/* Hallmark · pre-emit critique: P5 H5 E4 S5 R5 V5
 * Hallmark · genre: modern-minimal · macrostructure: Map / Diagram · theme: Signal Blue · tone: utilitarian technical · enrichment: Tier-B inline SVG system map · nav: N8 · footer: Ft4
 * audience: server devs, SREs, tinkerers, builders · use: read docs · anchor hue: signal-blue
 */
@import url("../tokens.css");

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  overflow-x: clip;
}

body {
  background:
    radial-gradient(circle at 12% 6%, var(--color-accent-soft), transparent 34rem),
    radial-gradient(circle at 90% 0%, color-mix(in oklch, var(--color-accent-2), transparent 66%), transparent 30rem),
    var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.45;
}

a {
  color: inherit;
}

.page {
  width: min(100%, 82.5rem);
  margin-inline: auto;
  padding-inline: clamp(var(--space-lg), 5vw, 4.25rem);
}

.nav-term {
  position: sticky;
  top: 0;
  z-index: 20;
  border-block-end: var(--rule-hair) solid var(--color-line);
  background: color-mix(in oklch, var(--color-paper), transparent 12%);
  backdrop-filter: blur(18px);
}

.nav-term__inner {
  width: min(100%, 82.5rem);
  margin-inline: auto;
  padding: var(--space-sm) clamp(var(--space-lg), 5vw, 4.25rem);
}

.nav-term__line {
  display: flex;
  gap: var(--space-xs);
  align-items: center;
  min-width: 0;
  margin: 0;
  overflow: auto clip;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  white-space: nowrap;
  scrollbar-width: none;
}

.nav-term__line::-webkit-scrollbar {
  display: none;
}

.prompt,
.caret {
  color: var(--color-accent);
}

.caret {
  display: inline-block;
  width: 1ch;
  animation: blink 1.05s steps(2) infinite;
}

.nav-term a,
.terminal-link {
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  text-decoration-color: var(--color-line-strong);
  text-decoration-thickness: var(--rule-hair);
  text-underline-offset: 0.24em;
  transition: color var(--dur-short) var(--ease-out), text-decoration-color var(--dur-short) var(--ease-out);
  white-space: nowrap;
}

.nav-term a:hover,
.terminal-link:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

.nav-term a:active,
.terminal-link:active,
.node-link:active,
.doc-row:active {
  transform: translateY(1px);
}

.nav-term a:focus-visible,
.terminal-link:focus-visible,
.button:focus-visible,
.node-link:focus-visible,
.doc-row:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
}

a[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.55;
  pointer-events: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(17.5rem, 0.85fr);
  gap: clamp(var(--space-lg), 5vw, 4.5rem);
  align-items: end;
  padding-block: var(--space-lg) var(--space-3xl);
}

.hero > *,
.map__header > *,
.work-area > *,
.doc-grid > *,
.faq > *,
.final-cta > * {
  min-width: 0;
}

.hero__kicker {
  display: block;
  margin-block-end: var(--space-lg);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  overflow-wrap: anywhere;
}

h1,
h2,
h3,
p {
  margin-block-start: 0;
}

h1,
h2,
h3 {
  min-width: 0;
  overflow-wrap: anywhere;
}

h1 {
  max-width: 9.8ch;
  margin-block: 1.625rem var(--space-lg);
  font-family: var(--font-display);
  font-size: clamp(3.625rem, 11vw, 9.875rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.78;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.lead {
  max-width: 48rem;
  margin-block-end: 0;
  color: color-mix(in oklch, var(--color-ink), var(--color-muted) 34%);
  font-family: var(--font-serif);
  font-size: clamp(1.1875rem, 2vw, 1.75rem);
  line-height: 1.35;
}

.hero__aside {
  display: grid;
  gap: 0.8125rem;
  border: var(--rule-hair) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-glass);
  box-shadow: var(--shadow-panel);
  padding: var(--space-xl);
  backdrop-filter: blur(18px);
}

.hero__aside b {
  font-family: var(--font-display);
  font-size: 2.125rem;
  letter-spacing: -0.03em;
  line-height: 0.9;
  text-transform: uppercase;
}

.hero__aside span {
  color: var(--color-muted);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-block-start: var(--space-xl);
}

.button {
  display: inline-flex;
  min-height: 2.875rem;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 0.875rem;
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font-weight: 700;
  padding: var(--space-sm) var(--space-lg);
  box-shadow: 0 10px 24px color-mix(in oklch, var(--color-accent), transparent 72%);
  text-decoration: none;
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out), transform 100ms var(--ease-out);
  white-space: nowrap;
}

.button:hover {
  background: var(--color-ink);
  color: var(--color-accent-ink);
}

.button:active {
  transform: translateY(1px);
}

.button[aria-disabled="true"],
.button.is-disabled {
  cursor: not-allowed;
  opacity: 0.55;
  pointer-events: none;
}

.button--secondary {
  border: var(--rule-hair) solid var(--color-line);
  background: color-mix(in oklch, var(--color-panel), var(--color-line) 40%);
  color: var(--color-ink);
  box-shadow: none;
}

.button--secondary:hover {
  background: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-panel);
}

.map {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-lg);
  padding-block: 0 var(--space-3xl);
}

.map__header {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(14rem, 0.28fr);
  gap: var(--space-xl);
  align-items: end;
}

.map__header h2 {
  margin-block-end: 0;
  font-family: var(--font-display);
  font-size: clamp(2.625rem, 7vw, 5.5rem);
  letter-spacing: -0.04em;
  line-height: 0.82;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.map__header p {
  margin-block-end: 0;
  color: var(--color-muted);
}

.signal-map {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-height: clamp(41rem, 78vw, 50rem);
  border: var(--rule-hair) solid var(--color-line-strong);
  border-radius: 2.125rem;
  background:
    linear-gradient(135deg, var(--color-signal-grid) 1px, transparent 1px) 0 0 / 1.75rem 1.75rem,
    var(--color-panel);
  box-shadow: var(--shadow-panel);
  overflow: clip;
}

.route-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.route-svg path {
  fill: none;
  stroke: var(--color-line-strong);
  stroke-width: 2;
  stroke-dasharray: 8 10;
  vector-effect: non-scaling-stroke;
}

.route-svg .route-hot {
  stroke: var(--color-accent);
  stroke-dasharray: 0;
  opacity: 0.86;
}

.map-node {
  position: absolute;
  display: grid;
  width: min(18.5rem, calc(100% - var(--space-xl)));
  gap: var(--space-sm);
  border: var(--rule-hair) solid var(--color-line-strong);
  border-radius: var(--radius-lg);
  background: color-mix(in oklch, var(--color-panel), var(--color-paper) 28%);
  box-shadow: 0 18px 45px var(--color-shadow);
  padding: var(--space-lg);
}

.map-node:nth-of-type(1) {
  inset-block-start: 8%;
  inset-inline-start: 5%;
}

.map-node:nth-of-type(2) {
  inset-block-start: 20%;
  inset-inline-end: 11%;
}

.map-node:nth-of-type(3) {
  inset-block-start: 48%;
  inset-inline-start: 16%;
}

.map-node:nth-of-type(4) {
  inset-block-end: 10%;
  inset-inline-end: 6%;
}

.node-tag {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.node-tag::before {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: var(--radius-pill);
  background: var(--color-good);
  box-shadow: 0 0 0 0.25rem var(--color-good-soft);
  content: "";
}

.map-node h3 {
  margin-block-end: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.625rem);
  letter-spacing: -0.035em;
  line-height: 0.84;
  text-transform: uppercase;
}

.map-node p {
  margin-block-end: 0;
  color: var(--color-muted);
}

.node-link {
  justify-self: start;
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  text-decoration-thickness: var(--rule-hair);
  text-underline-offset: 0.24em;
  transition: color var(--dur-short) var(--ease-out), text-decoration-color var(--dur-short) var(--ease-out);
  white-space: nowrap;
}

.node-link:hover {
  color: var(--color-ink);
}

.legend {
  align-self: end;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, max-content));
  gap: var(--space-sm);
  padding: var(--space-md);
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  white-space: nowrap;
}

.legend i {
  display: inline-block;
  width: 1rem;
  height: 0.45rem;
  border-block-start: 2px solid var(--color-line-strong);
}

.legend .ble {
  border-block-start-style: dashed;
}

.legend .radio {
  border-block-start-color: var(--color-accent);
}

.legend .usb {
  border-block-start-style: double;
}

.work-area {
  display: grid;
  grid-template-columns: minmax(0, 0.48fr) minmax(0, 0.52fr);
  gap: clamp(var(--space-lg), 5vw, var(--space-3xl));
  padding-block: var(--space-3xl);
  border-block-start: 0;
}

.stage {
  display: grid;
  gap: var(--space-lg);
}

.stage h2 {
  max-width: 13ch;
  margin-block-end: 0;
  font-family: var(--font-display);
  font-size: clamp(2.625rem, 7vw, 5.5rem);
  letter-spacing: -0.04em;
  line-height: 0.82;
  text-transform: uppercase;
}

.stage p {
  max-width: 54ch;
  color: var(--color-muted);
}

.status-stack {
  display: grid;
  align-content: start;
  gap: var(--space-sm);
}

.status-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  border: var(--rule-hair) solid var(--color-line-strong);
  border-radius: var(--radius-pill);
  background: color-mix(in oklch, var(--color-panel), var(--color-line) 25%);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.status-pill small {
  color: var(--color-muted);
}

.lamp {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: var(--radius-pill);
  background: var(--color-good);
}

.lamp--warn {
  background: var(--color-warn);
}

.lamp--bad {
  background: var(--color-bad);
}

.key-stage {
  display: grid;
  min-height: 22rem;
  align-content: space-between;
  border: var(--rule-hair) solid var(--color-line-strong);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle, color-mix(in oklch, var(--color-accent), transparent 82%) 0 2px, transparent 3px) 1rem 1rem / 1.625rem 1.625rem,
    var(--color-panel);
  box-shadow: var(--shadow-panel);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.key-stage__top,
.key-stage__bottom {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.key-stage__glyph {
  justify-self: center;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: clamp(5rem, 21vw, 12rem);
  font-weight: 700;
  line-height: 0.8;
  letter-spacing: -0.06em;
  text-shadow: 0 18px 40px color-mix(in oklch, var(--color-accent), transparent 75%);
}

.doc-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.64fr) minmax(0, 0.36fr);
  gap: clamp(var(--space-lg), 4vw, var(--space-2xl));
  padding-block: var(--space-3xl);
  border-block-start: var(--rule-hair) solid var(--color-line);
}

.doc-grid h2,
.faq h2,
.final-cta h2 {
  font-family: var(--font-display);
  letter-spacing: -0.04em;
  line-height: 0.84;
  text-transform: uppercase;
}

.doc-list {
  display: grid;
  gap: var(--space-xs);
}

.doc-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-md);
  align-items: center;
  border: var(--rule-hair) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-glass);
  padding: var(--space-lg);
  text-decoration: none;
  backdrop-filter: blur(18px);
}

.doc-row strong {
  display: block;
  font-size: var(--text-md);
}

.doc-row span {
  color: var(--color-muted);
}

.doc-row code {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  white-space: nowrap;
}

.doc-row:hover strong {
  color: var(--color-accent);
}

.doc-row:active strong {
  color: var(--color-ink);
}

.note-panel {
  align-self: start;
  border: var(--rule-hair) solid var(--color-line-strong);
  border-radius: var(--radius-lg);
  background: var(--color-glass);
  box-shadow: var(--shadow-panel);
  padding: var(--space-xl);
  backdrop-filter: blur(18px);
}

.note-panel h2 {
  margin-block-end: var(--space-md);
  font-family: var(--font-display);
  font-size: 2.125rem;
  letter-spacing: -0.03em;
  line-height: 0.9;
  text-transform: uppercase;
}

.note-panel ul {
  display: grid;
  gap: var(--space-sm);
  margin: 0;
  padding: 0;
  list-style: none;
}

.note-panel li {
  display: grid;
  grid-template-columns: 1.2rem minmax(0, 1fr);
  gap: var(--space-xs);
  color: var(--color-muted);
}

.note-panel li::before {
  color: var(--color-accent);
  content: ">";
  font-family: var(--font-mono);
}

.faq {
  display: grid;
  grid-template-columns: minmax(0, 0.35fr) minmax(0, 0.65fr);
  gap: clamp(var(--space-lg), 5vw, var(--space-3xl));
  padding-block: var(--space-2xl) var(--space-3xl);
  border-block-start: var(--rule-hair) solid var(--color-line);
}

.faq h2 {
  margin-block-end: 0;
  font-size: clamp(2.125rem, 5vw, 3.625rem);
}

.faq__items {
  display: grid;
  gap: var(--space-xs);
}

details {
  border-block-end: var(--rule-hair) solid var(--color-line);
  padding-block: var(--space-md);
}

summary {
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

details p {
  max-width: 68ch;
  margin-block: var(--space-sm) 0;
  color: var(--color-muted);
}

.final-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-lg);
  align-items: center;
  padding-block: var(--space-2xl);
  border-block-start: var(--rule-hair) solid var(--color-line-strong);
}

.final-cta h2 {
  margin-block-end: var(--space-sm);
  font-size: clamp(2.125rem, 5vw, 3.625rem);
}

.final-cta p {
  max-width: 62ch;
  margin-block-end: 0;
  color: var(--color-muted);
}

.foot-dense {
  border-block-start: var(--rule-hair) solid var(--color-line);
  padding-block: var(--space-xl);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.foot-dense p {
  max-width: 75ch;
  margin-block-end: 0;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@media (min-width: 60rem) {
  .map-node {
    animation: node-ink var(--dur-long) var(--ease-out) both;
    animation-delay: calc(var(--node-index, 0) * 80ms);
  }

  .map-node:nth-of-type(1) {
    --node-index: 1;
  }

  .map-node:nth-of-type(2) {
    --node-index: 2;
  }

  .map-node:nth-of-type(3) {
    --node-index: 3;
  }

  .map-node:nth-of-type(4) {
    --node-index: 4;
  }
}

@keyframes node-ink {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 59.99rem) {
  .hero,
  .map__header,
  .work-area,
  .doc-grid,
  .faq,
  .final-cta {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__aside {
    border-block-start: var(--rule-hair) solid var(--color-line-strong);
    padding: var(--space-lg);
  }

  .signal-map {
    min-height: 0;
    gap: var(--space-sm);
    padding: var(--space-md);
  }

  .route-svg {
    display: none;
  }

  .map-node {
    position: static;
    width: 100%;
  }

  .legend {
    grid-template-columns: minmax(0, 1fr);
    padding-inline: 0;
  }
}

@media (max-width: 40rem) {
  .page {
    padding-inline: var(--space-md);
  }

  .nav-term__inner {
    padding-inline: var(--space-md);
  }

  h1 {
    max-width: 9ch;
    font-size: clamp(3.375rem, 18vw, 4.75rem);
  }

  .button-row {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .doc-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .doc-row code {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 150ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 150ms !important;
  }

  .caret {
    animation: none;
    opacity: 1;
  }
}