/* ============================================
   NAUTICAL MODERNISM - MARITIME WEBSITE
   Design System & Global Styles
   ============================================ */

/* CSS Variables - Design System */
:root {
  /* Colors - Primary */
  --color-primary-dark: #0A2342;
  --color-primary-light: #1A4D6D;
  
  /* Colors - Accent */
  --color-accent-gold: #D4AF37;
  --color-accent-teal: #00B4D8;
  
  /* Colors - Neutrals */
  --color-white: #FFFFFF;
  --color-light-gray: #F5F7FA;
  --color-gray: #E8EAED;
  --color-dark-gray: #6B7280;
  --color-black: #0F1419;
  
  /* Typography */
  --font-serif: 'Playfair Display', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* ============================================
   BASE STYLES
   ============================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-black);
  background-color: var(--color-white);
  line-height: 1.6;
  max-width: 100%;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

/* Paragraphs */
p {
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

/* Links */
a {
  color: var(--color-accent-teal);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

/* Lists */
ul, ol {
  margin: 0 0 var(--space-md) 0;
  padding-left: var(--space-lg);
  list-style: disc;
}

li {
  margin: 0 0 var(--space-xs) 0;
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

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

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

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

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

.flex-col {
  flex-direction: column;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Grid Utilities */
.grid {
  display: grid;
  gap: var(--space-lg);
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 768px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Spacing Utilities */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }

/* Text Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }

.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.5rem; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-normal { font-weight: 400; }

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

.no-wrap {
  white-space: nowrap;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  font-size: 1rem;
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  text-align: center;
  font-family: var(--font-sans);
}

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

.btn-primary:hover {
  background-color: #B8941F;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: 1.125rem;
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: 0.875rem;
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  background-color: var(--color-gray);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

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

.card-content {
  padding: var(--space-lg);
}

.card-content h3 {
  margin-bottom: var(--space-md);
  color: var(--color-primary-dark);
}

.card-content p {
  color: var(--color-dark-gray);
  margin-bottom: 0;
}

/* ============================================
   FORMS
   ============================================ */

.form-group {
  margin-bottom: var(--space-lg);
}

label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 600;
  color: var(--color-primary-dark);
}

input, textarea, select {
  width: 100%;
  padding: var(--space-sm);
  border: 2px solid var(--color-gray);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: border-color var(--transition-base);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--color-accent-teal);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
}

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

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: #ffffff;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  padding: 0.5rem 0;
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow-sm);
  padding: 0.25rem 0;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  width: 100%;
  max-width: 100%;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  transition: color var(--transition-base);
  display: flex;
  align-items: center;
}

.logo img {
  height: 48px;
  width: auto;
  transition: transform var(--transition-base);
}

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

.navbar.scrolled .logo img {
  transform: scale(0.75);
  transform-origin: left center;
}

@media (min-width: 769px) {
  .navbar {
    height: 100px;
  }

  .navbar.scrolled {
    height: 70px;
  }

  .navbar .container {
    height: 100%;
  }

  .logo img {
    height: 80px;
  }
}

.navbar.scrolled .nav-menu ul {
  gap: var(--space-md);
}

.navbar.scrolled .nav-menu a {
  font-size: 0.9rem;
}

.nav-menu {
  margin: 0;
  padding: 0;
}

.nav-menu ul {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  padding: 0;
  margin: 0;
}

.nav-menu a {
  color: var(--color-primary-dark);
  font-weight: 500;
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent-gold);
  transition: width var(--transition-base);
}

.nav-menu a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-primary-dark);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    position: fixed;
    top: var(--space-sm);
    right: var(--space-sm);
    z-index: 1100;
  }
  
  .nav-menu {
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
    display: none;
    z-index: 1001;
  }
  
  .nav-menu ul {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    margin: 0;
  }
  
  .nav-menu.active {
    display: block;
  }
  
  .nav-menu li {
    margin: 0;
    display: flex;
    width: 100%;
  }
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 80px;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

.hero-background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(10, 35, 66, 0.9) 0%,
    rgba(10, 35, 66, 0.7) 50%,
    transparent 100%
  );
  z-index: -1;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: left;
  color: var(--color-white);
  max-width: 600px;
}

.hero-content h1 {
  font-size: 4rem;
  margin-bottom: var(--space-md);
  line-height: 1.1;
}

.hero-content .tagline {
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
  opacity: 0.95;
}

.cta-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
  color: var(--color-white);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-10px); }
}

@media (max-width: 768px) {
  .hero {
    min-height: 80vh;
    margin-top: 80px;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .hero-content .tagline {
    font-size: 1.25rem;
  }
  
  .cta-buttons {
    flex-direction: column;
  }
  
  .cta-buttons .btn {
    width: 100%;
  }
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about {
  padding: var(--space-2xl) 0;
  background-color: var(--color-white);
}

.about h2 {
  text-align: center;
  margin-bottom: var(--space-xl);
  color: var(--color-primary-dark);
}

.about-content p {
  font-size: 1.125rem;
  color: var(--color-dark-gray);
  margin-bottom: var(--space-lg);
  line-height: 1.9;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-2xl) 0;
}

.about-card {
  background: linear-gradient(135deg, rgba(10, 35, 66, 0.05) 0%, rgba(0, 180, 216, 0.05) 100%);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-accent-gold);
}

.about-card h3 {
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
}

.about-card p {
  color: var(--color-dark-gray);
  margin-bottom: 0;
}

.values-section {
  margin-top: var(--space-2xl);
}

.values-section h3 {
  text-align: center;
  margin-bottom: var(--space-xl);
  color: var(--color-primary-dark);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
}

.value-card {
  text-align: center;
  padding: var(--space-lg);
}

.value-card h4 {
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
}

.value-card p {
  color: var(--color-dark-gray);
  margin-bottom: 0;
}

/* ============================================
   SERVICES SECTION
   ============================================ */

.services {
  padding: var(--space-2xl) 0;
  background-color: var(--color-light-gray);
}

.services h2 {
  text-align: center;
  margin-bottom: var(--space-md);
  color: var(--color-primary-dark);
}

.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  color: var(--color-dark-gray);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.service-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.service-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-8px);
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact {
  padding: var(--space-2xl) 0;
  background-color: var(--color-white);
}

.contact h2 {
  text-align: center;
  margin-bottom: var(--space-md);
  color: var(--color-primary-dark);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  margin-top: var(--space-xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.info-item h4 {
  color: var(--color-primary-dark);
  margin-bottom: var(--space-sm);
}

.info-item p, .info-item a {
  color: var(--color-dark-gray);
  font-size: 1.125rem;
}

.contact-form {
  background-color: var(--color-light-gray);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
}

@media (max-width: 768px) {
  .contact-content {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  padding: var(--space-2xl) 0 var(--space-lg);
}

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

.footer-section h4 {
  color: var(--color-accent-gold);
  margin-bottom: var(--space-md);
}

.footer-section p {
  color: var(--color-light-gray);
  margin-bottom: var(--space-sm);
}

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

.footer-section li {
  margin-bottom: var(--space-sm);
}

.footer-section a {
  color: var(--color-light-gray);
  transition: color var(--transition-base);
}

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

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  color: var(--color-light-gray);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  color: var(--color-light-gray);
  font-size: 0.875rem;
}

@media (max-width: 768px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-links {
    justify-content: center;
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.5rem; }
  
  .container {
    padding: 0 var(--space-sm);
  }
  
  .section-subtitle {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .services-grid, .about-grid, .values-grid {
    grid-template-columns: 1fr;
  }
}