/* =========================================
   CSS VARIABLES & RESET
   ========================================= */
:root {
    --primary: #f97316; /* Vibrant Orange for Welding/Fire theme */
    --primary-dark: #ea580c;
    --secondary: #0f172a; /* Deep Navy */
    --accent: #38bdf8; /* Cyan Glow */
    --bg-dark: #020617;
    --bg-card: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow-glow: 0 0 20px rgba(249, 115, 22, 0.3);
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.7;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(249, 115, 22, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(56, 189, 248, 0.06) 0%, transparent 40%);
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section-padding { padding: 100px 0; position: relative; }

/* Typography */
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 700; line-height: 1.2; color: #fff; }
h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; margin-bottom: 1.5rem; }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
p { color: var(--text-muted); margin-bottom: 1.5rem; font-size: 1.05rem; }

/* Glassmorphism Utility */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition);
}
.glass-card:hover {
    transform: translateY(-5px);
    border-color: rgba(249, 115, 22, 0.3);
    box-shadow: 0 10px 40px -10px rgba(0,0,0,0.5);
}

/* Buttons */
.btn-glow {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white; font-weight: 600; border-radius: 50px;
    box-shadow: var(--shadow-glow);
    font-family: var(--font-heading);
    text-transform: uppercase; letter-spacing: 0.5px; font-size: 0.9rem;
}
.btn-glow:hover { transform: translateY(-2px); box-shadow: 0 0 30px rgba(249, 115, 22, 0.5); }
.btn-outline {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 14px 32px; border: 1px solid var(--glass-border);
    color: white; border-radius: 50px; font-weight: 600;
    font-family: var(--font-heading); text-transform: uppercase; letter-spacing: 0.5px; font-size: 0.9rem;
}
.btn-outline:hover { background: rgba(255,255,255,0.05); border-color: white; }
.full-width { width: 100%; }

/* =========================================
   NAVIGATION
   ========================================= */
.glass-nav {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    padding: 20px 0; transition: var(--transition);
}
.glass-nav.scrolled {
    padding: 12px 0;
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 800; color: white; display: flex; align-items: center; gap: 10px; }
.logo i { color: var(--primary); }
.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 0.95rem; font-weight: 500; opacity: 0.8; }
.nav-links a:hover { opacity: 1; color: var(--primary); }
.mobile-toggle { display: none; background: none; border: none; color: white; font-size: 1.5rem; cursor: pointer; }

/* =========================================
   HERO SECTION
   ========================================= */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    position: relative; overflow: hidden; padding-top: 80px;
}
.floating-shape {
    position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.4; animation: float 10s infinite ease-in-out;
}
.shape-1 { width: 400px; height: 400px; background: var(--primary); top: -100px; right: -100px; }
.shape-2 { width: 300px; height: 300px; background: var(--accent); bottom: 10%; left: -50px; animation-delay: -5s; }
@keyframes float { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(30px, -30px); } }

.hero-content { position: relative; z-index: 2; max-width: 800px; }
.badge {
    display: inline-block; padding: 8px 16px; border-radius: 50px;
    background: rgba(249, 115, 22, 0.15); border: 1px solid rgba(249, 115, 22, 0.3);
    color: var(--primary); font-size: 0.85rem; font-weight: 600; margin-bottom: 20px;
    text-transform: uppercase; letter-spacing: 1px;
}
.animate-pulse { animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.7; } }

.hero-subtitle { font-size: 1.25rem; max-width: 600px; margin-bottom: 2.5rem; }
.hero-actions { display: flex; gap: 15px; flex-wrap: wrap; margin-bottom: 3rem; }
.trust-indicators { display: flex; gap: 30px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 10px; font-size: 0.9rem; font-weight: 500; opacity: 0.9; }
.trust-item i { color: var(--primary); }

/* =========================================
   SERVICES GRID
   ========================================= */
.section-header { text-align: center; max-width: 700px; margin: 0 auto 60px; }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.service-card .icon-box {
    width: 60px; height: 60px; border-radius: 12px;
    background: rgba(249, 115, 22, 0.1); display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; color: var(--primary); margin-bottom: 20px;
}
.service-card h3 { color: white; }
.service-card p { font-size: 0.95rem; margin-bottom: 0; }

/* =========================================
   STATISTICS
   ========================================= */
.stats-section { padding: 60px 0; background: rgba(255,255,255,0.01); border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 30px; }
.stat-card { text-align: center; padding: 30px 20px; }
.stat-card .counter { font-size: 3rem; font-weight: 800; color: var(--primary); font-family: var(--font-heading); display: inline; }
.stat-card p { margin-top: 10px; margin-bottom: 0; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; font-size: 0.85rem; }

/* =========================================
   TIMELINE
   ========================================= */
.timeline { position: relative; max-width: 800px; margin: 0 auto; padding-left: 40px; border-left: 2px solid var(--border-color); }
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
    position: absolute; left: -51px; top: 20px; width: 20px; height: 20px;
    background: var(--primary); border-radius: 50%; border: 4px solid var(--bg-dark);
}
.timeline-content h3 { color: var(--primary); margin-bottom: 5px; }
.timeline-content p { margin-bottom: 0; font-size: 0.95rem; }

/* =========================================
   ARTICLE SECTION
   ========================================= */
.article-container { max-width: 850px; margin: 0 auto; }
.article-section h2 { margin-top: 3rem; margin-bottom: 1.5rem; font-size: 2rem; color: white; }
.article-section h3 { margin-top: 2rem; margin-bottom: 1rem; font-size: 1.4rem; color: var(--accent); }
.article-section p { font-size: 1.1rem; line-height: 1.8; color: #cbd5e1; }
.article-section strong { color: white; font-weight: 600; }

.callout-box, .warning-box {
    display: flex; gap: 15px; padding: 20px; border-radius: 12px; margin: 2rem 0;
    background: rgba(56, 189, 248, 0.08); border-left: 4px solid var(--accent);
}
.warning-box { background: rgba(239, 68, 68, 0.08); border-left-color: #ef4444; }
.callout-box i, .warning-box i { font-size: 1.5rem; margin-top: 3px; }
.callout-box i { color: var(--accent); }
.warning-box i { color: #ef4444; }
.callout-box div, .warning-box div { flex: 1; }
.callout-box p, .warning-box p { margin-bottom: 0; font-size: 1rem; }

.comparison-table-wrapper { overflow-x: auto; margin: 2rem 0; border-radius: 12px; border: 1px solid var(--border-color); }
.comparison-table { width: 100%; border-collapse: collapse; min-width: 600px; }
.comparison-table th, .comparison-table td { padding: 15px 20px; text-align: left; border-bottom: 1px solid var(--border-color); }
.comparison-table th { background: rgba(255,255,255,0.05); color: white; font-weight: 600; text-transform: uppercase; font-size: 0.8rem; letter-spacing: 1px; }
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table tr:hover td { background: rgba(255,255,255,0.02); }

/* =========================================
   FAQ SECTION
   ========================================= */
.faq-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(500px, 1fr)); gap: 20px; }
.faq-item { padding: 0; overflow: hidden; }
.faq-item summary {
    padding: 20px 25px; cursor: pointer; font-weight: 600; font-size: 1.05rem;
    list-style: none; display: flex; justify-content: space-between; align-items: center;
    color: white; transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.5rem; color: var(--primary); font-weight: 300; transition: var(--transition); }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] summary { background: rgba(249, 115, 22, 0.05); color: var(--primary); }
.faq-item p { padding: 0 25px 20px; margin-bottom: 0; font-size: 0.95rem; line-height: 1.7; }

/* =========================================
   TESTIMONIALS
   ========================================= */
.testimonial-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.testimonial-card { display: flex; flex-direction: column; gap: 15px; }
.stars { color: #fbbf24; font-size: 0.9rem; display: flex; gap: 3px; }
.testimonial-card > p { font-style: italic; font-size: 1rem; flex-grow: 1; margin-bottom: 0; }
.reviewer { display: flex; align-items: center; gap: 12px; margin-top: 10px; }
.avatar {
    width: 45px; height: 45px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.85rem; color: white;
}
.reviewer strong { display: block; color: white; font-size: 0.95rem; }
.reviewer span { font-size: 0.8rem; color: var(--text-muted); }

/* =========================================
   CONTACT SECTION
   ========================================= */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-info h2 { margin-bottom: 1rem; }
.contact-info > p { margin-bottom: 2rem; }
.info-item { display: flex; align-items: flex-start; gap: 15px; margin-bottom: 20px; }
.info-item i { color: var(--primary); font-size: 1.2rem; margin-top: 4px; width: 24px; text-align: center; }
.info-item a:hover { color: var(--primary); }
.info-item address { font-style: normal; }

.contact-form h3 { margin-bottom: 1.5rem; color: white; }
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; margin-bottom: 6px; font-size: 0.85rem; font-weight: 500; color: var(--text-muted); }
.form-group input, .form-group textarea {
    width: 100%; padding: 12px 16px; border-radius: 10px; border: 1px solid var(--border-color);
    background: rgba(255,255,255,0.03); color: white; font-family: var(--font-body); font-size: 1rem;
    transition: var(--transition); outline: none;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--primary); background: rgba(249, 115, 22, 0.03); }
.form-group textarea { resize: vertical; min-height: 100px; }

/* =========================================
   FOOTER
   ========================================= */
.site-footer { background: #01040f; border-top: 1px solid var(--border-color); padding-top: 80px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; padding-bottom: 60px; }
.brand-col p { margin-top: 15px; font-size: 0.9rem; max-width: 300px; }
.footer-col h4 { color: white; margin-bottom: 20px; font-size: 1rem; text-transform: uppercase; letter-spacing: 1px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 0.9rem; color: var(--text-muted); }
.footer-col ul a:hover { color: var(--primary); padding-left: 5px; }
.footer-col p { font-size: 0.9rem; margin-bottom: 8px; }
.social-icons { display: flex; gap: 12px; margin-top: 15px; }
.social-icons a {
    width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border-color);
    display: flex; align-items: center; justify-content: center; font-size: 0.85rem;
}
.social-icons a:hover { background: var(--primary); border-color: var(--primary); color: white; }
.footer-bottom { border-top: 1px solid var(--border-color); padding: 25px 0; text-align: center; }
.footer-bottom p { font-size: 0.8rem; margin-bottom: 0; opacity: 0.6; }

/* =========================================
   RESPONSIVE DESIGN
   ========================================= */
@media (max-width: 992px) {
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-cta { display: none; }
    .mobile-toggle { display: block; }
    
    .nav-links.active {
        display: flex; flex-direction: column; position: absolute;
        top: 100%; left: 0; width: 100%; background: rgba(2, 6, 23, 0.98);
        backdrop-filter: blur(20px); padding: 20px; gap: 15px;
        border-bottom: 1px solid var(--border-color);
    }
    
    .hero { min-height: auto; padding: 140px 0 80px; }
    h1 { font-size: 2.2rem; }
    .hero-actions { flex-direction: column; }
    .hero-actions a { width: 100%; text-align: center; }
    
    .faq-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .section-padding { padding: 60px 0; }
    .timeline { padding-left: 30px; }
    .timeline-dot { left: -41px; }
}

/* Scroll Reveal Animation Classes */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }