/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { min-height: 100vh; line-height: 1.6; -webkit-font-smoothing: antialiased; }
ul, ol { list-style: none; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { font: inherit; border: none; background: none; cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent-orange); outline-offset: 2px; }

/* ===== VARIABLES ===== */
:root {
  --primary-dark-blue: #0D1B2A;
  --primary-blue: #1B3A5C;
  --accent-orange: #FF6F00;
  --accent-orange-gradient: linear-gradient(135deg, #FF6F00, #FF8F00);
  --neutral-dark: #333333;
  --neutral-light: #F5F5F5;
  --white: #FFFFFF;
  --text-secondary: #B0BEC5;
  --link-hover: #FF8F00;
  --header-height: 68px;
  --progress-height: 3px;
  --max-width: 1200px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --font-head: var(--font-sans);
  --font-body: var(--font-sans);
}
body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  color: var(--white);
  background: var(--primary-dark-blue);
}

/* ===== SKIP LINK ===== */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  z-index: 9999;
  padding: 0.75rem 1.5rem;
  background: var(--accent-orange);
  color: var(--white);
  font-weight: 700;
  border-radius: 0 0 4px 0;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* ===== CONTAINER ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}
@media (min-width: 768px) {
  .container { padding: 0 2rem; }
}

/* ===== BUTTON ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.6rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 30px;
  transition: background 0.25s, transform 0.2s;
  cursor: pointer;
}
.btn-accent {
  background: var(--accent-orange);
  color: var(--white);
}
.btn-accent:hover { background: var(--link-hover); transform: scale(1.02); }
.btn-outline {
  background: transparent;
  border: 2px solid var(--accent-orange);
  color: var(--accent-orange);
}
.btn-outline:hover {
  background: var(--accent-orange);
  color: var(--white);
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.5rem;
  padding: 1rem 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.breadcrumb a { color: var(--accent-orange); }
.breadcrumb a:hover { color: var(--link-hover); }
.breadcrumb .breadcrumb-item::after {
  content: '/';
  margin-left: 0.4rem;
  color: var(--text-secondary);
}
.breadcrumb .breadcrumb-item:last-child::after { content: none; }

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--primary-dark-blue);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 1rem;
}
.brand { flex-shrink: 0; }
.brand-link { display: flex; align-items: baseline; gap: 0.2rem; }
.brand-name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  color: var(--white);
}
.brand-sub {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 0.8rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
}

/* Navigation toggle (hamburger) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 10;
}
.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle-icon {
  position: relative;
  margin: 0 auto;
}
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  position: absolute;
  left: 0;
}
.nav-toggle-icon::before { top: -7px; }
.nav-toggle-icon::after { top: 7px; }
/* open state via JS toggle on nav-toggle button? we will set data-open on nav, but toggle icon can be styled via sibling? simpler: use JS to toggle class on button */
.nav-toggle.active .nav-toggle-icon { background: transparent; }
.nav-toggle.active .nav-toggle-icon::before { top: 0; transform: rotate(45deg); }
.nav-toggle.active .nav-toggle-icon::after { top: 0; transform: rotate(-45deg); }

/* Capsule navigation */
.capsule-nav { display: flex; }
.nav-list {
  display: flex;
  gap: 0.25rem;
  padding: 0.25rem;
  background: rgba(255,255,255,0.08);
  border-radius: 40px;
  backdrop-filter: blur(6px);
}
.nav-link {
  display: block;
  padding: 0.45rem 1.2rem;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--white);
  border-radius: 30px;
  transition: background 0.25s, color 0.25s;
  white-space: nowrap;
}
.nav-link:hover { background: rgba(255,255,255,0.15); }
.nav-link[aria-current="page"] {
  background: var(--accent-orange);
  color: var(--white);
  font-weight: 700;
}

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--progress-height);
  background: var(--neutral-dark);
  z-index: 101;
  pointer-events: none;
}
.scroll-progress-bar {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--accent-orange-gradient);
  transition: width 0.1s linear;
}

/* ===== RESPONSIVE HEADER ===== */
@media (max-width: 767px) {
  .nav-toggle { display: flex; }
  .capsule-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(13,27,42,0.98);
    backdrop-filter: blur(10px);
    padding: 1rem;
    border-bottom: 2px solid var(--accent-orange);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
  }
  .capsule-nav[data-open] {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-list {
    flex-direction: column;
    gap: 0.5rem;
    background: transparent;
    backdrop-filter: none;
    border-radius: 0;
    padding: 0;
  }
  .nav-link {
    padding: 0.7rem 1.2rem;
    font-size: 1rem;
    border-radius: 8px;
  }
  .nav-link[aria-current="page"] {
    background: var(--accent-orange);
  }
}
@media (min-width: 768px) {
  .capsule-nav { display: flex; }
  .nav-toggle { display: none; }
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--primary-blue);
  color: var(--white);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
  border-top: 3px solid var(--accent-orange);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-areas:
      "brand contact nav"
      "legal legal legal";
  }
  .footer-brand { grid-area: brand; }
  .footer-contact { grid-area: contact; }
  .footer-nav { grid-area: nav; }
  .footer-legal { grid-area: legal; }
}
.footer-logo {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.8rem;
  letter-spacing: 0.05em;
}
.footer-sub {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-left: 0.3rem;
}
.footer-contact {
  line-height: 1.8;
  font-size: 0.9rem;
}
.contact-item { margin-bottom: 0.3rem; }
.contact-item.note { font-size: 0.8rem; color: var(--text-secondary); }
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--link-hover); }
.footer-legal {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.footer-legal .icp { font-weight: 600; color: var(--text-secondary); }
.footer-legal .trust-statement { margin-top: 0.3rem; }
.footer-legal .copyright { margin-top: 0.5rem; }

/* ===== UTILITY ===== */
.padding-top-offset { padding-top: calc(var(--header-height) + var(--progress-height)); }

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .scroll-progress-bar { transition: none; }
  .capsule-nav { transition: none; }
}

/* ===== RESPONSIVE IMAGE CONTAINER (placeholder) ===== */
.image-container {
  position: relative;
  overflow: hidden;
  background: var(--primary-blue);
  aspect-ratio: 16 / 9;
  border-radius: 4px;
}
.image-container::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent-orange);
  opacity: 0.08;
}