/* =========================================================================
   Vikas Phatak — high-performance HMI theme
   Palette is calm and monochrome by default. Saturated colour means status.
   Fonts: IBM Plex, self-hosted (OFL). See /fonts/OFL.txt.
   ========================================================================= */

/* IBM Plex Mono */
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/IBMPlexMono-Regular.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 500; font-display: swap; src: url("/fonts/IBMPlexMono-Medium.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 600; font-display: swap; src: url("/fonts/IBMPlexMono-SemiBold.woff2") format("woff2"); }

/* IBM Plex Sans */
@font-face { font-family: "IBM Plex Sans"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/IBMPlexSans-Regular.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-style: normal; font-weight: 500; font-display: swap; src: url("/fonts/IBMPlexSans-Medium.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-style: normal; font-weight: 600; font-display: swap; src: url("/fonts/IBMPlexSans-SemiBold.woff2") format("woff2"); }

/* IBM Plex Sans Condensed */
@font-face { font-family: "IBM Plex Sans Condensed"; font-style: normal; font-weight: 500; font-display: swap; src: url("/fonts/IBMPlexSansCondensed-Medium.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans Condensed"; font-style: normal; font-weight: 600; font-display: swap; src: url("/fonts/IBMPlexSansCondensed-SemiBold.woff2") format("woff2"); }

:root {
  /* Surfaces */
  --bg:        #1a1d21;
  --bg-deep:   #15171b;
  --panel:     #22262b;
  --panel-2:   #282d33;
  --line:      #363c44;
  --line-soft: #2b3038;

  /* Ink */
  --ink:       #d8dce1;
  --ink-dim:   #9aa2ac;
  --ink-faint: #656d78;

  /* Status — used sparingly, and only to mean something */
  --run:   #45c46e;
  --attn:  #e3b341;
  --info:  #6cb6ff;
  --alarm: #f0645b;

  /* Type */
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --sans: "IBM Plex Sans", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --cond: "IBM Plex Sans Condensed", var(--sans);

  /* Rhythm */
  --maxw: 1120px;
  --gut: clamp(1.25rem, 4vw, 2.5rem);
  --radius: 4px;
}

/* ------------------------------------------------------------------ reset */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* faint engineering grid, barely there */
  background-image:
    linear-gradient(rgba(255,255,255,0.014) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.014) 1px, transparent 1px);
  background-size: 48px 48px;
}

a { color: inherit; text-decoration: none; }

.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
.wrap--narrow { max-width: 720px; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--run); color: #0c1410; padding: .6rem 1rem;
  font-family: var(--mono); font-weight: 600;
}
.skip-link:focus { left: .5rem; top: .5rem; }

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

/* --------------------------------------------------------------- the LED */
.led {
  width: 8px; height: 8px; border-radius: 50%;
  display: inline-block; flex: none;
  background: var(--ink-faint);
}
.led--sm { width: 6px; height: 6px; }
.led--run {
  background: var(--run);
  box-shadow: 0 0 0 2px rgba(69,196,110,0.18), 0 0 8px rgba(69,196,110,0.55);
  animation: led-pulse 2.6s ease-in-out infinite;
}
@keyframes led-pulse {
  0%, 100% { box-shadow: 0 0 0 2px rgba(69,196,110,0.16), 0 0 6px rgba(69,196,110,0.40); }
  50%      { box-shadow: 0 0 0 2px rgba(69,196,110,0.26), 0 0 12px rgba(69,196,110,0.75); }
}
@media (prefers-reduced-motion: reduce) { .led--run { animation: none; } }

/* ------------------------------------------------------------- statusbar */
.statusbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg-deep) 92%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
}
.statusbar__inner {
  max-width: var(--maxw); margin-inline: auto;
  padding: .55rem var(--gut);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.statusbar__id { display: inline-flex; align-items: center; gap: .55rem; }
.statusbar__name {
  font-weight: 600; font-size: .82rem; letter-spacing: .02em;
  color: var(--ink);
}
.statusbar__tags { display: flex; gap: 1.25rem; margin: 0; }
.tag { display: flex; align-items: baseline; gap: .4rem; margin: 0; }
.tag dt { color: var(--ink-faint); font-size: .68rem; letter-spacing: .08em; margin: 0; }
.tag__val { margin: 0; font-size: .72rem; color: var(--ink-dim); font-variant-numeric: tabular-nums; }
.tag__val--run { color: var(--run); }
.tag__val--ok  { color: var(--info); }

/* ------------------------------------------------------------------ hero */
.hero {
  position: relative;
  padding: clamp(3.5rem, 9vw, 6.5rem) 0 clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(120% 90% at 78% -10%, rgba(108,182,255,0.05), transparent 60%),
    radial-gradient(90% 70% at 10% 0%, rgba(69,196,110,0.04), transparent 55%);
}
.hero__tag {
  font-family: var(--mono); font-size: .74rem; letter-spacing: .18em;
  color: var(--ink-faint); margin: 0 0 1.4rem;
}
.hero__head { display: flex; align-items: center; flex-wrap: wrap; gap: 1rem; }
.hero__name {
  font-family: var(--mono); font-weight: 600;
  font-size: clamp(2.4rem, 7.5vw, 4.6rem);
  line-height: 1.02; letter-spacing: -0.01em;
  margin: 0; color: #fff;
}
.hero__pill {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--mono); font-size: .72rem; letter-spacing: .12em;
  color: var(--run);
  border: 1px solid color-mix(in srgb, var(--run) 40%, var(--line));
  border-radius: 100px; padding: .3rem .7rem .3rem .55rem;
  background: rgba(69,196,110,0.06);
}
.hero__role {
  font-family: var(--cond); font-weight: 600;
  font-size: clamp(1.05rem, 2.6vw, 1.35rem);
  color: var(--ink-dim); letter-spacing: .01em;
  margin: 1.1rem 0 0;
}
.hero__tagline {
  max-width: 62ch; font-size: clamp(1.02rem, 2.2vw, 1.2rem);
  color: var(--ink); margin: 1.3rem 0 0;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }

.btn {
  font-family: var(--mono); font-size: .82rem; font-weight: 500;
  letter-spacing: .02em;
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .72rem 1.15rem; border-radius: var(--radius);
  border: 1px solid var(--line); color: var(--ink);
  background: var(--panel);
  transition: border-color .18s ease, background .18s ease, transform .18s ease;
}
.btn:hover { border-color: var(--ink-faint); background: var(--panel-2); }
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: var(--run); color: #0c1410; border-color: var(--run); font-weight: 600;
}
.btn--primary:hover { background: #52d079; border-color: #52d079; }

/* readout strip ---------------------------------------------------------- */
.readouts {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; margin: 3rem 0 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft); border-radius: var(--radius);
  overflow: hidden;
}
.readout { background: var(--panel); padding: 1.1rem 1.15rem 1rem; margin: 0; }
.readout__tag {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .14em;
  color: var(--ink-faint); margin: 0 0 .55rem;
}
.readout__val {
  font-family: var(--mono); font-weight: 600;
  font-size: clamp(1.1rem, 2.2vw, 1.45rem);
  color: #fff; margin: 0; line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.readout__unit { color: var(--run); font-size: .68em; font-weight: 500; }
.readout__label {
  font-family: var(--cond); font-size: .8rem; color: var(--ink-dim);
  margin: .5rem 0 0;
}

/* ------------------------------------------------------------------ band */
.band { padding: clamp(3rem, 8vw, 5.5rem) 0; }
.band--alt { background: var(--bg-deep); border-block: 1px solid var(--line-soft); }
.band__head { max-width: 60ch; margin-bottom: 2.6rem; }
.band__title {
  font-family: var(--mono); font-weight: 600;
  font-size: clamp(1.5rem, 3.6vw, 2.1rem);
  color: #fff; margin: 0; letter-spacing: -0.01em;
}
.band__sub { color: var(--ink-dim); margin: .8rem 0 0; font-size: 1.05rem; }

/* units ------------------------------------------------------------------ */
.units {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--line-soft); border: 1px solid var(--line-soft);
  border-radius: var(--radius); overflow: hidden;
}
.unit {
  background: var(--panel); padding: 1.7rem 1.6rem;
  position: relative;
  transition: background .18s ease;
}
.unit:hover { background: var(--panel-2); }
.unit__tag {
  display: flex; align-items: center; gap: .5rem;
  font-family: var(--mono); font-size: .72rem; letter-spacing: .1em;
  color: var(--info); margin: 0 0 .9rem;
}
.unit__title {
  font-family: var(--sans); font-weight: 600; font-size: 1.16rem;
  color: #fff; margin: 0 0 .55rem; line-height: 1.25;
}
.unit__body { color: var(--ink-dim); margin: 0; font-size: .98rem; }

/* cards ------------------------------------------------------------------ */
.cards {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
}
.card {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--panel); overflow: hidden;
  transition: border-color .18s ease, transform .18s ease;
}
.card:hover { border-color: color-mix(in srgb, var(--run) 45%, var(--line)); transform: translateY(-2px); }
.card__link { display: flex; flex-direction: column; height: 100%; padding: 1.5rem 1.4rem; }
.card__top {
  display: flex; align-items: center; justify-content: space-between; gap: .5rem;
  font-family: var(--mono); font-size: .7rem; letter-spacing: .08em;
  margin-bottom: 1.1rem;
}
.card__tag { color: var(--attn); }
.card__kind { color: var(--ink-faint); }
.card__title {
  font-family: var(--sans); font-weight: 600; font-size: 1.22rem;
  color: #fff; margin-bottom: .5rem; line-height: 1.2;
}
.card__body { color: var(--ink-dim); font-size: .96rem; flex: 1 1 auto; }
.card__cta {
  font-family: var(--mono); font-size: .8rem; color: var(--run);
  margin-top: 1.3rem; display: inline-flex; align-items: center; gap: .4rem;
}
.card:hover .card__cta span { transform: translateX(3px); }
.card__cta span { transition: transform .18s ease; display: inline-block; }

/* channels --------------------------------------------------------------- */
.channels {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem;
}
.channel {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--panel); transition: border-color .18s ease;
}
.channel:hover { border-color: var(--ink-faint); }
.channel__link {
  display: grid; grid-template-columns: 1fr auto; align-items: center;
  column-gap: 1rem; row-gap: .2rem; padding: 1.35rem 1.5rem;
}
.channel__handle {
  font-family: var(--mono); font-weight: 500; font-size: 1.1rem; color: #fff;
  grid-column: 1;
}
.channel__line { color: var(--ink-dim); font-size: .95rem; grid-column: 1; }
.channel__go {
  grid-column: 2; grid-row: 1 / 3; align-self: center;
  color: var(--ink-faint); font-family: var(--mono); font-size: 1.2rem;
  transition: transform .18s ease, color .18s ease;
}
.channel:hover .channel__go { transform: translateX(3px); color: var(--run); }

/* ---------------------------------------------------------------- footer */
.site-footer {
  background: var(--bg-deep); border-top: 1px solid var(--line);
  padding: 2.6rem 0 2.2rem; font-family: var(--mono);
}
.site-footer__grid {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem;
}
.site-footer__id { display: flex; align-items: center; gap: .6rem; font-size: .85rem; flex-wrap: wrap; }
.site-footer__role { color: var(--ink-faint); font-family: var(--cond); font-size: .82rem; }
.site-footer__links { display: flex; gap: 1.4rem; flex-wrap: wrap; }
.site-footer__links a { color: var(--ink-dim); font-size: .8rem; transition: color .18s ease; }
.site-footer__links a:hover { color: var(--run); }
.site-footer__meta {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem;
  margin-top: 1.6rem; padding-top: 1.3rem; border-top: 1px solid var(--line-soft);
  color: var(--ink-faint); font-size: .74rem; letter-spacing: .04em;
}

/* --------------------------------------------------------------- prose */
.prose-band { padding: clamp(3rem, 8vw, 5rem) 0; }
.prose-band__title { font-family: var(--mono); font-weight: 600; color: #fff; font-size: clamp(1.8rem,4vw,2.6rem); margin: .6rem 0 0; }
.prose-band__meta { font-family: var(--mono); color: var(--ink-faint); font-size: .8rem; margin: .6rem 0 0; }
.prose { margin-top: 2rem; }
.prose p, .prose li { color: var(--ink); }
.prose h2, .prose h3 { font-family: var(--mono); color: #fff; }
.prose a { color: var(--info); text-decoration: underline; text-underline-offset: 3px; }
.post-list { list-style: none; padding: 0; margin: 2rem 0 0; }
.post-list__item { border-top: 1px solid var(--line-soft); }
.post-list__item a { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem 0; }
.post-list__date { font-family: var(--mono); color: var(--ink-faint); font-size: .8rem; }

/* --------------------------------------------------------- responsive */
@media (max-width: 820px) {
  .readouts { grid-template-columns: repeat(2, 1fr); }
  .units { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .channels { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .tag--hide-sm { display: none; }
  .statusbar__tags { gap: 1rem; }
  .hero__head { gap: .7rem; }
}