/* ============================================
   WELDING INSPECTION SERVICES - PROTOTYPE
   Industrial/Professional Theme
   ============================================ */

/* CSS Variables */
:root {
    /* Primary Colors - Deep Industrial Blue */
    --primary-900: #0c1929;
    --primary-800: #132337;
    --primary-700: #1a3049;
    --primary-600: #234560;
    --primary-500: #2d5a78;
    --primary-400: #4a7a9a;
    --primary-300: #6a9abd;
    --primary-200: #95b9d4;
    --primary-100: #c5d9eb;
    
    /* Accent Colors - Welding Orange/Amber */
    --accent-600: #d4690a;
    --accent-500: #f5800a;
    --accent-400: #ff9929;
    --accent-300: #ffb252;
    
    /* Steel Grays */
    --steel-900: #1a1a1a;
    --steel-800: #2d2d2d;
    --steel-700: #404040;
    --steel-600: #555555;
    --steel-500: #6b6b6b;
    --steel-400: #828282;
    --steel-300: #9e9e9e;
    --steel-200: #bbbbbb;
    --steel-100: #d8d8d8;
    --steel-50: #f2f2f2;
    
    /* Semantic Colors */
    --bg-primary: #0c1929;
    --bg-secondary: #132337;
    --bg-card: #1a3049;
    --bg-elevated: #234560;
    --text-primary: #ffffff;
    --text-secondary: #c5d9eb;
    --text-muted: #95b9d4;
    --border-color: rgba(197, 217, 235, 0.1);
    --border-accent: rgba(255, 153, 41, 0.3);
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 24px;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Roboto Slab', serif;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* Logo Styles */
.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.hero-logo {
    width: 180px;
    max-width: 80%;
    height: auto;
    object-fit: contain;
    margin-bottom: 24px;
}

.footer-logo {
    height: 44px;
    width: auto;
    object-fit: contain;
    margin-right: 12px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: #f5800a;
    color: #0c1929;
}

.btn-primary:hover {
    background: #d4690a;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--primary-400);
}

.btn-secondary:hover {
    background: var(--primary-700);
}

.btn-full {
    width: 100%;
}

/* Section Labels & Headers */
.section-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: #ff9929;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
}

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

.section-header .section-description {
    margin: 0 auto;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    padding: 20px 0;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(12, 25, 41, 0.95);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.5rem;
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-welding {
    color: #f5800a;
    text-shadow: 
        -1px -1px 0 #fff,
        1px -1px 0 #fff,
        -1px 1px 0 #fff,
        1px 1px 0 #fff;
}

.logo-services {
    color: #4a7a9a;
    text-shadow: 
        -1px -1px 0 #fff,
        1px -1px 0 #fff,
        -1px 1px 0 #fff,
        1px 1px 0 #fff;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-400);
    transition: width var(--transition-normal);
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    background: #f5800a;
    color: #0c1929;
    padding: 10px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.nav-cta:hover {
    background: #d4690a;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero-background {
    position: absolute;
    inset: 0;
    background: var(--primary-900);
}

.spark-overlay {
    position: absolute;
    inset: 0;
    background: transparent;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 153, 41, 0.1);
    border: 1px solid rgba(255, 153, 41, 0.3);
    padding: 8px 16px;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 500;
    color: #ff9929;
    margin-bottom: 24px;
}

.badge-icon {
    color: var(--accent-400);
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 20px;
}

.title-line {
    display: block;
}

.title-accent {
    color: var(--accent-400);
}

.hero-tagline {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    font-family: var(--font-display);
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    background: var(--border-color);
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .stat-divider {
        display: none;
    }
}

/* Services Section */
.services {
    padding: var(--section-padding);
    background: var(--bg-secondary);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to bottom, var(--bg-primary), transparent);
    pointer-events: none;
}

.services .container {
    position: relative;
    z-index: 1;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: #f5800a;
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.service-card:hover {
    border-color: var(--border-accent);
}

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

.service-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 20px;
    color: #ff9929;
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-title {
    font-size: 1.35rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.service-description {
    color: var(--text-muted);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.service-features li::before {
    content: '✓';
    color: #ff9929;
    font-weight: 700;
}

/* About Section */
.about {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

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

@media (max-width: 900px) {
    .about-content {
        grid-template-columns: 1fr;
    }
}

.about-info {
    padding-right: 40px;
}

.about-text {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 32px;
}

.certifications {
    margin-bottom: 32px;
}

.cert-title {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.cert-badge {
    background: #f5800a;
    color: #0c1929;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.85rem;
}

.cert-item span:last-child {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature {
    display: flex;
    gap: 16px;
}

.feature-icon {
    font-size: 1.5rem;
}

.feature-content h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.feature-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* About Visual */
.about-visual {
    position: sticky;
    top: 100px;
}

.visual-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
}

.visual-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.visual-stat {
    text-align: center;
}

.vstat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    font-family: var(--font-display);
    color: #ff9929;
    margin-bottom: 4px;
}

.vstat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.industries h4 {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.industry-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.tag:hover {
    border-color: #f5800a;
    color: #ff9929;
}

/* Contact Section */
.contact {
    padding: var(--section-padding);
    background: var(--bg-secondary);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, var(--bg-primary), transparent);
    pointer-events: none;
}

.contact .container {
    position: relative;
    z-index: 1;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
}

@media (max-width: 900px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #f5800a;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2395b9d4' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.btn svg {
    transition: transform var(--transition-fast);
}

.btn:hover svg {
    transform: translateX(4px);
}

/* Contact Info Cards */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.info-card h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.contact-item {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-icon {
    font-size: 1.25rem;
}

.contact-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.contact-item a {
    color: #ff9929;
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: #f5800a;
}

.contact-item span:last-child {
    color: var(--text-secondary);
}

.info-highlight {
    background: linear-gradient(135deg, var(--bg-elevated), var(--bg-card));
    border-color: var(--accent-500);
}

.info-highlight h3 {
    color: var(--accent-300);
}

.info-highlight p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

/* Footer */
.footer {
    background: var(--bg-primary);
    padding: 60px 24px 32px;
    border-top: 1px solid var(--border-color);
}

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

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-brand .logo-icon,
.footer-brand .logo-text {
    font-size: 2rem;
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 0.9rem;
    max-width: 280px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

@media (max-width: 600px) {
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

.footer-col h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-col a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: #ff9929;
}

.footer-col li:not(:has(a)) {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px 32px 32px;
        gap: 24px;
        transition: right var(--transition-normal);
        border-left: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* Scroll Animation Classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid #f5800a;
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: #f5800a;
    color: #0c1929;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-500);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-400);
}