/* ============================================================================
   ARIS OS — shared CRT theme
   Palette mirrors the dsh-edex-ui shell: one green in, a full CRT family out.
   ========================================================================== */

:root {
  --green: #46f282;
  --dim: #30b55e;
  --border: #155b2d;
  --panel: #06120a;
  --panel-2: #04100a;
  --bg: #020805;
  --amber: #e6c85c;
  --red: #e65a5a;
  --cyan: #5ad1e0;
  --text: var(--green);
  --muted: #2c7a4a;

  --font: "JetBrains Mono", "Fira Code", ui-monospace, "SF Mono", "Cascadia Code",
    Menlo, Consolas, monospace;

  --nav-h: 56px;
  --maxw: 1080px;
}

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(70, 242, 130, 0.07), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--green); color: #000; }

a { color: var(--green); text-decoration: none; border-bottom: 1px solid var(--border); }
a:hover { color: #fff; border-bottom-color: var(--green); }

img, svg, canvas { display: block; max-width: 100%; }

h1, h2, h3, h4 { font-weight: 600; line-height: 1.2; margin: 0 0 0.5em; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

code, pre, kbd {
  font-family: var(--font);
  font-size: 0.92em;
}

pre {
  margin: 0;
  overflow-x: auto;
  background: #000;
  border: 1px solid var(--border);
  padding: 1em 1.1em;
  line-height: 1.55;
}

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

/* ---------- CRT atmosphere ---------- */
.crt::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.22) 3px
  );
  mix-blend-mode: multiply;
}

.crt::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9997;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 62%, rgba(0, 0, 0, 0.55) 100%);
}

.glow { text-shadow: 0 0 6px rgba(70, 242, 130, 0.55), 0 0 24px rgba(70, 242, 130, 0.18); }

.caret {
  display: inline-block;
  width: 0.6em;
  height: 1.05em;
  background: var(--green);
  vertical-align: text-bottom;
  animation: blink 1.06s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- boot overlay ---------- */
.boot {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: #000;
  color: var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  cursor: pointer;
  transition: opacity 0.45s ease;
}
.boot.done { opacity: 0; pointer-events: none; }
.boot pre {
  border: none;
  background: transparent;
  max-width: 640px;
  width: 100%;
  white-space: pre-wrap;
  word-break: break-word;
}
.boot .skip-hint {
  position: absolute;
  bottom: 18px;
  left: 0;
  right: 0;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ---------- nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9000;
  height: var(--nav-h);
  background: rgba(2, 8, 5, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(16px, 4vw, 40px);
}
.nav .brand {
  font-weight: 700;
  letter-spacing: 0.08em;
  border: none;
  color: var(--green);
}
.nav .brand:hover { color: #fff; }
.nav .links { display: flex; gap: 4px; align-items: center; }
.nav .links a {
  padding: 6px 10px;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: none;
  color: var(--dim);
}
.nav .links a:hover,
.nav .links a[aria-current="page"] { color: var(--green); }
.nav .links a[aria-current="page"] { text-shadow: 0 0 8px rgba(70, 242, 130, 0.5); }

/* ---------- layout ---------- */
main { padding-top: var(--nav-h); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(18px, 4vw, 32px); }

section.block { padding: clamp(56px, 9vw, 108px) 0; position: relative; }
section.block.alt { background: rgba(70, 242, 130, 0.025); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* section header in box-drawing style */
.sec {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: clamp(24px, 4vw, 40px);
}
.sec .no {
  color: var(--dim);
  font-size: 13px;
  letter-spacing: 0.2em;
}
.sec h2 {
  margin: 0;
  font-size: clamp(20px, 3vw, 27px);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.sec .line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}

.lead {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--dim);
  max-width: 760px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--green);
  color: var(--green);
  background: transparent;
  font-family: var(--font);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
  border-radius: 0;
}
.btn:hover {
  background: var(--green);
  color: #000;
  box-shadow: 0 0 18px rgba(70, 242, 130, 0.35);
  border-color: var(--green);
}
.btn.secondary { border-color: var(--dim); color: var(--dim); }
.btn.secondary:hover { background: var(--dim); color: #000; box-shadow: 0 0 18px rgba(70, 242, 130, 0.25); }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }

/* ---------- hero ---------- */
.hero {
  min-height: calc(100vh - var(--nav-h));
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: clamp(24px, 4vw, 56px);
  padding: clamp(48px, 7vw, 90px) 0;
}
.hero .kicker {
  color: var(--dim);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-size: 13px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero .kicker::before { content: "▸"; color: var(--green); }
.hero h1 {
  font-size: clamp(34px, 6.4vw, 64px);
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}
.hero h1 .accent { color: var(--green); }
.hero .tag {
  font-size: clamp(17px, 2.4vw, 22px);
  color: var(--dim);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero .sub { max-width: 560px; color: var(--dim); margin-bottom: 26px; }

.globe-host {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
}
.globe-host canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.globe-host .globe-label {
  position: absolute;
  bottom: 4px;
  right: 6px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* ---------- telemetry strip under hero ---------- */
.strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
}
.strip .cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.strip .cell {
  padding: 14px 18px;
  border-left: 1px solid var(--border);
}
.strip .cell:first-child { border-left: none; }
.strip .cell .k {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 4px;
}
.strip .cell .v {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

/* ---------- terminal / panel component ---------- */
.term {
  border: 1px solid var(--border);
  background: #000;
  box-shadow: 0 0 0 1px rgba(70, 242, 130, 0.05), 0 12px 40px rgba(0, 0, 0, 0.6);
}
.term .bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
}
.term .bar .dots { display: flex; gap: 6px; margin-right: 4px; }
.term .bar .dots span { width: 9px; height: 9px; border: 1px solid var(--border); border-radius: 50%; }
.term .bar .dots span:first-child { border-color: var(--dim); }
.term .body { padding: 16px 18px; overflow-x: auto; }
.term .body pre { border: none; padding: 0; background: transparent; }

/* ---------- feature cards ---------- */
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.card {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--panel), #000);
  padding: 22px 24px;
  position: relative;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.card:hover {
  border-color: var(--dim);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.5), 0 0 14px rgba(70, 242, 130, 0.08);
}
.card .idx {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.2em;
  display: block;
  margin-bottom: 10px;
}
.card h3 { font-size: 17px; letter-spacing: 0.04em; text-transform: uppercase; }
.card p { color: var(--dim); font-size: 14px; }

/* ---------- telemetry widgets ---------- */
.tel-row { display: flex; align-items: center; gap: 10px; margin: 5px 0; }
.tel-row .tl { width: 46px; color: var(--muted); font-size: 11px; letter-spacing: 0.12em; flex: none; }
.tel-row .tv { width: 52px; text-align: right; font-size: 13px; flex: none; font-weight: 600; }
.spark { flex: 1; min-width: 60px; height: 22px; }
.spark polyline { fill: none; stroke: var(--green); stroke-width: 1.4; }

.blocks { display: flex; gap: 3px; flex: 1; height: 14px; align-items: stretch; }
.blocks span { flex: 1; background: rgba(70, 242, 130, 0.08); border: 1px solid var(--border); }
.blocks span.on { background: var(--green); border-color: var(--green); box-shadow: 0 0 6px rgba(70, 242, 130, 0.5); }

.proc-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.proc-table th, .proc-table td { text-align: left; padding: 4px 8px; border-bottom: 1px dashed var(--border); }
.proc-table th { color: var(--muted); font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; font-size: 11px; }
.proc-table td.num, .proc-table th.num { text-align: right; }
.proc-table tr:hover td { color: #fff; }

/* traffic chart */
.traffic { width: 100%; height: 110px; }
.traffic polyline { fill: none; stroke: var(--dim); stroke-width: 1.5; }
.traffic polyline.up { stroke: var(--green); }
.traffic line { stroke: var(--border); }

/* files panel */
.files { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 8px; }
.file-cell {
  border: 1px solid transparent;
  padding: 8px 6px;
  text-align: center;
  cursor: default;
  color: var(--dim);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-cell .ic { font-size: 18px; display: block; margin-bottom: 4px; color: var(--green); }
.file-cell.selected { border-color: var(--dim); background: rgba(70, 242, 130, 0.06); color: #fff; }
.file-cell.dir .ic { color: var(--green); opacity: 0.85; }

/* ---------- loop diagram ---------- */
.loop { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 28px 0; }
.loop .node {
  border: 1px solid var(--border);
  background: var(--panel);
  text-align: center;
  padding: 18px 10px;
  position: relative;
}
.loop .node .n { font-size: 22px; margin-bottom: 6px; color: var(--green); }
.loop .node .t { font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--dim); }
.loop .node::after {
  content: "──▶";
  position: absolute;
  right: -17px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--dim);
  font-size: 12px;
}
.loop .node:last-child::after { content: "↺"; right: auto; left: 50%; top: auto; bottom: -26px; transform: translateX(-50%); font-size: 18px; }

/* ---------- demo shell ---------- */
.shell {
  border: 1px solid var(--border);
  background: #000;
  height: min(420px, 60vh);
  display: flex;
  flex-direction: column;
}
.shell .out {
  flex: 1;
  overflow-y: auto;
  padding: 14px 16px;
  font-size: 13.5px;
  line-height: 1.6;
  scrollbar-color: var(--border) transparent;
}
.shell .out .p { color: var(--dim); }
.shell .out .err { color: var(--red); }
.shell .out .ok { color: var(--green); }
.shell .out .warn { color: var(--amber); }
.shell .out .cyan { color: var(--cyan); }
.shell .in {
  display: flex;
  align-items: center;
  gap: 8px;
  border-top: 1px solid var(--border);
  padding: 10px 14px;
  background: var(--panel-2);
}
.shell .in .ps { color: var(--dim); font-size: 13px; flex: none; }
.shell .in input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--green);
  font-family: var(--font);
  font-size: 13.5px;
  caret-color: var(--green);
}

/* ---------- install ---------- */
.steps { counter-reset: step; display: grid; gap: 16px; margin: 24px 0; }
.step {
  counter-increment: step;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 16px 20px 16px 64px;
  position: relative;
}
.step::before {
  content: "0" counter(step);
  position: absolute;
  left: 18px;
  top: 16px;
  color: var(--dim);
  font-size: 15px;
  letter-spacing: 0.1em;
}
.step h3 { margin: 0 0 6px; font-size: 15px; text-transform: uppercase; letter-spacing: 0.06em; }
.step p { color: var(--dim); font-size: 14px; margin-bottom: 8px; }

/* ---------- footer ---------- */
footer.site {
  border-top: 1px solid var(--border);
  padding: 40px 0 64px;
  background: #000;
}
footer.site .cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 28px;
}
footer.site .cols h4 { font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); }
footer.site .cols ul { list-style: none; margin: 0; padding: 0; }
footer.site .cols li { margin: 6px 0; }
footer.site .cols a { font-size: 13px; color: var(--dim); border: none; }
footer.site .cols a:hover { color: var(--green); }
footer.site .legal { margin-top: 32px; padding-top: 18px; border-top: 1px dashed var(--border); color: var(--muted); font-size: 12px; }

/* ---------- docs prose ---------- */
.doc { padding: clamp(40px, 6vw, 72px) 0 96px; }
.doc h1 {
  font-size: clamp(26px, 4vw, 40px);
  letter-spacing: 0.03em;
  margin-bottom: 8px;
}
.doc .doc-sub { color: var(--dim); margin-bottom: 40px; max-width: 720px; }
.doc h2 {
  font-size: clamp(18px, 2.6vw, 23px);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 48px 0 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.doc h2::before { content: "└──"; color: var(--dim); flex: none; }
.doc p, .doc li { color: var(--dim); max-width: 720px; }
.doc strong { color: var(--green); font-weight: 600; }
.doc blockquote {
  margin: 20px 0;
  padding: 14px 18px;
  border-left: 2px solid var(--green);
  background: var(--panel);
  color: var(--dim);
}
.doc blockquote p { margin: 0; }
.doc table { border-collapse: collapse; margin: 18px 0; width: 100%; max-width: 760px; font-size: 13.5px; }
.doc th, .doc td { text-align: left; padding: 8px 12px; border: 1px solid var(--border); }
.doc th { color: var(--muted); font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; font-size: 12px; }
.doc ul, .doc ol { max-width: 720px; padding-left: 22px; }
.doc li { margin: 6px 0; }
.doc .meta-line { color: var(--muted); font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; }

.doc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 760px; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; }
  .globe-host { max-width: 420px; margin: 0 auto; }
  .grid3 { grid-template-columns: 1fr; }
  .grid2 { grid-template-columns: 1fr; }
  .loop { grid-template-columns: repeat(2, 1fr); gap: 26px 14px; }
  .loop .node:nth-child(2)::after { content: "▼"; right: auto; left: 50%; top: auto; bottom: -21px; transform: translateX(-50%); }
  .loop .node:nth-child(4)::after { content: "▲"; right: auto; left: 50%; top: -21px; bottom: auto; transform: translateX(-50%); }
  .strip .cols { grid-template-columns: repeat(2, 1fr); }
  .strip .cell:nth-child(3) { border-left: none; }
  .strip .cell { border-top: 1px solid var(--border); }
  .strip .cell:nth-child(-n + 2) { border-top: none; }
  footer.site .cols { grid-template-columns: 1fr; gap: 20px; }
  .doc-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  body { font-size: 14px; }
  .nav .links a { padding: 6px 7px; font-size: 12px; letter-spacing: 0.08em; }
  .nav .links a.github span { display: none; }
  .loop { grid-template-columns: 1fr 1fr; }
}

/* ---------- motion preferences ---------- */
@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;
  }
  .reveal { opacity: 1; transform: none; }
}