/* Pigeonpost inbox — one stylesheet, no dependencies, no fonts to fetch.
   Tokens are the site's (site/style.css) so this reads as the same product: white ground, navy
   accent, the same rule and wash greys. The layout is the only new idea here — a two-pane
   messenger that collapses to one pane on a phone. */

:root {
  --navy: #16326b;
  --blue: #2563eb;
  --green: #22c55e;
  --amber: #b45309;
  --ink: #14181f;
  --body: #444c58;
  --muted: #6b7480;
  --rule: #e6e9ee;
  --wash: #f7f9fb;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --list-w: 360px;
  --head-h: 60px;
}

* { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  height: 100%;
  /* The app owns every scrollbar it has. A document-level scroll here is always a bug: it takes the
     composer off the bottom of the screen and lets the layout slide sideways. */
  overflow: hidden;
}

body {
  margin: 0;
  height: 100%;
  background: #fff;
  color: var(--body);
  font: 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
  /* Nothing in this layout is ever meant to scroll sideways: the panes scroll vertically and wide
     content ellipsises. A horizontal scroll here is always a bug, and one that hides the right-hand
     side of every row on a phone rather than announcing itself. */
  overflow: hidden;
}

[hidden] { display: none !important; }

button { font: inherit; color: inherit; }

/* ---- signed out --------------------------------------------------------------------------- */

.signin {
  min-height: 100vh;
  min-height: 100svh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.signin-card { max-width: 34ch; text-align: center; }
.signin-card h1 {
  font-size: 30px;
  line-height: 1.18;
  letter-spacing: -0.022em;
  color: var(--ink);
  font-weight: 700;
  margin: 0 0 12px;
}
.signin-card p { margin: 0 0 22px; color: var(--body); }
.signin-note { font-size: 13px; color: var(--muted); margin-top: 18px !important; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 20px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 550;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: #1d4185; }

/* ---- app frame ---------------------------------------------------------------------------- */

.app {
  display: grid;
  grid-template-columns: var(--list-w) minmax(0, 1fr);
  height: 100vh;   /* every browser */
  height: 100svh;  /* the small viewport: the composer stays clear of a shown toolbar */
  height: 100dvh;  /* and follow the toolbar where that is supported */
  overflow: hidden;
}

/* min-width: 0 on both panes is load-bearing, not defensive. A grid item defaults to
   `min-width: auto`, so a track sized `1fr` still refuses to go narrower than its content's
   min-content width — and a nowrap message preview has a very wide one. Without this the pane grows
   past the viewport and the timestamp and unread badge are pushed off the right edge. */
.pane-list {
  border-right: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  background: #fff;
}

.pane-thread {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  background: var(--wash);
}

/* ---- list header -------------------------------------------------------------------------- */

.list-head {
  border-bottom: 1px solid var(--rule);
  padding: 10px 12px 12px;
  flex: none;
  position: relative;
}

.me { display: flex; align-items: center; gap: 6px; }

.identity {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: none;
  cursor: pointer;
  text-align: left;
}
.identity:hover { background: var(--wash); }
.me-text { min-width: 0; display: flex; flex-direction: column; line-height: 1.3; }
.me-name {
  color: var(--ink);
  font-weight: 600;
  font-size: 14.5px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.me-sub {
  color: var(--muted);
  font-size: 12px;
  font-family: var(--mono);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.chev { width: 16px; height: 16px; flex: none; color: var(--muted); }

.icon-btn {
  flex: none;
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border: 1px solid transparent;
  border-radius: 8px;
  background: none;
  color: var(--muted);
  cursor: pointer;
}
.icon-btn:hover { background: var(--wash); color: var(--ink); }
.icon-btn svg { width: 19px; height: 19px; }

.identity-menu {
  position: absolute;
  z-index: 20;
  top: 52px; left: 12px; right: 12px;
  margin: 0; padding: 5px;
  list-style: none;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 10px;
  box-shadow: 0 8px 28px rgba(20, 24, 31, .12);
  max-height: 60vh; overflow-y: auto;
}
.identity-menu li { margin: 0; }
.identity-menu button {
  width: 100%;
  display: flex; align-items: center; gap: 10px;
  padding: 8px 9px;
  border: 0; border-radius: 7px;
  background: none; cursor: pointer; text-align: left;
}
.identity-menu button:hover { background: var(--wash); }
.identity-menu .mi-name { color: var(--ink); font-weight: 550; font-size: 14px; }
.identity-menu .mi-sub { color: var(--muted); font-size: 12px; font-family: var(--mono); }
.identity-menu .mi-text { min-width: 0; display: flex; flex-direction: column; line-height: 1.3; }
.identity-menu .mi-text span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.identity-menu [aria-selected="true"] { background: var(--wash); }

.search { margin-top: 10px; }
.search input {
  width: 100%;
  padding: 8px 12px;
  font: inherit;
  font-size: 14px;
  color: var(--ink);
  background: var(--wash);
  border: 1px solid var(--rule);
  border-radius: 8px;
  outline: none;
}
.search input:focus { border-color: #cfd5de; background: #fff; }

/* ---- avatars ------------------------------------------------------------------------------ */

.avatar {
  flex: none;
  width: 38px; height: 38px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--navy);
  color: #fff;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .01em;
  text-transform: uppercase;
  user-select: none;
}
.avatar[data-tone="1"] { background: #16326b; }
.avatar[data-tone="2"] { background: #2563eb; }
.avatar[data-tone="3"] { background: #0f766e; }
.avatar[data-tone="4"] { background: #7c3aed; }
.avatar[data-tone="5"] { background: #b45309; }
.avatar[data-tone="6"] { background: #be123c; }

/* ---- thread list -------------------------------------------------------------------------- */

.threads {
  list-style: none;
  margin: 0; padding: 4px 0 20px;
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
  min-height: 0;
  -webkit-overflow-scrolling: touch;
}
.threads li { margin: 0; min-width: 0; }

/* Section heading inside the list. Your own agents sit above everyone else. */
.group-head {
  padding: 14px 14px 5px;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 1;
}
.group-head + .thread-row { border-top: 1px solid var(--rule); }

.thread-row {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 14px;
  border: 0;
  background: none;
  cursor: pointer;
  text-align: left;
  border-bottom: 1px solid var(--rule);
}
.thread-row:hover { background: var(--wash); }
.thread-row[aria-current="true"] { background: #eef2f9; }

.tr-text { flex: 1; min-width: 0; }
.tr-top { display: flex; align-items: baseline; gap: 8px; }
.tr-name {
  flex: 1; min-width: 0;
  color: var(--ink);
  font-weight: 600;
  font-size: 14.5px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.tr-time { flex: none; color: var(--muted); font-size: 11.5px; }
.tr-bottom { display: flex; align-items: center; gap: 8px; margin-top: 1px; }
.tr-preview {
  flex: 1; min-width: 0;
  color: var(--muted);
  font-size: 13px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.tr-badges { flex: none; display: flex; align-items: center; gap: 6px; }

.dot {
  min-width: 18px; height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  background: var(--navy);
  color: #fff;
  font-size: 11px;
  font-weight: 650;
  display: grid; place-items: center;
}
.pill {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: 5px;
  border: 1px solid;
}
.pill-held { color: var(--amber); border-color: #fcd9a4; background: #fff8ee; }
.pill-auto { color: #15803d; border-color: #bbf7d0; background: #f0fdf4; }
.pill-blocked { color: #9f1239; border-color: #fecdd3; background: #fff1f2; }

.empty {
  color: var(--muted);
  font-size: 13.5px;
  padding: 22px 18px;
  margin: 0;
}

/* ---- thread ------------------------------------------------------------------------------- */

.thread-head {
  flex: none;
  height: var(--head-h);
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 0 12px;
  background: #fff;
  border-bottom: 1px solid var(--rule);
}
.thread-head .back { display: none; }
.thread-who { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.3; }
.thread-name {
  color: var(--ink); font-weight: 600; font-size: 15px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.thread-sub {
  color: var(--muted); font-size: 12px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.thread-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  /* Explicit: `overflow-y: auto` alone computes the x axis to `auto` too, and then one wide bubble
     turns the conversation into something you have to drag sideways to read. */
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  padding: 18px 0 8px;
}
.thread-empty {
  height: 100%;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 14px;
}

.messages {
  list-style: none;
  width: 100%;
  margin: 0 auto;
  padding: 0 16px 10px;
  max-width: 760px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.messages li { margin: 0; display: flex; min-width: 0; }
.messages li.mine { justify-content: flex-end; }

.bubble {
  min-width: 0;
  max-width: min(78%, 560px);
  padding: 8px 12px 6px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--rule);
  box-shadow: 0 1px 1px rgba(20, 24, 31, .03);
}
.mine .bubble {
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
}
.bubble .text {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.5;
}
.mine .bubble .text { color: #fff; }

.bubble .meta {
  margin-top: 3px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  font-size: 11px;
  color: var(--muted);
}
.mine .bubble .meta { color: rgba(255, 255, 255, .72); }
.bubble .meta .failed { color: #be123c; font-weight: 600; }
.mine .bubble .meta .failed { color: #fecdd3; }

/* A day separator, so a thread spanning weeks reads as one. */
.daybreak {
  align-self: center;
  margin: 10px 0 2px;
  font-size: 11.5px;
  color: var(--muted);
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 20px;
  padding: 3px 12px;
}
.messages li.sep { justify-content: center; }

/* A scoped request is an envelope, not prose — render it as the structured thing it is. */
.request {
  margin-top: 6px;
  border-top: 1px solid var(--rule);
  padding-top: 6px;
}
.request .verb {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink);
  font-weight: 600;
}
.request .args {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--body);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 4px 0 0;
}
.request .why { font-size: 12.5px; color: var(--muted); margin: 4px 0 0; }
.decision { display: flex; align-items: center; gap: 6px; margin-top: 6px; }
.decision .reason { font-size: 11.5px; color: var(--muted); }

/* ---- sender info -------------------------------------------------------------------------- */

.peer-info {
  flex: none;
  background: #fff;
  border-top: 1px solid var(--rule);
  padding: 12px 16px 14px;
  font-size: 13px;
}
.peer-info dl {
  margin: 0;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 14px;
  max-width: 760px;
}
.peer-info dt { color: var(--muted); }
.peer-info dd { margin: 0; color: var(--ink); overflow-wrap: anywhere; }
.peer-info .mono { font-family: var(--mono); font-size: 12px; }
.peer-info .note { color: var(--muted); margin: 10px 0 0; max-width: 70ch; }
.peer-info .open-mailbox { margin-top: 12px; padding: 8px 15px; font-size: 14px; }

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

.composer {
  flex: none;
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  background: #fff;
  border-top: 1px solid var(--rule);
}
.composer textarea {
  flex: 1;
  resize: none;
  max-height: 40vh;
  padding: 9px 13px;
  font: inherit;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--wash);
  border: 1px solid var(--rule);
  border-radius: 18px;
  outline: none;
}
.composer textarea:focus { border-color: #cfd5de; background: #fff; }
.send {
  flex: none;
  width: 38px; height: 38px;
  border: 0;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  display: grid; place-items: center;
  cursor: pointer;
}
.send:disabled { background: #c3cbd8; cursor: default; }
.send svg { width: 18px; height: 18px; margin-left: -1px; }

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

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(22px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 60;
  max-width: min(92vw, 460px);
  background: var(--ink);
  color: #fff;
  font-size: 13.5px;
  padding: 10px 15px;
  border-radius: 9px;
  box-shadow: 0 8px 28px rgba(20, 24, 31, .22);
}

/* ---- phone: one pane at a time ------------------------------------------------------------ */

@media (max-width: 780px) {
  .app { grid-template-columns: minmax(0, 1fr); }

  .pane-list { border-right: 0; }

  /* The thread rides over the list and slides in, which is what makes back feel like back.
     Parked off-screen it must not widen the document — hence the overflow guard on body — and it
     must not be reachable by tab or a screen reader, hence visibility rather than transform alone. */
  .pane-thread {
    position: fixed;
    inset: 0;
    height: 100vh;
    height: 100svh;
    height: 100dvh;
    z-index: 30;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform .22s ease, visibility 0s linear .22s;
    background: var(--wash);
  }
  .pane-thread[data-open="true"] {
    transform: translateX(0);
    visibility: visible;
    transition: transform .22s ease, visibility 0s;
  }

  .thread-head .back { display: grid; }

  .bubble { max-width: 86%; }
}

@media (prefers-reduced-motion: reduce) {
  .pane-thread { transition: none; }
}