/* ---------------------------------------------------------------------
   Signal Desk — design tokens
   A dispatch-desk console: dark glass, brass signal accent, wire-copy type.
--------------------------------------------------------------------- */
:root {
  --ink: #0f1115;
  --panel: #171b21;
  --panel-raised: #1d222a;
  --line: #2a3038;
  --paper: #ede9dd;
  --muted: #7c8494;
  --brass: #d6a24c;
  --brass-dim: #8a6f3d;
  --error: #d8695e;

  --font-display: "Bitter", Georgia, serif;
  --font-body: "Public Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  overflow-x: hidden;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--ink);
  background-image:
    radial-gradient(ellipse 900px 500px at 50% -10%, rgba(214, 162, 76, 0.07), transparent);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* Focus visibility, kept consistent across all interactive elements */
:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------------------------------------------------------------------
   Layout shell
--------------------------------------------------------------------- */
.desk {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

/* ---------------------------------------------------------------------
   Masthead
--------------------------------------------------------------------- */
.masthead {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 36px;
}

.masthead__mark {
  flex: none;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--brass-dim);
  color: var(--brass);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.masthead h1 {
  margin: 0 0 2px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 28px;
  letter-spacing: -0.01em;
}

.masthead p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

/* ---------------------------------------------------------------------
   Channel selector
--------------------------------------------------------------------- */
.channels {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 24px;
}

.channel {
  appearance: none;
  border: none;
  background: var(--panel);
  color: var(--muted);
  padding: 14px 8px;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.channel:hover {
  background: var(--panel-raised);
  color: var(--paper);
}

.channel__name {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.channel__desc {
  font-size: 11px;
  line-height: 1.3;
  color: inherit;
  opacity: 0.75;
}

.channel[aria-pressed="true"] {
  background: var(--panel-raised);
  color: var(--paper);
  box-shadow: inset 0 2px 0 var(--brass);
}

.channel[aria-pressed="true"] .channel__name {
  color: var(--brass);
}

/* ---------------------------------------------------------------------
   Console (query form)
--------------------------------------------------------------------- */
.console {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 18px;
  margin-bottom: 28px;
}

.console__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.console__input {
  width: 100%;
  resize: vertical;
  background: var(--ink);
  border: 1px solid var(--line);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  padding: 12px;
}

.console__input::placeholder {
  color: var(--muted);
}

.console__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
}

.console__hint {
  font-size: 12px;
  color: var(--muted);
}

.console__submit {
  appearance: none;
  border: 1px solid var(--brass-dim);
  background: transparent;
  color: var(--brass);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 10px 20px;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
  flex: none;
}

.console__submit:hover {
  background: var(--brass);
  color: var(--ink);
}

.console__submit:disabled {
  opacity: 0.5;
  cursor: progress;
}

/* ---------------------------------------------------------------------
   Bulletin (results)
--------------------------------------------------------------------- */
.bulletin {
  animation: reveal 0.35s ease;
}

@keyframes reveal {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.bulletin__rule {
  height: 2px;
  background: var(--brass);
  margin-bottom: 14px;
}

.bulletin__meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 16px;
}

.bulletin__mode {
  color: var(--brass);
}

.bulletin__body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  overflow-wrap: break-word;
  word-break: break-word;
}

.bulletin__body p {
  margin: 0 0 14px;
}

.bulletin__body h1,
.bulletin__body h2,
.bulletin__body h3 {
  font-family: var(--font-display);
  margin: 20px 0 10px;
}

.bulletin__body a {
  color: var(--brass);
}

.bulletin__body code {
  font-family: var(--font-mono);
  background: var(--panel-raised);
  padding: 1px 5px;
  font-size: 0.9em;
}

/* results list (Search / Contents channels) */
.result-item {
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.result-item:first-child {
  border-top: none;
}

.result-item__title {
  font-weight: 600;
  color: var(--paper);
  overflow-wrap: break-word;
}

.result-item__url {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--brass);
  word-break: break-all;
}

.result-item__snippet {
  color: var(--muted);
  font-size: 14px;
  margin-top: 4px;
}

/* sources / citation list */
.bulletin__sources {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  overflow-wrap: break-word;
  word-break: break-word;
}

.bulletin__sources:empty {
  display: none;
  border: none;
  padding: 0;
}

.bulletin__sources-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.source-ref {
  display: block;
  font-size: 13px;
  padding: 3px 0;
  color: var(--muted);
}

.source-ref span {
  font-family: var(--font-mono);
  color: var(--brass);
  margin-right: 6px;
}

.source-ref a {
  color: var(--muted);
}

.source-ref a:hover {
  color: var(--paper);
}

/* error state */
.bulletin--error .bulletin__rule {
  background: var(--error);
}

.bulletin--error .bulletin__mode {
  color: var(--error);
}

/* ---------------------------------------------------------------------
   Footer
--------------------------------------------------------------------- */
.foot {
  margin-top: 40px;
  text-align: center;
}

.foot p {
  font-size: 12px;
  color: var(--muted);
}

/* ---------------------------------------------------------------------
   Responsive
--------------------------------------------------------------------- */
@media (max-width: 640px) {
  .desk {
    padding: 28px 14px 48px;
  }

  .channels {
    grid-template-columns: repeat(2, 1fr);
  }

  .console__row {
    flex-direction: column;
    align-items: stretch;
  }

  .console__submit {
    width: 100%;
    padding: 12px 20px;
  }
}