/*
Copyright 2026 Cisco Systems, Inc. and its affiliates

SPDX-License-Identifier: Apache-2.0
*/

:root {
  color-scheme: dark;
  --ink: #f8f1ff;
  --forest: #88ff00;
  --mint: #b7ff2a;
  --aqua: #2dff8a;
  --amber: #d7ff3f;
  --coral: #bd63ff;
  --paper: #f8f1ff;
  --cloud: #08050d;
  --line: #4a355e;
  --muted: #c7b8d8;
  --metal: linear-gradient(145deg, rgba(39, 25, 55, 0.96), rgba(18, 10, 28, 0.96) 52%, rgba(45, 25, 63, 0.94));
  --shadow: 0 24px 70px rgba(4, 2, 10, 0.62), 0 0 42px rgba(136, 255, 0, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

/* WCAG 2.2 SC 2.2.3 / 2.3.3: a viewer who asks the OS for reduced motion gets
   no smooth scrolling, no transitions and no animations. The background canvas
   is stopped in app.js, which checks the same media query. */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--cloud);
}

a {
  color: inherit;
}

#swarm-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background:
    radial-gradient(circle at 78% 18%, rgba(136, 255, 0, 0.2), transparent 28%),
    radial-gradient(circle at 22% 12%, rgba(189, 99, 255, 0.34), transparent 34%),
    linear-gradient(135deg, #040207 0%, #12071f 38%, #2a123d 64%, #07040c 100%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 16px clamp(20px, 4vw, 64px);
  color: var(--paper);
  background: rgba(9, 5, 15, 0.72);
  backdrop-filter: blur(14px);
  transition: background 160ms ease, box-shadow 160ms ease;
}

.site-header[data-elevated="true"] {
  color: var(--ink);
  background: rgba(14, 8, 22, 0.92);
  box-shadow: 0 10px 30px rgba(4, 2, 10, 0.36);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  color: #100719;
  background: linear-gradient(135deg, var(--mint), var(--forest));
  box-shadow: 0 0 22px rgba(136, 255, 0, 0.36);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  font-size: 0.96rem;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.hero {
  min-height: calc(100vh - 150px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 520px);
  align-items: center;
  gap: clamp(32px, 6vw, 88px);
  padding: clamp(40px, 6vw, 92px) clamp(20px, 4vw, 64px) clamp(32px, 6vw, 72px);
  color: var(--paper);
}

.hero-copy {
  max-width: 640px;
  min-width: 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--mint);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 16px;
  font-size: clamp(5rem, 14vw, 11rem);
  line-height: 0.86;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(2rem, 5vw, 4.8rem);
  line-height: 1;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.35rem;
}

.hero-lede {
  max-width: 620px;
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1.1rem, 2.4vw, 1.55rem);
  line-height: 1.45;
}

.hero-actions,
.path-tabs,
.step-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button,
.copy-button,
.path-tab,
.step {
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  color: #100719;
  background: linear-gradient(135deg, var(--amber), var(--forest));
  box-shadow: 0 0 24px rgba(136, 255, 0, 0.25);
}

.button.secondary {
  color: var(--paper);
  border-color: rgba(189, 99, 255, 0.52);
  background: rgba(189, 99, 255, 0.12);
}

.command-panel,
.delivery-card,
.path-panel,
.flow-detail,
.distribution-visual,
.benefits-grid article {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--metal);
  box-shadow: var(--shadow);
}

.command-panel {
  overflow: hidden;
  align-self: end;
  max-width: 100%;
  color: var(--ink);
}

.panel-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 8px 10px 8px 16px;
  color: var(--muted);
  background: rgba(36, 22, 51, 0.92);
}

.copy-button {
  padding: 8px 12px;
  color: #100719;
  background: var(--forest);
}

.delivery-card {
  align-self: center;
  overflow: hidden;
  color: var(--ink);
}

.delivery-card-header {
  display: grid;
  gap: 6px;
  padding: 20px;
  color: var(--paper);
  background: linear-gradient(135deg, #21122f, #311844 54%, #14240f);
}

.delivery-card-header span {
  color: var(--mint);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.delivery-card-header strong {
  font-size: 1.8rem;
  line-height: 1.05;
}

.delivery-steps {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
}

.delivery-steps li {
  padding: 18px 20px;
  background: rgba(23, 16, 33, 0.96);
}

.delivery-steps span {
  display: block;
  margin-bottom: 6px;
  color: var(--forest);
  font-weight: 900;
}

.delivery-steps p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

pre {
  margin: 0;
  overflow-x: auto;
  padding: 18px;
  font-size: 0.9rem;
  line-height: 1.6;
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.metrics-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  padding: 0 clamp(20px, 4vw, 64px) 36px;
}

.metrics-strip div {
  min-height: 120px;
  padding: 22px;
  background: linear-gradient(145deg, rgba(28, 18, 42, 0.98), rgba(14, 8, 22, 0.98));
  border: 1px solid rgba(136, 255, 0, 0.08);
}

.metrics-strip strong {
  display: block;
  color: var(--forest);
  font-size: 2rem;
}

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

.section,
.section-grid,
.benefits-grid,
.docs-band {
  padding: clamp(56px, 8vw, 108px) clamp(20px, 4vw, 64px);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  align-items: center;
  gap: clamp(28px, 6vw, 80px);
  background: linear-gradient(180deg, #100719 0%, #160d21 100%);
}

.architecture-section {
  grid-template-columns: 1fr;
  align-items: start;
  gap: 24px;
}

.architecture-section .section-copy {
  max-width: 980px;
}

.section-grid.reverse {
  grid-template-columns: minmax(320px, 1.1fr) minmax(0, 0.9fr);
  background: linear-gradient(180deg, #13091f 0%, #0b0612 100%);
}

.section-copy p:not(.eyebrow),
.section-heading p:not(.eyebrow),
.path-body p,
.flow-detail p {
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.7;
}

.distribution-visual {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: 100%;
  max-width: 1080px;
  gap: 1px;
  overflow: hidden;
  background: var(--line);
  box-shadow: var(--shadow);
}

.compare-card {
  display: grid;
  grid-template-rows: auto auto 1fr;
  align-content: start;
  gap: 10px;
  padding: 16px;
  background: linear-gradient(145deg, rgba(30, 20, 43, 0.98), rgba(17, 9, 27, 0.98));
}

.compare-card.highlight {
  background: linear-gradient(145deg, rgba(47, 25, 66, 0.98), rgba(15, 30, 11, 0.94));
}

.compare-card h3 {
  color: var(--forest);
  margin: 0;
}

.compare-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.flow-svg {
  display: block;
  width: 100%;
  max-width: 440px;
  justify-self: center;
  height: auto;
  overflow: visible;
}

.flow-svg .node rect {
  fill: #21152d;
  stroke: var(--line);
  stroke-width: 1.2;
}

.flow-svg .node.server rect {
  fill: var(--forest);
  stroke: var(--forest);
  filter: drop-shadow(0 0 12px rgba(136, 255, 0, 0.35));
}

.flow-svg .node text {
  fill: var(--ink);
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  text-anchor: middle;
  dominant-baseline: middle;
}

.flow-svg .node.server text {
  fill: #100719;
}

.flow-svg .edge {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
}

.flow-svg .edge.pull {
  stroke: var(--coral);
  filter: drop-shadow(0 0 6px rgba(189, 99, 255, 0.55));
}

.flow-svg .edge.seed {
  stroke: var(--forest);
}

.flow-svg .edge.peer {
  stroke: var(--forest);
  stroke-width: 2.4;
  filter: drop-shadow(0 0 8px rgba(136, 255, 0, 0.5));
}

.flow-svg .node .piece {
  fill: var(--forest);
}

.flow-svg .node .piece.empty {
  fill: rgba(136, 255, 0, 0.18);
}

.flow-figure {
  display: grid;
  justify-items: center;
  align-content: start;
  gap: 6px;
}

.flow-svg .edge.management,
.flow-svg .edge.control {
  stroke: var(--aqua);
  stroke-dasharray: 4 5;
}

.flow-svg .tracker rect {
  stroke: var(--aqua);
}

.flow-svg .tracker text {
  fill: var(--aqua);
}

.flow-svg .management-label {
  fill: var(--aqua);
  font-family: inherit;
  font-size: 12px;
}

.flow-svg.swarm-diagram .node text {
  font-size: 18px;
}

.flow-svg .service-group rect,
.flow-svg .peer-group rect {
  fill: none;
  stroke: var(--line);
  stroke-width: 1;
}

.flow-svg .service-group text,
.flow-svg .peer-group text {
  fill: var(--muted);
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  text-anchor: middle;
  dominant-baseline: middle;
}

.flow-legend {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 5px 16px;
  color: var(--muted);
  font-size: 0.8rem;
}

.flow-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.flow-legend span::before {
  content: "";
  width: 18px;
  border-top: 2px solid var(--forest);
}

.flow-legend .control-key::before {
  border-color: var(--aqua);
  border-top-style: dashed;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  background: var(--cloud);
}

.benefits-grid article {
  padding: 24px;
  box-shadow: none;
}

.benefits-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: 8px;
  color: #100719;
  background: linear-gradient(135deg, var(--amber), var(--forest));
  font-weight: 900;
}

.benefits-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.section {
  background: radial-gradient(circle at 20% 10%, rgba(189, 99, 255, 0.12), transparent 30%), var(--cloud);
}

.section-heading {
  max-width: 900px;
  margin-bottom: 28px;
}

.row-heading {
  max-width: none;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.flow-shell {
  display: grid;
  grid-template-columns: minmax(220px, 340px) minmax(0, 1fr);
  gap: 18px;
}

.step-list {
  align-content: start;
}

.step,
.path-tab {
  padding: 10px 14px;
  color: var(--forest);
  background: #171021;
  border-color: var(--line);
  font-weight: 800;
}

.step.active,
.path-tab.active {
  color: #100719;
  background: var(--forest);
  border-color: var(--forest);
}

.flow-detail,
.path-panel {
  padding: clamp(20px, 3vw, 34px);
}

.flow-detail code {
  display: block;
  overflow-x: auto;
  margin-top: 18px;
  padding: 14px;
  border-radius: 8px;
  color: var(--mint);
  background: #08040d;
  border: 1px solid rgba(136, 255, 0, 0.18);
}

.path-body ul {
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.8;
}

.docs-band {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(300px, 1.1fr);
  align-items: center;
  gap: 24px;
  color: var(--paper);
  background: linear-gradient(135deg, #100719, #2b123f 58%, #13240f);
}

.doc-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.doc-links a {
  min-height: 68px;
  display: flex;
  align-items: center;
  padding: 18px;
  border: 1px solid rgba(136, 255, 0, 0.22);
  border-radius: 8px;
  color: var(--paper);
  background: rgba(136, 255, 0, 0.08);
  text-decoration: none;
  font-weight: 800;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(20px, 4vw, 64px);
  color: var(--muted);
  background: #0d0714;
}

.footer a {
  color: var(--forest);
  font-weight: 800;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero,
  .section-grid,
  .section-grid.reverse,
  .flow-shell,
  .distribution-visual,
  .benefits-grid,
  .docs-band {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    gap: 24px;
    padding-top: 38px;
    padding-bottom: 28px;
  }

  .metrics-strip {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .compare-card {
    min-height: auto;
  }
}

@media (max-width: 700px) {
  .delivery-card-header {
    padding: 14px 16px;
  }

  .delivery-card-header strong {
    font-size: 1.35rem;
  }

  /* One column, not three: the three-across grid is what made the
     descriptions look like they had to go. Reflow them instead -- hiding them
     removed the hero card's only explanation of what IRIS does from the DOM
     (and from the accessibility tree) for every phone visitor. */
  .delivery-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .delivery-steps li {
    padding: 14px 16px;
  }

  .delivery-steps span {
    margin-bottom: 4px;
  }

  .delivery-steps p {
    font-size: 0.95rem;
  }
}

@media (max-width: 580px) {
  h1 {
    font-size: 4rem;
  }

  .hero {
    gap: 16px;
    padding-top: 24px;
    padding-bottom: 20px;
  }

  .hero-lede {
    margin-bottom: 18px;
    font-size: 1rem;
    line-height: 1.38;
  }

  .metrics-strip {
    grid-template-columns: 1fr;
  }

  .doc-links {
    grid-template-columns: 1fr;
  }

  .footer {
    flex-direction: column;
  }

  .simple-flow {
    grid-template-columns: 1fr;
  }

  .flow-arrows {
    display: none;
  }

  .swarm-devices {
    width: 100%;
  }
}