/* ============================================
   INDO DOCS - Maritime Agency Design System
   ============================================ */

/* === FONTS === */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

/* === CSS VARIABLES === */
:root {
  /* Colors - Maritime Palette */
  --navy-deep: #0A2647;
  --navy-medium: #144272;
  --navy-light: #205295;
  --gold: #D4AF37;
  --gold-light: #E8C547;
  --gold-dark: #B8941F;
  --white: #FFFFFF;
  --off-white: #F8F9FA;
  --gray-100: #F1F3F5;
  --gray-200: #E9ECEF;
  --gray-300: #DEE2E6;
  --gray-400: #CED4DA;
  --gray-500: #ADB5BD;
  --gray-600: #6C757D;
  --gray-700: #495057;
  --gray-800: #343A40;
  --gray-900: #212529;
  
  /* Typography */
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Spacing - 8px base */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 1rem;      /* 16px */
  --space-md: 1.5rem;    /* 24px */
  --space-lg: 2rem;      /* 32px */
  --space-xl: 3rem;      /* 48px */
  --space-2xl: 4rem;     /* 64px */
  --space-3xl: 6rem;     /* 96px */
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(10, 38, 71, 0.12);
  --shadow-md: 0 4px 6px rgba(10, 38, 71, 0.15);
  --shadow-lg: 0 10px 25px rgba(10, 38, 71, 0.2);
  --shadow-xl: 0 20px 40px rgba(10, 38, 71, 0.25);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Container Widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* === RESET & BASE === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--gray-800);
  background-color: var(--white);
  overflow-x: hidden;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--navy-deep);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
}

p {
  margin-bottom: var(--space-md);
  color: var(--gray-700);
}

a {
  color: var(--navy-medium);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

strong {
  font-weight: 600;
  color: var(--gray-900);
}

/* === BATIK PATTERN BACKGROUND === */
.batik-pattern {
  position: relative;
  overflow: hidden;
}

.batik-pattern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(212, 175, 55, 0.03) 35px, rgba(212, 175, 55, 0.03) 70px),
    repeating-linear-gradient(-45deg, transparent, transparent 35px, rgba(10, 38, 71, 0.02) 35px, rgba(10, 38, 71, 0.02) 70px);
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

.batik-pattern > * {
  position: relative;
  z-index: 1;
}

/* === LAYOUT === */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-sm {
  max-width: var(--container-sm);
}

.container-md {
  max-width: var(--container-md);
}

.container-lg {
  max-width: var(--container-lg);
}

section {
  padding: var(--space-3xl) 0;
}

/* === HEADER / NAVIGATION === */
.site-header {
  background: linear-gradient(135deg, var(--navy-deep) 0%, var(--navy-medium) 100%);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 2px solid var(--gold);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-md);
  max-width: var(--container-xl);
  margin: 0 auto;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

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

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

.main-nav a {
  color: var(--white);
  font-weight: 500;
  font-size: 0.95rem;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: var(--gold);
  transition: transform var(--transition-base);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  transform: translateX(-50%) scaleX(1);
}

.main-nav a:hover {
  color: var(--gold-light);
  background: rgba(255, 255, 255, 0.05);
}

.main-nav a.active {
  color: var(--gold);
  font-weight: 600;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: 2px solid var(--gold);
  color: var(--gold);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.25rem;
  transition: all var(--transition-base);
}

.mobile-menu-toggle:hover {
  background: var(--gold);
  color: var(--navy-deep);
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--navy-deep);
    border-top: 1px solid var(--gold);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
  }
  
  .main-nav.active {
    max-height: 500px;
  }
  
  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: var(--space-sm);
  }
  
  .main-nav a {
    display: block;
    padding: var(--space-md);
  }
}

/* === HERO SECTION === */
.hero {
  background: linear-gradient(135deg, var(--navy-deep) 0%, var(--navy-light) 100%);
  color: var(--white);
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(212, 175, 55, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container-lg);
  margin: 0 auto;
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
}

.hero h1 {
  color: var(--white);
  margin-bottom: var(--space-md);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero .subtitle {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  color: var(--gold-light);
  font-weight: 500;
  margin-bottom: var(--space-xl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.125rem;
  max-width: 700px;
  margin: 0 auto var(--space-xl);
}

/* === SECTION HEADERS === */
.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-overline {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  color: var(--navy-deep);
  margin-bottom: var(--space-md);
}

.section-description {
  font-size: 1.125rem;
  color: var(--gray-600);
  max-width: 700px;
  margin: 0 auto;
}

/* === GOLD ACCENT DIVIDER === */
.gold-divider {
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: var(--space-md) auto;
}

/* === FOOTER === */
.site-footer {
  background: var(--navy-deep);
  color: var(--white);
  padding: var(--space-2xl) 0 var(--space-md);
  margin-top: var(--space-3xl);
}

.footer-content {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-section h3 {
  color: var(--gold);
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
}

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

.footer-links {
  list-style: none;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

/* === UTILITY CLASSES === */
.text-center {
  text-align: center;
}

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

.text-navy {
  color: var(--navy-deep);
}

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

.bg-gray {
  background-color: var(--gray-100);
}

.bg-navy {
  background-color: var(--navy-deep);
  color: var(--white);
}

.mt-lg {
  margin-top: var(--space-lg);
}

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

.py-lg {
  padding-top: var(--space-lg);
  padding-bottom: var(--space-lg);
}