/* --- Global Reset & Typography --- */
:root {
  --color-primary: #003b5c; /* Deep, Trustworthy Blue (Navy) */
  --color-secondary: #4ecdc4; /* Soft Cyan/Aqua (Accent 1 - Professional) */
  --color-accent: #ffb700; /* Subtle Gold/Metallic Yellow (Accent 2 - Luxury) */
  --color-text-dark: #333333;
  --color-text-light: #f4f4f4;
  --color-bg-light: #ffffff;
  --color-bg-dark: #002b46; /* Darker Blue/Almost Black for sections */
  --font-family-primary: "Poppins", sans-serif;
}

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

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

h1,
h2,
h3,
h4 {
  font-weight: 600;
}

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

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

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

.section-padding {
  padding: 80px 0;
}

.section-title {
  font-size: 2.5rem;
  color: var(--color-secondary);
  text-align: center;
  margin-bottom: 15px;
  position: relative;
}

.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--color-accent);
  margin: 10px auto 0;
}

.section-subtitle {
  font-size: 1.1rem;
  text-align: center;
  color: #b0c4cc;
  margin-bottom: 40px;
}

.highlight {
  color: var(--color-accent);
}

.cta-primary {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-text-dark);
  padding: 14px 30px;
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 5px;
  transition: background-color 0.3s ease, transform 0.3s;
}

.cta-primary:hover {
  background-color: var(--color-secondary);
  color: var(--color-bg-dark);
  transform: translateY(-2px);
}

.cta-secondary {
  display: inline-block;
  background-color: transparent;
  border: 2px solid var(--color-secondary);
  color: var(--color-secondary);
  padding: 10px 25px;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 5px;
  transition: all 0.3s ease;
  margin-top: 20px;
}

.cta-secondary:hover {
  background-color: var(--color-secondary);
  color: var(--color-bg-dark);
}

/* --- Header & Navigation --- */
.main-header {
  position: relative;
  height: 100vh;
  color: var(--color-text-light);
  display: flex;
  flex-direction: column;
}

.header-media-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.background-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2; /* Subtle video background */
}

.navbar-top {
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  background-color: rgba(0, 43, 70, 0.7); /* Semi-transparent header */
}

.logo {
  height: 40px;
  border-radius: 50%;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
  margin: 0;
}

.main-nav a {
  color: var(--color-text-light);
  font-weight: 400;
  position: relative;
}

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

.auth-buttons a {
  padding: 8px 15px;
  border-radius: 5px;
  font-weight: 600;
  margin-left: 10px;
}

.btn-signin {
  border: 1px solid var(--color-secondary);
  color: var(--color-secondary);
}

.btn-signin:hover {
  background-color: var(--color-secondary);
  color: var(--color-bg-dark);
}

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

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

.menu-icon {
  display: none;
  font-size: 30px;
  cursor: pointer;
  color: var(--color-secondary);
}

/* Hero Content */
.hero-section {
  position: relative;
  z-index: 2;
  flex-grow: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 20px;
}

.hero-content h1 {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: 20px;
  max-width: 800px;
}

.hero-content p {
  font-size: 1.25rem;
  margin-bottom: 40px;
  max-width: 600px;
  color: #b0c4cc;
  margin-left: auto;
  margin-right: auto;
}

/* --- Side Menu (Mobile) --- */
.side-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 300px;
  height: 100%;
  background-color: var(--color-bg-dark);
  transition: right 0.3s ease-in-out;
  padding: 20px;
  z-index: 9999;
  box-shadow: -5px 0 15px rgba(0, 0, 0, 0.5);
}

.side-menu.open {
  right: 0;
}

.close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 40px;
  color: var(--color-secondary);
  cursor: pointer;
}

.side-menu nav ul {
  list-style-type: none;
  padding-top: 60px;
}

.side-menu nav ul li {
  margin: 20px 0;
}

.side-menu nav ul li a {
  color: var(--color-text-light);
  font-size: 1.2rem;
  display: block;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.side-menu .btn-signin-mobile,
.side-menu .btn-signup-mobile {
  display: block;
  text-align: center;
  margin-top: 15px;
  padding: 10px;
  font-weight: 600;
  border-radius: 5px;
}

.side-menu .btn-signin-mobile {
  border: 1px solid var(--color-secondary);
  color: var(--color-secondary);
}

.side-menu .btn-signup-mobile {
  background-color: var(--color-accent);
  color: var(--color-text-dark);
}

/* --- Feature Links Section --- */
.feature-links-section {
  background-color: var(--color-primary);
  padding: 40px 0;
}

.links-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  max-width: 1200px;
  margin: auto;
}

.link-card {
  position: relative;
  height: 200px;
  border-radius: 10px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s, box-shadow 0.3s;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Card Specific Backgrounds (use appropriate maritime/financial images for production) */
.card-about {
  background-image: url("../img/invest-office.jpg");
} /* Placeholder for About/Vision */
.card-ships {
  background-image: url("../img/cruise-ship-deck.jpg");
} /* Placeholder for Ships/Fleet */
.card-invest {
  background-image: url("../img/financial-chart.jpg");
} /* Placeholder for Invest/Plans */
.card-testimonial {
  background-image: url("../img/trust-handshake.jpg");
} /* Placeholder for Testimonial/Trust */

.link-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  transition: background-color 0.3s;
  z-index: 1;
}

.link-card:hover::before {
  background-color: rgba(0, 43, 70, 0.8); /* Darker overlay on hover */
}

.text-overlay {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-text-light);
  padding: 20px;
}

.text-overlay h3 {
  font-size: 1.5rem;
  margin: 0;
  transition: opacity 0.3s;
}

.text-overlay p {
  font-size: 1rem;
  opacity: 0;
  height: 0;
  margin-top: 10px;
  transition: opacity 0.3s, height 0.3s;
  overflow: hidden;
}

.link-card:hover .text-overlay h3 {
  opacity: 0;
}

.link-card:hover .text-overlay p {
  opacity: 1;
  height: auto;
}

.link-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
}

/* --- About Us Section --- */
.about-us-section {
  background-color: var(--color-bg-light);
  color: var(--color-text-dark);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.lead-text {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--color-primary);
}

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

/* --- Leadership Section --- */
.leadership-section {
  background-color: var(--color-bg-dark);
}

.team-cards-container {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.leader-card {
  display: flex;
  align-items: center;
  max-width: 500px;
  background-color: var(--color-primary);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.leader-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: 20px;
  border: 3px solid var(--color-accent);
}

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

.leader-info h4 {
  font-size: 1.3rem;
  margin-bottom: 2px;
  color: var(--color-text-light);
}

.leader-info h6 {
  font-size: 0.9rem;
  color: var(--color-secondary);
  margin-bottom: 10px;
  font-weight: 400;
}

.leader-info p {
  font-size: 0.9rem;
  color: #b0c4cc;
  margin-bottom: 15px;
}

.btn-read-more {
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 600;
}

/* --- Fleet Showcase (Carousel) --- */
.fleet-showcase-section {
  padding: 60px 0;
  background-color: var(--color-primary);
  text-align: center;
}

.fleet-description {
  max-width: 800px;
  margin: 0 auto 40px;
  font-size: 1.1rem;
  color: #b0c4cc;
}

#fleetCarousel {
  max-width: 1000px;
  margin: 0 auto;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

.carousel-item video {
  height: 500px;
  object-fit: cover;
}

.carousel-caption {
  background: rgba(0, 0, 0, 0.5);
  padding: 15px;
  border-radius: 0 0 10px 10px;
}

.carousel-caption h3 {
  font-size: 1.8rem;
  color: var(--color-accent);
}

/* --- Investment Process & Calculator Section --- */
.investment-process-section {
  background-color: var(--color-bg-light);
  color: var(--color-text-dark);
}

.process-steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.step-card {
  background: var(--color-bg-light);
  border: 1px solid #e0e0e0;
  color: var(--color-text-dark);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s;
  text-align: left;
  position: relative;
  overflow: hidden;
}

.step-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.brief-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  gap: 60px; /* Increased gap for visual separation */
  align-items: flex-start;
}

.brief-text-content {
  flex: 3; /* Takes up more space */
  max-width: 65%; /* Adjusted max-width slightly */
}

.brief-title {
  color: var(--color-text-light);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 25px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.brief-paragraph {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 18px;
  color: var(--color-text-light);
}

.btn-about-oasis {
  display: inline-block;
  padding: 12px 30px;
  border: 1px solid var(--color-text-light);
  color: var(--color-text-light);
  text-decoration: none;
  font-weight: 600;
  margin-top: 25px;
  transition: background-color 0.3s, color 0.3s;
  border-radius: 4px; /* Slightly rounded corners for buttons */
}

.btn-about-oasis:hover {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  color: var(--color-primary);
}

/* --- Right Side: Metrics --- */
.brief-metrics {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 40px; /* Increased vertical spacing */
  padding-left: 40px; /* More padding */
  border-left: 1px solid rgba(255, 255, 255, 0.15); /* Slightly more visible separator */
}

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

.metric-value {
  font-size: 2.8rem; /* Slightly larger numbers */
  font-weight: 700;
  color: var(--color-accent); /* Subtle Gold/Metallic Yellow */
  display: block;
  margin-bottom: 5px;
  line-height: 1;
}

.metric-label {
  font-size: 0.95rem; /* Slightly larger label text */
  color: var(--color-text-light);
  opacity: 0.9;
  line-height: 1.4;
  margin: 0;
}

.oasis-brief-section {
  background-color: var(--color-primary); 
  color: var(--color-text-light);
  padding: 80px 0;
}
.step-number {
  font-size: 3.5rem;
  font-weight: 700;
  color: rgba(0, 59, 92, 0.1); /* Light opacity of primary color */
  position: absolute;
  top: 5px;
  right: 15px;
  z-index: 1;
}

.step-card h4 {
  font-size: 1.4rem;
  color: var(--color-primary);
  margin-bottom: 10px;
  position: relative;
  z-index: 2;
}

.step-card p {
  font-size: 1rem;
  color: var(--color-text-dark);
  position: relative;
  z-index: 2;
}

/* ROI Calculator */
.roi-calculator-section {
  background: var(--color-bg-dark);
  padding: 50px 0;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

.calculator-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  max-width: 900px;
  margin: auto;
}

.calculator-visual {
  background: var(--color-secondary);
  border-radius: 10px;
  padding: 40px;
  color: var(--color-bg-dark);
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.visual-roi {
  font-size: 4rem;
  font-weight: 700;
  display: block;
  line-height: 1;
}

.calculator-visual p {
  font-size: 1.2rem;
  font-weight: 600;
}

.calculator-form-area {
  background: var(--color-primary);
  padding: 30px;
  border-radius: 10px;
  color: var(--color-text-light);
  flex: 1;
  max-width: 400px;
}

.calculator-form-area h2 {
  font-size: 1.8rem;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.form-calculator label {
  display: block;
  text-align: left;
  margin: 10px 0 5px;
  font-weight: 400;
  font-size: 0.9rem;
  color: #b0c4cc;
}

.form-calculator input,
.form-calculator select {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid var(--color-secondary);
  border-radius: 5px;
  font-size: 1rem;
  background: var(--color-bg-dark);
  color: var(--color-text-light);
}

.form-calculator input::placeholder {
  color: #888;
}

.form-calculator button {
  background-color: var(--color-accent);
  color: var(--color-bg-dark);
  border: none;
  padding: 12px 20px;
  font-size: 1rem;
  border-radius: 5px;
  cursor: pointer;
  width: 100%;
  font-weight: 600;
  transition: background-color 0.3s;
}

.form-calculator button:hover {
  background-color: var(--color-secondary);
}

.result-display {
  margin-top: 20px;
  padding: 10px;
  border-radius: 5px;
  font-size: 1.1rem;
  font-weight: 600;
  text-align: center;
  color: var(--color-accent);
  background-color: rgba(255, 183, 0, 0.1);
}

.cta-button {
  margin-top: 20px;
  display: block;
  text-align: center;
  background-color: var(--color-secondary);
  color: var(--color-bg-dark);
  padding: 10px 20px;
  font-size: 1rem;
  border-radius: 5px;
  font-weight: 600;
  transition: background-color 0.3s;
}

.cta-button:hover {
  background-color: var(--color-accent);
}

/* --- Testimonials Section --- */
.testimonials-section {
  background: var(--color-bg-dark);
  text-align: center;
}

.pre-title {
  font-size: 1.8rem;
  margin-bottom: 40px;
  color: #b0c4cc;
}

.highlight-brand {
  font-weight: 700;
  color: var(--color-secondary);
}

.testimonial-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.testimonial-card {
  background: var(--color-primary);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
  text-align: left;
}

.testimonial-card:hover {
  transform: translateY(-5px);
}

.quote {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--color-text-light);
  margin-bottom: 15px;
}

.author {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-accent);
  text-align: right;
}

/* --- Footer --- */
.main-footer {
  background-color: var(--color-primary);
  color: #b0c4cc;
  padding: 40px 0 10px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 2fr; /* Adjusted for better desktop layout */
  gap: 40px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-block h3 {
  color: var(--color-secondary);
  margin-bottom: 15px;
  font-size: 1.1rem;
}

.brand-info-block {
  grid-column: span 1;
}

.brand-tagline {
  margin-bottom: 15px;
}

.footer-block ul {
  list-style: none;
  padding: 0;
}

.footer-block ul li {
  margin-bottom: 8px;
}

.footer-block a {
  color: #b0c4cc;
  transition: color 0.3s;
}

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

.subscribe-form {
  display: flex;
  gap: 5px;
}

.subscribe-form input {
  padding: 8px;
  border-radius: 5px;
  border: 1px solid var(--color-secondary);
  outline: none;
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
}

.subscribe-form button {
  padding: 8px 15px;
  background-color: var(--color-secondary);
  color: var(--color-bg-dark);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.3s;
}

.subscribe-form button:hover {
  background-color: var(--color-accent);
}

.blog-links-block {
  grid-column: span 1;
}

.blog-link-item p {
  margin-bottom: 10px;
  border-bottom: 1px dotted rgba(255, 255, 255, 0.1);
  padding-bottom: 5px;
}

.blog-link-item a {
  color: #b0c4cc;
}

.footer-bottom {
  text-align: center;
  margin-top: 20px;
  font-size: 0.75rem;
  color: #888;
}

/* --- Scroll To Top Button --- */
.scroll-to-top-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: var(--color-accent);
  color: var(--color-bg-dark);
  border: none;
  padding: 12px 18px;
  font-size: 20px;
  border-radius: 50%;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition: background-color 0.3s, opacity 0.3s;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
}

.scroll-to-top-btn.visible {
  opacity: 1;
  pointer-events: auto;
}

.scroll-to-top-btn:hover {
  background-color: var(--color-secondary);
}

/* --- Responsive Adjustments --- */
@media (max-width: 1024px) {
  .navbar-top {
    padding: 15px 20px;
  }

  .main-nav {
    display: none; /* Hide desktop menu for smaller screens */
  }

  .auth-buttons {
    display: none; /* Hide desktop auth buttons */
  }

  .menu-icon {
    display: block;
  }

  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-content p {
    font-size: 1.1rem;
  }

  .carousel-item video {
    height: 400px;
  }

  .calculator-container {
    flex-direction: column;
    gap: 30px;
  }

  .calculator-visual {
    width: 100%;
    max-width: 300px;
  }

  .calculator-form-area {
    width: 100%;
    max-width: none;
  }

  .footer-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }

  .blog-links-block {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .section-padding {
    padding: 60px 0;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-content p {
    font-size: 1rem;
  }

  .leader-card {
    flex-direction: column;
    text-align: center;
  }

  .leader-photo {
    margin: 0 auto 15px;
  }

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

  .carousel-item video {
    height: 300px;
  }
}

@media (max-width: 480px) {
  .navbar-top {
    padding: 10px 15px;
  }
  .logo {
    height: 35px;
  }

  .hero-content h1 {
    font-size: 1.8rem;
  }
  .section-title {
    font-size: 2rem;
  }

  .footer-grid {
    grid-template-columns: minmax(100%, 1fr);
  }

  .blog-links-block {
    grid-column: span 1;
  }
}