a { color: var(--secondary); font-weight: 500; font-size: 0.95rem; }
nav a:hover { color: var(--accent); }
.btn-nav { background: var(--primary); color: var(--white) !important; padding: 0.6rem 1.2rem; border-radius: 4px; }
.btn-nav:hover { background: var(--accent); }

/* --- HERO SECTION --- */
.hero { 
    background: linear-gradient(rgba(31, 41, 55, 0.8), rgba(31, 41, 55, 0.7)), url('Header.jpeg'); 
    background-size: cover;
    background-position: center;
    color: var(--white);
    padding: 100px 0;
    text-align: center;
}
.hero h1 { font-size: 3rem; line-height: 1.2; margin-bottom: 1rem; font-weight: 800; }
.hero p { font-size: 1.2rem; color: #d1d5db; max-width: 700px; margin: 0 auto 2rem; }
.hero-btns { display: flex; gap: 1rem; justify-content: center; }

/* Buttons */
.btn-main { background: var(--accent); color: var(--white); padding: 1rem 2rem; border-radius: 4px; font-weight: bold; }
.btn-main:hover { background: #d97706; transform: translateY(-2px); }
.btn-outline { border: 2px solid var(--white); color: var(--white); padding: 1rem 2rem; border-radius: 4px; font-weight: bold; }
.btn-outline:hover { background: var(--white); color: var(--primary); }

/* --- ABOUT SECTION --- */
.about { padding: 80px 0; background: var(--white); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-text h2 { font-size: 2.2rem; margin-bottom: 1rem; }
.feature-box { margin-top: 2rem; border-left: 4px solid var(--accent); padding-left: 1rem; }
.feature-box h3 { font-size: 1.2rem; margin-bottom: 0.5rem; color: var(--primary); }
.feature-box p { font-size: 0.95rem; color: var(--secondary); }
.about-image img { border-radius: 8px; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }

/* --- SERVICES --- */
.services { padding: 80px 0; background: var(--light); }
.section-header { text-align: center; margin-bottom: 3rem; max-width: 700px; margin-left: auto; margin-right: auto; }
.section-header h2 { font-size: 2.2rem; margin-bottom: 1rem; }
.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.card { background: var(--white); padding: 2.5rem; border-radius: 8px; transition: 0.3s; border: 1px solid #e5e7eb; }
.card:hover { transform: translateY(-5px); box-shadow: 0 10px 25px rgba(0,0,0,0.05); border-color: var(--accent); }
.icon { font-size: 2.5rem; margin-bottom: 1rem; }
.card h3 { font-size: 1.4rem; margin-bottom: 1rem; }
.card p { color: var(--secondary); font-size: 0.95rem; }

/* --- CONTACT --- */
.contact { padding: 80px 0; background: var(--primary); color: var(--white); }
.contact h2 { text-align: center; font-size: 2.2rem; margin-bottom: 3rem; }
.contact-wrapper { display: flex; flex-wrap: wrap; gap: 50px; justify-content: space-between; }
.contact-details { flex: 1; min-width: 300px; }
.detail-item { margin-bottom: 2rem; }
.detail-item h4 { color: var(--accent); margin-bottom: 0.5rem; font-size: 1.1rem; }

/* Form Styles */
.form-box { background: var(--white); padding: 2rem; border-radius: 8px; flex: 1; min-width: 300px; color: var(--primary); }
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 500; font-size: 0.9rem; }
input, select, textarea { width: 100%; padding: 0.8rem; border: 1px solid #d1d5db; border-radius: 4px; font-family: inherit; }
.full-width { width: 100%; border: none; cursor: pointer; font-size: 1rem; margin-top: 1rem; }

/* --- FOOTER --- */
footer { background: #111827; color: #9ca3af; padding: 2rem 0; text-align: center; font-size: 0.9rem; }

/* --- MOBILE RESPONSIVENESS --- */
@media (max-width: 768px) {
    .nav-container { flex-direction: column; gap: 1rem; }
    .about-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2rem; }
    .hero-btns { flex-direction: column; }
    .btn-main, .btn-outline { width: 100%; text-align: center; }
}