html {
  scrollbar-gutter: stable;
}

/* GLOBAL */
body {
  margin: 0;
  font-family: system-ui, sans-serif;
  color: #f5f7ff;
  background: #02040a;
  min-height: 100vh;
  overflow-x: hidden;
}

/* BACKGROUND (uses your future background-stars.jpg) */
.background {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(80, 140, 255, 0.25), transparent 55%),
    radial-gradient(circle at 80% 80%, rgba(180, 80, 255, 0.25), transparent 55%),
    url("images/background-stars.jpg") center/cover no-repeat;
  z-index: -1;
  filter: brightness(0.9);
}

/* CENTER LAYOUT */
.center {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 24px;
}

/* CARD */
.card {
  max-width: 900px;
  width: 100%;
  background: rgba(10, 14, 28, 0.92);
  border-radius: 18px;
  padding: 36px 36px 28px;
  box-shadow:
    0 0 0 1px rgba(120, 160, 255, 0.25),
    0 26px 60px rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(14px);
}

/* HERO */
.header-block {
  text-align: center;
  margin-bottom: 32px;
}

.hero-image {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px 12px 12px 12px;
  clip-path: inset(0 0 10px 0 round 12px);
  margin-bottom: 20px;
  box-shadow: 0 0 22px rgba(0, 0, 0, 0.5);
}

.nav {
  margin-bottom: 20px;
}

.nav a {
  color: #a9b4ff;
  text-decoration: none;
  margin: 0 12px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.nav a:hover {
  color: #dfe6ff;
}

.nav a.active {
  color: #f5f7ff;
  border-bottom: 2px solid rgba(159, 180, 255, 0.9);
  padding-bottom: 3px;
}

.logo-main {
  font-size: 3rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0 0 6px;
  color: #dfe6ff;
  text-shadow: 0 0 12px #6a8cff;
}

.logo-subtitle {
  margin: 0;
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #a9b4ff;
}

/* CONTENT BLOCKS */
.block {
  margin-bottom: 32px;
  overflow: visible;
}

.block h2 {
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: #9fb4ff;
  margin: 0 0 12px;
}

.block p {
  margin: 0 0 10px;
  line-height: 1.6;
  color: #e3e7ff;
}

.block p:last-child {
  margin-bottom: 0;
}

/* SECTION IMAGES */
.section-image {
  width: 100%;
  max-height: 360px;
  object-fit: cover;
  display: block;
  border-radius: 12px;
  margin-bottom: 16px;
  box-shadow: 0 0 18px rgba(0, 0, 0, 0.4);
}

.home-section-image {
  max-height: 240px;
}

.home-mission-image {
  max-height: 190px;
  object-fit: cover;
}

.home-features-image {
  max-height: 440px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.04);
}

.book-gallery {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin: 12px 0 14px;
}

.book-thumb {
  width: 88px;
  height: 118px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid rgba(120, 160, 255, 0.35);
  box-shadow: 0 0 14px rgba(0, 0, 0, 0.35);
  background: rgba(255, 255, 255, 0.04);
}

.book-thumb-detail {
  object-position: top;
}

/* FEATURES */
.feature-list {
  margin: 0;
  padding-left: 1.2rem;
  line-height: 1.6;
  color: #e3e7ff;
}

/* CASE STUDIES */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.case-item {
  background: rgba(15, 22, 46, 0.95);
  border-radius: 10px;
  padding: 14px 16px;
  border: 1px solid rgba(120, 160, 255, 0.25);
}

.case-thumb {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 10px;
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 0 14px rgba(0, 0, 0, 0.3);
}

.case-item h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  color: #f5f7ff;
}

.case-item p {
  margin: 0;
  font-size: 0.85rem;
  color: #c7cffc;
}

/* FOOTER */
.footer {
  border-top: 1px solid rgba(120, 160, 255, 0.25);
  margin-top: 20px;
  padding-top: 12px;
  text-align: right;
}

.footer p {
  margin: 0;
  font-size: 0.8rem;
  color: #9aa3d0;
}

/* BREADCRUMB */
.breadcrumb {
  font-size: 0.8rem;
  color: #9aa3d0;
  margin-bottom: 20px;
}

.breadcrumb a {
  color: #a9b4ff;
  text-decoration: none;
}

.breadcrumb a:hover {
  color: #dfe6ff;
}

/* PAGE TITLE */
.page-title {
  font-size: 1.4rem;
  color: #dfe6ff;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin: 0 0 20px;
  border-bottom: 1px solid rgba(120, 160, 255, 0.2);
  padding-bottom: 10px;
}

/* BLOCK LINKS AND SUB-HEADINGS */
.block a {
  color: #a9b4ff;
  text-decoration: none;
}

.block a:hover {
  color: #dfe6ff;
}

.block h3 {
  font-size: 1rem;
  color: #dfe6ff;
  margin: 18px 0 6px;
}

.block ul {
  margin: 8px 0;
  padding-left: 1.4rem;
  line-height: 1.7;
  color: #e3e7ff;
}

/* LINK LIST (download index, etc.) */
.link-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
}

.link-list li a {
  color: #a9b4ff;
  text-decoration: none;
  display: block;
  padding: 7px 12px;
  border-radius: 6px;
  background: rgba(120, 160, 255, 0.06);
  border: 1px solid rgba(120, 160, 255, 0.15);
  font-size: 0.9rem;
}

.link-list li a:hover {
  background: rgba(120, 160, 255, 0.15);
  color: #dfe6ff;
}

/* DATA TABLE (download version tables) */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
  color: #eef2ff;
  margin-top: 12px;
  border: 1px solid rgba(120, 160, 255, 0.35);
  background: rgba(8, 12, 24, 0.8);
}

.data-table th {
  background: rgba(120, 160, 255, 0.15);
  color: #9fb4ff;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: 0.75rem;
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid rgba(120, 160, 255, 0.25);
}

.data-table td {
  padding: 9px 11px;
  border-bottom: 1px solid rgba(120, 160, 255, 0.22);
  vertical-align: top;
  color: #eef2ff;
}

.data-table tr:first-child td {
  background: rgba(66, 106, 208, 0.55);
  color: #f7f9ff;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.data-table tr:nth-child(odd) td {
  background: rgba(40, 56, 96, 0.45);
}

.data-table tr:nth-child(even) td {
  background: rgba(24, 36, 68, 0.45);
}

.data-table a {
  color: #c4d0ff;
  text-decoration: none;
  font-weight: 600;
}

.data-table a:hover {
  color: #ffffff;
}

.data-table ul {
  margin: 0;
  padding-left: 1.2rem;
  color: #e3e7ff;
}

/* Keep legacy table backgrounds neutral unless table is explicitly styled */
.block table:not(.data-table) tr td,
.block table:not(.data-table) td {
  background-color: transparent !important;
}

/* PROJECT GRID */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.project-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 14px 12px;
  background: rgba(15, 22, 46, 0.95);
  border-radius: 8px;
  border: 1px solid rgba(120, 160, 255, 0.2);
  text-align: center;
}

.project-item img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.project-item a {
  color: #a9b4ff;
  text-decoration: none;
  font-size: 0.85rem;
}

.project-item a:hover {
  color: #dfe6ff;
}

/* ORG LIST (list of organizations) */
.org-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.org-list li a {
  color: #a9b4ff;
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.6;
}

.org-list li a:hover {
  color: #dfe6ff;
}

/* SCREENSHOT GRID */
.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 12px;
}

.screenshot-item {
  text-align: center;
}

.screenshot-item img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid rgba(120, 160, 255, 0.25);
}

.screenshot-item a {
  display: block;
  color: #a9b4ff;
  text-decoration: none;
  margin-top: 6px;
  font-size: 0.85rem;
}

.screenshot-item a:hover {
  color: #dfe6ff;
}

/* SERVICES LIST */
.services-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.services-list li {
  padding: 8px 14px;
  background: rgba(120, 160, 255, 0.05);
  border-left: 2px solid rgba(120, 160, 255, 0.4);
  border-radius: 0 6px 6px 0;
  font-size: 0.9rem;
  color: #e3e7ff;
}

/* ADDRESS CARD */
.address-card {
  background: rgba(15, 22, 46, 0.95);
  border: 1px solid rgba(120, 160, 255, 0.2);
  border-radius: 8px;
  padding: 16px 20px;
  font-size: 0.9rem;
  line-height: 1.9;
  color: #e3e7ff;
  display: inline-block;
  min-width: 220px;
}

.address-card a {
  color: #a9b4ff;
}

.address-card a:hover {
  color: #dfe6ff;
}

/* CODE SNIPPET */
.code-snippet {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(120, 160, 255, 0.15);
  border-radius: 6px;
  padding: 10px 14px;
  font-family: monospace;
  font-size: 0.85rem;
  color: #c7cffc;
  margin: 10px 0;
}

/* RESPONSIVE */
@media (max-width: 720px) {
  .card {
    padding: 28px 20px 20px;
  }

  .logo-main {
    font-size: 2.4rem;
  }

  .case-grid {
    grid-template-columns: 1fr;
  }

  .screenshot-grid {
    grid-template-columns: 1fr;
  }

  .home-section-image {
    max-height: 200px;
  }

  .home-mission-image {
    max-height: 160px;
  }

  .home-features-image {
    max-height: 360px;
  }

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

  .link-list {
    grid-template-columns: 1fr;
  }
}