/**
 * Sekaira Nexus — immersive visual components
 * Portals and atmosphere are scoped to sections (never fixed over scrollable content).
 */

/* —— Scene sections —— */
.nexus-page {
  --scene-pad: clamp(1.25rem, 4vw, 2.5rem);
}

.section-scene {
  position: relative;
  overflow: hidden;
  margin: 0 calc(50% - 50vw);
  padding: 3.5rem var(--scene-pad);
  background: linear-gradient(180deg, rgba(5, 6, 12, 0.92) 0%, rgba(3, 4, 10, 0.98) 100%);
}

.section-scene__content {
  position: relative;
  z-index: 2;
  width: min(var(--shell), 100%);
  margin-inline: auto;
}

.section-head--center {
  text-align: center;
  max-width: 40rem;
  margin-inline: auto;
  margin-bottom: 2rem;
}

/* —— Layered backgrounds (per section) —— */
.nexus-layers {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.nexus-layers__space {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #060812 0%, #03040a 100%);
}

.nexus-layers__stars {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(238, 241, 255, 0.5), transparent),
    radial-gradient(1px 1px at 30% 60%, rgba(46, 200, 255, 0.35), transparent),
    radial-gradient(1px 1px at 70% 15%, rgba(216, 76, 255, 0.3), transparent),
    radial-gradient(1px 1px at 85% 70%, rgba(238, 241, 255, 0.35), transparent);
  opacity: 0.6;
  animation: starTwinkle 8s ease-in-out infinite;
}

.nexus-layers__nebula {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 45% at 20% 30%, rgba(46, 200, 255, 0.12), transparent 70%),
    radial-gradient(ellipse 50% 40% at 85% 60%, rgba(216, 76, 255, 0.1), transparent 68%);
}

.nexus-layers__fog {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(5, 6, 12, 0.85) 100%);
}

.nexus-layers--hero .nexus-layers__nebula {
  background:
    radial-gradient(ellipse 60% 50% at 50% 40%, rgba(46, 200, 255, 0.16), transparent 65%),
    radial-gradient(ellipse 45% 40% at 80% 55%, rgba(216, 76, 255, 0.14), transparent 60%);
}

/* —— Glass panels (tokens in app.css) —— */
.glass-panel {
  border-radius: var(--sekaira-radius-lg);
}

/* —— Hero —— */
.nexus-search {
  display: grid;
  grid-template-columns: minmax(130px, 160px) 1fr auto;
  gap: 0.45rem;
  padding: 0.65rem;
  max-width: 36rem;
}

.nexus-search select,
.nexus-search input {
  padding: 0.75rem 0.85rem;
  border-radius: var(--sekaira-radius);
  border: 1px solid var(--sekaira-line);
  background: rgba(4, 8, 18, 0.85);
  color: var(--sekaira-text);
  font: inherit;
}

.nexus-search button {
  padding: 0.75rem 1.1rem;
  border: 0;
  border-radius: var(--sekaira-radius);
  background: var(--sekaira-gradient);
  color: var(--sekaira-bg);
  font-weight: 700;
  cursor: pointer;
}

/* Hero search — no panel/box; floats in the nexus */
.nexus-search--ethereal {
  background: none;
  border: 0;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  padding: 0;
}

.nexus-search--ethereal select,
.nexus-search--ethereal input {
  background: rgba(4, 8, 18, 0.42);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
}

.nexus-search--ethereal button {
  box-shadow: 0 4px 20px rgba(46, 200, 255, 0.25);
}

/* —— Discover carousel —— */
.nexus-discover__stage {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.75rem;
  max-width: 480px;
  margin-inline: auto;
}

.nexus-discover__viewport {
  position: relative;
  min-height: 380px;
}

.nexus-discover__slide {
  display: none;
}

.nexus-discover__slide.is-active {
  display: block;
  animation: riseIn 0.45s ease both;
}

.nexus-discover__nav {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1px solid var(--sekaira-line);
  background: var(--sekaira-surface);
  color: var(--sekaira-text);
  cursor: pointer;
  font-size: 1.1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.nexus-discover__nav:hover {
  border-color: rgba(46, 200, 255, 0.45);
  box-shadow: var(--sekaira-glow-sm);
}

.nexus-discover__dots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.45rem;
  margin-top: 1.25rem;
}

.nexus-discover__dots button {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--sekaira-line);
  background: transparent;
  color: var(--sekaira-muted);
  font-size: 0.78rem;
  cursor: pointer;
}

.nexus-discover__dots button[aria-selected="true"] {
  border-color: rgba(46, 200, 255, 0.5);
  color: var(--sekaira-text);
  background: rgba(46, 200, 255, 0.1);
}

/* —— Featured world hero —— */
.world-hero {
  position: relative;
  overflow: hidden;
  min-height: 280px;
  display: grid;
  align-items: end;
}

.world-hero__art {
  position: absolute;
  inset: 0;
  background-image: var(--world-art);
  background-size: cover;
  background-position: center;
  opacity: 0.45;
}

.world-hero__portal-ring {
  position: absolute;
  right: 5%;
  top: 10%;
  width: 140px;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(46, 200, 255, 0.35);
  animation: nexusSpin 14s linear infinite;
  pointer-events: none;
}

.world-hero__body {
  position: relative;
  z-index: 2;
  padding: 1.5rem;
}

.world-hero__eyebrow {
  margin: 0 0 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--sekaira-cyan);
}

.world-hero h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.world-hero__meta {
  margin: 0 0 1rem;
  color: var(--sekaira-muted);
}

.world-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.nexus-featured__orbit-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.65rem;
  margin-top: 1rem;
}

.world-chip {
  padding: 0.85rem 1rem;
  text-decoration: none;
  color: inherit;
  display: grid;
  gap: 0.2rem;
  border-radius: var(--sekaira-radius-lg);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.world-chip:hover {
  transform: translateY(-2px);
  box-shadow: var(--sekaira-glow-sm);
}

.world-chip span {
  color: var(--sekaira-muted);
  font-size: 0.85rem;
}

/* —— New world rifts (layout in world-gates.css) —— */
.nexus-rifts__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.85rem;
}

.rift-card {
  text-decoration: none;
  color: inherit;
  border-radius: var(--sekaira-radius-lg);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.rift-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sekaira-glow-sm);
}

/* —— Animations (nexus-specific) —— */
@keyframes nexusSpin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes nexusSpinReverse {
  from { transform: translate(-50%, -50%) rotate(360deg); }
  to { transform: translate(-50%, -50%) rotate(0deg); }
}

/* —— Responsive —— */
@media (max-width: 900px) {
  .nexus-search {
    grid-template-columns: 1fr;
  }

  .nexus-discover__stage {
    grid-template-columns: 1fr;
  }

  .nexus-discover__nav {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .world-gate__particles,
  .world-gate__distort,
  .world-gate__spill,
  .nexus-hero__hub-ring,
  .world-hero__portal-ring,
  .rift-card__portal {
    animation: none !important;
  }
}

.section-head__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.section-head__link,
.section-head__link-wrap a {
  color: #7cc4ff;
  font-size: 0.92rem;
  text-decoration: none;
}

.review-rail {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.review-rail-card {
  display: block;
  padding: 1rem 1.1rem;
  text-decoration: none;
  color: inherit;
}

.review-rail-card__rating {
  display: inline-block;
  margin-bottom: 0.35rem;
  color: #ffd166;
  font-weight: 600;
}

.review-rail-card__meta {
  display: block;
  color: rgba(200, 210, 240, 0.72);
  font-size: 0.88rem;
  margin: 0.25rem 0 0.5rem;
}

.review-rail-card p {
  margin: 0;
  color: rgba(220, 228, 255, 0.82);
  font-size: 0.92rem;
  line-height: 1.45;
}

.servers-browse-filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  padding: 1rem;
  align-items: end;
}

.servers-browse-filters label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.servers-browse-filters input,
.servers-browse-filters select {
  width: 100%;
}