/* ============================================================
   v4t — CRT terminal theme
   Two-phosphor palette: green (primary) + amber (accent).
   Edit tokens below; everything else derives from them.
   ============================================================ */

:root {
  /* --- phosphor palette --- */
  --bg:          #040806;
  --bg-raised:   #061109;
  --bg-input:    #030705;
  --phos:        #3bf07a;
  --phos-bright: #c9ffdd;
  --phos-mid:    #24b459;
  --phos-dim:    #0f7a3c;
  --amber:       #ffb454;
  --amber-dim:   #9c6a24;
  --red:         #ff5f56;
  --rule:        rgba(59, 240, 122, 0.22);
  --rule-soft:   rgba(59, 240, 122, 0.10);

  /* --- type --- */
  --font-display: "VT323", "IBM Plex Mono", ui-monospace, monospace;
  --font-body: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  /* --- rhythm --- */
  --ch: 1ch;
  --gap: clamp(1.25rem, 3vw, 2.5rem);
  --section-y: clamp(3.5rem, 9vh, 6.5rem);
  --measure: 68ch;
  --statusbar-h: 2.25rem;

  --glow: 0 0 2px rgba(59, 240, 122, 0.55), 0 0 12px rgba(59, 240, 122, 0.18);
  --glow-strong: 0 0 3px rgba(201, 255, 221, 0.8), 0 0 16px rgba(59, 240, 122, 0.45);
}

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--statusbar-h) + 1rem); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--phos);
  font-family: var(--font-body);
  font-size: clamp(0.875rem, 0.8rem + 0.25vw, 1rem);
  line-height: 1.7;
  letter-spacing: 0.01em;
  text-shadow: var(--glow);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--phos); color: var(--bg); text-shadow: none; }

a { color: var(--phos-bright); text-decoration: none; border-bottom: 1px solid var(--rule); }
a:hover, a:focus-visible { color: var(--bg); background: var(--phos); text-shadow: none; border-color: var(--phos); }

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

/* ============================================================
   CRT overlay — scanlines, vignette, ambient glow, flicker
   ============================================================ */
.crt { position: fixed; inset: 0; pointer-events: none; z-index: 100; }

.crt__scanlines {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.28) 3px,
    rgba(0, 0, 0, 0.28) 4px
  );
  mix-blend-mode: multiply;
  opacity: 0.75;
}

.crt__vignette {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 100% at 50% 50%, rgba(0,0,0,0) 55%, rgba(0,0,0,0.55) 100%),
    linear-gradient(to bottom, rgba(4,8,6,0.7), rgba(4,8,6,0) 12%, rgba(4,8,6,0) 88%, rgba(4,8,6,0.7));
}

/* slow phosphor breathing + the occasional flicker */
.crt__glow {
  position: absolute; inset: 0;
  background: radial-gradient(80% 60% at 50% 0%, rgba(59, 240, 122, 0.07), transparent 70%);
  animation: flicker 7s steps(1, end) infinite;
}
@keyframes flicker {
  0%, 96%, 100% { opacity: 1; }
  97%           { opacity: 0.72; }
  98%           { opacity: 1; }
  99%           { opacity: 0.85; }
}

/* a faint horizontal sweep, like a refresh bar crawling the tube */
body::after {
  content: "";
  position: fixed; left: 0; right: 0; height: 28vh;
  top: -30vh;
  background: linear-gradient(to bottom, rgba(59,240,122,0) 0%, rgba(59,240,122,0.035) 50%, rgba(59,240,122,0) 100%);
  pointer-events: none; z-index: 99;
  animation: sweep 9s linear infinite;
}
@keyframes sweep { to { top: 130vh; } }

@media (prefers-reduced-motion: reduce) {
  .crt__glow { animation: none; }
  body::after { display: none; }
}

/* ============================================================
   Layout primitives
   ============================================================ */
main { max-width: 78rem; margin: 0 auto; padding: 0 var(--gap); }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--phos); color: var(--bg); padding: 0.5rem 1rem; z-index: 200;
}
.skip:focus { left: 0.5rem; top: 0.5rem; }

/* Real heading text for crawlers and screen readers, hidden visually.
   The terminal commands stay as the visible design. */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   Status bar (tmux-style)
   ============================================================ */
.statusbar {
  position: sticky; top: 0; z-index: 90;
  display: flex; align-items: center; gap: 0.35rem;
  height: var(--statusbar-h);
  padding: 0 var(--gap);
  background: rgba(4, 8, 6, 0.92);
  backdrop-filter: blur(3px);
  border-bottom: 1px solid var(--rule);
  font-size: 0.8125rem;
  white-space: nowrap;
}
.statusbar__cell--brand { color: var(--amber); font-weight: 600; }
.statusbar__sep { color: var(--phos-dim); }

.statusbar__nav { display: flex; gap: 1.15rem; margin-left: auto; overflow-x: auto; scrollbar-width: none; }
.statusbar__nav::-webkit-scrollbar { display: none; }
.statusbar__nav a { border: 0; color: var(--phos); opacity: 0.85; }
.statusbar__nav a::before { content: "["; color: var(--phos-dim); }
.statusbar__nav a::after  { content: "]"; color: var(--phos-dim); }
.statusbar__nav a:hover, .statusbar__nav a:focus-visible { background: none; color: var(--phos-bright); opacity: 1; text-shadow: var(--glow-strong); }

.statusbar__cell--status { margin-left: 1.5rem; color: var(--phos-mid); display: flex; align-items: center; gap: 0.4rem; }
.dot {
  width: 0.5rem; height: 0.5rem; border-radius: 50%;
  background: var(--phos); box-shadow: 0 0 6px var(--phos);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
@media (prefers-reduced-motion: reduce) { .dot { animation: none; } }

@media (max-width: 46rem) {
  .statusbar__cell--status, .statusbar__cell:not(.statusbar__cell--brand) { display: none; }
  .statusbar__cell--brand { display: inline; }
}

/* --- language dropdown -----------------------------------------------------
   Built on <details> so it opens and closes with no JavaScript. boot.js only
   adds outside-click and Escape dismissal on top. */
.langpicker { position: relative; margin-left: 1.25rem; flex: 0 0 auto; }

.langpicker > summary {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.1rem 0.4rem;
  border: 1px solid var(--rule);
  cursor: pointer;
  list-style: none;
  transition: border-color 0.15s ease;
}
.langpicker > summary::-webkit-details-marker { display: none; }
.langpicker > summary::marker { content: ""; }
.langpicker > summary:hover,
.langpicker > summary:focus-visible,
.langpicker[open] > summary { border-color: var(--phos); }

.langpicker__caret {
  font-size: 0.6rem; color: var(--phos-dim); line-height: 1;
  transition: transform 0.15s ease, color 0.15s ease;
}
.langpicker > summary:hover .langpicker__caret,
.langpicker[open] .langpicker__caret { color: var(--phos); }
.langpicker[open] .langpicker__caret { transform: rotate(180deg); }

.langpicker__menu {
  position: absolute; top: calc(100% + 4px); right: 0; z-index: 95;
  margin: 0; padding: 0; list-style: none;
  min-width: max-content;
  background: var(--bg-raised);
  border: 1px solid var(--phos);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.75);
}
.langpicker__menu a {
  display: flex; align-items: center; gap: 0.55rem;
  padding: 0.4rem 0.7rem;
  border: 0;
  font-size: 0.8125rem; letter-spacing: 0.06em;
  color: var(--phos);
  white-space: nowrap;
}
.langpicker__menu a:hover, .langpicker__menu a:focus-visible {
  background: var(--phos); color: var(--bg); text-shadow: none;
}
.langpicker__menu a.is-active { color: var(--phos-bright); }
.langpicker__menu a.is-active::after { content: "\2713"; margin-left: auto; padding-left: 0.75rem; }
.langpicker__code { font-weight: 600; }
.langpicker__name { color: inherit; opacity: 0.7; }
.langpicker__menu a:hover .langpicker__name { opacity: 1; }

/* Flags are the only full-colour artwork on the page. Desaturate the closed
   trigger so it sits inside the phosphor palette; full colour in the menu. */
.flag {
  width: 1.15rem; height: 0.62rem; display: block; flex: 0 0 auto;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.5);
}
.langpicker > summary .flag { filter: saturate(0.55) brightness(0.85); transition: filter 0.15s ease; }
.langpicker > summary:hover .flag,
.langpicker[open] > summary .flag { filter: none; }

@media (max-width: 46rem) {
  .langpicker { margin-left: auto; }
}
}


/* ============================================================
   Boot / hero
   ============================================================ */
.boot {
  padding: clamp(2.5rem, 8vh, 5rem) 0 var(--section-y);
  min-height: calc(100svh - var(--statusbar-h));
  display: flex; flex-direction: column; justify-content: center;
}

.boot__log {
  margin: 0 0 clamp(1.5rem, 5vh, 3rem);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--phos-mid);
  white-space: pre-wrap;
}
.boot__log .line { display: block; }
.prompt { color: var(--amber); }
.ok     { color: var(--phos); }
.warn   { color: var(--amber); }

.banner { margin: 0; }
.banner pre {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(0.36rem, 2.05vw, 1.3rem);
  line-height: 1.08;
  font-weight: 600;
  color: var(--phos-bright);
  text-shadow: var(--glow-strong);
  overflow: hidden;
}

.tagline {
  margin: clamp(1rem, 3vh, 1.75rem) 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5.5vw, 3.25rem);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--amber);
  text-transform: lowercase;
  text-shadow: 0 0 2px rgba(255,180,84,0.6), 0 0 18px rgba(255,180,84,0.25);
}

.lede { max-width: var(--measure); margin: 1.25rem 0 0; color: var(--phos); }

.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: clamp(1.75rem, 5vh, 2.75rem) 0 0; }

.cursorline { margin: clamp(2rem, 6vh, 3.5rem) 0 0; color: var(--amber); font-size: 0.875rem; }
.cursor {
  display: inline-block; width: 0.6em; height: 1.05em; vertical-align: text-bottom;
  background: var(--phos); box-shadow: 0 0 8px var(--phos);
  animation: blink 1.05s steps(1, end) infinite;
}
@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.6rem 1.15rem;
  border: 1px solid var(--phos);
  background: transparent;
  color: var(--phos-bright);
  font: inherit; font-weight: 500;
  text-shadow: var(--glow);
  cursor: pointer;
  position: relative;
  transition: background 0.12s linear, color 0.12s linear, box-shadow 0.18s ease;
}
.btn::before { content: ""; }
.btn:hover, .btn:focus-visible {
  background: var(--phos); color: var(--bg); text-shadow: none;
  box-shadow: 0 0 18px rgba(59, 240, 122, 0.35);
}
.btn--ghost { border-color: var(--rule); color: var(--phos-mid); }
.btn--ghost:hover, .btn--ghost:focus-visible { border-color: var(--phos); }
.btn--submit { margin-top: 0.5rem; }
.btn[aria-disabled="true"], .btn:disabled { opacity: 0.55; pointer-events: none; }

.btn__spin { display: none; width: 0.75em; height: 0.75em; border: 1px solid currentColor; border-top-color: transparent; border-radius: 50%; }
.btn.is-busy .btn__spin { display: inline-block; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   Sections
   ============================================================ */
.pane-section { padding: var(--section-y) 0; border-top: 1px solid var(--rule-soft); }

.cmd {
  margin: 0 0 0.5rem;
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.25rem);
  font-weight: 500;
  color: var(--phos-bright);
  letter-spacing: 0.02em;
}
.cmd .prompt { color: var(--amber); }

.section-lede { max-width: var(--measure); margin: 0 0 clamp(1.75rem, 5vh, 2.75rem); color: var(--phos-mid); }
.cmd + .grid, .cmd + .stack, .cmd + .about, .cmd + .contact { margin-top: clamp(1.75rem, 5vh, 2.75rem); }

/* --- reveal on scroll --- */
.reveal { opacity: 0; transform: translateY(14px); }
.reveal.is-visible { opacity: 1; transform: none; transition: opacity 0.5s ease-out, transform 0.5s ease-out; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }
.no-js .reveal { opacity: 1; transform: none; }

/* ============================================================
   Services grid — ASCII-boxed panes
   ============================================================ */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  gap: 1px;
  background: var(--rule-soft);
  border: 1px solid var(--rule);
}

.pane {
  background: var(--bg);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  position: relative;
  transition: background 0.2s ease;
}
.pane:hover { background: var(--bg-raised); }

.pane__title {
  margin: 0 0 0.85rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--amber);
  letter-spacing: 0.04em;
  display: flex; align-items: baseline; gap: 0.5rem;
}
.pane__title::before {
  content: "▸";
  color: var(--phos-dim);
  transition: color 0.2s ease, transform 0.2s ease;
}
.pane:hover .pane__title::before { color: var(--phos); transform: translateX(2px); }

.pane__body { margin: 0 0 1rem; color: var(--phos); opacity: 0.92; }

.pane__list { margin: 0; padding: 0; list-style: none; font-size: 0.8125rem; color: var(--phos-mid); }
.pane__list li { padding-left: 1.25rem; position: relative; line-height: 1.75; }
.pane__list li::before { content: "·"; position: absolute; left: 0.35rem; color: var(--phos-dim); }

/* ============================================================
   Stack table
   ============================================================ */
.stack { margin: 0; display: grid; gap: 0; border-top: 1px solid var(--rule-soft); }
.stack__row {
  display: grid;
  grid-template-columns: minmax(9rem, 14ch) 1fr;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule-soft);
  align-items: baseline;
}
.stack dt { color: var(--amber-dim); font-size: 0.8125rem; letter-spacing: 0.06em; text-transform: uppercase; }
.stack dd { margin: 0; display: flex; flex-wrap: wrap; gap: 0.4rem 0.5rem; }
.stack dd span {
  border: 1px solid var(--rule);
  padding: 0.1rem 0.55rem;
  font-size: 0.8125rem;
  color: var(--phos);
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.stack dd span:hover { border-color: var(--phos); color: var(--bg); background: var(--phos); text-shadow: none; }

@media (max-width: 34rem) {
  .stack__row { grid-template-columns: 1fr; gap: 0.5rem; }
}

/* ============================================================
   About
   ============================================================ */
.about { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: clamp(1.5rem, 5vw, 4rem); align-items: start; }
@media (max-width: 52rem) { .about { grid-template-columns: 1fr; } }

.about__text p { max-width: var(--measure); margin: 0 0 1.1rem; }
.about__text strong { color: var(--amber); font-weight: 600; }

.about__facts { margin: 0; padding: 1rem 1.25rem; list-style: none; border: 1px solid var(--rule); background: var(--bg-raised); font-size: 0.8125rem; }
.about__facts li { display: flex; justify-content: space-between; gap: 1rem; padding: 0.4rem 0; border-bottom: 1px dashed var(--rule-soft); }
.about__facts li:last-child { border-bottom: 0; }
.about__facts .k { color: var(--amber-dim); text-transform: uppercase; letter-spacing: 0.06em; }
.about__facts .v { color: var(--phos-bright); text-align: right; }

/* ============================================================
   Contact
   ============================================================ */
.contact { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: clamp(1.5rem, 5vw, 4rem); align-items: start; }
@media (max-width: 52rem) { .contact { grid-template-columns: 1fr; } }

/* Only the direct-contact block is showing (form disabled): do not let it
   stretch across the wide first column. */
.contact__direct__only { grid-template-columns: minmax(0, 32rem); }

.field { margin-bottom: 1.1rem; }
.field label { display: block; font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--amber-dim); margin-bottom: 0.35rem; }
.field .opt { text-transform: none; letter-spacing: 0; color: var(--phos-dim); }

.input-wrap {
  display: flex; align-items: center; gap: 0.5rem;
  border: 1px solid var(--rule);
  background: var(--bg-input);
  padding: 0 0.7rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.input-wrap--area { align-items: flex-start; padding-top: 0.55rem; }
.input-wrap:focus-within { border-color: var(--phos); box-shadow: 0 0 14px rgba(59, 240, 122, 0.18); }
.caret { color: var(--phos-dim); user-select: none; line-height: 2.5; }
.input-wrap--area .caret { line-height: 1.7; }

.input-wrap input, .input-wrap textarea {
  flex: 1; min-width: 0;
  background: transparent; border: 0; outline: 0;
  color: var(--phos-bright);
  font: inherit;
  text-shadow: var(--glow);
  padding: 0.55rem 0;
  resize: vertical;
}
.input-wrap input::placeholder, .input-wrap textarea::placeholder { color: var(--phos-dim); opacity: 0.7; }
.input-wrap.is-error { border-color: var(--red); }

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form__status { min-height: 1.5rem; margin: 0.85rem 0 0; font-size: 0.875rem; }
.form__status.is-ok  { color: var(--phos-bright); }
.form__status.is-err { color: var(--red); text-shadow: 0 0 8px rgba(255,95,86,0.35); }

.direct { border: 1px solid var(--rule); background: var(--bg-raised); padding: clamp(1.1rem, 3vw, 1.5rem); }
.direct__title { margin: 0 0 0.9rem; font-size: 0.8125rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--phos-dim); font-weight: 500; }
.direct dl { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 0.5rem 1rem; font-size: 0.875rem; }
.direct dt { color: var(--amber-dim); text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.06em; padding-top: 0.15rem; }
.direct dd { margin: 0; color: var(--phos-bright); overflow-wrap: anywhere; }
.direct__note { margin: 1.1rem 0 0; font-size: 0.8125rem; color: var(--phos-dim); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  align-items: center; justify-content: center;
  max-width: 78rem; margin: 0 auto;
  padding: 2rem var(--gap) 3rem;
  border-top: 1px solid var(--rule-soft);
  font-size: 0.75rem;
  color: var(--phos-dim);
  letter-spacing: 0.04em;
}
.footer__sep { opacity: 0.5; }
.footer__uptime::before { content: "● "; color: var(--phos-mid); }

/* ============================================================
   Scrollbar
   ============================================================ */
* { scrollbar-width: thin; scrollbar-color: var(--phos-dim) var(--bg); }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--phos-dim); border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--phos-mid); }