:root {
  --bg: var(--tg-theme-bg-color, #fff);
  --sec-bg: var(--tg-theme-secondary-bg-color, #f0f0f0);
  --text: var(--tg-theme-text-color, #000);
  --hint: var(--tg-theme-hint-color, #999);
  --link: var(--tg-theme-link-color, #2481cc);
  --sep: color-mix(in srgb, var(--hint) 25%, transparent);
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
body {
  margin: 0;
  font: 16px/1.4 -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
.screen.hidden { display: none; }

.hdr {
  padding: 14px 16px 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--hint);
  text-transform: uppercase;
  letter-spacing: .4px;
}

/* строка чата */
.row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  cursor: pointer;
}
.row:active { background: var(--sec-bg); }
.avatar, .avatar-fallback {
  width: 48px; height: 48px;
  border-radius: 50%;
  flex: 0 0 48px;
  object-fit: cover;
  background: var(--sec-bg);
}
.avatar-fallback {
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 19px; font-weight: 500;
}
.row-main { flex: 1; min-width: 0; border-bottom: .5px solid var(--sep); padding-bottom: 8px; }
.row:last-child .row-main { border-bottom: none; }
.row-top { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.name { font-size: 16px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.time { font-size: 13px; color: var(--hint); flex: 0 0 auto; }
.row-sub { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-top: 2px; }
.preview { font-size: 14px; color: var(--hint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.badge {
  flex: 0 0 auto;
  min-width: 20px; height: 20px;
  padding: 0 6px;
  border-radius: 10px;
  background: var(--link);
  color: #fff;
  font-size: 12px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
}

/* карточка чата */
.card-head { display: flex; align-items: center; gap: 14px; padding: 16px; }
.card-head .avatar, .card-head .avatar-fallback { width: 60px; height: 60px; flex-basis: 60px; font-size: 24px; }
.card-title { font-size: 19px; font-weight: 600; }
.card-sub { font-size: 14px; color: var(--hint); margin-top: 2px; }
.card-sub a { color: var(--link); text-decoration: none; }
.section-label { padding: 6px 16px; font-size: 13px; color: var(--hint); text-transform: uppercase; letter-spacing: .4px; }
.draft {
  margin: 0 16px 12px;
  padding: 12px;
  border-radius: 12px;
  background: var(--sec-bg);
  font-size: 15px;
  white-space: pre-wrap;
}
.msgs { padding: 0 16px 24px; }
.msg { margin: 8px 0; display: flex; flex-direction: column; }
.msg .meta { font-size: 12px; color: var(--hint); }
.msg .body {
  padding: 8px 12px;
  border-radius: 14px;
  max-width: 85%;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 15px;
}
.msg.client { align-items: flex-start; }
.msg.client .body { background: var(--sec-bg); border-bottom-left-radius: 4px; }
.msg.owner { align-items: flex-end; }
.msg.owner .body { background: var(--link); color: #fff; border-bottom-right-radius: 4px; }
.btn-dialog {
  display: block; margin: 4px 16px 16px;
  padding: 12px; border-radius: 12px;
  background: var(--sec-bg); color: var(--link);
  text-align: center; font-size: 15px; font-weight: 500;
  cursor: pointer;
}
.btn-send {
  display: block; margin: 4px 16px 12px;
  padding: 13px; border-radius: 12px;
  background: var(--tg-theme-button-color, #2481cc);
  color: var(--tg-theme-button-text-color, #fff);
  text-align: center; font-size: 16px; font-weight: 500;
  cursor: pointer;
}
.btn-send:active { opacity: .85; }
.btn-send.sent {
  background: var(--sec-bg);
  color: var(--tg-theme-hint-color, #2e7d32);
  pointer-events: none;
}
.empty { padding: 40px 16px; text-align: center; color: var(--hint); line-height: 1.6; }
.back-bar {
  padding: 12px 16px;
  color: var(--link);
  font-size: 16px;
  cursor: pointer;
  border-bottom: .5px solid var(--sep);
}
.back-bar:active { background: var(--sec-bg); }