/* ============================================
   HK Alanis Supply Chain Management Limited
   Global Styles
   ============================================ */

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

:root {
  --primary-color: #1a3a4a;
  --secondary-color: #2c5aa0;
  --accent-color: #00ff00;
  --light-accent: #7fff00;
  --text-dark: #333333;
  --text-light: #666666;
  --bg-light: #f5f5f5;
  --bg-white: #ffffff;
  --border-color: #e0e0e0;
}

body {
  font-family: 'Arial', 'Helvetica', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-white);
}

html {
  scroll-behavior: smooth;
}

/* ============================================
   Header & Navigation
   ============================================ */

header {
  background-color: var(--bg-white);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo img {
  height: 60px; /* Adjusted to fit menu bar */
  transition: all 0.3s ease;
  position: relative;
  z-index: 1001;
}

.logo:hover img {
  transform: scale(1.1);
}

@keyframes logo-pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

.logo:hover {
  color: var(--secondary-color);
}

nav {
  display: flex;
  gap: 30px;
  align-items: center;
}

nav a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s ease;
  font-size: 14px;
}

nav a:hover {
  color: var(--secondary-color);
}

nav a.active {
  color: var(--accent-color);
  border-bottom: 2px solid var(--accent-color);
  padding-bottom: 5px;
}

.contact-info {
  font-size: 12px;
  color: var(--secondary-color);
}

.contact-info a {
  color: var(--secondary-color);
  text-decoration: none;
}

.contact-info a:hover {
  text-decoration: underline;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), url('../images/hero-shipping-port.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  position: relative;
}

.hero-content {
  max-width: 800px;
  padding: 0 20px;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
  font-weight: bold;
}

.hero p {
  font-size: 18px;
  margin-bottom: 10px;
  line-height: 1.8;
}

.hero .subtitle {
  font-size: 14px;
  opacity: 0.9;
  margin-bottom: 30px;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  background-color: var(--accent-color);
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 4px;
  font-weight: bold;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 14px;
}

.btn:hover {
  background-color: var(--light-accent);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 255, 0, 0.3);
}

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

.btn-secondary:hover {
  background-color: #1e4d7b;
}

/* ============================================
   Main Content
   ============================================ */

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 60px 0;
  border-bottom: 1px solid var(--border-color);
}

section:last-child {
  border-bottom: none;
}

section.bg-light {
  background-color: var(--bg-light);
}

section h2 {
  font-size: 36px;
  text-align: center;
  margin-bottom: 15px;
  color: var(--primary-color);
}

section .section-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 40px;
  font-size: 16px;
}

/* ============================================
   Cards & Grid
   ============================================ */

.grid {
  display: grid;
  gap: 30px;
  margin-top: 40px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 30px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.card h3 {
  color: var(--primary-color);
  margin-bottom: 15px;
  font-size: 20px;
}

.card p {
  color: var(--text-light);
  line-height: 1.8;
}

.card-icon {
  font-size: 40px;
  margin-bottom: 15px;
}

/* ============================================
   Images
   ============================================ */

.image-box {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  height: 250px;
}

.image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.image-box:hover img {
  transform: scale(1.05);
}

.image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  color: white;
  padding: 20px;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.image-box:hover .image-overlay {
  transform: translateY(0);
}

.image-overlay h4 {
  font-size: 18px;
  margin-bottom: 5px;
}

/* ============================================
   Forms
   ============================================ */

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: inherit;
  font-size: 14px;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 5px rgba(44, 90, 160, 0.2);
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

/* ============================================
   Footer
   ============================================ */

footer {
  background-color: var(--primary-color);
  color: white;
  padding: 40px 0 20px;
  margin-top: 60px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-section h4 {
  margin-bottom: 15px;
  font-size: 16px;
}

.footer-logo {
  max-width: 180px;
  margin-bottom: 15px;
  display: block;
  background-color: #ffffff;
  padding: 10px;
  border-radius: 4px;
}

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

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section a {
  color: #ccc;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  text-align: center;
  color: #999;
  font-size: 12px;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    height: auto;
    padding: 15px 20px;
    gap: 15px;
  }

  nav {
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
  }

  nav a {
    font-size: 12px;
  }

  .hero {
    height: 350px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 14px;
  }

  section h2 {
    font-size: 28px;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .image-box {
    height: 200px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 24px;
  }

  section {
    padding: 40px 0;
  }

  section h2 {
    font-size: 22px;
  }

  .card {
    padding: 20px;
  }

  nav {
    gap: 10px;
  }

  nav a {
    font-size: 11px;
  }
}

/* ============================================
   Utility Classes
   ============================================ */

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

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

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

.mt-20 {
  margin-top: 20px;
}

.mt-40 {
  margin-top: 40px;
}

.mb-20 {
  margin-bottom: 20px;
}

.mb-40 {
  margin-bottom: 40px;
}

.hidden {
  display: none;
}

.flex {
  display: flex;
}

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

.gap-20 {
  gap: 20px;
}

.gap-30 {
  gap: 30px;
}