/* plaza — group chat on the open web.
   Three-column workspace layout: pod rail / channel sidebar / main. */

:root {
  --bg: #f9f7fc;
  --surface: #ffffff;
  --surface-alt: #fafaf6;

  --rail-bg: #2a1f4a;
  --rail-hover: #3a2b62;
  --sidebar-bg: #2f254f;
  --sidebar-fg: #cbc2e6;
  --sidebar-fg-dim: #8a82a8;
  --sidebar-active: rgba(124, 77, 255, 0.28);
  --sidebar-hover: rgba(255, 255, 255, 0.06);

  --rule: rgba(35, 27, 56, 0.08);
  --rule-strong: rgba(35, 27, 56, 0.14);
  --text: #1f1a2e;
  --text-soft: #5d566f;
  --text-muted: #9c95ad;
  --selection: rgba(124, 77, 255, 0.08);
  --selection-strong: rgba(124, 77, 255, 0.20);
  --accent: #7c4dff;
  --accent-deep: #5a2be0;
  --accent-soft: #ede5ff;
  --ok: #2fa66a;
  --shadow-sm: 0 1px 2px rgba(35, 27, 56, 0.04);
  --shadow-md: 0 6px 24px rgba(35, 27, 56, 0.06);

  --type-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --type-ui: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter",
             "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--type-ui);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.005em;
}
body {
  display: grid;
  grid-template-columns: 60px 240px 1fr;
  grid-template-rows: 1fr;
  height: 100vh;
  overflow: hidden;
}
button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}
button { cursor: pointer; }

/* ---------- left rail (pods) ---------- */

.rail {
  background: var(--rail-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 0;
  gap: 8px;
}
.rail-pod {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: #5a30d6;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  position: relative;
  transition: border-radius 140ms ease, background 140ms ease;
  overflow: hidden;
}
.rail-pod img { width: 100%; height: 100%; object-fit: cover; }
.rail-pod:hover { border-radius: 10px; background: var(--accent); }
.rail-pod.active { border-radius: 10px; background: var(--accent); }
.rail-pod.active::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 6px; bottom: 6px;
  width: 4px;
  background: #fff;
  border-radius: 0 4px 4px 0;
}
.rail-divider {
  height: 1px;
  width: 32px;
  background: rgba(255,255,255,0.08);
  margin: 4px 0;
}
.rail-add {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  color: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  cursor: pointer;
  transition: background 120ms ease, border-radius 120ms ease;
}
.rail-add:hover { background: rgba(255,255,255,0.12); border-radius: 10px; }

/* ---------- channel sidebar ---------- */

.sidebar {
  background: var(--sidebar-bg);
  color: var(--sidebar-fg);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.sb-header {
  padding: 18px 18px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.sb-pod-name {
  font-weight: 700;
  font-size: 15px;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sb-pod-host {
  font-size: 11px;
  color: var(--sidebar-fg-dim);
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sb-section { padding: 14px 0 4px; }
.sb-section-title {
  padding: 0 18px 6px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--sidebar-fg-dim);
}
.sb-list { list-style: none; margin: 0; padding: 0; }
.sb-item {
  padding: 5px 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--sidebar-fg);
  transition: background 80ms ease;
  line-height: 1.4;
}
.sb-item:hover { background: var(--sidebar-hover); }
.sb-item.active {
  background: var(--sidebar-active);
  color: #fff;
  font-weight: 600;
}
.sb-item .glyph {
  display: inline-block;
  width: 18px;
  text-align: center;
  color: var(--sidebar-fg-dim);
  font-weight: 400;
}
.sb-item.active .glyph { color: var(--accent-soft); }

.sb-foot {
  margin-top: auto;
  padding: 12px 18px;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
}

/* status dot in the sidebar header */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sidebar-fg-dim);
  flex-shrink: 0;
  transition: background 200ms ease;
}
.status-dot.connecting { background: var(--sidebar-fg-dim); animation: pulse 1.4s ease-in-out infinite; }
.status-dot.live       { background: var(--ok); }
.status-dot.error      { background: #c0392b; }
@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50%      { opacity: 1; }
}

/* login pill at the bottom of the sidebar */
.topbar-id {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  padding: 7px 18px;
  border-radius: 999px;
  font-feature-settings: "tnum";
  cursor: pointer;
  border: 0;
  letter-spacing: 0.005em;
  transition: background 120ms ease;
  width: 100%;
  text-align: center;
}
.topbar-id:hover { background: var(--accent-deep); }

/* ---------- main column ---------- */

.main {
  background: var(--surface);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* channel header */
.ch-header {
  border-bottom: 1px solid var(--rule);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.ch-title {
  font-weight: 700;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.ch-title .glyph { color: var(--text-muted); margin-right: 2px; }
.ch-topic {
  color: var(--text-muted);
  font-size: 13px;
  border-left: 1px solid var(--rule);
  padding-left: 14px;
  font-family: var(--type-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}
.ch-actions {
  margin-left: auto;
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--text-muted);
  flex-shrink: 0;
}
.ch-members {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--text-muted);
  font-feature-settings: "tnum";
}
.ch-action {
  background: transparent;
  border: 0;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-muted);
  transition: background 100ms ease, color 100ms ease;
}
.ch-action:hover { background: var(--accent-soft); color: var(--accent-deep); }
.ch-search {
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  width: 200px;
  color: var(--text);
  outline: none;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}
.ch-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--selection);
}
.ch-search::placeholder { color: var(--text-muted); }
.room-toggle {
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--accent-soft);
  color: var(--accent-deep);
  border: 0;
  border-radius: 999px;
  padding: 4px 10px;
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
  font-feature-settings: "tnum";
}
.room-toggle:hover:not(:disabled) {
  background: var(--accent);
  color: #fff;
}
.room-toggle:disabled { opacity: 0.6; cursor: wait; }

/* messages area */
.thread {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}
.thread-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  pointer-events: none;
  text-align: center;
}
.thread-empty-inner { max-width: 380px; color: var(--text-muted); }
.thread-empty strong {
  display: block;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.thread-empty p { font-size: 13px; line-height: 1.55; margin: 0; }

.messages {
  list-style: none;
  margin: 0;
  padding: 16px 0;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0;
  scroll-behavior: smooth;
}

.date-divider {
  display: flex;
  align-items: center;
  margin: 18px 24px 8px;
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  gap: 16px;
  font-feature-settings: "tnum";
}
.date-divider::before, .date-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}

/* message rows — Slack-density */
.msg {
  padding: 4px 24px;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 12px;
  align-items: start;
  transition: background 100ms ease;
  animation: msg-enter 220ms cubic-bezier(0.16, 1, 0.3, 1);
}
.msg:hover { background: var(--accent-soft); }
@keyframes msg-enter {
  from { opacity: 0; transform: translateY(2px); }
  to   { opacity: 1; transform: translateY(0); }
}
.msg-avatar {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  flex-shrink: 0;
  overflow: hidden;
  user-select: none;
}
.msg-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.msg-body { min-width: 0; }
.msg-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 2px;
}
.msg-author {
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}
.msg-author:hover { color: var(--accent-deep); }
.msg-time {
  font-size: 11px;
  color: var(--text-muted);
  font-feature-settings: "tnum";
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color 120ms ease;
}
.msg-time:hover { color: var(--accent-deep); }
.msg-text {
  font-size: 14px;
  color: var(--text);
  line-height: 1.45;
  word-wrap: break-word;
  overflow-wrap: break-word;
  white-space: pre-wrap;
}
.msg-text a {
  color: var(--accent-deep);
  text-decoration: underline;
  text-decoration-color: var(--selection-strong);
  text-underline-offset: 2px;
}
.msg-text a:hover { text-decoration-color: var(--accent-deep); }
.msg-text code {
  font-family: var(--type-mono);
  background: var(--surface-alt);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12.5px;
  border: 1px solid var(--rule);
}

.msg.mine .msg-avatar {
  background: var(--accent);
  color: #fff;
}

/* composer */
.composer {
  border-top: 1px solid var(--rule);
  background: var(--surface);
  padding: 12px 24px 18px;
  display: flex;
  align-items: flex-end;
  gap: 10px;
  flex-shrink: 0;
}
.composer-input {
  flex: 1;
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 10px 14px;
  outline: none;
  resize: none;
  background: var(--surface);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  max-height: 140px;
  font-family: inherit;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}
.composer-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--selection);
}
.composer-input::placeholder { color: var(--text-muted); }
.composer-send {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.005em;
  transition: background 120ms ease, opacity 120ms ease;
  flex-shrink: 0;
}
.composer-send:hover:not(:disabled) { background: var(--accent-deep); }
.composer-send:disabled {
  background: var(--text-muted);
  opacity: 0.5;
  cursor: not-allowed;
}

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

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  z-index: 1000;
  background: var(--text);
  color: #fff;
  padding: 10px 14px 10px 18px;
  border-radius: 10px;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-md);
  max-width: 540px;
  animation: toast-enter 200ms ease;
}
@keyframes toast-enter {
  from { opacity: 0; transform: translate(-50%, 6px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}
.toast-close {
  background: transparent;
  border: 0;
  color: rgba(255,255,255,0.7);
  font-size: 16px;
  line-height: 1;
  padding: 2px 6px;
  cursor: pointer;
  border-radius: 4px;
}
.toast-close:hover { color: #fff; background: rgba(255,255,255,0.08); }

/* ---------- mobile-only login pill ---------- */

/* The desktop login pill lives in the sidebar foot. On mobile the
   sidebar is hidden, so a second pill is rendered into the channel
   header. Hidden on desktop. */
.topbar-id-mobile { display: none; }

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

@media (max-width: 720px) {
  body {
    grid-template-columns: 1fr;
    height: 100vh;
    height: 100dvh; /* dvh — avoids iOS Safari URL-bar viewport jumps */
  }
  .rail, .sidebar { display: none; }

  /* Channel header on mobile: title + members + toggle + login pill */
  .ch-header {
    padding: 10px 14px;
    gap: 10px;
    flex-wrap: wrap;
  }
  .ch-title { font-size: 14px; }
  .ch-topic { display: none; }
  .ch-search { display: none; }
  /* Hide placeholder Pinned / Files until they actually do something */
  .ch-action-extra { display: none; }
  /* Bigger touch targets on whatever actions remain */
  .ch-action { min-width: 40px; min-height: 40px; padding: 8px; }
  .ch-members { font-size: 11px; }

  /* Reveal the mobile login pill in the header */
  .topbar-id-mobile {
    display: inline-flex;
    width: auto;
    margin-left: 0;
    padding: 7px 14px;
    font-size: 12.5px;
  }

  .messages { padding: 12px 0; }
  .msg { padding: 4px 14px; }
  .composer { padding: 10px 14px 14px; }
  /* 16px input prevents iOS Safari from zooming on focus */
  .composer-input { font-size: 16px; min-height: 44px; }
  .composer-send { min-height: 40px; padding: 10px 16px; }
}