:root {
  --color-bg-primary: #0B1D3A;
  --color-bg-secondary: #102A43;
  --color-bg-muted: #E2E8F0;
  --color-border: #1E3A6E;
  --color-accent: #00E676;
  --color-link: #2A6FDB;
  --color-white: #FFFFFF;
  --color-text: #1A202C;
  --color-warning: #FF6D00;
  --color-data: #7C4DFF;
  --font-heading: 'Archivo Black', 'Noto Sans SC Black', system-ui, sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --container-w: 1200px;
  --radius: 8px;
  --transition: 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

#main-content { display: block; min-height: 60vh; }

img, svg, video { display: block; max-width: 100%; height: auto; }

a { color: var(--color-link); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }

ul { list-style: none; }

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* +++++ CONTAINERS +++++ */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-2);
  padding-right: var(--space-2);
}
.container--wide { max-width: 1400px; }
.container--narrow { max-width: 800px; }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .container { padding-left: var(--space-3); padding-right: var(--space-3); }
}

/* +++++ BUTTONS +++++ */
.btn {
  display: inline-block;
  padding: 0.65rem 1.5rem;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-size: 1rem;
  line-height: 1.2;
  background-color: var(--color-bg-secondary);
  color: var(--color-white);
  border: 2px solid var(--color-border);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
}
.btn:hover {
  background-color: var(--color-border);
  color: var(--color-white);
  transform: translateY(-2px);
}
.btn--accent {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg-primary);
}
.btn--accent:hover {
  background-color: #00c853;
  border-color: #00c853;
  color: var(--color-bg-primary);
}
.btn--skew {
  transform: skewX(-8deg);
}
.btn--skew:hover {
  transform: skewX(-8deg) translateY(-2px);
}

/* +++++ HEADER +++++ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(11, 29, 58, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}
.header__topbar {
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid rgba(30, 58, 110, 0.4);
  font-size: 0.75rem;
  color: var(--color-white);
  opacity: 0.8;
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-1);
  padding-bottom: var(--space-1);
}
.topbar__text--region {
  color: var(--color-accent);
  font-weight: bold;
}
.header__main {
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}
.header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.brand {
  display: flex;
  flex-direction: column;
  margin-right: auto;
}
.brand__name {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  color: var(--color-white);
  line-height: 1.1;
  letter-spacing: 0.02em;
  text-shadow: 0 0 12px rgba(0, 230, 118, 0.2);
}
.brand__tag {
  font-size: 0.65rem;
  color: var(--color-accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.main-nav {
  order: 3;
  flex-basis: 100%;
}
.nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.nav__link {
  display: inline-block;
  padding: var(--space-1) 0;
  color: var(--color-white);
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.nav__link:hover {
  color: var(--color-link);
  border-bottom-color: var(--color-link);
}
.nav__link[aria-current="page"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}
.site-header .btn {
  order: 2;
}

/* Nav Toggle (Mobile) */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  background: transparent;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.5rem;
  cursor: pointer;
  gap: 4px;
}
.nav-toggle__line {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--color-accent);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav state */
#primary-nav:not([data-open]) { display: none; }
#primary-nav[data-open] { display: block; }

@media (min-width: 992px) {
  .nav-toggle { display: none; }
  .main-nav { order: 0; flex-basis: auto; }
  .nav__list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-2);
  }
  .nav__link { padding: var(--space-1) var(--space-2); }
  .header__inner { flex-wrap: nowrap; }
  .site-header .btn { order: 0; }
}

/* +++++ FOOTER +++++ */
.site-footer {
  margin-top: var(--space-5);
  background-color: var(--color-bg-primary);
  position: relative;
  border-top: 4px solid var(--color-border);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-link), var(--color-data));
}
.footer__top {
  padding: var(--space-5) 0;
  background: linear-gradient(180deg, var(--color-bg-secondary), var(--color-bg-primary));
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
.footer__col .footer__heading {
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 1rem;
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.footer__logo {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-accent);
  letter-spacing: 0.03em;
  margin-bottom: var(--space-1);
}
.footer__slogan {
  color: var(--color-bg-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 30ch;
}
.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.footer__list a {
  color: var(--color-bg-muted);
  transition: color var(--transition);
}
.footer__list a:hover {
  color: var(--color-accent);
}
.footer__list--muted li {
  color: rgba(226, 232, 240, 0.7);
  font-size: 0.875rem;
}
.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--space-3) 0;
}
.footer__bottom-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  color: rgba(226, 232, 240, 0.6);
  font-size: 0.8rem;
}
@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 1.2fr 1fr 1fr 1.5fr; }
  .footer__bottom-inner { flex-direction: row; justify-content: space-between; }
}

/* +++++ BREADCRUMB +++++ */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3) 0;
  font-size: 0.875rem;
  color: var(--color-bg-muted);
}
.breadcrumb a {
  color: var(--color-white);
  opacity: 0.6;
}
.breadcrumb a:hover {
  opacity: 1;
  color: var(--color-accent);
}
.breadcrumb .breadcrumb__sep {
  display: inline-block;
  color: var(--color-border);
}

/* +++++ SECTION HEADING +++++ */
.section-heading {
  margin-bottom: var(--space-4);
}
.section-heading__sub {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}
.section-heading__title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--color-white);
  line-height: 1.2;
}

/* +++++ MEDIA FRAME (Image Placeholder Base) +++++ */
.media-frame {
  position: relative;
  overflow: hidden;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
}
.media-frame img,
.media-frame canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 70%, rgba(0, 230, 118, 0.15) 100%);
  pointer-events: none;
}

/* +++++ SCROLL PROGRESS +++++ */
[data-scroll-progress] {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 200;
  background-color: rgba(30, 58, 110, 0.3);
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background-color: var(--color-accent);
  transform-origin: left center;
  transform: scaleX(0);
  will-change: transform;
}

/* +++++ SKIP LINK +++++ */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 300;
  background-color: var(--color-accent);
  color: var(--color-bg-primary);
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-heading);
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus-visible {
  left: 0;
  color: var(--color-bg-primary);
}

/* +++++ 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;
  }
  [data-scroll-progress] .scroll-progress__bar { transform: none; opacity: 0.5; }
}