:root {
  /* Colors */
  --primary: #004d40;     /* Deep Teal */
  --primary-light: #00796b;
  --secondary: #ffe800;   /* Bright Yellow from original */
  --text-dark: #1f2937;
  --text-light: #4b5563;
  --text-inverse: #ffffff;
  --bg-color: #ffffff;
  --bg-light: #f3f4f6;
  --bg-dark: #111827;
  
  /* Typography */
  --font-base: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Inter', var(--font-base);
  
  /* Spacing */
  --spacing-xs: 0.5rem;   /* 8px  */
  --spacing-sm: 1rem;     /* 16px */
  --spacing-md: 2rem;     /* 32px */
  --spacing-lg: 4rem;     /* 64px */
  --spacing-xl: 6rem;     /* 96px */
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
}

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

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

body {
  font-family: var(--font-base);
  color: var(--text-dark);
  background-color: var(--bg-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

p {
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

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

a:hover {
  color: var(--primary-light);
}

/* Utilities */
.container {
  width: 100%;
  padding: 0 var(--spacing-sm);
  margin: 0 auto;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--text-inverse);
}

.btn-primary:hover {
  background-color: var(--primary-light);
  color: var(--text-inverse);
  transform: translateY(-2px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--text-dark);
}

.btn-secondary:hover {
  background-color: #ffd600;
  color: var(--text-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Header & Nav */
.header {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid #e5e7eb;
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  z-index: 100;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
  gap: var(--spacing-xs);
}

.logo img {
  height: 36px; /* slightly smaller to fit inline on mobile */
  width: auto;
}

.nav {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--spacing-xs);
  justify-content: flex-end;
  width: auto;
}

.nav a {
  font-size: 0.9rem; /* slightly smaller text for mobile */
}

/* Hero Section */
.hero {
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  background: radial-gradient(circle at top right, var(--bg-light) 0%, var(--bg-color) 100%);
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.hero h1 span {
  color: var(--primary);
}

.hero p {
  font-size: 1.125rem;
  max-width: 600px;
  margin-bottom: var(--spacing-md);
}

.hero .btn-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* Services */
.services {
  padding: var(--spacing-lg) 0;
  background-color: var(--bg-color);
}

.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
}

.service-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.service-card {
  padding: var(--spacing-md);
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  border: 1px solid #e5e7eb;
  transition: transform 0.3s ease;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.service-icon {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

/* References / Logos Slider */
.references {
  padding: var(--spacing-lg) 0;
  background-color: var(--bg-light);
  text-align: center;
  overflow: hidden;
}

.logo-slider {
  margin-top: var(--spacing-lg);
  position: relative;
  width: 100%;
  display: flex;
  overflow: hidden;
}

.logo-slider::before,
.logo-slider::after {
  content: "";
  position: absolute;
  top: 0;
  width: 100px;
  height: 100%;
  z-index: 2;
}

.logo-slider::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-light) 0%, transparent 100%);
}

.logo-slider::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-light) 0%, transparent 100%);
}

.logo-track {
  display: flex;
  width: max-content;
  animation: scroll 40s linear infinite;
  align-items: center;
}

.logo-track:hover {
  animation-play-state: paused;
}

@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-600px * 4)); }
}

.logo-track img {
  width: 600px;
  height: auto;
  max-height: 450px;
  object-fit: contain;
  padding: 0 var(--spacing-md);
  /* Display full color on touch devices (mobile-first) */
  filter: grayscale(0%);
  opacity: 1;
  transition: all 0.5s ease;
  cursor: pointer;
}

/* Contact / Call to Action */
.cta {
  padding: var(--spacing-lg) 0;
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  text-align: center;
}

.cta h2, .cta p {
  color: var(--text-inverse);
}

.cta p {
  opacity: 0.8;
  margin-bottom: var(--spacing-md);
}

/* Sailing Promo Section */
.sailing-promo-section {
  padding: var(--spacing-lg) 0;
  text-align: center;
  background-color: var(--bg-light);
  border-top: 1px solid #e5e7eb;
}

.sailing-promo-section h2 {
  color: var(--text-dark);
  font-size: 1.75rem;
}

.sailing-promo-section .sailing-promo {
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.125rem;
  color: var(--text-light);
  line-height: 1.6;
}

.sailing-promo-section a {
  font-weight: 600;
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: all 0.3s ease;
}

.sailing-promo-section a:hover {
  text-decoration-color: var(--primary);
}

/* Footer & Legal Info */
.footer {
  padding: var(--spacing-lg) 0 var(--spacing-md);
  text-align: left;
  background-color: var(--bg-color);
  border-top: 1px solid #e5e7eb;
}

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

.legal-col h3 {
  color: var(--primary);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.legal-col p {
  color: var(--text-light);
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 0;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid #e5e7eb;
}

.copyright {
  font-size: 0.875rem;
  color: #9ca3af;
}

/* Media Queries (Desktop) */
@media screen and (min-width: 768px) {
  .container {
    max-width: 1200px;
    padding: 0 var(--spacing-md);
  }
  
  .logo img {
    height: 48px;
  }
  
  .nav {
    display: flex;
    gap: var(--spacing-md);
    width: auto;
  }
  
  .nav a {
    color: var(--text-dark);
    font-weight: 500;
    font-size: 1rem;
  }
  
  .nav a:hover {
    color: var(--primary);
  }

  .logo-track img {
    filter: grayscale(80%);
    opacity: 0.8;
  }
  
  .logo-track img:hover {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.05);
    position: relative;
    z-index: 10;
  }

  .hero h1 {
    font-size: 3.5rem;
  }
  
  .hero p {
    font-size: 1.25rem;
  }
  
  .hero .btn-group {
    flex-direction: row;
  }

  .service-grid {
    flex-direction: row;
  }
  
  .service-card {
    flex: 1;
  }

  .logo-slider::before {
    width: 200px;
  }
  
  .logo-slider::after {
    width: 200px;
  }

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