:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: rgba(148, 163, 184, 0.2);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #6ee7b7;
  --accent-dim: rgba(110, 231, 183, 0.15);
  --danger: #f87171;
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --portal-max: 960px;
  --portal-gap: 1rem;
}

body.portal-body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: portal-page-out 0.18s ease-out both;
}

::view-transition-new(root) {
  animation: portal-page-in 0.22s ease-out both;
}

@keyframes portal-page-out {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes portal-page-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.portal-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(15, 20, 25, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  isolation: isolate;
}

.portal-header-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.15s;
  box-shadow: 0 0 8px var(--accent);
}

.portal-header-progress.is-active {
  opacity: 1;
  animation: portal-progress 0.7s ease-in-out infinite;
}

@keyframes portal-progress {
  0% { width: 0; margin-left: 0; }
  50% { width: 65%; margin-left: 15%; }
  100% { width: 0; margin-left: 100%; }
}

.portal-header-inner {
  max-width: var(--portal-max);
  margin: 0 auto;
  padding: 0.85rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.portal-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.portal-brand:hover {
  color: var(--accent);
}

.portal-brand-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

.portal-nav-links {
  display: flex;
  gap: 0.25rem;
}

.portal-nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}

.portal-nav-links a:hover {
  color: var(--text);
  background: var(--accent-dim);
}

.portal-nav-links a.is-active {
  color: var(--accent);
  background: var(--accent-dim);
}

.portal-main {
  max-width: var(--portal-max);
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
  transition: opacity 0.15s ease;
}

.portal-main--entering {
  opacity: 0.4;
}

.portal-main--entered {
  animation: portal-main-in 0.25s ease-out both;
}

@keyframes portal-main-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.portal-hero {
  margin-bottom: 2rem;
  animation: portal-main-in 0.3s ease-out both;
}

.portal-hero h1 {
  margin: 0 0 0.35rem;
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.portal-hero p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  max-width: 36rem;
}

.portal-area-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--portal-gap);
  animation: portal-main-in 0.35s ease-out 0.05s both;
}

.portal-area-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, transform 0.15s;
}

.portal-area-card:hover {
  border-color: rgba(110, 231, 183, 0.45);
  transform: translateY(-2px);
}

.portal-area-card h2 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  color: var(--accent);
}

.portal-area-card p {
  margin: 0 0 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.portal-area-card .portal-cta {
  font-size: 0.8rem;
  color: var(--accent);
}

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

.portal-grid .portal-card:not(.portal-card--skeleton) {
  animation: portal-card-in 0.35s ease-out both;
}

.portal-grid .portal-card:not(.portal-card--skeleton):nth-child(2) {
  animation-delay: 0.06s;
}

.portal-grid .portal-card:not(.portal-card--skeleton):nth-child(3) {
  animation-delay: 0.12s;
}

@keyframes portal-card-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.portal-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s;
}

a.portal-card:hover {
  border-color: rgba(110, 231, 183, 0.45);
}

.portal-card.is-disabled {
  opacity: 0.65;
  cursor: default;
  pointer-events: none;
}

.portal-card--skeleton {
  pointer-events: none;
  overflow: hidden;
}

.portal-skeleton-line {
  height: 0.75rem;
  border-radius: 4px;
  background: linear-gradient(
    90deg,
    rgba(148, 163, 184, 0.08) 0%,
    rgba(148, 163, 184, 0.18) 50%,
    rgba(148, 163, 184, 0.08) 100%
  );
  background-size: 200% 100%;
  animation: portal-shimmer 1.2s ease-in-out infinite;
  margin-bottom: 0.55rem;
}

.portal-skeleton-line--title {
  width: 45%;
  height: 1rem;
}

.portal-skeleton-line--body {
  width: 90%;
}

.portal-skeleton-line--short {
  width: 35%;
  margin-bottom: 0;
}

@keyframes portal-shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

.portal-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.portal-card-head h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.portal-badge {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  white-space: nowrap;
}

.portal-badge--available {
  background: var(--accent-dim);
  color: var(--accent);
}

.portal-badge--coming_soon {
  background: rgba(148, 163, 184, 0.15);
  color: var(--muted);
}

.portal-card p {
  margin: 0 0 0.65rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.portal-card-meta {
  font-size: 0.75rem;
  color: var(--muted);
}

.portal-card-cta {
  font-size: 0.8rem;
  color: var(--accent);
  margin-top: 0.35rem;
}

.portal-main--tool {
  padding-top: 1rem;
}

.portal-main--tool .container {
  padding-top: 0;
}

@media (prefers-reduced-motion: reduce) {
  .portal-area-card:hover,
  a.portal-card:hover {
    transform: none;
  }

  ::view-transition-old(root),
  ::view-transition-new(root),
  .portal-main--entered,
  .portal-hero,
  .portal-area-grid,
  .portal-grid .portal-card {
    animation: none !important;
  }

  .portal-header-progress.is-active {
    animation: none;
    width: 100%;
    opacity: 0.5;
  }

  .portal-skeleton-line {
    animation: none;
  }
}