/* =========================================================
   NITA AI & GEOANALYTICS
   Theme Option 4: ClimateTech Premium
   Best for international climate-tech and water-resilience positioning

   Loaded only with ?theme=climatetech-premium.
========================================================= */

:root {
  --sky: #edf7f2;
  --sky-deep: #3d7c98;
  --water: #075f63;
  --water-deep: #075f63;
  --leaf: #1ca67a;
  --leaf-soft: rgba(28, 166, 122, 0.1);
  --mint: #edf7f2;
  --sand: #fbfcf8;
  --surface: #ffffff;
  --surface-blue: #e5f4f6;
  --text: #102426;
  --muted: #53696b;
  --line: #dbe8e3;
  --line-strong: rgba(28, 166, 122, 0.28);
  --accent: #1ca67a;
  --accent-2: #3d7c98;
  --warm: #d89b2b;
  --danger: #c24141;
  --shadow: 0 18px 48px rgba(16, 36, 38, 0.1);
  --shadow-card: 0 10px 26px rgba(16, 36, 38, 0.08);
  --glow: 0 22px 54px rgba(28, 166, 122, 0.14);
  --radius: 8px;
}

body {
  color: var(--text);
  background:
    radial-gradient(circle at 78% 4%, rgba(28, 166, 122, 0.13), transparent 31rem),
    radial-gradient(circle at 12% 12%, rgba(61, 124, 152, 0.11), transparent 29rem),
    linear-gradient(180deg, #fbfcf8 0%, #ffffff 34rem, #fbfcf8 100%);
  line-height: 1.68;
}

body::before {
  display: none;
}

.container {
  width: min(1180px, calc(100% - 2rem));
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(251, 252, 248, 0.88);
  backdrop-filter: blur(14px);
}

.nav-wrap {
  min-height: 78px;
}

.brand {
  color: var(--water);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  color: #ffffff;
  background: linear-gradient(135deg, #075f63 0%, #1ca67a 100%);
  box-shadow: var(--shadow-card);
}

.main-nav > a,
.nav-group > summary {
  border-color: transparent;
  color: var(--muted);
  background: transparent;
  font-weight: 750;
}

.main-nav > a:hover,
.nav-group > summary:hover {
  border-color: var(--line-strong);
  color: var(--leaf);
  background: rgba(28, 166, 122, 0.07);
}

.nav-menu {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
}

.nav-menu a,
.nav-tree a,
.nav-submenu small {
  color: var(--muted);
}

.nav-menu a:hover,
.nav-tree a:hover {
  color: var(--water);
  background: var(--mint);
}

.nav-submenu,
.platform-submenu {
  border-color: rgba(28, 166, 122, 0.16);
  background:
    radial-gradient(circle at 90% 10%, rgba(216, 155, 43, 0.1), transparent 7rem),
    rgba(237, 247, 242, 0.78);
}

.nav-submenu summary,
.nav-submenu summary:hover {
  color: var(--water);
  background:
    linear-gradient(90deg, rgba(7, 95, 99, 0.08), rgba(28, 166, 122, 0.07)),
    rgba(255, 255, 255, 0.72);
}

.nav-submenu span,
.nav-submenu summary::after,
.module-context-details summary::after {
  color: var(--leaf);
}

.nav-tree::before,
.nav-tree a::before {
  background: rgba(28, 166, 122, 0.26);
}

.nav-algorithm-strip span,
.registry-chip-cloud span,
.signal-strip span {
  border-color: var(--line-strong);
  color: var(--water);
  background: rgba(28, 166, 122, 0.07);
}

.cta,
.btn-primary {
  color: #ffffff;
  background: linear-gradient(135deg, #075f63 0%, #1ca67a 100%);
  box-shadow: var(--shadow-card);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--water);
  background: rgba(255, 255, 255, 0.72);
}

.btn:hover,
.cta:hover {
  transform: translateY(-2px);
}

h1 {
  max-width: 14ch;
  color: var(--text);
  font-size: clamp(2.35rem, 5vw, 4.9rem);
  line-height: 1.06;
  letter-spacing: -0.045em;
}

h2,
h3,
h4 {
  color: var(--text);
}

p {
  color: var(--muted);
}

.hero {
  position: relative;
  min-height: auto;
  padding: 7.5rem 0 6.6rem;
  background: linear-gradient(135deg, #fbfcf8 0%, #edf7f2 52%, #e5f4f6 100%);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: -140px;
  top: 20px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(28, 166, 122, 0.16), transparent 65%);
  pointer-events: none;
}

.hero-shell {
  position: relative;
  z-index: 1;
  grid-template-columns: minmax(0, 0.95fr) minmax(400px, 1.05fr);
  gap: 3rem;
}

.hero-copy p {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.18rem;
}

.hero-actions {
  gap: 1rem;
  margin-top: 2rem;
}

.geo-visual {
  min-height: 470px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background:
    radial-gradient(circle at 30% 40%, rgba(28, 166, 122, 0.22), transparent 24%),
    radial-gradient(circle at 68% 22%, rgba(216, 155, 43, 0.12), transparent 18%),
    linear-gradient(135deg, #edf7f2, #e5f4f6);
  box-shadow: var(--shadow);
}

.geo-visual::before {
  content: "";
  position: absolute;
  inset: 24px;
  z-index: 3;
  pointer-events: none;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(90deg, transparent 0 62%, rgba(255, 255, 255, 0.54) 62% 100%),
    linear-gradient(rgba(7, 95, 99, 0.065) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7, 95, 99, 0.065) 1px, transparent 1px);
  background-size: auto, 38px 38px, 38px 38px;
}

.geo-visual::after {
  content: "Climate resilience intelligence";
  position: absolute;
  left: 44px;
  top: 42px;
  z-index: 4;
  color: var(--water);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.sky-band {
  inset: 24px;
  border-radius: 24px;
  background:
    radial-gradient(circle at 24% 18%, rgba(255, 255, 255, 0.82), transparent 8rem),
    radial-gradient(circle at 76% 20%, rgba(28, 166, 122, 0.12), transparent 11rem),
    linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(237, 247, 242, 0.68));
}

.terrain-grid {
  z-index: 2;
  inset: 44% 10% 12%;
}

.terrain-grid span {
  border-color: rgba(7, 95, 99, 0.14);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(28, 166, 122, 0.12));
}

.river-line {
  z-index: 3;
  border-left-color: rgba(7, 95, 99, 0.72);
  border-bottom-color: rgba(28, 166, 122, 0.72);
  filter: drop-shadow(0 16px 18px rgba(7, 95, 99, 0.14));
}

.scan-orbit {
  z-index: 3;
  border-color: rgba(7, 95, 99, 0.2);
}

.station-dot {
  z-index: 4;
  background: #1ca67a;
  box-shadow: 0 0 0 8px rgba(28, 166, 122, 0.14);
}

.dot-two {
  background: var(--warm);
  box-shadow: 0 0 0 8px rgba(216, 155, 43, 0.13);
}

.section {
  padding: 5.875rem 0;
}

.domain-registry-hub,
.model-hub,
.algorithm-registry-section {
  background:
    radial-gradient(circle at 14% 10%, rgba(28, 166, 122, 0.08), transparent 22rem),
    radial-gradient(circle at 86% 18%, rgba(61, 124, 152, 0.1), transparent 26rem),
    #fbfcf8;
}

.domain-registry-card,
.registry-panel,
.model-card,
.module-context-card,
.tree-link,
.linked-module-strip,
.case-study-card,
.toolchain-card {
  border: 1px solid var(--line);
  color: var(--text);
  background: #ffffff;
  box-shadow: var(--shadow-card);
}

.domain-registry-card::after,
.registry-panel::after,
.model-card::after {
  background:
    radial-gradient(circle, rgba(28, 166, 122, 0.11), transparent 62%),
    radial-gradient(circle at 30% 30%, rgba(216, 155, 43, 0.1), transparent 58%);
}

.domain-registry-card:hover,
.model-card:hover,
.tree-link:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
}

.domain-registry-card h3,
.registry-panel h3,
.model-card strong,
.tree-link strong,
.tree-column h3,
.linked-module-strip h3 {
  color: var(--text);
}

.domain-registry-topline span,
.model-card span,
.tree-link span {
  color: #ffffff;
  background: linear-gradient(135deg, #075f63 0%, #1ca67a 100%);
  box-shadow: var(--shadow-card);
}

.domain-theme-urban .domain-registry-topline span,
.domain-theme-saas .domain-registry-topline span {
  background: linear-gradient(135deg, #075f63 0%, #d89b2b 100%);
}

.domain-registry-topline a,
.domain-module-links a,
.linked-module-grid a,
.model-card em {
  color: var(--water);
}

.domain-module-links a,
.linked-module-grid a,
.module-context-links a {
  border-color: var(--line);
  color: var(--water);
  background: rgba(237, 247, 242, 0.72);
}

.domain-module-links a:hover,
.linked-module-grid a:hover,
.module-context-links a:hover,
.module-context-links a.active {
  border-color: var(--line-strong);
  color: var(--text);
  background: #ffffff;
}

.model-card small,
.tree-link small,
.domain-registry-card p,
.registry-panel p,
.registry-list li {
  color: var(--muted);
}

.model-card-primary,
.module-context-current,
.registry-panel-primary,
.nature-band {
  color: #ffffff;
  border-color: transparent;
  background: linear-gradient(135deg, #075f63 0%, #0d2b2e 100%);
  box-shadow: var(--shadow);
}

.model-card-primary h3,
.model-card-primary strong,
.model-card-primary small,
.model-card-primary em,
.module-context-current span,
.module-context-current p,
.module-context-current h2,
.module-context-current a,
.nature-band p,
.nature-band h2,
.registry-panel-primary h3,
.registry-panel-primary p,
.registry-panel-primary .registry-list li {
  color: #ffffff;
}

.model-card-primary span {
  color: var(--water);
  background: #ffffff;
}

.nature-band {
  background: linear-gradient(135deg, #075f63 0%, #0d2b2e 58%, #1ca67a 100%);
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: #ffffff;
}

.visitor-counter strong {
  color: var(--leaf);
}

@media (max-width: 980px) {
  .hero {
    padding: 5.5rem 0 4.5rem;
  }

  .hero-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
  }

  .geo-visual {
    min-height: 380px;
  }
}

@media (max-width: 760px) {
  h1 {
    max-width: 100%;
    font-size: clamp(1.9rem, 9vw, 2.65rem);
    letter-spacing: -0.035em;
  }

  .hero {
    padding: 4rem 0 3.25rem;
  }

  .hero-copy p {
    max-width: 100%;
    font-size: 0.98rem;
    line-height: 1.55;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .geo-visual {
    width: 100%;
    min-height: 320px;
    border-radius: 24px;
  }

  .geo-visual::before,
  .sky-band {
    inset: 14px;
    border-radius: 18px;
  }

  .geo-visual::after {
    left: 28px;
    top: 26px;
  }
}