/* ============================================
   UNIVERSAL ENERGY SYSTEMS
   Bold Industrial Theme
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500;600;700&family=Barlow:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  --bg-black: #0a0a0a;
  --bg-dark: #131313;
  --bg-card: #1a1a1a;
  --bg-elevated: #222222;
  --border: #2a2a2a;
  --border-light: #3a3a3a;
  --text-primary: #f5f5f5;
  --text-secondary: #a0a0a0;
  --text-muted: #6a6a6a;
  --accent: #ff6b00;
  --accent-hover: #ff8533;
  --accent-dim: #cc5500;
  --warning: #ffaa00;
  --success: #00cc66;
  
  --font-display: 'Oswald', sans-serif;
  --font-body: 'Barlow', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --container: 1280px;
  --header-h: 80px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

/* Background grid pattern */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 107, 0, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 107, 0, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  z-index: 0;
}

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

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.logo-mark {
  width: 44px;
  height: 44px;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  clip-path: polygon(15% 0, 100% 0, 85% 100%, 0 100%);
}

.logo-mark span {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  color: var(--bg-black);
  margin-left: -2px;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.logo-text-main {
  font-size: 18px;
  letter-spacing: 1px;
}

.logo-text-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--accent);
  letter-spacing: 2px;
  margin-top: 3px;
  font-weight: 400;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 10px 16px;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--accent);
}

.nav-cta {
  margin-left: 16px;
  background: var(--accent);
  color: var(--bg-black);
  padding: 12px 24px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  transition: background 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
}

.nav-cta:hover {
  background: var(--accent-hover);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--border-light);
  cursor: pointer;
  position: relative;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  transition: all 0.3s ease;
}

.menu-toggle span:nth-child(1) { top: 14px; }
.menu-toggle span:nth-child(2) { top: 19px; }
.menu-toggle span:nth-child(3) { top: 24px; }

.menu-toggle.active span:nth-child(1) {
  transform: translateX(-50%) rotate(45deg);
  top: 19px;
}
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) {
  transform: translateX(-50%) rotate(-45deg);
  top: 19px;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
  position: relative;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-black);
  clip-path: polygon(6% 0, 100% 0, 94% 100%, 0 100%);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateX(4px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-light);
  padding: 14px 30px;
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-arrow::after {
  content: '→';
  font-size: 18px;
  transition: transform 0.2s ease;
}

.btn:hover .btn-arrow::after {
  transform: translateX(4px);
}

/* ============================================
   PAGE HERO (interior pages)
   ============================================ */
.page-hero {
  padding: calc(var(--header-h) + 80px) 0 80px;
  border-bottom: 1px solid var(--border);
  position: relative;
  background: 
    radial-gradient(circle at 20% 50%, rgba(255, 107, 0, 0.08) 0%, transparent 50%),
    var(--bg-dark);
}

.page-hero-inner {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.page-hero-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-hero-label::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--accent);
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 700;
  line-height: 0.95;
  text-transform: uppercase;
  letter-spacing: -1px;
}

.page-hero h1 .accent {
  color: var(--accent);
}

.page-hero p {
  max-width: 480px;
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.7;
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 32px;
}

.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 12px; color: var(--accent); }

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: 100px 0;
  position: relative;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--accent);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: -1px;
  margin-bottom: 24px;
  max-width: 800px;
}

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

.section-intro {
  color: var(--text-secondary);
  font-size: 17px;
  max-width: 640px;
  margin-bottom: 64px;
  line-height: 1.7;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 40px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

.section-header .section-intro {
  margin-bottom: 0;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  padding: 80px 0 32px;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

.footer-brand .logo {
  margin-bottom: 24px;
}

.footer-about {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 12px;
}

.footer-col a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

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

.footer-contact-item {
  display: flex;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
  align-items: flex-start;
}

.footer-contact-item .icon {
  color: var(--accent);
  font-size: 16px;
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-light);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 14px;
  transition: all 0.2s ease;
}

.footer-social a:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(255, 107, 0, 0.05);
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 15px;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.8s ease forwards;
}

.fade-in-delay-1 { animation-delay: 0.1s; opacity: 0; }
.fade-in-delay-2 { animation-delay: 0.2s; opacity: 0; }
.fade-in-delay-3 { animation-delay: 0.3s; opacity: 0; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 968px) {
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 24px;
    gap: 8px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    align-items: stretch;
  }
  
  .nav.active {
    transform: translateX(0);
  }
  
  .nav-link {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
  }
  
  .nav-cta {
    margin-left: 0;
    margin-top: 12px;
    justify-content: center;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  
  .section {
    padding: 64px 0;
  }
  
  .page-hero {
    padding: calc(var(--header-h) + 48px) 0 48px;
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .container {
    padding: 0 20px;
  }
  
  .btn {
    padding: 14px 24px;
    font-size: 13px;
  }
}