/* ==========================================================================
   Cool Engineering Solutions - Master Stylesheet
   ========================================================================== */

:root {
  --bg-dark: #0f1115;
  --bg-card: #16191e;
  --bg-card-hover: #1c2027;
  --primary-gold: #d4a341;
  --primary-gold-hover: #c29233;
  --text-light: #f4f5f6;
  --text-muted: #9aa0a6;
  --border-color: #272b33;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-light);
  font-family: var(--font-family);
  line-height: 1.6;
}

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

/* --- Layout & Utility --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border-color);
}

.text-gold {
  color: var(--primary-gold);
}

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

/* --- Navigation --- */
.navbar {
  background-color: var(--bg-dark);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 15px 0;
}

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

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: color 0.3s;
}

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

/* Ensure Request a Quote button text stays black when active */
.btn-primary.active,
.btn-primary.active:hover {
  color: #000000 !important;
  background-color: var(--primary-gold);
}

.btn-primary {
  background-color: var(--primary-gold);
  color: #000;
  padding: 10px 20px;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  border-radius: 2px;
  transition: background-color 0.3s;
  display: inline-block;
  border: none;
  cursor: pointer;
}

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

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 1.5rem;
  cursor: pointer;
}

/* --- Hero Section --- */
.hero {
  padding: 100px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero-title {
  font-size: 2.75rem;
  line-height: 1.2;
  font-weight: 800;
  margin-bottom: 15px;
}

.hero-subtitle {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-description {
  color: var(--text-muted);
  margin-bottom: 30px;
  font-size: 1rem;
}

.hero-image img {
  width: 100%;
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

/* --- Service Cards --- */
.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 2rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.service-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 40px;
  border-radius: 4px;
  position: relative;
  transition: transform 0.3s, border-color 0.3s;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-gold);
}

.service-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-gold);
  border: 1px solid var(--primary-gold);
  padding: 5px 12px;
  display: inline-block;
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.service-card .badge {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--primary-gold);
  letter-spacing: 1px;
  display: block;
  margin-bottom: 15px;
}

.service-list {
  list-style: none;
  margin-top: 20px;
}

.service-list li {
  margin-bottom: 10px;
  color: var(--text-muted);
  font-size: 0.95rem;
  position: relative;
  padding-left: 20px;
}

.service-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--primary-gold);
}

/* --- Detailed Grid (Services Page) --- */
.detailed-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.detail-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 20px;
  border-radius: 4px;
}

.detail-item h4 {
  color: var(--text-light);
  margin-bottom: 8px;
  font-size: 1rem;
}

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

/* --- Banner CTA --- */
.banner-cta {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 4px;
  margin: 60px 0;
}

.banner-text h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

/* --- Forms --- */
.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  background-color: var(--bg-card);
  padding: 40px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-group label {
  font-size: 0.85rem;
  margin-bottom: 8px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.form-group input,
.form-group select,
.form-group textarea {
  background-color: var(--bg-dark);
  border: 1px solid var(--border-color);
  color: var(--text-light);
  padding: 12px;
  border-radius: 2px;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 1px solid var(--primary-gold);
}

/* --- Footer --- */
footer {
  background-color: var(--bg-dark);
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .banner-cta {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }
  
  .contact-form {
    grid-template-columns: 1fr;
  }
  
  .form-group.full-width {
    grid-column: span 1;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    position: absolute;
    top: 60px;
    left: 0;
    background-color: var(--bg-dark);
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
  }
  
  .nav-links.active {
    display: flex;
  }
}