/* C5–C6 — Event chat (active + read-only) */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  font-family: var(--font-body);
  color: var(--color-on-background);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

.chat-app {
  display: grid;
  grid-template-rows: var(--toolbar-h) 1fr;
  height: 100%;
  min-height: 100vh;
}

.chat-workspace {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 0;
  height: 100%;
}

.chat-side {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-height: 0;
  overflow: auto;
  padding: 16px;
  border-right: 1px solid var(--color-outline);
  background: var(--color-surface);
}

.chat-side-head {
  margin-bottom: 14px;
}

.chat-side-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-on-surface-variant);
}

.chat-side-back:hover {
  color: var(--color-on-surface);
}

.chat-side-back svg {
  width: 16px;
  height: 16px;
}

.chat-side-cat {
  display: block;
  margin-bottom: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.chat-side-title {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.chat-side-meta {
  margin: 0 0 16px;
  font-size: 0.8rem;
  color: var(--color-on-surface-variant);
  line-height: 1.4;
}

.chat-side h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 650;
}

.chat-person-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chat-person {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.chat-person.is-you {
  background: var(--color-primary-container);
}

.chat-avatar {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-surface-variant);
  color: var(--color-on-surface-variant);
  font-size: 0.8rem;
  font-weight: 700;
}

.chat-person.is-you .chat-avatar,
.chat-avatar.is-org {
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
}

.chat-person strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 650;
}

.chat-person span {
  font-size: 0.72rem;
  color: var(--color-on-surface-variant);
}

.chat-main {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 0;
  min-width: 0;
  background: var(--color-background);
}

.chat-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-outline);
  background: var(--color-surface);
}

.chat-top h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.chat-top p {
  margin: 2px 0 0;
  font-size: 0.8rem;
  color: var(--color-on-surface-variant);
}

.chat-top-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chat-banner {
  margin: 12px 20px 0;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--color-outline);
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
  font-size: 0.85rem;
  line-height: 1.45;
}

.chat-banner.is-muted {
  background: var(--color-surface-variant);
  color: var(--color-on-surface);
}

.chat-banner strong {
  font-family: var(--font-display);
  font-weight: 650;
}

.chat-thread {
  overflow: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.chat-day {
  align-self: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-on-surface-variant);
  background: var(--color-surface-variant);
}

.msg {
  display: flex;
  gap: 10px;
  max-width: min(520px, 92%);
}

.msg.is-mine {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.msg-body {
  min-width: 0;
}

.msg-meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
  font-size: 0.72rem;
  color: var(--color-on-surface-variant);
}

.msg.is-mine .msg-meta {
  flex-direction: row-reverse;
}

.msg-meta strong {
  font-size: 0.8rem;
  font-weight: 650;
  color: var(--color-on-surface);
}

.msg-bubble {
  padding: 10px 12px;
  border-radius: 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-outline);
  font-size: 0.92rem;
  line-height: 1.45;
  box-shadow: var(--shadow-soft);
}

.msg.is-mine .msg-bubble {
  background: var(--color-primary-container);
  border-color: color-mix(in srgb, var(--color-primary) 30%, var(--color-outline));
  color: var(--color-on-primary-container);
}

/* Сообщения организатора — заметнее обычных */
.msg.is-org .msg-bubble {
  background: color-mix(in srgb, var(--color-primary) 10%, var(--color-surface));
  border-color: color-mix(in srgb, var(--color-primary) 40%, var(--color-outline));
  border-left: 3px solid var(--color-primary);
}

.msg-org-badge {
  display: inline-flex;
  align-items: center;
  height: 18px;
  padding: 0 7px;
  border-radius: 999px;
  background: var(--color-primary-container);
  color: var(--color-on-primary-container);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.msg-system {
  align-self: center;
  max-width: 28rem;
  text-align: center;
  padding: 8px 12px;
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--color-on-surface-variant);
}

.chat-composer {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 14px 20px 18px;
  border-top: 1px solid var(--color-outline);
  background: var(--color-surface);
}

.chat-composer textarea {
  flex: 1;
  min-height: 44px;
  max-height: 120px;
  resize: none;
  padding: 11px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--color-outline);
  background: var(--color-background);
  line-height: 1.4;
}

.chat-composer textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--color-primary) 45%, transparent);
  outline-offset: 1px;
}

.chat-composer-readonly {
  padding: 16px 20px 20px;
  border-top: 1px solid var(--color-outline);
  background: var(--color-surface-variant);
  text-align: center;
}

.chat-composer-readonly p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--color-on-surface-variant);
  line-height: 1.45;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 650;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.btn-primary:hover {
  filter: brightness(0.95);
}

.btn-ghost {
  background: var(--color-surface);
  border-color: var(--color-outline);
  color: var(--color-on-surface);
}

.btn-ghost:hover {
  background: var(--color-surface-variant);
}

.btn-sm {
  height: 34px;
  padding: 0 12px;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.mock-tag {
  position: fixed;
  left: 96px;
  top: 12px;
  z-index: 70;
  font-size: 0.7rem;
  padding: 4px 8px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  border: 1px solid var(--color-outline);
  color: var(--color-on-surface-variant);
  pointer-events: none;
  line-height: 1.2;
}

.mock-tag a {
  pointer-events: auto;
  color: inherit;
  text-decoration: underline;
}

@media (max-width: 820px) {
  .chat-workspace {
    grid-template-columns: 1fr;
  }

  .chat-side {
    display: none;
  }
}