/* athex.css — dark pixel terminal, lit from behind by the backdrop. */

:root {
  --accent: #2ff0ff;
  --accent-soft: rgba(47, 240, 255, 0.16);
  --ink: #dbe7f5;
  --ink-dim: #7c8ba6;
  --ink-faint: #4d5a72;
  --panel: rgba(6, 10, 22, 0.82);
  --panel-solid: #060a16;
  --edge: rgba(120, 170, 220, 0.16);
  --edge-lit: rgba(47, 240, 255, 0.5);
  --danger: #ff5a5a;
  --ok: #6bff9e;
  --dim: 0.55;
  /* The reading column. Chrome spans the viewport; content lines up inside. */
  --col: 940px;
  --gutter: clamp(10px, 2.5vw, 22px);
  --msg-size: 16px;
  --px: "Press Start 2P", "Silkscreen", ui-monospace, monospace;
  --term: "Silkscreen", "VT323", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --read: "VT323", "Silkscreen", ui-monospace, Consolas, monospace;
}

* { box-sizing: border-box; }

/* Several elements below set a display value, which would otherwise win
   against the hidden attribute. Panels are toggled with .hidden throughout. */
[hidden] { display: none !important; }

html, body {
  height: 100%;
  margin: 0;
  background: #04060e;
  color: var(--ink);
  font-family: var(--term);
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

body { text-rendering: geometricPrecision; }

/* ------------------------------------------------------------- backdrop */

#backdrop { position: fixed; inset: 0; z-index: 0; overflow: hidden; }

#scene {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  /* Cover rather than stretch: in portrait the scene is much wider than the
     viewport, and stretching it would smear the skyline sideways. */
  object-fit: cover;
  /* The scene is authored at 180px tall; this is what keeps the pixels hard. */
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* A wash of black over the art so text stays readable; the dim slider drives it. */
#backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background: #01030a;
  opacity: var(--dim);
  pointer-events: none;
}

.scanlines, .vignette, .grain { position: absolute; inset: 0; pointer-events: none; }

.scanlines {
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.34) 0px, rgba(0, 0, 0, 0.34) 1px,
    rgba(0, 0, 0, 0) 1px,  rgba(0, 0, 0, 0) 3px
  );
  opacity: 0.4;
  z-index: 3;
}
body.no-scan .scanlines { display: none; }

.vignette {
  z-index: 4;
  background:
    radial-gradient(120% 90% at 50% 45%, rgba(0,0,0,0) 40%, rgba(0,0,0,0.72) 100%);
}

.grain {
  z-index: 2;
  opacity: 0.05;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/></filter><rect width='120' height='120' filter='url(%23n)'/></svg>");
}

/* Applied to everything rather than a hand-kept list of selectors: the list
   kept missing one (the composer, last time) and the platform scrollbar with
   its arrow buttons is jarring against the rest of this. */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--edge) transparent;
}
*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--edge); }
*::-webkit-scrollbar-thumb:hover { background: var(--edge-lit); }
*::-webkit-scrollbar-corner { background: transparent; }
/* The little arrow buttons at each end. */
*::-webkit-scrollbar-button { display: none; }

/* ---------------------------------------------------------------- veils */

.veil {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 24px 18px;
  overflow-y: auto;
  background: radial-gradient(90% 70% at 50% 40%, rgba(2,4,10,0.55), rgba(2,4,10,0.9));
  animation: fade-in 0.5s ease both;
}

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

.panel {
  width: 100%;
  max-width: 480px;
  padding: 28px 26px 24px;
  background: var(--panel);
  border: 1px solid var(--edge);
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.6),
    0 0 42px rgba(0, 0, 0, 0.7),
    inset 0 0 60px rgba(47, 240, 255, 0.035);
  backdrop-filter: blur(3px);
  /* Corner notches — cheap, and it reads as a HUD frame rather than a card. */
  clip-path: polygon(
    10px 0, calc(100% - 10px) 0, 100% 10px,
    100% calc(100% - 10px), calc(100% - 10px) 100%,
    10px 100%, 0 calc(100% - 10px), 0 10px
  );
}

.door-panel { max-width: 380px; text-align: center; }

.sigil {
  font-size: 26px;
  color: var(--accent);
  text-shadow: 0 0 14px var(--accent);
  animation: throb 3.4s ease-in-out infinite;
}
@keyframes throb { 0%,100% { opacity: 0.5; } 50% { opacity: 1; } }

.wordmark {
  font-family: var(--px);
  font-size: 26px;
  letter-spacing: 5px;
  margin: 12px 0 6px;
  color: #eef7ff;
  text-shadow:
    0 0 6px var(--accent),
    0 0 22px rgba(47, 240, 255, 0.45),
    2px 2px 0 rgba(0, 0, 0, 0.9);
}

.lobby-head { text-align: center; margin-bottom: 18px; }

.subtitle {
  font-family: var(--term);
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--ink-dim);
  margin: 0 0 4px;
  text-transform: lowercase;
}

/* One plain sentence carries the lobby; the detail lives behind the toggle. */
.blurb {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-dim);
  text-align: center;
}
.blurb em { color: var(--ink); font-style: normal; font-weight: 700; }

.lbl-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.lbl-row .lbl { margin-bottom: 7px; }

.linkbtn {
  padding: 0;
  font-family: var(--term);
  font-size: 12.5px;
  letter-spacing: 1px;
  color: var(--ink-dim);
  background: none;
  border: 0;
  border-bottom: 1px dotted var(--ink-faint);
  cursor: pointer;
  transition: color 0.18s, border-color 0.18s;
}
.linkbtn:hover { color: var(--accent); border-bottom-color: var(--accent); }
.linkbtn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.how { margin-top: 20px; }
.how summary {
  font-family: var(--term);
  font-size: 12.5px;
  letter-spacing: 1.5px;
  color: var(--ink-faint);
  cursor: pointer;
  list-style: none;
  text-align: center;
  padding: 6px;
  transition: color 0.18s;
}
.how summary::-webkit-details-marker { display: none; }
/* Plain ASCII marks: the pixel fonts have no geometric-shape glyphs. */
.how summary::after { content: "  +"; }
.how[open] summary::after { content: "  -"; }
.how summary:hover { color: var(--ink-dim); }
.how .ledger { margin: 10px 0 0; }

.ledger {
  list-style: none;
  counter-reset: l;
  margin: 0 0 20px;
  padding: 14px 14px 14px 16px;
  border-left: 2px solid var(--edge-lit);
  background: rgba(255, 255, 255, 0.022);
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-dim);
}
.ledger li { counter-increment: l; margin-bottom: 6px; }
.ledger li:last-child { margin-bottom: 0; }
.ledger li::before {
  content: "0" counter(l) " ";
  color: var(--accent);
  font-family: var(--px);
  font-size: 8px;
  margin-right: 8px;
  opacity: 0.85;
}
.ledger b { color: var(--ink); font-weight: 700; }

/* ------------------------------------------------------------- controls */

.lbl {
  display: block;
  font-family: var(--px);
  font-size: 8px;
  letter-spacing: 2px;
  color: var(--ink-faint);
  margin: 16px 0 7px;
  text-transform: uppercase;
}

.field {
  width: 100%;
  padding: 12px 12px;
  color: var(--ink);
  background: rgba(2, 5, 12, 0.75);
  border: 1px solid var(--edge);
  border-radius: 0;
  font-family: var(--term);
  font-size: 15px;
  letter-spacing: 1px;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
}
.field::placeholder { color: var(--ink-faint); }
.field:focus {
  border-color: var(--edge-lit);
  box-shadow: 0 0 0 1px var(--accent-soft), 0 0 18px rgba(47,240,255,0.14);
}

/* The forged phrase is ~40 characters and has to fit without truncating,
   since reading it off the screen is one way people pass it along. */
#phrase { font-size: 13px; letter-spacing: 0.3px; }

.row { display: flex; gap: 8px; align-items: stretch; }
.row .field { flex: 1; min-width: 0; }

.btn {
  font-family: var(--px);
  font-size: 9px;
  letter-spacing: 2px;
  padding: 11px 14px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--edge);
  cursor: pointer;
  transition: transform 0.08s, background 0.18s, border-color 0.18s, color 0.18s;
  white-space: nowrap;
}
.btn:hover { border-color: var(--edge-lit); color: #fff; background: rgba(47,240,255,0.08); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn[disabled] { opacity: 0.4; cursor: not-allowed; }

.btn.primary {
  color: #02121a;
  background: var(--accent);
  border-color: var(--accent);
  text-shadow: none;
  box-shadow: 0 0 20px rgba(47, 240, 255, 0.35);
}
.btn.primary:hover { background: #7df6ff; color: #02121a; }
.btn.ghost { background: transparent; color: var(--ink-dim); }
.btn.danger { color: var(--danger); border-color: rgba(255, 90, 90, 0.4); }
.btn.danger:hover { background: rgba(255, 90, 90, 0.12); color: #ffb3b3; border-color: var(--danger); }
.btn.wide { width: 100%; margin-top: 14px; padding: 13px; }
.btn.icon { font-size: 13px; font-family: var(--term); padding: 10px 12px; line-height: 1; }

.warn {
  margin: 9px 0 0;
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: 0.5px;
  color: var(--danger);
}

/* Shown in a room nobody else has joined yet. This is the moment the invite
   link is actually wanted, so it is offered here rather than in a drawer. */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: auto 0;
  padding: 28px 0;
  text-align: center;
}
.empty-state .hint { text-shadow: 0 1px 4px rgba(0, 0, 0, 0.95); }
.empty-state .btn { padding: 12px 20px; }

.hint { font-size: 13px; color: var(--ink-faint); letter-spacing: 1px; margin: 0; }
.status { margin-top: 12px; min-height: 18px; text-align: center; }
.status.working { color: var(--accent); }
.error { color: var(--danger); font-size: 13px; min-height: 18px; margin: 12px 0 0; letter-spacing: 1px; }

.fineprint {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-faint);
  letter-spacing: 0.5px;
}

/* ----------------------------------------------------------------- room */

#room {
  position: relative;
  z-index: 10;
  height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* Every row runs the full width of the screen so backgrounds, borders and the
   scrollbar reach the edges, while this padding parks the content itself in a
   centred column. One formula on every row keeps them all on the same
   left and right edges. */
.bar,
#stream,
.typing,
#composer {
  padding-inline: max(var(--gutter), calc((100% - var(--col)) / 2));
}

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-block: 12px 10px;
  border-bottom: 1px solid var(--edge);
  background: linear-gradient(to bottom, rgba(3, 6, 14, 0.92), rgba(3, 6, 14, 0.55));
  backdrop-filter: blur(6px);
}
.bar-left, .bar-right { display: flex; align-items: center; gap: 9px; }

.brand {
  font-family: var(--px);
  font-size: 12px;
  letter-spacing: 4px;
  color: #eef7ff;
  text-shadow: 0 0 10px var(--accent);
}
.sep { color: var(--ink-faint); }
.tag { font-size: 13px; color: var(--accent); letter-spacing: 2px; opacity: 0.85; }

/* One chip carries the live dot and the headcount. A bare number in a box
   told nobody anything; the word beside it does the work. */
.link-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 11px 5px 9px;
  font-size: 12.5px;
  letter-spacing: 1px;
  color: var(--ink-dim);
  border: 1px solid var(--edge);
  background: rgba(255, 255, 255, 0.02);
  white-space: nowrap;
}
.link-chip .dot { flex: none; }

.dot {
  width: 8px; height: 8px;
  background: var(--ink-faint);
  box-shadow: 0 0 8px currentColor;
  transition: background 0.3s;
}
.dot.live { background: var(--ok); }
.dot.down { background: var(--danger); animation: throb 1s ease-in-out infinite; }

/* --------------------------------------------------------------- stream */

#stream {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding-block: 14px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overscroll-behavior: contain;
}

/* Each message is a column: the byline above, the bubble below. Mine flip to
   the right. Nothing sits behind them but the artwork, so the bubble itself
   has to carry every bit of the contrast. */
.msg {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  animation: land 0.22s ease both;
  transition: opacity 0.6s;
}
@keyframes land { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.msg.mine { align-items: flex-end; }
.msg.grouped .who { display: none; }

.who {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 12px 3px 1px;
  font-family: var(--px);
  font-size: 8.5px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  /* Bylines sit straight on the artwork, so they need their own legibility. */
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.95), 0 0 2px rgba(0, 0, 0, 0.9);
}

.who .fp {
  font-family: var(--term);
  font-size: 10px;
  letter-spacing: 1px;
  opacity: 0.5;
  text-transform: none;
}
.who .stamp {
  font-family: var(--term);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--ink-faint);
}
body.no-stamps .stamp { display: none; }

.body {
  display: block;
  max-width: min(560px, 76%);
  padding: 9px 13px 10px;
  font-family: var(--read);
  font-size: var(--msg-size);
  line-height: 1.5;
  color: var(--ink);
  background: rgba(4, 8, 18, 0.84);
  border: 1px solid var(--edge);
  box-shadow: 0 3px 20px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  word-wrap: break-word;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.msg.mine .body {
  background: rgba(9, 26, 38, 0.84);
  /* Tints with whichever backdrop is loaded, rather than a fixed cyan. */
  background: color-mix(in srgb, var(--accent) 13%, rgba(4, 8, 18, 0.88));
  border-color: var(--edge-lit);
}

.body a { color: var(--accent); text-underline-offset: 3px; }

.msg.fading { opacity: 0.4; }

.msg .unverified {
  color: #ffb020;
  font-size: 10px;
}

/* Divider rules either side of the label, rather than dashes in the string. */
.msg.system {
  flex-direction: row;
  align-items: center;
  gap: 12px;
  width: 100%;
  margin: 14px 0 6px;
  font-family: var(--term);
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--ink-faint);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
}
.msg.system::before,
.msg.system::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--edge-lit), transparent);
  opacity: 0.5;
}

.msg.broken {
  padding: 9px 13px;
  font-family: var(--term);
  font-size: 12.5px;
  letter-spacing: 1px;
  color: var(--danger);
  background: rgba(20, 4, 8, 0.82);
  border: 1px solid rgba(255, 90, 90, 0.35);
  backdrop-filter: blur(4px);
}

.typing {
  min-height: 17px;
  padding-block: 0 2px;
  /* Three long names can outrun a phone; clip rather than reflow the room. */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
  font-size: 12.5px;
  letter-spacing: 1px;
  color: var(--ink-dim);
}

/* ------------------------------------------------------------- composer */

#composer {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  padding-block: 12px max(12px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--edge);
  background: linear-gradient(to top, rgba(3, 6, 14, 0.94), rgba(3, 6, 14, 0.5));
  backdrop-filter: blur(6px);
}

#input {
  flex: 1;
  resize: none;
  max-height: 150px;
  padding: 12px 13px;
  color: var(--ink);
  background: rgba(2, 5, 12, 0.72);
  border: 1px solid var(--edge);
  font-family: var(--read);
  font-size: calc(var(--msg-size) + 1px);
  line-height: 1.4;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
}
#input::placeholder { color: var(--ink-faint); }
#input:focus {
  border-color: var(--edge-lit);
  box-shadow: 0 0 0 1px var(--accent-soft), 0 0 20px rgba(47,240,255,0.12);
}
/* No scrollbar on the composer at all. The caret is always in view while you
   type, so the bar is decoration on a box that is four lines tall. It still
   scrolls, it just does it silently. */
#input { scrollbar-width: none; }
#input::-webkit-scrollbar { display: none; }

#send { padding: 13px 18px; font-size: 12px; }

/* ------------------------------------------------------------- settings */

#settings {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 30;
  width: min(330px, 88vw);
  height: 100dvh;
  overflow-y: auto;
  padding: 18px 20px 40px;
  background: rgba(4, 7, 16, 0.95);
  border-left: 1px solid var(--edge-lit);
  box-shadow: -20px 0 60px rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  animation: slide-in 0.22s ease both;
}
@keyframes slide-in { from { transform: translateX(100%); } to { transform: none; } }

.settings-head { display: flex; align-items: center; justify-content: space-between; }
.settings-head h2 {
  font-family: var(--px);
  font-size: 11px;
  letter-spacing: 3px;
  margin: 6px 0;
  color: var(--accent);
}

.group {
  font-family: var(--px);
  font-size: 8px;
  letter-spacing: 2.5px;
  color: var(--ink-faint);
  margin: 24px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--edge);
}

.theme-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.swatch {
  position: relative;
  padding: 9px 9px 10px;
  text-align: left;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--edge);
  transition: border-color 0.18s, background 0.18s, transform 0.08s;
}
.swatch:hover { background: rgba(255, 255, 255, 0.07); }
.swatch:active { transform: translateY(1px); }
.swatch[aria-pressed="true"] {
  border-color: var(--sw, var(--accent));
  box-shadow: inset 0 0 22px rgba(255, 255, 255, 0.05), 0 0 14px rgba(0,0,0,0.6);
}
.swatch .bead {
  display: block;
  width: 100%;
  height: 4px;
  margin-bottom: 7px;
  background: var(--sw);
  box-shadow: 0 0 10px var(--sw);
}
.swatch .name {
  display: block;
  font-family: var(--px);
  font-size: 7.5px;
  letter-spacing: 1px;
  color: var(--ink);
  line-height: 1.5;
}
.swatch .blurb {
  display: block;
  margin-top: 5px;
  font-size: 11px;
  color: var(--ink-faint);
  line-height: 1.3;
}

.ctl {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 12px 0;
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--ink-dim);
}
.ctl input[type="range"] { flex: 1; max-width: 60%; accent-color: var(--accent); }
.ctl input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent); }

/* ---------------------------------------------------------------- toast */

.toast {
  position: fixed;
  /* Centred with auto margins rather than translateX(-50%), because the land
     animation settles on transform:none and would wipe the centering out. */
  left: 0;
  right: 0;
  width: fit-content;
  max-width: calc(100% - 32px);
  margin-inline: auto;
  bottom: 84px;
  z-index: 60;
  text-align: center;
  padding: 10px 16px;
  font-family: var(--px);
  font-size: 8.5px;
  letter-spacing: 2px;
  color: #02121a;
  background: var(--accent);
  box-shadow: 0 0 26px rgba(47, 240, 255, 0.4);
  animation: land 0.2s ease both;
}
.toast.bad { background: var(--danger); color: #1a0202; box-shadow: 0 0 26px rgba(255,90,90,0.4); }

/* --------------------------------------------------------------- mobile */

@media (max-width: 560px) {
  .wordmark { font-size: 20px; letter-spacing: 3px; }
  .panel { padding: 22px 18px; }
  .theme-grid { grid-template-columns: 1fr; }
  .brand { font-size: 10px; letter-spacing: 2px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}