/* RPOW Gateway — site styles, matched to the cyberseal.dev design system. */
:root {
  --ink: #0b0c0b;
  --ink-2: #0f110f;
  --surface: #141714;
  --line: #262b27;
  --line-soft: #1e221f;
  --text: #e9ece9;
  --text-dim: #a2a8a3;
  --muted: #6e746f;
  --seal: #419d54;
  --seal-bright: #5bbe72;
  --seal-deep: #2e7b3f;
  --alarm: #d6483c;
  --amber: #d9a441;

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --container: 72rem;
  --gutter: clamp(1rem, 4vw, 2rem);
  --header-h: 4rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 1rem); }
body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.625;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; letter-spacing: -.02em; margin: 0; }
p { margin: 0; }

.skip-link {
  position: absolute; left: 1rem; top: -3rem; z-index: 100;
  background: var(--seal); color: var(--ink); padding: .5rem 1rem; border-radius: .25rem;
  font-family: var(--font-mono); font-size: .75rem; text-decoration: none;
}
.skip-link:focus { top: 1rem; }

:focus-visible { outline: 2px solid var(--seal-bright); outline-offset: 3px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.container.narrow { max-width: 48rem; }

/* Labels and buttons */
.eyebrow, .mono-label {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.eyebrow { color: var(--seal-bright); margin-bottom: 1rem; }
.mono-label { color: var(--muted); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 2.75rem; padding: .7rem 1.25rem;
  font-family: var(--font-mono); font-size: .75rem; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase; text-decoration: none;
  border-radius: .25rem; border: 1px solid transparent;
  transition: background-color .15s, border-color .15s, color .15s;
}
.btn-primary { background: var(--seal); color: var(--ink); }
.btn-primary:hover { background: var(--seal-bright); }
.btn-ghost { color: var(--text-dim); }
.btn-ghost:hover { color: var(--text); }
.btn-outline { border-color: var(--line); background: transparent; color: var(--text); cursor: pointer; }
.btn-outline:hover { border-color: var(--seal); color: var(--seal-bright); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--ink) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line-soft);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
  min-height: var(--header-h);
}
.brand {
  display: inline-flex; align-items: center; gap: .75rem; text-decoration: none;
  font-family: var(--font-display); font-weight: 600; font-size: 1.05rem;
  letter-spacing: .32em; color: var(--seal-bright);
}
.brand-mark {
  display: grid; place-items: center; width: 1.9rem; height: 1.9rem;
  border: 1px solid var(--seal); border-radius: .25rem;
  font-family: var(--font-mono); font-size: .85rem; letter-spacing: 0; color: var(--seal-bright);
}
.site-nav { display: flex; align-items: center; gap: 1.75rem; }
.site-nav a:not(.btn) { color: var(--text-dim); text-decoration: none; font-size: .875rem; }
.site-nav a:not(.btn):hover { color: var(--text); }
.site-nav .btn { min-height: 2.25rem; padding: .5rem 1rem; }

/* Hero (overview) */
.hero { padding: clamp(4rem, 9vw, 7rem) 0 clamp(4rem, 8vw, 6rem); }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: clamp(2rem, 5vw, 4rem); align-items: center;
}
.hero h1 { font-size: clamp(2.25rem, 4.2vw, 3rem); line-height: 1.08; margin-bottom: 1.5rem; }
.hero-copy p { color: var(--text-dim); font-size: 1.0625rem; }
.hero-copy p + p { margin-top: 1rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem 1rem; margin-top: 2rem; }

.principles { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.75rem; }
.principles span {
  font-family: var(--font-mono); font-size: .6875rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-dim); border: 1px solid var(--line); border-radius: .25rem; padding: .3rem .6rem;
}

/* Admission model panel — the terminal-style visual on the right of the hero */
.model-panel {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: .25rem;
  padding: 1.25rem;
  font-family: var(--font-mono);
}
.model-panel .mono-label { font-size: .625rem; }
.model-stage {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center;
  gap: .5rem; margin: 1.5rem 0;
}
.node {
  border: 1px solid var(--seal-deep); border-radius: .25rem; background: var(--surface);
  padding: .75rem .5rem; text-align: center;
}
.node span { display: block; font-size: .625rem; color: var(--muted); }
.node strong { display: block; font-family: var(--font-display); font-weight: 500; font-size: 1rem; color: var(--text); margin: .15rem 0; }
.node small { display: block; font-size: .625rem; color: var(--text-dim); }
.node.gateway { border-color: var(--seal-bright); box-shadow: 0 0 0 1px var(--seal-deep), 0 0 24px -8px var(--seal); }
.node.gateway strong { color: var(--seal-bright); }
.flow { display: grid; justify-items: center; gap: .3rem; min-width: 3.25rem; }
.flow i {
  position: relative; display: block; width: 100%; height: 1px; background: var(--line); overflow: hidden;
}
.flow i::after {
  content: ""; position: absolute; inset: 0 auto 0 -40%; width: 40%;
  background: linear-gradient(90deg, transparent, var(--seal-bright), transparent);
  animation: packet 2.4s linear infinite;
}
.flow:nth-of-type(4) i::after { animation-delay: 1.2s; }
.flow b { font-weight: 400; font-size: .625rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }

.model-log { border-top: 1px solid var(--line-soft); padding-top: 1rem; }
.model-log ol { list-style: none; margin: .75rem 0 0; padding: 0; display: grid; gap: .4rem; }
.model-log li {
  display: grid; grid-template-columns: 4.5rem 1fr auto; gap: .75rem;
  font-size: .6875rem; color: var(--text-dim);
}
.model-log li time { color: var(--muted); }
.model-log li b { font-weight: 400; color: var(--seal-bright); }
.model-log li.deny b { color: var(--alarm); }

.transaction-strip {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--line-soft);
  font-size: .625rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted);
}
.transaction-strip strong { font-size: .8125rem; color: var(--amber); letter-spacing: .08em; }

/* Partner marks band */
.marks {
  background: #000; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft);
  padding: clamp(1.5rem, 4vw, 2.5rem) 0;
}
.marks img { width: min(100%, 44rem); margin: 0 auto; }

/* Sections */
.section { padding: clamp(4.5rem, 9vw, 7rem) 0; border-top: 1px solid var(--line-soft); }
.section.alt { background: var(--ink-2); }
.section h2 { font-size: clamp(1.75rem, 3.4vw, 2.5rem); line-height: 1.15; max-width: 46rem; }
.section-intro { color: var(--text-dim); max-width: 46rem; margin-top: 1.5rem; font-size: 1.0625rem; }
.section-head { margin-bottom: clamp(2.5rem, 5vw, 3.5rem); }

/* Strategic imperative cards — matched to cyberseal's "how it works" stages */
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: .25rem;
  padding: 1.75rem 1.5rem;
}
.card.accent { border-color: var(--seal-deep); box-shadow: inset 0 1px 0 var(--seal); }
.card .mono-label { display: block; margin-bottom: 1.25rem; }
.card .mono-label b { color: var(--seal-bright); font-weight: 400; }
.card h3 { font-size: 1.25rem; margin-bottom: .35rem; }
.card .kicker { color: var(--muted); font-size: .875rem; margin-bottom: 1.25rem; }
.card ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .85rem; }
.card li {
  position: relative; padding-left: 1.1rem; color: var(--text-dim); font-size: .9375rem; line-height: 1.55;
}
.card li::before {
  content: ""; position: absolute; left: 0; top: .6em; width: .4rem; height: .4rem;
  border: 1px solid var(--seal); border-radius: 1px;
}
.card li strong { color: var(--text); font-weight: 500; }

/* Questions accordion */
.question-list { border-top: 1px solid var(--line); }
.question-list details { border-bottom: 1px solid var(--line); }
.question-list summary {
  display: grid; grid-template-columns: 3rem 1fr 1.5rem; align-items: baseline; gap: 1rem;
  padding: 1.5rem 0; cursor: pointer; list-style: none;
  font-family: var(--font-display); font-size: clamp(1.1rem, 2vw, 1.35rem); font-weight: 500; line-height: 1.35;
}
.question-list summary::-webkit-details-marker { display: none; }
.question-list summary span { font-family: var(--font-mono); font-size: .75rem; color: var(--seal-bright); letter-spacing: .1em; }
.question-list summary::after {
  content: "+"; font-family: var(--font-mono); font-size: 1.1rem; color: var(--muted); text-align: right;
  transition: transform .2s;
}
.question-list details[open] summary::after { content: "−"; color: var(--seal-bright); }
.question-list summary:hover { color: var(--seal-bright); }
.question-list details p { color: var(--text-dim); padding: 0 2.5rem 1.75rem 4rem; max-width: 52rem; }

/* Telemetry */
.telemetry-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(2rem, 5vw, 4rem); align-items: end; }
.telemetry-grid p { color: var(--text-dim); font-size: 1.0625rem; }


.screen-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 1rem; }
.screen-card {
  display: block; text-decoration: none;
  background: var(--surface); border: 1px solid var(--line); border-radius: .25rem; padding: 1.5rem;
  transition: border-color .15s, transform .15s;
}
.screen-card:hover { border-color: var(--seal); transform: translateY(-2px); }
.screen-card .mono-label { display: flex; justify-content: space-between; }
.screen-card .mono-label i { font-style: normal; color: var(--seal-bright); }
.screen-card h3 { font-size: 1.125rem; margin: 1rem 0 .4rem; }
.screen-card p { color: var(--text-dim); font-size: .875rem; line-height: 1.55; }

.demo-cta {
  margin-top: clamp(3rem, 6vw, 4rem);
  border: 1px solid var(--line); border-radius: .25rem;
  background:
    linear-gradient(var(--line-soft) 1px, transparent 1px) 0 0 / 100% 2.5rem,
    var(--ink-2);
  padding: clamp(2.5rem, 6vw, 4rem) var(--gutter);
  text-align: center;
}
.demo-cta h2 { margin: 0 auto 1rem; }
.demo-cta p { color: var(--text-dim); max-width: 40rem; margin: 0 auto; }
.demo-cta .hero-actions { justify-content: center; }
.demo-notice {
  display: inline-flex; flex-wrap: wrap; justify-content: center; gap: .5rem 1rem; margin-bottom: 1.5rem;
  font-family: var(--font-mono); font-size: .6875rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted);
}
.demo-notice b { color: var(--amber); font-weight: 600; }

/* Footer */
.site-footer { border-top: 1px solid var(--line-soft); padding: 2.5rem 0; }
.site-footer .container { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem 2rem; }
.site-footer p { color: var(--muted); font-size: .8125rem; }
.site-footer a { color: var(--text-dim); font-family: var(--font-mono); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; text-decoration: none; }
.site-footer a:hover { color: var(--seal-bright); }

/* Scroll reveal, matching cyberseal's section fade-in. Content stays visible without JS. */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }

@keyframes packet { to { left: 100%; } }

@media (max-width: 960px) {
  .hero-grid, .telemetry-grid { grid-template-columns: 1fr; }
  .card-grid, .screen-grid { grid-template-columns: 1fr; }
  .site-nav a:not(.btn) { display: none; }
}
@media (max-width: 600px) {
  .model-stage { grid-template-columns: 1fr; }
  .flow { min-height: 2rem; }
  .flow i { width: 1px; height: 1.25rem; margin: 0 auto; }
  .flow i::after { display: none; }
  .question-list summary { grid-template-columns: 2.25rem 1fr 1.25rem; }
  .question-list details p { padding: 0 0 1.5rem 3.25rem; }
  .model-log li { grid-template-columns: 1fr auto; }
  .model-log li time { display: none; }
  .brand { letter-spacing: .2em; font-size: .95rem; }
  .transaction-strip { flex-direction: column; align-items: flex-start; gap: .35rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}