/* Rush Aerospace - Industrial Precision Manufacturing */
/* Brand Colors:
   - Dark Steel: #0F1115
   - Bronze/Copper: #8B4513
   - Gold/Brass: #C9A961
   - Steel Gray: #4A5568
   - Off-White: #F7FAFC
*/

:root {
  --color-steel-dark: #0F1115;
  --color-steel-mid: #1A1D23;
  --color-steel-light: #2D3748;
  --color-bronze: #8B4513;
  --color-bronze-light: #A0522D;
  --color-gold: #C9A961;
  --color-gold-dim: #9C8B4D;
  --color-steel: #4A5568;
  --color-gray: #718096;
  --color-white: #F7FAFC;
  --color-white-dim: #CBD5E0;
  
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--color-steel-dark);
  color: var(--color-white-dim);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  margin-bottom: 1.5rem;
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  margin-bottom: 1rem;
  font-weight: 600;
}

p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-white-dim);
}

a {
  color: var(--color-white);
  text-decoration: none;
  transition: all 0.3s var(--transition-smooth);
}

/* Container */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 17, 21, 0.95);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(201, 169, 97, 0.15);
}

.navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-bronze), var(--color-gold));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: var(--color-white);
  font-size: 1.1rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 3rem;
}

.nav-menu a {
  color: var(--color-gray);
  font-weight: 500;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 0.3s var(--transition-smooth);
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width 0.3s var(--transition-smooth);
}

.nav-menu a:hover {
  color: var(--color-white);
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
  background: var(--color-steel-dark);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 80% 20%, rgba(139, 69, 19, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 20% 80%, rgba(201, 169, 97, 0.08) 0%, transparent 40%);
  pointer-events: none;
}

/* Technical grid overlay */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(201, 169, 97, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 169, 97, 0.03) 1px, transparent 1px);
  background-size: 100px 100px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-tag {
  display: inline-block;
  color: var(--color-gold);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 2rem;
  padding: 0.5rem 1rem;
  border: 1px solid rgba(201, 169, 97, 0.3);
  background: rgba(201, 169, 97, 0.05);
}

.hero h1 {
  margin-bottom: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero h1 .highlight {
  color: var(--color-gold);
}

.hero-description {
  font-size: 1.25rem;
  color: var(--color-white-dim);
  margin-bottom: 3rem;
  max-width: 650px;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.5rem;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: all 0.4s var(--transition-smooth);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--color-gold);
  color: var(--color-steel-dark);
}

.btn-primary:hover {
  background: var(--color-bronze);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(201, 169, 97, 0.4);
}

.btn-secondary:hover {
  background: rgba(201, 169, 97, 0.1);
  border-color: var(--color-gold);
}

/* Section Styling */
section {
  padding: 7rem 0;
  position: relative;
}

.section-header {
  max-width: 800px;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  color: var(--color-gold);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 1.5rem;
}

.section-title {
  margin-bottom: 1.5rem;
  font-weight: 700;
}

.section-description {
  font-size: 1.15rem;
  color: var(--color-white-dim);
  line-height: 1.7;
}

/* Capabilities Section */
.capabilities {
  background: var(--color-steel-mid);
  position: relative;
}

.capabilities::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 169, 97, 0.2), transparent);
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: rgba(255, 255, 255, 0.05);
}

.capability-card {
  background: var(--color-steel-mid);
  padding: 3.5rem 2.5rem;
  transition: all 0.5s var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.capability-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  transform: scaleX(0);
  transition: transform 0.5s var(--transition-smooth);
}

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

.capability-card:hover {
  background: var(--color-steel-light);
}

.capability-number {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-gold);
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.capability-card h3 {
  color: var(--color-white);
  margin-bottom: 1rem;
  font-size: 1.35rem;
}

.capability-card p {
  color: var(--color-gray);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
}

/* Industries Section */
.industries {
  background: var(--color-steel-dark);
  position: relative;
}

.industries-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.industry-visual {
  position: relative;
  min-height: 500px;
  overflow: hidden;
}

.industry-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.industry-content {
  padding: 4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--color-steel-mid);
}

.industry-item {
  padding: 1.75rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.industry-item:last-child {
  border-bottom: none;
}

.industry-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
}

.industry-item h3 {
  color: var(--color-white);
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}

.industry-item p {
  color: var(--color-gray);
  font-size: 0.95rem;
  margin: 0;
}

/* Quality Section */
.quality {
  background: var(--color-steel-mid);
  text-align: center;
  padding: 8rem 0;
}

.quality-content {
  max-width: 900px;
  margin: 0 auto;
}

.quality-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: rgba(255, 255, 255, 0.05);
  margin-top: 4rem;
}

.stat-item {
  background: var(--color-steel-mid);
  padding: 3rem 2rem;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-gold);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-gray);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Contact Section */
.contact {
  background: var(--color-steel-dark);
  text-align: center;
  padding: 8rem 0;
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201, 169, 97, 0.2), transparent);
}

.contact-content {
  max-width: 700px;
  margin: 0 auto;
}

.contact-content h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1.5rem;
}

.contact-content .section-description {
  margin-bottom: 3rem;
}

.contact-email-box {
  display: inline-block;
  padding: 1.25rem 2.5rem;
  border: 1px solid rgba(201, 169, 97, 0.2);
  background: rgba(201, 169, 97, 0.03);
  margin-top: 2rem;
  transition: all 0.3s var(--transition-smooth);
}

.contact-email-box:hover {
  border-color: var(--color-gold);
  background: rgba(201, 169, 97, 0.08);
}

.contact-email {
  font-size: 1.1rem;
  color: var(--color-white);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* Footer */
.footer {
  padding: 2.5rem 0;
  background: var(--color-steel-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-left {
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.9rem;
}

.footer-right {
  color: var(--color-gray);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .capabilities-grid {
    grid-template-columns: 1fr;
  }
  
  .industries-grid {
    grid-template-columns: 1fr;
  }
  
  .industry-visual {
    min-height: 350px;
    order: -1;
  }
  
  .industry-content {
    padding: 3rem;
  }
  
  .quality-stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hero {
    padding-top: 100px;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .quality-stats {
    grid-template-columns: 1fr;
  }
  
  .capability-card {
    padding: 2.5rem 1.5rem;
  }
  
  .industry-content {
    padding: 2rem;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* Subtle technical pattern */
.tech-pattern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.015;
  background-image: 
    repeating-linear-gradient(0deg, transparent, transparent 100px, rgba(201, 169, 97, 0.1) 100px, rgba(201, 169, 97, 0.1) 101px),
    repeating-linear-gradient(90deg, transparent, transparent 100px, rgba(201, 169, 97, 0.1) 100px, rgba(201, 169, 97, 0.1) 101px);
}