/* =========================================
   VARIABLES & RESET
   ========================================= */
:root {
    --primary: #f97316; /* Vibrant Orange for Welding Spark */
    --primary-dark: #c2410c;
    --accent: #3b82f6; /* Tech Blue */
    --dark: #0f172a;
    --darker: #020617;
    --light: #f8fafc;
    --gray: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --font-main: 'Inter', sans-serif;
    --font-display: 'Space Grotesk', 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;
}

body {
    font-family: var(--font-main);
    background-color: var(--darker);
    color: var(--light);
    line-height: 1.7;
    overflow-x: hidden;
}

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;
}

/* =========================================
   UTILITIES & ANIMATIONS
   ========================================= */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
}

.btn-glow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-radius: 50px;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 0 20px rgba(249, 115, 22, 0.4);
    transition: var(--transition);
}

.btn-glow:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(249, 115, 22, 0.6);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    padding: 12px 28px;
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-weight: 600;
    backdrop-filter: blur(5px);
    transition: var(--transition);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--light);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: 15px;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header p {
    color: var(--gray);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* =========================================
   NAVIGATION
   ========================================= */
.glass-nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

.glass-nav.scrolled {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--glass-border);
    padding: 10px 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i { color: var(--primary); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a:not(.nav-cta) {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray);
}

.nav-links a:not(.nav-cta):hover { color: var(--light); }

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--light);
    font-size: 1.5rem;
    cursor: pointer;
}

/* =========================================
   HERO SECTION
   ========================================= */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg-shapes .shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: -1;
    animation: float 10s infinite ease-in-out;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: var(--primary);
    opacity: 0.15;
    top: -100px;
    right: -100px;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    opacity: 0.1;
    bottom: -50px;
    left: -100px;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
}

.hero-content {
    max-width: 800px;
}

.badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(249, 115, 22, 0.1);
    border: 1px solid rgba(249, 115, 22, 0.3);
    border-radius: 50px;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 25px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-section h1 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    margin-bottom: 25px;
    font-weight: 700;
}

.hero-text {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-btns {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.trust-indicators {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--gray);
}

.trust-item i { color: var(--primary); }

/* Animation Delays */
.animate-fade-up { animation: fadeUp 0.8s forwards; opacity: 0; transform: translateY(20px); }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

@keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
}

/* =========================================
   STATS SECTION
   ========================================= */
.stats-section { padding: 60px 0; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-card {
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover { transform: translateY(-5px); border-color: var(--primary); }

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--light);
    display: inline;
}

.stat-suffix {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--primary);
    display: inline;
}

.stat-label {
    color: var(--gray);
    margin-top: 10px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* =========================================
   SERVICES SECTION
   ========================================= */
.services-section { padding: 100px 0; }

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.service-card {
    padding: 40px 30px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 3px;
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.service-card:hover { transform: translateY(-10px); }
.service-card:hover::before { transform: scaleX(1); }

.icon-box {
    width: 60px;
    height: 60px;
    background: rgba(249, 115, 22, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 25px;
}

.service-card h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.feature-list li {
    font-size: 0.85rem;
    color: var(--light);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.feature-list li::before {
    content: '✓';
    color: var(--primary);
    font-weight: bold;
}

/* =========================================
   PROCESS TIMELINE
   ========================================= */
.process-section { padding: 100px 0; background: rgba(255,255,255,0.02); }

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--glass-border);
}

.timeline-item {
    position: relative;
    padding-left: 70px;
    margin-bottom: 40px;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: 42px;
    height: 42px;
    background: var(--darker);
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--primary);
    z-index: 2;
}

.timeline-content { padding: 25px; }
.timeline-content h3 { font-family: var(--font-display); margin-bottom: 10px; }
.timeline-content p { color: var(--gray); font-size: 0.95rem; }

/* =========================================
   ARTICLE SECTION
   ========================================= */
.article-section { padding: 100px 0; }

.article-container { max-width: 800px; }

.article-section h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    margin: 50px 0 20px;
    color: var(--light);
}

.article-section h3 {
    font-size: 1.3rem;
    margin: 30px 0 15px;
    color: var(--light);
}

.content-block p {
    color: var(--gray);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.content-block a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.callout-box {
    padding: 25px;
    border-radius: 12px;
    margin: 30px 0;
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.tip-box {
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--accent);
}

.callout-box i { font-size: 1.5rem; color: var(--accent); margin-top: 3px; }

.comparison-table-wrapper { overflow-x: auto; margin: 30px 0; }

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 500px;
}

.comparison-table th, .comparison-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

.comparison-table th {
    color: var(--primary);
    font-weight: 600;
}

.comparison-table td { color: var(--gray); }

/* =========================================
   FAQ SECTION
   ========================================= */
.faq-section { padding: 100px 0; }

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 20px;
}

.faq-item {
    padding: 0;
    overflow: hidden;
}

.faq-item summary {
    padding: 20px 25px;
    cursor: pointer;
    font-weight: 600;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary);
    transition: var(--transition);
}

.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] summary { color: var(--primary); }

.faq-item p {
    padding: 0 25px 20px;
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* =========================================
   TESTIMONIALS
   ========================================= */
.testimonials-section { padding: 100px 0; background: rgba(255,255,255,0.02); }

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.testimonial-card { padding: 35px; }

.stars { color: #fbbf24; margin-bottom: 15px; font-size: 0.9rem; display: flex; gap: 3px; }

.testimonial-card > p {
    color: var(--light);
    font-style: italic;
    margin-bottom: 25px;
    font-size: 1rem;
}

.client-info { display: flex; align-items: center; gap: 15px; }

.initials {
    width: 45px;
    height: 45px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.client-info strong { display: block; font-size: 0.95rem; }
.client-info span { font-size: 0.8rem; color: var(--gray); }

/* =========================================
   CONTACT SECTION
   ========================================= */
.contact-section { padding: 100px 0; }

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.contact-info > p { color: var(--gray); margin-bottom: 40px; }

.info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    align-items: flex-start;
}

.info-item i {
    width: 40px;
    height: 40px;
    background: rgba(249, 115, 22, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
}

.info-item strong { display: block; margin-bottom: 3px; }
.info-item a, .info-item span { color: var(--gray); font-size: 0.95rem; }
.info-item a:hover { color: var(--primary); }

.map-btn { margin-top: 30px; }

.contact-form { padding: 40px; }
.contact-form h3 { font-family: var(--font-display); font-size: 1.5rem; margin-bottom: 25px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 0.9rem; color: var(--gray); }

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--light);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255,255,255,0.08);
}

.submit-btn { width: 100%; justify-content: center; border: none; cursor: pointer; font-size: 1rem; }

/* =========================================
   FOOTER
   ========================================= */
.site-footer {
    background: var(--dark);
    border-top: 1px solid var(--glass-border);
    padding-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 60px;
}

.brand-col p { color: var(--gray); margin: 20px 0; font-size: 0.95rem; }

.social-icons { display: flex; gap: 12px; }
.social-icons a {
    width: 40px; height: 40px;
    background: rgba(255,255,255,0.05);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.social-icons a:hover { background: var(--primary); color: white; }

.footer-col h4 {
    font-family: var(--font-display);
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { color: var(--gray); font-size: 0.9rem; }
.footer-col ul a:hover { color: var(--primary); padding-left: 5px; }

.contact-list li {
    display: flex; align-items: center; gap: 10px;
    color: var(--gray); font-size: 0.9rem; margin-bottom: 12px;
}
.contact-list i { color: var(--primary); width: 16px; }

.copyright {
    border-top: 1px solid var(--glass-border);
    padding: 25px 0;
    text-align: center;
}
.copyright p { color: var(--gray); font-size: 0.85rem; }

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

@media (max-width: 768px) {
    .mobile-toggle { display: block; }
    
    .nav-links {
        position: fixed;
        top: 0; right: -100%;
        width: 80%; max-width: 350px;
        height: 100vh;
        background: var(--dark);
        flex-direction: column;
        justify-content: center;
        padding: 40px;
        transition: var(--transition);
        border-left: 1px solid var(--glass-border);
        z-index: 1001;
    }
    
    .nav-links.active { right: 0; }
    
    .hero-section h1 { font-size: 2.2rem; }
    .section-header h2 { font-size: 2rem; }
    .faq-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    
    .timeline::before { left: 15px; }
    .timeline-item { padding-left: 55px; }
    .timeline-marker { width: 32px; height: 32px; font-size: 0.8rem; }
}

@media (max-width: 480px) {
    .hero-btns { flex-direction: column; }
    .hero-btns a { width: 100%; justify-content: center; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .services-grid { grid-template-columns: 1fr; }
}