/* ARDYN — public experience design system (ARDYN-WEB-EXPERIENCE-002)
   Tokens are the frozen D1 console tokens (calibrated against the
   founder-approved 01-home.png at 1672x941). One identity for public pages,
   sign-in and the console. Do not fork values here — extend. */
:root {
  --ardyn-page: #010b0f;
  --ardyn-rail: #020e12;
  --ardyn-panel: #050f14;
  --ardyn-panel-raised: #0a1a20;
  --ardyn-panel-inset: #04131a;
  --ardyn-border: #17393f;
  --ardyn-border-strong: #2b5a60;
  --ardyn-ink: #eef4f4;
  --ardyn-ink-secondary: #c6d6d8;
  --ardyn-ink-muted: #8aa4ac;
  --ardyn-ink-faint: #6f8b93;
  --ardyn-cyan: #8ff0f7;
  --ardyn-cyan-strong: #19ede5;
  --ardyn-cyan-dim: #2fb8b3;
  --ardyn-green: #4ade80;
  --ardyn-warning: #f0b743;
  --ardyn-error: #f06d75;
  --ardyn-rail-width: 248px;
  --ardyn-gutter: 24px;
  --ardyn-panel-gap: 16px;
  --ardyn-panel-radius: 4px;
  --ardyn-topbar-height: 70px;
  --ardyn-display-font: "Marcellus", Georgia, serif;
  --ardyn-ui-font: "Inter", system-ui, sans-serif;
  --ardyn-mono-font: "JetBrains Mono", ui-monospace, monospace;
  --ardyn-glow: 0 0 18px rgb(143 240 247 / 16%);
  --ardyn-transition: 160ms ease;
}
@media (prefers-reduced-motion: reduce) {
  :root { --ardyn-transition: 0ms; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--ardyn-page);
  color: var(--ardyn-ink);
  font-family: var(--ardyn-ui-font);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a { color: var(--ardyn-cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--ardyn-cyan-strong); outline-offset: 2px; }
img { max-width: 100%; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--ardyn-cyan);
  color: #012326; padding: 8px 14px; z-index: 100; border-radius: 2px;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ---------- app frame (public + console share it) ---------- */
.app { display: grid; grid-template-columns: var(--ardyn-rail-width) minmax(0, 1fr); min-height: 100vh; }

/* ---------- left rail ---------- */
.rail {
  background: radial-gradient(120% 60% at 0% 0%, rgb(25 237 229 / 5%), transparent 60%), var(--ardyn-rail);
  border-right: 1px solid var(--ardyn-border);
  display: flex; flex-direction: column;
  padding: 28px 0 20px;
  position: sticky; top: 0; height: 100vh;
}
.rail-brand { display: flex; align-items: center; gap: 12px; padding: 0 24px; color: inherit; }
.rail-brand:hover { text-decoration: none; }
.rail-brand .emblem { width: 44px; height: auto; filter: drop-shadow(0 0 6px rgb(143 240 247 / 25%)); }
.rail-brand .name { font-family: var(--ardyn-display-font); font-size: 22px; letter-spacing: 0.02em; color: var(--ardyn-ink); line-height: 1.1; }
.rail-brand .legal { font-size: 9px; letter-spacing: 0.14em; color: var(--ardyn-ink-faint); text-transform: uppercase; }
.rail-nav { margin-top: 32px; display: flex; flex-direction: column; gap: 2px; }
.rail-nav a {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 24px; color: var(--ardyn-ink-muted);
  font-size: 13.5px; border-left: 2px solid transparent;
  transition: color var(--ardyn-transition), background var(--ardyn-transition);
}
.rail-nav a .nav-ico { width: 16px; text-align: center; opacity: 0.8; font-size: 12px; }
.rail-nav a:hover { color: var(--ardyn-ink); text-decoration: none; background: rgb(143 240 247 / 4%); }
.rail-nav a[aria-current="page"] {
  color: var(--ardyn-ink); background: linear-gradient(90deg, rgb(143 240 247 / 10%), transparent 70%);
  border-left-color: var(--ardyn-cyan-strong);
}
.rail-sep { height: 1px; background: var(--ardyn-border); margin: 14px 24px; }
.rail-nav.secondary a { font-size: 12.5px; padding: 7px 24px; }
.rail-footer { margin-top: auto; padding: 0 24px; }
.rail-footer .tagline {
  font-family: var(--ardyn-display-font);
  font-size: 12px; letter-spacing: 0.16em; color: var(--ardyn-cyan-dim);
  line-height: 1.7; text-transform: uppercase; margin-bottom: 14px;
}
.rail-footer .legal { font-size: 9px; letter-spacing: 0.08em; color: var(--ardyn-ink-faint); }

/* ---------- main column + top bar ---------- */
.main-col { display: flex; flex-direction: column; min-width: 0; }
.topbar {
  height: var(--ardyn-topbar-height);
  display: flex; align-items: center; gap: 16px;
  padding: 0 var(--ardyn-gutter);
  border-bottom: 1px solid var(--ardyn-border);
  background: rgb(2 14 18 / 78%);
  backdrop-filter: blur(6px);
  position: sticky; top: 0; z-index: 20;
}
.topbar .context {
  font-size: 10.5px; letter-spacing: 0.24em; color: var(--ardyn-ink-muted); text-transform: uppercase;
  display: flex; align-items: center; gap: 10px; white-space: nowrap;
}
.topbar .context .diamond { color: var(--ardyn-cyan-dim); }
.topbar .spacer { flex: 1; }
.topbar .top-links { display: flex; gap: 18px; font-size: 12.5px; }
.topbar .top-links a { color: var(--ardyn-ink-muted); }
.topbar .top-links a:hover { color: var(--ardyn-ink); }
.menu-toggle { display: none; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--ardyn-ui-font); font-size: 13px; font-weight: 600; letter-spacing: 0.02em;
  padding: 10px 18px; border-radius: 3px; border: 1px solid var(--ardyn-border-strong);
  color: var(--ardyn-ink); background: rgb(10 26 32 / 70%); cursor: pointer;
  transition: border-color var(--ardyn-transition), background var(--ardyn-transition), box-shadow var(--ardyn-transition);
  white-space: nowrap;
}
.btn:hover { text-decoration: none; border-color: var(--ardyn-cyan-dim); box-shadow: var(--ardyn-glow); }
.btn.primary { background: linear-gradient(180deg, #1fd9d2, #12a9a4); color: #01181a; border-color: #2ff0e8; }
.btn.primary:hover { background: linear-gradient(180deg, #45f2eb, #19c3bd); }
.btn.ghost { background: transparent; }
.btn.sm { padding: 7px 13px; font-size: 12px; }
.text-link { font-size: 13px; color: var(--ardyn-cyan); }

/* ---------- content ---------- */
.content { padding: 0 var(--ardyn-gutter) 0; min-width: 0; }
.eyebrow { font-size: 11px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--ardyn-cyan-dim); font-weight: 500; margin: 0 0 16px; }
.display { font-family: var(--ardyn-display-font); font-weight: 400; letter-spacing: 0.01em; color: var(--ardyn-ink); }
.accent { color: var(--ardyn-cyan); text-shadow: var(--ardyn-glow); }
.lede { color: var(--ardyn-ink-secondary); font-size: 16px; line-height: 1.6; max-width: 640px; }
.muted { color: var(--ardyn-ink-muted); }
.mono { font-family: var(--ardyn-mono-font); }

/* ---------- planetary landscape (shared by hero + sign-in) ---------- */
.landscape { position: absolute; inset: 0; z-index: 0; overflow: hidden;
  background:
    radial-gradient(58% 120% at 82% 6%, rgb(60 152 158 / 28%), transparent 55%),
    radial-gradient(40% 80% at 64% 30%, rgb(28 96 102 / 22%), transparent 60%),
    radial-gradient(30% 26% at 55% 70%, rgb(143 240 247 / 9%), transparent 70%),
    linear-gradient(180deg, #02100f 0%, #01151b 46%, #010b0f 100%);
}
.landscape::before { /* horizon arc */
  content: ""; position: absolute; left: 12%; right: -6%; bottom: -58%; aspect-ratio: 2.2 / 1;
  border-radius: 50%;
  border-top: 1px solid rgb(143 240 247 / 30%);
  box-shadow: 0 -2px 30px rgb(143 240 247 / 12%);
  background: radial-gradient(60% 100% at 50% 0%, rgb(31 122 126 / 22%), transparent 70%);
}
.landscape::after { /* rocky terrain silhouette */
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 120px;
  background:
    linear-gradient(160deg, transparent 30%, rgb(4 20 24 / 92%) 60%),
    radial-gradient(140% 90% at 80% 108%, rgb(10 38 44 / 88%), transparent 65%);
  clip-path: polygon(0 62%, 8% 70%, 16% 58%, 26% 72%, 36% 55%, 47% 68%, 58% 52%, 70% 66%, 82% 56%, 100% 70%, 100% 100%, 0 100%);
}
.landscape .stars { position: absolute; inset: 0; opacity: 0.5;
  background-image:
    radial-gradient(1px 1px at 12% 18%, #cfe 50%, transparent 51%),
    radial-gradient(1px 1px at 34% 9%, #bde 50%, transparent 51%),
    radial-gradient(1px 1px at 51% 22%, #def 50%, transparent 51%),
    radial-gradient(1px 1px at 72% 12%, #cfe 50%, transparent 51%),
    radial-gradient(1px 1px at 88% 28%, #bde 50%, transparent 51%),
    radial-gradient(1px 1px at 22% 36%, #9cd 50%, transparent 51%),
    radial-gradient(1px 1px at 63% 40%, #9cd 50%, transparent 51%);
}

/* ---------- panels ---------- */
.panel {
  background: linear-gradient(180deg, rgb(10 26 32 / 72%), rgb(5 15 20 / 88%));
  border: 1px solid var(--ardyn-border);
  border-radius: var(--ardyn-panel-radius);
  padding: 20px;
  position: relative;
}
.panel h2, .panel h3 { font-family: var(--ardyn-display-font); font-weight: 400; margin: 0; color: var(--ardyn-ink); letter-spacing: 0.01em; }
.panel h2 { font-size: 20px; }
.panel h3 { font-size: 18px; }
.panel .panel-sub { font-size: 11px; color: var(--ardyn-ink-faint); letter-spacing: 0.08em; text-transform: uppercase; }
.panel-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
a.panel { color: inherit; display: block; transition: border-color var(--ardyn-transition), box-shadow var(--ardyn-transition); }
a.panel:hover { text-decoration: none; border-color: var(--ardyn-border-strong); box-shadow: var(--ardyn-glow); }
.label-chip {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid rgb(240 183 67 / 45%); border-radius: 2px;
  color: var(--ardyn-warning); font-size: 10px; letter-spacing: 0.14em;
  padding: 3px 8px; text-transform: uppercase; white-space: nowrap; font-family: var(--ardyn-mono-font);
}

/* ---------- footer ---------- */
.page-footer {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px;
  padding: 14px var(--ardyn-gutter) 12px; margin-top: 40px;
  border-top: 1px solid var(--ardyn-border);
  font-size: 11.5px; color: var(--ardyn-ink-faint);
}
.page-footer a { color: var(--ardyn-ink-muted); }
.page-footer .foot-rule { flex: 1; }
.page-footer .foot-caps { letter-spacing: 0.24em; color: var(--ardyn-cyan-dim); text-transform: uppercase; font-size: 10px; }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .app { grid-template-columns: 1fr; }
  .rail { position: fixed; inset: 0 auto 0 0; width: 280px; z-index: 50; transform: translateX(-100%); transition: transform 200ms ease; }
  .rail.open { transform: none; box-shadow: 0 0 60px rgb(0 0 0 / 60%); }
  .menu-toggle { display: inline-flex; background: transparent; border: 1px solid var(--ardyn-border); color: var(--ardyn-ink); border-radius: 3px; padding: 6px 10px; font-size: 16px; cursor: pointer; }
  .topbar .top-links { display: none; }
}
@media (max-width: 560px) {
  .topbar { gap: 10px; padding: 0 14px; }
  .topbar .context { font-size: 9.5px; letter-spacing: 0.16em; }
  .topbar .btn.ghost { display: none; }
  .content { padding: 0 14px; }
}