/* ── cnats · message-bus console ─────────────────────────────────────────
   dark phosphor terminal: deep green-black ground, mint signal, amber id.
   type: Archivo (UI voice) + IBM Plex Mono (wire voice). */

:root {
  --ink-0: #060a09;
  --ink-1: #0b1210;
  --ink-2: #101a17;
  --ink-3: #16241f;
  --line: #1e332c;
  --line-hot: #2c4a3f;
  --text: #d7e6df;
  --text-dim: #7d968c;
  --text-faint: #4d6159;
  --signal: #4ef0b1;
  --signal-dim: #2a8f6c;
  --amber: #ffb454;
  --alarm: #ff6b6b;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sans: "Archivo", system-ui, sans-serif;
}

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

html, body { height: 100%; }

body {
  font-family: var(--sans);
  background: var(--ink-0);
  color: var(--text);
  overflow: hidden;
}

/* phosphor atmosphere: faint scanlines + vignette over everything */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  background:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.015) 0 1px, transparent 1px 3px),
    radial-gradient(ellipse 120% 90% at 50% 40%, transparent 55%, rgba(0, 0, 0, 0.45));
}

::selection { background: var(--signal); color: var(--ink-0); }

/* ── gate (login / 404 / loading) ──────────────────────────────────────── */

.gate {
  height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  background:
    radial-gradient(ellipse 60% 45% at 50% 0%, rgba(78, 240, 177, 0.07), transparent 70%),
    linear-gradient(var(--ink-0), var(--ink-1));
}

.gate-loading {
  font-family: var(--mono);
  color: var(--signal-dim);
  animation: blink 1.1s steps(2) infinite;
}

.gate-card {
  width: min(30rem, 100%);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--ink-2), var(--ink-1) 60%);
  padding: 3rem 2.75rem 2.5rem;
  position: relative;
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.55);
  animation: rise 0.5s cubic-bezier(0.2, 0.9, 0.3, 1) both;
}

/* corner ticks, oscilloscope style */
.gate-card::before,
.gate-card::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--signal);
}
.gate-card::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.gate-card::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.gate-badge {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.28em;
  color: var(--signal-dim);
  margin-bottom: 1.5rem;
}

.gate-title {
  font-size: clamp(3.2rem, 9vw, 4.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 0.95;
}

.gate-title-accent { color: var(--signal); }

.gate-sub {
  margin: 1.1rem 0 2rem;
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 24rem;
}

.gate-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: var(--ink-0);
  background: var(--signal);
  text-decoration: none;
  padding: 0.85rem 1.4rem;
  border: 1px solid var(--signal);
  transition: background 120ms, color 120ms, box-shadow 120ms;
}

.gate-btn:hover {
  background: transparent;
  color: var(--signal);
  box-shadow: 0 0 24px rgba(78, 240, 177, 0.25), inset 0 0 12px rgba(78, 240, 177, 0.08);
}

.gate-btn-glyph { font-size: 1.05rem; }

.gate-meta {
  display: flex;
  gap: 1.6rem;
  margin-top: 2.4rem;
  padding-top: 1.2rem;
  border-top: 1px dashed var(--line);
}

.gate-meta dt {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.3rem;
}

.gate-meta dd code {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--amber);
}

/* ── console layout ────────────────────────────────────────────────────── */

.console {
  display: grid;
  grid-template-columns: 17rem 1fr;
  height: 100vh;
}

/* rail */

.rail {
  background: var(--ink-1);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 0 1rem;
  min-height: 0;
}

.wordmark {
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  padding: 0 1.4rem 1.4rem;
  border-bottom: 1px solid var(--line);
}

.wordmark-accent { color: var(--signal); }

.wordmark-sub {
  display: block;
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--text-faint);
  margin-top: 0.35rem;
  text-transform: uppercase;
}

.rail-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: var(--text-faint);
  padding: 1.4rem 1.4rem 0.6rem;
}

.rooms { display: flex; flex-direction: column; gap: 2px; padding: 0 0.7rem; }

.room-link {
  display: flex;
  gap: 0.7rem;
  align-items: baseline;
  padding: 0.6rem 0.7rem;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background 100ms, border-color 100ms;
}

.room-link:hover { background: var(--ink-2); }

.room-link.active {
  background: var(--ink-3);
  border-left-color: var(--signal);
}

.room-hash {
  font-family: var(--mono);
  color: var(--text-faint);
  font-size: 0.8rem;
}

.room-link.active .room-hash { color: var(--signal); }

.room-text { display: flex; flex-direction: column; gap: 0.15rem; }

.room-name {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text);
}

.room-link.active .room-name { color: var(--signal); }

.room-desc { font-size: 0.72rem; color: var(--text-faint); }

.rail-foot {
  margin-top: auto;
  padding: 1rem 1.4rem 0.4rem;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.user-chip { display: flex; align-items: center; gap: 0.7rem; min-width: 0; flex: 1; }

.user-avatar {
  width: 2.1rem;
  height: 2.1rem;
  flex: none;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-weight: 600;
  color: var(--ink-0);
  background: var(--amber);
  border-radius: 2px;
}

.user-names { display: flex; flex-direction: column; min-width: 0; }

.user-display {
  font-weight: 600;
  font-size: 0.85rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-handle {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-faint);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.logout {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--text-faint);
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 0.4rem 0.55rem;
  transition: color 120ms, border-color 120ms;
}

.logout:hover { color: var(--alarm); border-color: var(--alarm); }

/* deck */

.deck { display: flex; flex-direction: column; min-width: 0; min-height: 0; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.6rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-1), transparent);
}

.topbar-room { display: flex; align-items: baseline; gap: 1rem; }

.topbar-room h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.subject-code {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--signal-dim);
  border: 1px solid var(--line);
  padding: 0.2rem 0.5rem;
  background: var(--ink-1);
}

.topbar-status {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--text-faint);
}

.led {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-faint);
  transition: background 200ms;
}

.topbar-status.live .led {
  background: var(--signal);
  box-shadow: 0 0 8px var(--signal);
  animation: pulse 2.2s ease-in-out infinite;
}

.topbar-status.live .status-text { color: var(--signal); }

.topbar-status.offline .led { background: var(--alarm); box-shadow: 0 0 8px var(--alarm); }
.topbar-status.offline .status-text { color: var(--alarm); }

/* stream */

.stream {
  flex: 1;
  overflow-y: auto;
  padding: 1.4rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  scrollbar-width: thin;
  scrollbar-color: var(--line-hot) transparent;
}

.stream-empty {
  margin: auto;
  text-align: center;
  color: var(--text-faint);
}

.empty-glyph {
  font-family: var(--mono);
  font-size: 1.6rem;
  color: var(--signal-dim);
  display: block;
  margin-bottom: 0.8rem;
}

.stream-empty p { font-size: 0.85rem; }

.msg {
  display: grid;
  grid-template-columns: 4.6rem 9rem 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 0.42rem 0.6rem;
  border-left: 2px solid transparent;
  animation: msg-in 220ms cubic-bezier(0.2, 0.9, 0.3, 1) both;
}

.msg:hover { background: var(--ink-1); }

.msg.mine { border-left-color: var(--amber); }

.msg-time {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-faint);
}

.msg-user {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--signal);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.msg.mine .msg-user { color: var(--amber); }

.msg-text {
  font-size: 0.92rem;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

/* composer */

.composer {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin: 0 1.6rem 1.4rem;
  padding: 0.4rem 0.4rem 0.4rem 1rem;
  border: 1px solid var(--line-hot);
  background: var(--ink-1);
  transition: border-color 120ms, box-shadow 120ms;
}

.composer:focus-within {
  border-color: var(--signal-dim);
  box-shadow: 0 0 0 1px var(--signal-dim), 0 0 30px rgba(78, 240, 177, 0.08);
}

.composer-prompt {
  font-family: var(--mono);
  color: var(--signal);
  animation: blink 1.4s steps(2) infinite;
}

.composer-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.9rem;
  padding: 0.6rem 0;
}

.composer-input::placeholder { color: var(--text-faint); }

.composer-send {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--ink-0);
  background: var(--signal);
  border: none;
  padding: 0.7rem 1.1rem;
  cursor: pointer;
  transition: filter 120ms;
}

.composer-send:hover { filter: brightness(1.15); }
.composer-send:disabled { filter: grayscale(0.6) brightness(0.7); cursor: wait; }

/* motion */

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

@keyframes msg-in {
  from { opacity: 0; transform: translateX(-6px); }
  to { opacity: 1; transform: none; }
}

@keyframes blink { 50% { opacity: 0.15; } }

@keyframes pulse { 50% { box-shadow: 0 0 14px var(--signal); } }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* small screens: collapse the rail into a top strip */

@media (max-width: 760px) {
  .console { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .rail {
    flex-direction: row;
    align-items: center;
    overflow-x: auto;
    padding: 0.6rem 1rem;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .wordmark { border: 0; padding: 0 1rem 0 0; font-size: 1.1rem; }
  .wordmark-sub, .rail-label, .room-desc, .rail-foot { display: none; }
  .rooms { flex-direction: row; padding: 0; }
  .room-link { border-left: 0; border-bottom: 2px solid transparent; }
  .room-link.active { border-bottom-color: var(--signal); }
  .msg { grid-template-columns: auto 1fr; grid-template-rows: auto auto; }
  .msg-time { grid-row: 1; order: 2; justify-self: end; }
  .msg-text { grid-column: 1 / -1; }
}