/* Stonechat visual identity, in CSS.
 *
 * Every value here is lifted from app/lib/ui/theme.dart — the same palette the
 * landing site uses (landing/src/styles/global.css). Three surfaces, one set of
 * numbers. If you change a colour, change it in all three or the product stops
 * looking like one product.
 *
 * From theme.dart's own summary: "Not another bubble app: warm near-black
 * console surfaces, sharp 4px corners, a burnt-orange accent, and a monospace
 * voice for anything machine-made (IDs, timestamps, relay status). Messages
 * render as a left-aligned ledger with colored rails instead of chat bubbles."
 *
 * One deliberate divergence from the landing site: **no webfonts.** The landing
 * page loads Bricolage Grotesque and IBM Plex Mono; this client loads nothing
 * from anywhere. Every external request is a request the hash root does not
 * cover and an origin that learns you are here — see WEB_CLIENT.md. System
 * stacks only, which also matches the app, whose mono family is Menlo.
 */

:root {
  /* palette — Zn in theme.dart */
  --bg: #100e0b;
  --surface: #17140f;
  --raised: #1e1912;
  --line: #2b261d;
  --orange: #ff4d00; /* you */
  --amber: #e6a85a; /* them */
  --on-accent: #140800;
  --text: #f4eee1;
  --muted: #b5ac99;
  --faint: #6f695c;
  --danger: #f2555a;
  --ok: #6be675;

  /* Zn.radius — 4px, everywhere, no exceptions */
  --radius: 4px;

  /* Zn.idColor's palette, in order. Index by the same hash the app uses so a
   * contact is the same colour on both clients. */
  --id-0: #e6a85a;
  --id-1: #5ad7e6;
  --id-2: #b48af2;
  --id-3: #6be675;
  --id-4: #f28ab4;
  --id-5: #7fa8f2;

  --font-mono: Menlo, 'Roboto Mono', ui-monospace, 'SF Mono', monospace;
  --font-ui:
    system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  --gutter: 16px;
}

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

html,
body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* The monospace voice: anything machine-made. IDs, fingerprints, timestamps,
 * relay status, device ids. Never used for prose the user wrote. */
.mono {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  font-variant-ligatures: none;
}

.mono--id {
  letter-spacing: 0.04em;
}

/* -- chrome ------------------------------------------------------------- */

.appbar {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 52px;
  padding: 0 var(--gutter);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  flex: none;
}

.appbar__title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

hr,
.divider {
  border: 0;
  border-top: 1px solid var(--line);
}

/* -- the ledger --------------------------------------------------------- */

/* Not bubbles. A left-aligned ledger: every row starts at the same x, and the
 * only thing that distinguishes sender from recipient is the colour of a 2px
 * rail on the left edge. Orange is you, amber is them (Zn.orange / Zn.amber). */

.ledger {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.row {
  display: grid;
  grid-template-columns: 2px 1fr;
  gap: 0 12px;
  padding: 6px var(--gutter);
  align-items: start;
}

.row__rail {
  align-self: stretch;
  background: var(--amber);
  border-radius: 1px;
}

.row--mine .row__rail {
  background: var(--orange);
}

.row__meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--faint);
}

.row__who {
  color: var(--amber);
}

.row--mine .row__who {
  color: var(--orange);
}

.row__body {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

/* Delivery state, in the machine voice. A failed send is the only place
 * danger appears in the ledger. */
.row__state {
  font-family: var(--font-mono);
  font-size: 11px;
}

.row__state--pending {
  color: var(--faint);
}

.row__state--failed {
  color: var(--danger);
}

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

.composer {
  display: flex;
  gap: 8px;
  padding: 12px var(--gutter);
  border-top: 1px solid var(--line);
  background: var(--bg);
  flex: none;
}

/* -- controls (inputDecorationTheme / filledButtonTheme in theme.dart) --- */

input[type='text'],
textarea {
  flex: 1;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 9px 12px;
  font: inherit;
  resize: none;
}

input[type='text']::placeholder,
textarea::placeholder {
  color: var(--muted);
}

input[type='text']:focus,
textarea:focus {
  outline: none;
  border-color: var(--orange);
}

button {
  font: inherit;
  font-weight: 700;
  border-radius: var(--radius);
  padding: 9px 16px;
  border: 1px solid transparent;
  background: var(--orange);
  color: var(--on-accent);
  cursor: pointer;
}

button:disabled {
  opacity: 0.45;
  cursor: default;
}

button.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
  font-weight: 400;
}

/* -- status banner ------------------------------------------------------ */

/* The web client is a tethered session with an expiry. It says so, always —
 * "the phone shows web session active throughout" (WEB_CLIENT.md) is only
 * half the promise; the browser should be honest about it too. */
.banner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px var(--gutter);
  background: var(--raised);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  flex: none;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--faint);
  flex: none;
}

.dot--live {
  background: var(--ok);
}

.dot--warn {
  background: var(--amber);
}

.dot--down {
  background: var(--danger);
}

.app {
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* -- desktop shell ------------------------------------------------------- */

/* Three panes: a narrow rail to switch section, a conversation list, and the
 * conversation itself. The rail exists so "chats vs groups" is a place rather
 * than a mode — the list below it changes, nothing else does. */

.shell {
  display: flex;
  height: 100%;
  min-height: 0;
}

.rail {
  width: 56px;
  flex: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 0;
  background: var(--bg);
  border-right: 1px solid var(--line);
}

.rail__btn {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--muted);
  cursor: pointer;
  padding: 0;
}

.rail__btn:hover {
  color: var(--text);
  background: var(--surface);
}

.rail__btn[aria-selected='true'] {
  color: var(--orange);
  border-color: var(--line);
  background: var(--surface);
}

.rail__spacer {
  flex: 1;
}

.sidebar {
  width: 320px;
  flex: none;
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-right: 1px solid var(--line);
  background: var(--bg);
}

.sidebar__head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  height: 52px;
  flex: none;
  border-bottom: 1px solid var(--line);
}

.sidebar__title {
  font-size: 15px;
  font-weight: 600;
}

/* A square icon button, for "new conversation". */
.icon-btn {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  cursor: pointer;
}

.icon-btn:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.sidebar__list {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

.sidebar__note {
  flex: none;
  padding: 10px 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--faint);
}

.pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.pane__head {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 52px;
  flex: none;
  padding: 0 var(--gutter);
  border-bottom: 1px solid var(--line);
}

/* Nothing selected. Deliberately quiet — it is a resting state, not a prompt
 * to act, and a loud empty pane reads as an error. */
.pane__empty {
  flex: 1;
  display: grid;
  place-items: center;
  text-align: center;
  padding: var(--gutter);
  color: var(--faint);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* A selected row in the list. */
.row--active {
  background: var(--surface);
}

/* -- modal --------------------------------------------------------------- */

.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: grid;
  place-items: center;
  padding: var(--gutter);
  z-index: 10;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  width: min(440px, 100%);
}

.modal h2 {
  font-size: 15px;
  margin-bottom: 6px;
}

.modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

/* -- narrow screens ------------------------------------------------------ */

/* One pane at a time. The list and the conversation both want the full width
 * on a phone, and a 320px column beside a 60px rail leaves neither usable. */
@media (max-width: 760px) {
  .sidebar {
    width: 100%;
  }
  .shell[data-view='list'] .pane,
  .shell[data-view='chat'] .sidebar {
    display: none;
  }
  .shell[data-view='list'] .sidebar,
  .shell[data-view='chat'] .pane {
    flex: 1;
  }
}

/* On wide screens the back button is redundant — both panes are visible. */
@media (min-width: 761px) {
  .pane__back {
    display: none !important;
  }
}

/* -- brand bar ----------------------------------------------------------- */

/* One row of chrome: the mark and wordmark, then connection status pushed to
 * the right. The wordmark is monospace with the landing site's letter-spacing
 * (Header.astro `.logo-word`), so the three surfaces read as one product. */

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 46px;
  flex: none;
  padding: 0 12px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.brand__mark {
  width: 22px;
  height: 22px;
  display: block;
  flex: none;
}

.brand__word {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

/* The status sits inside the brand bar rather than in a strip of its own, so
 * it loses the banner's background and border. */
.brand .banner {
  margin-left: auto;
  background: transparent;
  border: 0;
  padding: 0;
}