/* ==========================================================================
   NerdAlertAI — site.css
   Design system: "the basement wall of monitors"
   Palette: basement black / bezel steel / CRT amber / status green / deny red
   Type:    Chakra Petch (display) · IBM Plex Sans (body) · IBM Plex Mono (data)
   ========================================================================== */

:root {
  --bg:        #0B0D10;   /* basement black, slight blue cast */
  --bg-deep:   #07090B;
  --panel:     #12161C;   /* monitor face */
  --bezel:     #1E242C;   /* monitor bezel / borders */
  --bezel-hi:  #2A323C;
  --amber:     #FFB347;   /* CRT amber — primary accent */
  --amber-dim: #B97F2E;
  --green:     #57D98C;   /* status / online */
  --red:       #F2655C;   /* deny / alert */
  --text:      #D9E1E8;
  --muted:     #8A95A1;
  --faint:     #5A6470;

  --font-display: "Chakra Petch", sans-serif;
  --font-body:    "IBM Plex Sans", sans-serif;
  --font-mono:    "IBM Plex Mono", monospace;

  --maxw: 1100px;
  --radius: 6px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- nav ---------- */

.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 9, 11, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bezel);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 28px;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700; font-size: 18px; letter-spacing: 1px;
  color: var(--text);
}
.logo .accent { color: var(--amber); }
.logo .cursor {
  display: inline-block; width: 9px; height: 17px;
  background: var(--amber); vertical-align: -2px; margin-left: 3px;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.nav-links { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.nav-links a {
  color: var(--muted);
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.5px;
  text-transform: uppercase;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links a.active { color: var(--amber); }
.nav-links a.gh {
  border: 1px solid var(--bezel-hi); border-radius: var(--radius);
  padding: 5px 12px; color: var(--text);
}
.nav-links a.gh:hover { border-color: var(--amber); }

/* ---------- monitor panel: the signature component ---------- */

.monitor {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--bezel);
  border-radius: var(--radius);
  overflow: hidden;
}
.monitor::after { /* scanlines */
  content: "";
  position: absolute; inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg, rgba(255,255,255,0.018) 0 1px, transparent 1px 3px);
}
.monitor-tab {
  display: inline-block;
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--bg-deep);
  background: var(--amber-dim);
  padding: 2px 10px;
  border-bottom-right-radius: var(--radius);
}
.monitor.online .monitor-tab { background: var(--green); }
.monitor.alert  .monitor-tab { background: var(--red); }
.monitor-body { padding: 18px 20px 22px; }

/* ---------- hero ---------- */

.hero { padding: 76px 0 64px; position: relative; overflow: hidden; }
.hero-grid {
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px;
  align-items: center;
}
.eyebrow {
  font-family: var(--font-mono); font-size: 12px;
  letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--green); margin-bottom: 18px;
}
.eyebrow::before { content: "● "; }
h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.12; font-weight: 700;
  margin-bottom: 20px;
}
h1 .amber { color: var(--amber); }
.lede { color: var(--muted); font-size: 18px; max-width: 54ch; margin-bottom: 30px; }

/* monitor wall (hero right) */
.wall { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.wall .monitor { min-height: 96px; }
.wall .monitor-body {
  padding: 12px 14px;
  font-family: var(--font-mono); font-size: 11.5px;
  color: var(--muted); line-height: 1.8;
}
.wall .feed-line { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.wall .feed-line .t  { color: var(--faint); }
.wall .feed-line .ok { color: var(--green); }
.wall .feed-line .hi { color: var(--amber); }
.wall .feed-line .no { color: var(--red); }
.wall .big { grid-column: 1 / -1; }
.img-glow { box-shadow: 0 0 60px rgba(255, 179, 71, 0.06); }

/* ---------- install block ---------- */

.install { margin-top: 8px; }
.cmd {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-deep);
  border: 1px solid var(--bezel);
  border-radius: var(--radius);
  padding: 12px 14px; margin-bottom: 10px;
  font-family: var(--font-mono); font-size: 14px;
}
.cmd .num { color: var(--faint); font-size: 11px; }
.cmd code { color: var(--text); flex: 1; overflow-x: auto; white-space: nowrap; }
.cmd code .p { color: var(--green); }
.copy-btn {
  font-family: var(--font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--bezel-hi);
  border-radius: 4px; padding: 4px 10px; cursor: pointer;
  flex-shrink: 0;
}
.copy-btn:hover { color: var(--amber); border-color: var(--amber); }

/* ---------- buttons ---------- */

.btn-row { display: flex; gap: 14px; margin-top: 26px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  font-family: var(--font-display); font-weight: 600;
  font-size: 15px; letter-spacing: 0.5px;
  padding: 11px 24px; border-radius: var(--radius);
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--amber); color: var(--bg-deep); }
.btn-primary:hover { background: #FFC36B; }
.btn-ghost { border: 1px solid var(--bezel-hi); color: var(--text); }
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }

/* ---------- sections ---------- */

section { padding: 64px 0; }
section.alt { background: var(--bg-deep); border-top: 1px solid var(--bezel); border-bottom: 1px solid var(--bezel); }
h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 36px);
  margin-bottom: 14px;
}
.section-lede { color: var(--muted); max-width: 64ch; margin-bottom: 40px; }

/* ---------- feature grid ---------- */

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.feature h3 {
  font-family: var(--font-display); font-size: 17px;
  margin: 8px 0 8px;
}
.feature p { color: var(--muted); font-size: 14.5px; }
.feature .monitor-body { padding-top: 14px; }

/* ---------- personality cards ---------- */

.img-slot {
  background:
    repeating-linear-gradient(45deg, var(--bezel) 0 8px, var(--panel) 8px 16px);
  border: 1px dashed var(--bezel-hi);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--faint);
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 1px; text-align: center; padding: 8px;
}
.persona-card .img-slot { aspect-ratio: 1 / 1; margin-bottom: 14px; }
.persona-card h3 { font-family: var(--font-display); font-size: 18px; }
.persona-card .role {
  font-family: var(--font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--green); margin: 2px 0 10px;
}
.persona-card p { color: var(--muted); font-size: 14px; }
.persona-card blockquote {
  margin-top: 12px; padding: 10px 14px;
  border-left: 2px solid var(--amber);
  background: var(--bg-deep);
  color: var(--text); font-size: 13.5px; font-style: italic;
}
.featured { display: grid; grid-template-columns: 320px 1fr; gap: 36px; align-items: center; }
.featured .img-slot { aspect-ratio: 1 / 1; }

/* ---------- trust ladder ---------- */

.ladder { display: flex; flex-direction: column-reverse; gap: 10px; max-width: 720px; }
.rung {
  display: grid; grid-template-columns: 64px 1fr; gap: 18px;
  align-items: start;
  background: var(--panel);
  border: 1px solid var(--bezel);
  border-left: 3px solid var(--green);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.rung.warn  { border-left-color: var(--amber); }
.rung.hot   { border-left-color: var(--red); }
.rung .lvl {
  font-family: var(--font-display); font-weight: 700;
  font-size: 24px; color: var(--text);
}
.rung h4 { font-family: var(--font-display); font-size: 15px; margin-bottom: 4px; }
.rung p { color: var(--muted); font-size: 14px; }

/* ---------- approval card demo ---------- */

.approval {
  max-width: 480px;
  border-left: 3px solid var(--amber);
}
.approval .req {
  font-family: var(--font-mono); font-size: 13px;
  color: var(--muted); line-height: 2;
}
.approval .req b { color: var(--text); font-weight: 600; }
.approval-actions { display: flex; gap: 12px; margin-top: 16px; }
.approval-actions button {
  flex: 1; cursor: pointer;
  font-family: var(--font-display); font-weight: 600; font-size: 14px;
  padding: 10px 0; border-radius: var(--radius);
  border: 1px solid transparent;
}
.btn-approve { background: var(--green); color: var(--bg-deep); }
.btn-deny    { background: transparent; color: var(--red); border-color: var(--red) !important; }
.approval .verdict {
  margin-top: 14px;
  font-family: var(--font-mono); font-size: 13px;
  min-height: 22px;
}
.approval .verdict.ok { color: var(--green); }
.approval .verdict.no { color: var(--red); }

/* ---------- diagram ---------- */

.flow {
  display: flex; align-items: center; gap: 10px;
  flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 13px;
}
.flow .node {
  background: var(--panel); border: 1px solid var(--bezel-hi);
  border-radius: var(--radius); padding: 10px 16px;
}
.flow .node.choke { border-color: var(--amber); color: var(--amber); }
.flow .arrow { color: var(--faint); }

/* ---------- docs ---------- */

.doc-section { margin-bottom: 48px; }
.doc-section h3 {
  font-family: var(--font-display); font-size: 20px;
  margin-bottom: 12px; padding-bottom: 8px;
  border-bottom: 1px solid var(--bezel);
}
.doc-section p { color: var(--muted); margin-bottom: 14px; max-width: 70ch; }
pre.block {
  background: var(--bg-deep);
  border: 1px solid var(--bezel);
  border-radius: var(--radius);
  padding: 16px 18px; margin: 14px 0;
  font-family: var(--font-mono); font-size: 13.5px;
  overflow-x: auto; line-height: 1.8;
  color: var(--text);
}
pre.block .c { color: var(--faint); }
pre.block .k { color: var(--amber); }
pre.block .v { color: var(--green); }

table.spec {
  width: 100%; border-collapse: collapse; margin: 14px 0;
  font-size: 14px;
}
table.spec th, table.spec td {
  text-align: left; padding: 10px 14px;
  border: 1px solid var(--bezel);
}
table.spec th {
  font-family: var(--font-mono); font-size: 11.5px;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--amber); background: var(--panel);
}
table.spec td { color: var(--muted); }
table.spec td code { font-family: var(--font-mono); color: var(--text); font-size: 13px; }

/* ---------- roadmap ---------- */

.timeline { border-left: 2px solid var(--bezel-hi); margin-left: 8px; padding-left: 32px; }
.milestone { position: relative; padding-bottom: 40px; }
.milestone::before {
  content: ""; position: absolute; left: -39px; top: 6px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--green);
}
.milestone.next::before    { border-color: var(--amber); }
.milestone.planned::before { border-color: var(--faint); }
.milestone .when {
  font-family: var(--font-mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--green);
}
.milestone.next .when    { color: var(--amber); }
.milestone.planned .when { color: var(--faint); }
.milestone h3 { font-family: var(--font-display); font-size: 19px; margin: 4px 0 8px; }
.milestone p  { color: var(--muted); font-size: 14.5px; max-width: 64ch; }

/* ---------- teaser strip ---------- */

.teaser-strip { display: grid; grid-template-columns: repeat(7, 1fr); gap: 12px; }
.teaser-strip a { text-decoration: none; }
.teaser-strip .img-slot { aspect-ratio: 1/1; }
.teaser-strip .name {
  display: block; text-align: center; margin-top: 8px;
  font-family: var(--font-mono); font-size: 11.5px;
  color: var(--muted); letter-spacing: 1px; text-transform: uppercase;
}
.teaser-strip a:hover .name { color: var(--amber); }

/* ---------- footer ---------- */

footer {
  border-top: 1px solid var(--bezel);
  padding: 36px 0; margin-top: 32px;
  font-family: var(--font-mono); font-size: 12.5px;
  color: var(--faint);
}
.footer-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
footer a { color: var(--muted); }

/* ---------- responsive ---------- */

@media (max-width: 880px) {
  .hero-grid, .featured { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .teaser-strip { grid-template-columns: repeat(4, 1fr); }
  .nav-links { gap: 14px; flex-wrap: wrap; }
  .wall .monitor { max-width: 100%; }
}
@media (max-width: 560px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .teaser-strip { grid-template-columns: repeat(2, 1fr); }
  .rung { grid-template-columns: 48px 1fr; }

  /* phone overflow fixes */
  .wrap { padding: 0 18px; }
  section { padding: 44px 0; }
  .hero { padding: 48px 0 40px; }

  h1 { font-size: 28px; }
  .lede { font-size: 16px; }

  .eyebrow { white-space: normal; letter-spacing: 1.5px; font-size: 11px; }

  .nav-inner { gap: 14px; padding: 12px 18px; }
  .logo { font-size: 16px; }
  .nav-links { gap: 10px 14px; }
  .nav-links a { font-size: 12px; }

  /* commands wrap fully instead of scrolling off-screen */
  .cmd { flex-wrap: wrap; font-size: 12px; }
  .cmd code { white-space: pre-wrap; word-break: break-all; flex-basis: 100%; }
  .copy-btn { margin-left: auto; }
}

/* ---------- motion respect ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .logo .cursor { animation: none; }
  * { transition: none !important; }
}