/* 
  MLB Welding - Modern Style Sheet
  Designed with purely vanilla CSS 
*/

:root {
  /* Colors */
  --bg-core: #0a0a0c;
  --bg-surface: #141416;
  --bg-surface-elevated: #1e1e22;
  --bg-surface-glass: rgba(20, 20, 22, 0.75);
  
  --text-main: #fcfcfd;
  --text-muted: #a1a1aa;
  
  --accent-primary: #ff7b00;
  --accent-secondary: #ffb700;
  --accent-gradient: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  --accent-glow: rgba(255, 123, 0, 0.25);
  
  --border-color: rgba(255, 255, 255, 0.08);

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Sizes & Spacing */
  --header-height: 80px;
  --section-padding: 100px 0;
  --border-radius: 12px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  background-color: var(--bg-core);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul {
  list-style: none;
}

/* Typography Styles */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.section-title span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

.mb-5 { margin-bottom: 3rem; }
.mt-4 { margin-top: 2rem; }
.text-center { text-align: center; }

/* Layout Containers */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.z-relative {
  position: relative;
  z-index: 10;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #000;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--text-muted);
}

.btn-lg {
  padding: 0.875rem 2.25rem;
  font-size: 1.125rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.logo a {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
}

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

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

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-main);
}

.header-phone i {
  width: 18px;
  height: 18px;
  color: var(--accent-primary);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-core);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.mobile-nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  text-align: center;
}

.mobile-nav-link {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 600;
}

.mobile-nav-link.phone-link {
  color: var(--accent-primary);
  margin-top: 1rem;
}

.mobile-menu-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 0.5rem;
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('assets/images/welding_hero_bg.png');
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(10, 10, 12, 0.95) 0%, rgba(10, 10, 12, 0.6) 100%);
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 900px;
  padding: 0 1.5rem;
}

.hero-badge {
  display: inline-block;
  padding: 0.25rem 1rem;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  font-size: 0.875rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 2rem;
  backdrop-filter: blur(4px);
}

.hero-title {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: #d1d1d6;
  max-width: 700px;
  margin: 0 auto 3rem;
  font-weight: 300;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

.mouse {
  width: 26px;
  height: 40px;
  border: 2px solid var(--text-muted);
  border-radius: 13px;
  display: block;
  position: relative;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll 1.5s infinite;
}

@keyframes scroll {
  0% { transform: translate(-50%, 0); opacity: 1; }
  100% { transform: translate(-50%, 15px); opacity: 0; }
}

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

.grids-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.body-text {
  color: var(--text-muted);
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
}

.about-highlight {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--bg-surface);
  border-left: 4px solid var(--accent-primary);
  border-radius: 0 8px 8px 0;
}

.about-highlight i {
  color: var(--accent-primary);
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.about-highlight p {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0;
}

.image-wrapper {
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
}

.image-wrapper img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  z-index: 2;
  position: relative;
}

.image-accent {
  position: absolute;
  top: 20px;
  left: 20px;
  right: -20px;
  bottom: -20px;
  border: 1px solid var(--accent-primary);
  border-radius: var(--border-radius);
  z-index: 1;
}

/* Features Section */
.features-section {
  padding: 50px 0 100px;
}

.container-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2.5rem 2rem;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-10px);
  border-color: rgba(255, 123, 0, 0.4);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: rgba(255, 123, 0, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--accent-primary);
}

.feature-icon i {
  width: 28px;
  height: 28px;
}

.feature-card h3 {
  font-size: 1.375rem;
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Services Section */
.services-section {
  padding: var(--section-padding);
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.service-item {
  background: var(--bg-surface-elevated);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0%;
  background: var(--accent-gradient);
  transition: height var(--transition-normal);
}

.service-item:hover {
  background: var(--bg-surface);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.service-item:hover::before {
  height: 100%;
}

.service-icon {
  width: 32px;
  height: 32px;
  color: var(--accent-primary);
  margin-bottom: 1.5rem;
}

.service-item h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.service-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: auto;
}

/* CTA Section */
.cta-section {
  padding: 120px 0;
  position: relative;
  background-image: url('assets/images/modern_shop.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.cta-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 12, 0.85);
}

.cta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.cta-subtitle {
  font-size: 1.25rem;
  color: var(--accent-primary);
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* Footer Section */
.site-footer {
  background: var(--bg-core);
  padding: 80px 0 30px;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.footer-desc {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  max-width: 400px;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  color: var(--text-main);
}

.social-links a:hover {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #000;
}

.footer-col h4 {
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--accent-primary);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-nav a {
  color: var(--text-muted);
}

.footer-nav a:hover {
  color: var(--accent-primary);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-info li {
  display: flex;
  gap: 1rem;
  color: var(--text-muted);
}

.contact-info i {
  color: var(--accent-primary);
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Animations */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.slide-in-left.visible, .slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Responsive adjustments */
@media (max-width: 1024px) {
  .grids-2 {
    gap: 2rem;
  }
  .container-features {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .main-nav, .header-phone, .header-actions .btn {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }

  .hero-title {
    font-size: 2.5rem;
  }
  
  .grids-2 {
    grid-template-columns: 1fr;
  }

  .image-accent {
    display: none;
  }

  .container-features {
    grid-template-columns: 1fr;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}