/* Web: plovoucí okénko „Zeptej se Drběny“ (public/chat.js). */

.chat {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.75rem;
  pointer-events: none;
}

.chat > * { pointer-events: auto; }

.chat-fab {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 1.1rem 0.35rem 0.35rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink);
  font: 700 1rem/1 var(--sans);
  box-shadow: var(--shadow);
  transition: transform 0.15s, box-shadow 0.15s;
}

.chat-fab:hover { transform: translateY(-2px); }
.chat-fab:focus-visible, .chat-x:focus-visible, .chat-send:focus-visible, .chat-idea:focus-visible { outline: 3px solid var(--tape); outline-offset: 2px; }

/* Celá Drběna i s rohy, vykukuje z tlačítka nahoru. */
.chat-fab img {
  width: 3.6rem;
  height: 3.6rem;
  margin: -1.2rem 0 -0.1rem;
  object-fit: contain;
  filter: drop-shadow(0 2px 3px rgb(0 0 0 / 0.2));
}

.chat.is-open .chat-fab { display: none; }

/* Bublina „Zeptej se mě!“ vedle tlačítka, jen na mobilu (chat.js ji jednou ukáže a schová). */
.chat-hint {
  position: absolute;
  right: calc(100% + 0.6rem);
  bottom: 0.9rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 1rem 1rem 0.25rem 1rem;
  background: var(--card);
  color: var(--ink);
  font: 700 0.95rem/1 var(--sans);
  white-space: nowrap;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateX(0.5rem) scale(0.9);
  transform-origin: right bottom;
  transition: opacity 0.25s, transform 0.25s;
}

.chat-hint.is-shown { opacity: 1; transform: none; }
.chat-hint[hidden], .chat.is-open .chat-hint { display: none; }

.chat-panel {
  display: flex;
  flex-direction: column;
  width: min(24rem, calc(100vw - 2rem));
  height: min(36rem, calc(100dvh - 2rem));
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: var(--card);
  box-shadow: 0 24px 64px rgb(83 49 32 / 0.22);
  overflow: hidden;
}

.chat-panel[hidden] { display: none; }

.chat-head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.7rem 0.75rem 0.7rem 0.9rem;
  background: var(--paper-deep);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 2px 10px rgb(83 49 32 / 0.08);
  position: relative;
  z-index: 1;
}

.chat-head img { width: 2.4rem; height: 2.4rem; border-radius: 50%; object-fit: cover; background: var(--paper); }
.chat-title { display: grid; flex: 1; min-width: 0; }
.chat-title strong { font-family: var(--display); font-weight: 650; font-size: 1.1rem; }
.chat-title small { color: var(--muted); font-size: 0.82rem; }

.chat-x {
  width: 2.25rem;
  height: 2.25rem;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  font-size: 1.6rem;
  line-height: 1;
}

.chat-x:hover { background: rgb(255 255 255 / 0.6); }

.chat-log {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 0.9rem;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.chat-msg {
  max-width: 88%;
  padding: 0.6rem 0.85rem;
  border-radius: 1rem;
  font-size: 0.97rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.chat-msg p { margin: 0; }
.chat-msg p + p, .chat-msg ul + p, .chat-msg p + ul { margin-top: 0.45rem; }
.chat-msg ul { margin: 0; padding-left: 1.15rem; }
.chat-msg a { color: var(--brand-dark); font-weight: 600; }

.chat-assistant { align-self: flex-start; background: #f8efe5; border: 1px solid var(--line); border-bottom-left-radius: 0.3rem; }
.chat-user { align-self: flex-end; background: var(--brand); color: #fff; border-bottom-right-radius: 0.3rem; white-space: pre-wrap; }
.chat-typing { color: var(--muted); font-style: italic; }
.chat-error { background: #fff1f1; border-color: #efc3c6; color: var(--brand-dark); }
.chat-note { align-self: center; max-width: 100%; padding: 0.1rem 0.5rem; color: var(--muted); font-size: 0.85rem; }

.chat-ideas { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.chat-idea {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  font: 600 0.88rem/1.2 var(--sans);
}

.chat-idea:hover { border-color: var(--brand); color: var(--brand-dark); }

.chat-check { padding: 0 0.9rem 0.5rem; }
.chat-check[hidden] { display: none; }

.chat-form {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  padding: 0.65rem 0.75rem;
  border-top: 1px solid var(--line);
}

.chat-form textarea {
  flex: 1;
  min-height: 2.6rem;
  max-height: 7.5rem;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 1.3rem;
  background: var(--paper);
  color: var(--ink);
  font: 1rem/1.35 var(--sans);
  resize: none;
  overflow-y: hidden;
  scrollbar-width: thin;
}

.chat-form textarea:focus { outline: 2px solid var(--tape); border-color: var(--brand); }

.chat-send {
  display: grid;
  place-items: center;
  flex: none;
  width: 2.6rem;
  height: 2.6rem;
  border: 0;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
}

.chat-send:hover { background: var(--brand-dark); }
.chat-send:disabled { opacity: 0.55; cursor: wait; }
.chat-send svg { width: 1.25rem; height: 1.25rem; }

.chat-fine { margin: 0; padding: 0 0.9rem 0.65rem; color: var(--muted); font-size: 0.75rem; line-height: 1.35; }

/* Telefon, i otočený na šířku (nízký dotykový displej): okénko přes celou viditelnou plochu. */
@media (max-width: 540px), (pointer: coarse) and (max-height: 540px) {
  .chat { right: 0.75rem; bottom: 0.75rem; }
  /* Výšku a polohu nad klávesnicí dopočítá chat.js (top, height). */
  .chat.is-open { inset: 0.5rem; bottom: auto; height: calc(100dvh - 1rem); }
  .chat-lock, .chat-lock body { overflow: hidden; }
  .chat-panel { width: 100%; height: 100%; }
  .chat-fab span { display: none; }
  .chat-fab { padding: 0.3rem; }
}

@media not ((max-width: 540px) or ((pointer: coarse) and (max-height: 540px))) {
  .chat-hint { display: none; }
}

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

@media print {
  .chat { display: none; }
}