:root {
  color-scheme: light;
  --ink: #1a1a1a;
  --muted: #6b7280;
  --bg: #ffffff;
  --accent: #6f4cff;
  --accent-2: #e7e2ff;
  --ring: #b8a8ff;
  --panel-bg: #f6f4ff;
  --shadow-soft: 0 12px 32px rgba(111, 76, 255, 0.12);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell;
}

.auto-nav {
  padding: 0.75rem clamp(1.5rem, 5vw, 6rem);
  background: #fff;
  border-bottom: 1px solid rgba(26, 26, 26, 0.08);
}

.auto-nav #main-nav {
  list-style: none;
  display: flex;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
}

.auto-nav #main-nav a {
  font-weight: 600;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

.skip-link {
  position: fixed;
  top: -40px;
  left: 1rem;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: #fff;
  border-radius: 0.75rem;
  z-index: 1200;
  transition: top 0.2s ease;
  box-shadow: 0 12px 32px rgba(111, 76, 255, 0.25);
}

.skip-link:focus {
  top: 1rem;
}

.skip-link-inline {
  padding: 1rem clamp(1.5rem, 5vw, 6rem) 0;
}

.skip-link-inline__button {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  background: rgba(111, 76, 255, 0.12);
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(111, 76, 255, 0.18);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.skip-link-inline__button:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 32px rgba(111, 76, 255, 0.22);
}

.skip-link-inline__button:focus-visible {
  transform: translateY(-1px);
  outline: 3px solid transparent;
  box-shadow: 0 0 0 3px var(--ring), 0 16px 32px rgba(111, 76, 255, 0.22);
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  padding: 4rem clamp(1.5rem, 5vw, 6rem);
  background: linear-gradient(135deg, #f9f8ff 0%, #f3f1ff 100%);
}

.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.1;
}

.hero__subhead {
  font-size: 1.05rem;
  max-width: 40ch;
  margin-bottom: 2rem;
  color: var(--muted);
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  font-weight: 600;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hero__cta:hover,
.hero__cta:focus {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(111, 76, 255, 0.25);
}

.hero__visual svg {
  width: 100%;
  max-width: 360px;
  height: auto;
  filter: drop-shadow(0 24px 48px rgba(111, 76, 255, 0.15));
}

.section-heading h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0;
}

.legacy-future {
  padding: clamp(2rem, 5vw, 3.5rem) clamp(1.5rem, 5vw, 6rem);
  display: grid;
  gap: 1.5rem;
  background: #fff;
}

.legacy-toggle {
  display: inline-flex;
  background: rgba(111, 76, 255, 0.08);
  border-radius: 999px;
  padding: 0.35rem;
  width: fit-content;
}

.legacy-toggle__button {
  border: none;
  background: transparent;
  color: var(--muted);
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.legacy-toggle__button[aria-pressed="true"] {
  background: #fff;
  color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(111, 76, 255, 0.15);
}

.legacy-toggle__button:focus-visible {
  outline: 3px solid transparent;
  box-shadow: 0 0 0 3px var(--ring);
}

.split-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.split-panel__column {
  background: var(--panel-bg);
  border-radius: 1.5rem;
  padding: 1.75rem;
  box-shadow: var(--shadow-soft);
}

.split-panel__column h3 {
  margin-top: 0;
}

.list-icon {
  margin-right: 0.5rem;
}

.legacy-future[data-view="legacy"] .split-panel__column--future,
.legacy-future[data-view="future"] .split-panel__column--legacy {
  display: none;
}

.legacy-future[data-view="legacy"] .split-panel__column--legacy,
.legacy-future[data-view="future"] .split-panel__column--future {
  background: var(--accent-2);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem clamp(1.5rem, 5vw, 6rem);
  border-top: 1px solid rgba(106, 115, 125, 0.15);
  border-bottom: 1px solid rgba(106, 115, 125, 0.15);
  background: #fff;
}

.toolbar__search input {
  padding: 0.75rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(26, 26, 26, 0.1);
  min-width: min(320px, 80vw);
  background: #fff;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

.toolbar__search input:focus {
  outline: 3px solid transparent;
  box-shadow: 0 0 0 3px var(--ring);
}

.toolbar__actions {
  display: flex;
  gap: 0.75rem;
}

.toolbar__button {
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  border: none;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.toolbar__button[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
}

.toolbar__button:hover:not([aria-disabled="true"]),
.toolbar__button:focus-visible:not([aria-disabled="true"]) {
  background: #5c3ae6;
  transform: translateY(-1px);
}

.legend {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-left: auto;
}

.legend__item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-2);
  color: var(--ink);
  font-size: 0.85rem;
}

.legend__swatch {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 999px;
}

.architecture-section {
  padding: 2rem clamp(1.5rem, 5vw, 6rem) 0;
}

.architecture-section p {
  max-width: 60ch;
  margin: 0 0 1rem;
  color: var(--muted);
}

.architecture-section ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.architecture-section li {
  background: #fff;
  border-radius: 1rem;
  padding: 1.1rem 1.25rem;
  box-shadow: var(--shadow-soft);
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.35;
  color: var(--ink);
}

.architecture-map {
  padding: 2rem clamp(1.5rem, 5vw, 6rem) clamp(4rem, 10vw, 6rem);
}

.map-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 2rem;
  align-items: start;
}

.diagram-container {
  position: relative;
  background: #fff;
  border-radius: 2rem;
  box-shadow: var(--shadow-soft);
  padding: 1.5rem;
  overflow: hidden;
}

#architecture-map {
  width: 100%;
  height: clamp(420px, 70vw, 720px);
  display: block;
}

.arch-node {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  width: 100%;
  height: 100%;
  padding: 0.85rem 1.1rem;
  border-radius: 1rem;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-soft);
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  line-height: 1.3;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.arch-node:focus-visible {
  outline: 3px solid transparent;
  border-color: var(--ring);
  box-shadow: 0 0 0 3px rgba(111, 76, 255, 0.25), var(--shadow-soft);
}

.arch-node:hover {
  transform: translateY(-4px);
}

.arch-node[data-active="true"] {
  background: var(--accent-2);
  border-color: var(--accent);
  box-shadow: 0 16px 40px rgba(111, 76, 255, 0.22);
}

.arch-node.highlight {
  box-shadow: 0 0 0 3px rgba(111, 76, 255, 0.45), var(--shadow-soft);
}

.arch-node[data-dim="true"] {
  opacity: 0.3;
}

.node-title {
  font-weight: 700;
  margin-bottom: 0.35rem;
  font-size: clamp(1rem, 0.96rem + 0.3vw, 1.18rem);
  line-height: 1.3;
}

.node-category {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

#tooltip {
  position: absolute;
  pointer-events: none;
  background: #1a1a1a;
  color: #fff;
  padding: 0.35rem 0.6rem;
  border-radius: 0.5rem;
  font-size: 0.75rem;
  transform: translate(-50%, -120%);
  white-space: nowrap;
  z-index: 10;
}

.side-panel {
  position: sticky;
  top: 1.5rem;
  background: #fff;
  border-radius: 1.5rem;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  display: none;
  flex-direction: column;
  max-height: calc(100vh - 3rem);
}

.side-panel[data-open="true"] {
  display: flex;
}

.side-panel[hidden] {
  display: none !important;
}

.side-panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(26, 26, 26, 0.08);
}

.side-panel__body {
  padding: 1.5rem;
  overflow-y: auto;
}

.panel-subheading {
  margin: 1.25rem 0 0.5rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.panel-impact {
  margin-top: 1.5rem;
  font-weight: 500;
}

.side-panel__close {
  border: none;
  background: transparent;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--muted);
}

.side-panel__close:focus-visible {
  outline: 3px solid transparent;
  box-shadow: 0 0 0 3px var(--ring);
  border-radius: 999px;
}

.side-panel ul {
  padding-left: 1.25rem;
}

.side-panel ul li {
  margin-bottom: 0.35rem;
}

.site-footer {
  padding: 3rem 1.5rem 4rem;
  text-align: center;
  color: var(--muted);
  background: linear-gradient(180deg, rgba(111, 76, 255, 0.08) 0%, rgba(111, 76, 255, 0) 100%);
}

.site-footer strong {
  color: var(--ink);
}

.site-footer .footer-reference-note {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--ink);
}

.prototype-disclaimer {
  margin: 0;
  padding: 3rem clamp(1.5rem, 5vw, 6rem) 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.prototype-disclaimer p {
  margin: 0;
  background: rgba(111, 76, 255, 0.08);
  border-radius: 1rem;
  padding: 1.5rem 2rem;
  color: var(--ink);
  box-shadow: inset 0 0 0 1px rgba(111, 76, 255, 0.15);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 1024px) {
  .map-layout {
    grid-template-columns: 1fr;
  }

  .side-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 70vh;
    border-radius: 24px 24px 0 0;
    transition: transform 0.3s ease;
    transform: translateY(100%);
  }

  .side-panel[data-open="true"] {
    transform: translateY(0);
  }

  .diagram-container {
    padding-bottom: 6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}