/* Global Variables */
:root {
  /* Brand Colors */
  --tes-blue: #0056b3;
  --tes-green: #28a745;
  --tes-purple: #4b3a94;
  --tes-wholesale-blue: #013ef8;
  --tes-wholesale-yellow: #fdcd07;

  /* Neutral Colors */
  --dark: #343a40;
  --medium: #6c757d;
  --light: #f8f9fa;
  --white: #ffffff;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* Box Shadow */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
}

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

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

body {
  font-family: "Roboto", sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background-color: var(--white);
}

a {
  text-decoration: none;
  color: var(--tes-blue);
  transition: color 0.3s ease;
}

a:hover {
  color: var(--tes-purple);
}

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

section {
  padding: var(--spacing-xl) 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

h1 {
  font-size: 3.5rem;
  font-weight: 700;
}

h2 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: var(--medium);
  margin-top: -1.5rem;
  margin-bottom: var(--spacing-lg);
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: background-color 0.3s ease, color 0.3s ease;
  border: none;
}

.btn-primary {
  background-color: var(--tes-blue);
  color: var(--white);
}

.btn-primary:hover {
  background-color: #004494;
  color: var(--white);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.2);
  color: var(--white);
  border: 1px solid var(--white);
}

.btn-secondary:hover {
  background-color: var(--white);
  color: var(--tes-blue);
}

.btn-outline {
  background-color: transparent;
  color: var(--tes-blue);
  border: 1px solid var(--tes-blue);
  padding: 0.5rem 1.25rem;
  font-size: 0.9rem;
}

.btn-outline:hover {
  background-color: var(--tes-blue);
  color: var(--white);
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.4s ease;
  background-color: transparent;
}

header.scrolled {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
}

.navbar {
  padding: var(--spacing-sm) 0;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0;
}

.logo {
  margin: 0;
}

.logo img {
  height: 80px;
  filter: brightness(0) invert(1);
  transition: filter 0.4s ease;
  display: block;
}

header.scrolled .logo img {
  filter: none;
}

.nav-links ul {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-links a {
  color: var(--white);
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  position: relative;
  transition: color 0.4s ease;
}

header.scrolled .nav-links a {
  color: var(--dark);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
}

header.scrolled .nav-links a:hover,
header.scrolled .nav-links a.active {
  color: var(--tes-blue);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--white);
  transition: width 0.3s ease;
}

header.scrolled .nav-links a::after {
  background-color: var(--tes-blue);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  cursor: pointer;
}

.bar {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px auto;
  background-color: var(--white);
  transition: all 0.3s ease;
}

header.scrolled .bar {
  background-color: var(--dark);
}

/* Hero Section */
.hero {
  background: linear-gradient(rgba(0, 86, 179, 0.85), rgba(75, 58, 148, 0.85)),
    url("assets/images/hero-bg.jpg");
  background-size: cover;
  background-position: center;
  color: var(--white);
  height: 100vh;
  display: flex;
  align-items: center;
  text-align: center;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("assets/images/engineering-drawing-overlay.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.5;
  mix-blend-mode: overlay;
  pointer-events: none;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  padding-top: 80px;
  position: relative;
  z-index: 1;
}

.hero h1 {
  margin-bottom: var(--spacing-lg);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  line-height: 1.1;
}

.hero p {
  font-size: 1.4rem;
  margin-bottom: var(--spacing-xl);
  font-weight: 300;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
}

/* Primary Brands Section */
.primary-brands {
  padding: var(--spacing-xl) 0;
  background-color: var(--white);
}

.brand-showcase {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.brand-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-lg);
}

.brand-item:hover {
  transform: none;
}

.brand-logo {
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.brand-logo img {
  max-height: 100%;
}

.brand-content h3 {
  font-size: 1.8rem;
  margin-bottom: var(--spacing-md);
  color: var(--tes-blue);
}

.brand-motto {
  font-style: italic;
  color: var(--medium);
  margin: var(--spacing-md) 0;
}

.brand-content p {
  margin-bottom: var(--spacing-lg);
}

.brand-content .btn {
  margin-top: var(--spacing-sm);
}

/* Secondary Brands Section */
.secondary-brands {
  background-color: var(--light);
  padding: var(--spacing-xl) 0;
}

.secondary-brands-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.secondary-brand-item {
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.secondary-brand-item:hover {
  transform: none;
  box-shadow: var(--shadow-sm);
}

.secondary-brand-logo {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.secondary-brand-logo img {
  max-height: 100%;
}

/* Value Propositions */
.value-props {
  background-color: var(--white);
  padding-top: calc(var(--spacing-xl) * 2);
  padding-bottom: calc(var(--spacing-xl) * 2);
}

.prop-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.prop-card {
  text-align: center;
}

.prop-card:hover {
  transform: none;
}

.prop-icon {
  font-size: 3rem;
  color: var(--tes-blue);
  margin-bottom: var(--spacing-md);
}

/* Global Presence Section */
.global-presence {
  background-color: var(--light);
  padding: calc(var(--spacing-xl) * 1.5) 0;
}

.locations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.location-card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.location-card:hover {
  transform: none;
  box-shadow: var(--shadow-md);
}

.location-card h3 {
  color: var(--tes-blue);
  margin-bottom: var(--spacing-sm);
  font-size: 1.2rem;
}

.partnership-cta {
  background: linear-gradient(to right, var(--tes-blue), var(--tes-purple));
  color: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-md);
  text-align: center;
  margin-top: var(--spacing-xl);
}

.partnership-cta h3 {
  color: var(--white);
  font-size: 1.8rem;
}

.partnership-cta .btn {
  background-color: var(--white);
  color: var(--tes-blue);
  margin-top: var(--spacing-md);
}

.partnership-cta .btn:hover {
  background-color: rgba(255, 255, 255, 0.9);
}

/* Certifications Section */
.certifications {
  text-align: center;
  padding: calc(var(--spacing-xl) * 1.5) 0;
}

.cert-logos {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
}

.cert-logo {
  text-align: center;
}

.cert-logo img {
  height: 80px;
  margin-bottom: var(--spacing-sm);
  opacity: 0.8;
}

.cert-logo:hover img {
  opacity: 0.8;
}

.cert-logo p {
  font-weight: 500;
}

/* Footer */
footer {
  background-color: var(--dark);
  color: var(--light);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-logo {
  margin-bottom: var(--spacing-lg);
}

.footer-logo img {
  height: 40px;
  margin-bottom: var(--spacing-md);
  filter: brightness(0) invert(1);
}

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

.footer-column h4 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
}

.footer-column ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-column a {
  color: var(--light);
}

.footer-column a:hover {
  color: var(--white);
  text-decoration: underline;
}

.social-media h4 {
  margin-bottom: var(--spacing-md);
}

.social-icons {
  display: flex;
  gap: var(--spacing-md);
}

.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: var(--white);
  transition: background-color 0.3s ease;
}

.social-icons a:hover {
  background-color: var(--tes-blue);
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
  color: var(--medium);
}

/* Responsive Styles */
@media (max-width: 992px) {
  h1 {
    font-size: 2.8rem;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
  }

  .footer-logo {
    grid-column: 1 / -1;
  }

  .brand-showcase,
  .secondary-brands-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .prop-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  header {
    position: absolute;
  }

  h1 {
    font-size: 2.2rem;
  }

  h2 {
    font-size: 1.8rem;
  }

  .hero {
    height: auto;
    padding: 130px 0 80px;
  }

  .hero p {
    font-size: 1.2rem;
  }

  .nav-links {
    position: fixed;
    left: -100%;
    top: 100px;
    flex-direction: column;
    background-color: var(--dark);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
  }

  header.scrolled .nav-links {
    background-color: var(--white);
  }

  .nav-links.active {
    left: 0;
  }

  .nav-links ul {
    flex-direction: column;
    padding: var(--spacing-lg) 0;
  }

  .hamburger {
    display: block;
    padding-right: var(--spacing-md);
  }

  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }

  .prop-cards {
    grid-template-columns: 1fr;
  }

  .about-hero {
    padding: 130px 0 3rem;
  }

  .tech-categories {
    grid-template-columns: 1fr;
  }

  .values-grid {
    grid-template-columns: 1fr;
  }

  body:not(.home-page) .nav-links,
  body:not(.home-page) .nav-links.active {
    background-color: var(--dark);
  }
  body:not(.home-page) .nav-links.active a {
    color: var(--white);
  }
  body:not(.home-page) .nav-links.active a:hover,
  body:not(.home-page) .nav-links.active a.active {
    color: var(--tes-wholesale-yellow);
  }
  body:not(.home-page) .nav-links.active a:hover::after,
  body:not(.home-page) .nav-links.active a.active::after {
    background-color: var(--tes-wholesale-yellow);
    width: 100%;
  }
}

@media (max-width: 576px) {
  .brand-showcase,
  .secondary-brands-grid,
  .locations-grid {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }

  .cert-logos {
    gap: var(--spacing-md);
  }
}

/* About Page Styles */
.about-hero {
  background: linear-gradient(rgba(0, 86, 179, 0.85), rgba(75, 58, 148, 0.85));
  position: relative;
  padding: 8rem 0 4rem;
  color: var(--white);
  text-align: center;
}

.about-hero-content {
  max-width: 800px;
  margin: 0 auto;
  z-index: 10;
  position: relative;
}

.about-hero h1 {
  margin-bottom: 1.5rem;
}

.about-hero p {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.company-story {
  padding: var(--spacing-xl) 0;
  background-color: var(--white);
}

.two-column-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.story-content {
  padding-right: var(--spacing-lg);
}

.story-content h2 {
  text-align: left;
  margin-bottom: var(--spacing-md);
}

.story-image,
.manufacturing-image {
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.story-image img,
.manufacturing-image img {
  display: block;
  width: 100%;
  height: auto;
}

.mission-values {
  background-color: var(--light);
  padding: var(--spacing-xl) 0;
}

.mission-statement {
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
  padding: var(--spacing-lg);
  background-color: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.mission-statement h3 {
  color: var(--tes-blue);
  margin-bottom: var(--spacing-md);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
}

.value-card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  height: 100%;
}

.value-icon {
  font-size: 2rem;
  color: var(--tes-blue);
  margin-bottom: var(--spacing-md);
}

.product-technologies {
  padding: var(--spacing-xl) 0;
}

.tech-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.tech-category {
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.tech-category h3 {
  color: var(--tes-blue);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--tes-blue);
}

.tech-list {
  list-style: none;
}

.tech-list li {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-md);
  position: relative;
}

.tech-list li:before {
  content: "•";
  color: var(--tes-blue);
  font-weight: bold;
  position: absolute;
  left: 0;
}

.tech-list li strong {
  color: var(--tes-purple);
}

.manufacturing {
  background-color: var(--light);
  padding: var(--spacing-xl) 0;
}

.manufacturing-content {
  padding-left: var(--spacing-lg);
}

.manufacturing-content p {
  margin-bottom: var(--spacing-md);
}

/* Responsive Styles for About Page */
@media (max-width: 992px) {
  .two-column-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .story-content,
  .manufacturing-content {
    padding: 0;
    order: 2;
  }

  .story-image,
  .manufacturing-image {
    order: 1;
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .about-hero {
    padding: 130px 0 3rem;
  }

  .tech-categories {
    grid-template-columns: 1fr;
  }

  .values-grid {
    grid-template-columns: 1fr;
  }
}

/* Add default background for non-home pages */
body:not(.home-page) header {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
}

body:not(.home-page) .logo img {
  filter: none;
}

body:not(.home-page) .nav-links a {
  color: var(--dark);
}

body:not(.home-page) .nav-links a:hover,
body:not(.home-page) .nav-links a.active {
  color: var(--tes-blue);
}

body:not(.home-page) .bar {
  background-color: var(--dark);
}