:root {
  /* Shared / Main */
  --it-navy: #102A43;
  --it-blue: #1769C2;
  --it-blue-light: #6FA8E6;
  --it-offwhite: #F3F5F4;
  --it-white: #FAFBFA;
  --it-text: #18324A;
  --it-muted: #5F7182;
  --it-border: rgba(16, 42, 67, 0.16);

  /* Engineering */
  --engineering-teal: #176B67;
  --engineering-teal-light: #5FA6A0;
  --engineering-gold: #D6A52F;
  --engineering-bg: #F1F3F1;

  /* Digital */
  --digital-blue: #2459C8;
  --digital-blue-light: #78A9E8;
  --digital-bg: #F1F4F7;

  /* Base / Shared mappings (Main page) */
  --header-bg: var(--it-navy);
  --header-text: var(--it-white);
  --header-border: var(--it-blue);
  --primary: var(--it-blue);
  --primary-dark: #12559e;
  --primary-light: rgba(23, 105, 194, 0.08);
  --accent: var(--it-blue);
  --accent-light: rgba(23, 105, 194, 0.08);
  --text: var(--it-text);
  --text-muted: var(--it-muted);
  --bg: var(--it-offwhite);
  --card-bg: var(--it-white);
  --border: var(--it-border);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

/* Digital Theme */
body.theme-digital {
  --primary: var(--digital-blue);
  --primary-dark: #1b449b;
  --primary-light: rgba(36, 89, 200, 0.08);
  --accent: var(--digital-blue-light);
  --accent-light: rgba(120, 169, 232, 0.14);
  --bg: var(--digital-bg);
  --card-bg: var(--it-white);
  --text: var(--it-text);
  --text-muted: var(--it-muted);
  --border: var(--it-border);
  --header-border: var(--digital-blue);
}

/* Engineering Theme */
body.theme-engineering {
  --primary: var(--engineering-teal);
  --primary-dark: #115350;
  --primary-light: rgba(23, 107, 103, 0.08);
  --accent: var(--engineering-gold);
  --accent-light: rgba(214, 165, 47, 0.12);
  --bg: var(--engineering-bg);
  --card-bg: var(--it-white);
  --text: var(--it-text);
  --text-muted: var(--it-muted);
  --border: var(--it-border);
  --header-border: var(--engineering-teal);
}

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

body {
  font-family: var(--font-sans);
  color: var(--text);
  background-color: var(--bg);
  background-image: radial-gradient(rgba(16, 42, 67, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  line-height: 1.6;
}

header {
  background-color: var(--header-bg);
  color: var(--header-text);
  padding: 1rem 0;
  border-bottom: 3px solid var(--header-border, var(--primary));
}

.header-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  flex-shrink: 0;
  order: 1;
}

.site-title span.tag {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: var(--primary);
  color: #fff;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

nav {
  order: 2;
  margin-left: auto;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

nav a {
  color: #c2d1e0;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.35rem 0.65rem;
  border-radius: 4px;
  transition: all 0.15s ease;
}

nav a:hover, nav a.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

/* Language Switcher */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.15rem 0.3rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.16);
  flex-shrink: 0;
  order: 3;
}

.lang-switch a {
  color: #9fb3c8;
  text-decoration: none;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  line-height: 1.2;
  font-size: 0.8rem;
  transition: all 0.15s ease;
}

.lang-switch a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
}

.lang-switch a.active {
  color: #fff;
  background: var(--primary);
}

.lang-switch-engineering a.active {
  background: var(--engineering-teal);
}

@media (max-width: 960px) {
  .site-title {
    order: 1;
  }

  .lang-switch {
    order: 2;
    margin-left: auto;
  }

  nav {
    order: 3;
    width: 100%;
    margin-left: 0;
  }
}

.container {
  max-width: 1100px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  min-height: calc(100vh - 260px);
}

.hero {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2.5rem;
  margin-bottom: 2rem;
  box-shadow: none;
}

.hero.hero-card {
  padding: 0;
  overflow: hidden;
}

.hero.hero-card .hero-media {
  border: none;
  border-radius: 0;
  border-bottom: 1px solid var(--border);
  background-color: transparent;
}

.hero.hero-card .hero-content {
  padding: 2.5rem;
}

.hero-media {
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border);
  background-color: var(--bg);
}

.hero-img {
  width: 100%;
  height: auto;
  aspect-ratio: 2048 / 768;
  object-fit: cover;
  display: block;
}

.hero h1 {
  font-size: 2.2rem;
  color: var(--text);
  margin-bottom: 1rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  line-height: 1.4;
  cursor: pointer;
}

.btn:hover {
  background: var(--primary-dark);
  color: #fff;
  text-decoration: none;
}

.btn-secondary {
  background: #243B53;
  color: #fff;
}

.btn-secondary:hover {
  background: var(--it-navy);
  color: #fff;
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}

.btn-accent:hover {
  filter: brightness(0.92);
  color: #fff;
}

.btn-engineering {
  background: var(--engineering-teal);
  color: #fff;
}

.btn-engineering:hover {
  background: #115350;
  color: #fff;
}

.btn-portal-digital {
  background: var(--digital-blue);
  color: #fff;
}

.btn-portal-digital:hover {
  background: #1b449b;
  color: #fff;
}

.btn-portal-engineering {
  background: var(--engineering-teal);
  color: #fff;
}

.btn-portal-engineering:hover {
  background: #115350;
  color: #fff;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: none;
  transition: border-color 0.2s ease;
}

.card:hover {
  border-color: rgba(16, 42, 67, 0.32);
}

.card h3, .card h4 {
  color: var(--text);
  margin-bottom: 0.75rem;
  font-size: 1.2rem;
  font-weight: 600;
}

.card p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  font-size: 0.95rem;
  line-height: 1.55;
}

.badge {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  border: 1px solid var(--border);
  align-self: flex-start;
}

.badge-accent {
  background: var(--accent-light);
  color: var(--accent);
  border-color: rgba(214, 165, 47, 0.35);
}

body.theme-engineering .badge-accent {
  background: rgba(214, 165, 47, 0.14);
  color: #8c6716;
  border-color: rgba(214, 165, 47, 0.35);
}

.badge-digital {
  background: rgba(36, 89, 200, 0.08);
  color: var(--digital-blue);
  border-color: rgba(36, 89, 200, 0.2);
}

.badge-engineering {
  background: rgba(23, 107, 103, 0.08);
  color: var(--engineering-teal);
  border-color: rgba(23, 107, 103, 0.2);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.tag-item {
  background: rgba(16, 42, 67, 0.05);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  font-size: 0.82rem;
  font-family: var(--font-mono);
}

.tag-item-accent {
  background: rgba(214, 165, 47, 0.12);
  color: #8c6716;
  border-color: rgba(214, 165, 47, 0.3);
}

.content-section {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2rem;
  margin-bottom: 2rem;
  position: relative;
}

.content-section h2 {
  color: var(--text);
  margin-bottom: 1rem;
  font-size: 1.45rem;
  font-weight: 700;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0.5rem;
  position: relative;
}

.content-section h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--primary);
}

.content-section h3 {
  color: var(--text);
  margin: 1.25rem 0 0.5rem;
  font-size: 1.2rem;
  font-weight: 600;
}

.content-section ul, .content-section ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

.content-section li {
  margin-bottom: 0.5rem;
  color: var(--text);
}

.content-section p {
  color: var(--text);
  margin-bottom: 1rem;
}

pre {
  background: #0d2137;
  color: #e2e8f0;
  padding: 1rem 1.2rem;
  border-radius: 4px;
  border: 1px solid rgba(16, 42, 67, 0.25);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 1rem 0;
}

code {
  font-family: var(--font-mono);
  background: var(--primary-light);
  color: var(--primary);
  padding: 0.15rem 0.35rem;
  border-radius: 3px;
  font-size: 0.85em;
  border: 1px solid var(--border);
}

pre code {
  background: transparent;
  color: inherit;
  padding: 0;
  border: none;
}

.breadcrumbs {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-family: var(--font-sans);
}

.breadcrumbs::before {
  content: "🞶";
  display: inline-block;
  margin-right: 0.1rem;
  font-size: 1em;
  color: var(--text-muted);
}

.breadcrumbs a {
  color: var(--primary);
  text-decoration: none;
}

.breadcrumbs a:hover {
  text-decoration: underline;
  color: var(--primary-dark);
}

.portal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.portal-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2.25rem;
  text-align: center;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.portal-card:hover {
  /*transform: translateY(-2px);*/
  border-color: var(--primary);
  box-shadow: 0px 0px 10px rgba(16, 42, 67, 0.18);
}

.portal-card.portal-digital:hover {
  border-color: var(--digital-blue);
}

.portal-card.portal-engineering:hover {
  border-color: var(--engineering-teal);
}

.portal-card.portal-card-blurred {
  position: relative;
  overflow: hidden;
  user-select: none;
}

.portal-card.portal-card-blurred:hover {
  border-color: var(--border);
  box-shadow: none;
}

.portal-card-blur-content {
  filter: blur(4px);
  opacity: 0.55;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.portal-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(243, 245, 244, 0.45);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  pointer-events: none;
  z-index: 2;
}

.portal-card-overlay-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--it-navy);
  background: var(--it-white);
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
  box-shadow: 0 4px 16px rgba(16, 42, 67, 0.15);
  border: 1px solid var(--it-border);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.portal-card h2 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.portal-card p {
  color: var(--text-muted);
  margin-bottom: 1.75rem;
  font-size: 1rem;
  line-height: 1.55;
}

footer {
  background: var(--it-navy);
  color: #829ab1;
  padding: 2.5rem 0 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.9rem;
}

.footer-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  color: var(--it-white);
  margin-bottom: 1rem;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  color: #bcccdc;
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-col a:hover {
  color: var(--it-white);
  text-decoration: underline;
}

.footer-col p {
  color: #829ab1;
  line-height: 1.5;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.5rem;
  color: #829ab1;
  font-size: 0.85rem;
}

/* Form Styles */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text);
  font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text);
  background-color: var(--it-white);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.form-checkbox input[type="checkbox"] {
  margin-top: 0.25rem;
  cursor: pointer;
  accent-color: var(--primary);
}

.form-message {
  padding: 0.85rem 1rem;
  border-radius: 4px;
  font-size: 0.95rem;
  margin-top: 1rem;
  line-height: 1.4;
}

.form-message-success {
  background-color: #e8f5e9;
  color: #1e5927;
  border: 1px solid #b7dfb9;
}

.form-message-error {
  background-color: #ffebee;
  color: #9c1c1c;
  border: 1px solid #f5b7b7;
}

/* ==========================================================================
   Scroll Reveal Animations
   ========================================================================== */

@keyframes scrollRevealFadeUp {
  0% {
    opacity: 0;
    transform: translateY(32px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal-on-scroll {
  opacity: 0;
}

.reveal-on-scroll.is-visible {
  animation: scrollRevealFadeUp 0.75s cubic-bezier(0.16, 1, 0.3, 1) both;
  will-change: opacity, transform;
}

/* Staggered delay for cards in grids */
.grid > .reveal-on-scroll:nth-child(1),
.portal-grid > .reveal-on-scroll:nth-child(1) {
  animation-delay: 0.05s;
}

.grid > .reveal-on-scroll:nth-child(2),
.portal-grid > .reveal-on-scroll:nth-child(2) {
  animation-delay: 0.15s;
}

.grid > .reveal-on-scroll:nth-child(3),
.portal-grid > .reveal-on-scroll:nth-child(3) {
  animation-delay: 0.25s;
}

.grid > .reveal-on-scroll:nth-child(4),
.portal-grid > .reveal-on-scroll:nth-child(4) {
  animation-delay: 0.35s;
}

.grid > .reveal-on-scroll:nth-child(5) {
  animation-delay: 0.45s;
}

.grid > .reveal-on-scroll:nth-child(6) {
  animation-delay: 0.55s;
}