:root {
  color-scheme: light dark;
  --pozadi: #f4f5f7;
  --plocha: #ffffff;
  --text: #1c2430;
  --tlumene: #5b6675;
  --akcent: #2f4a6d;
  --chyba: #a3262a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --pozadi: #12161c;
    --plocha: #1b222b;
    --text: #e6eaf0;
    --tlumene: #9aa5b4;
    --akcent: #8fb0d9;
    --chyba: #f08a8d;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--pozadi);
  color: var(--text);
  font:
    16px/1.5 system-ui,
    sans-serif;
}

main {
  width: min(24rem, calc(100vw - 2rem));
  padding: 2rem;
  background: var(--plocha);
  border-radius: 12px;
  box-shadow: 0 1px 3px rgb(0 0 0 / 15%);
}

h1 {
  margin: 0 0 1.5rem;
  font-size: 1.4rem;
}

button {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 0;
  border-radius: 8px;
  background: var(--akcent);
  color: var(--plocha);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: wait;
}

#zprava {
  min-height: 1.5em;
  margin: 1rem 0 0;
  color: var(--tlumene);
}

#zprava.chyba {
  color: var(--chyba);
}

main.chat {
  width: min(48rem, calc(100vw - 2rem));
  padding: 1.25rem;
}

.skryte {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

.lista {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.lista select {
  flex: 1;
  min-width: 0;
  padding: 0.5rem;
  border-radius: 8px;
  font: inherit;
}

.lista button {
  width: auto;
}

button.vedlejsi {
  background: transparent;
  color: var(--akcent);
  border: 1px solid var(--akcent);
}

#zpravy {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 60vh;
  overflow-y: auto;
  margin-bottom: 1rem;
}

.bublina {
  max-width: 85%;
  padding: 0.6rem 0.9rem;
  border-radius: 10px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.bublina.clovek {
  align-self: flex-end;
  background: var(--akcent);
  color: var(--plocha);
}

.bublina.model,
.bublina.ceka {
  align-self: flex-start;
  background: var(--pozadi);
}

.bublina.ceka,
.bublina.nedokonceno {
  color: var(--tlumene);
  font-style: italic;
}

textarea {
  box-sizing: border-box;
  width: 100%;
  margin-bottom: 0.5rem;
  padding: 0.6rem;
  border-radius: 8px;
  font: inherit;
  resize: vertical;
}

#stav-chatu {
  min-height: 1.5em;
  margin: 0.5rem 0 0;
  color: var(--tlumene);
}

#stav-chatu.chyba {
  color: var(--chyba);
}

#propojeni {
  margin: 0 0 1rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid color-mix(in srgb, var(--tlumene) 40%, transparent);
  border-radius: 8px;
}

#propojeni summary {
  cursor: pointer;
  font-weight: 600;
}

#propojeni p,
#produkty {
  margin: 0.5rem 0;
  color: var(--tlumene);
}

#produkty {
  padding-left: 1.25rem;
}

#produkty .kod {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.4rem;
}

#produkty input {
  flex: 1;
  min-width: 0;
  padding: 0.5rem;
  border: 1px solid var(--tlumene);
  border-radius: 6px;
  background: var(--plocha);
  color: var(--text);
  font: inherit;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

#produkty .kod button {
  width: auto;
}

#stav-propojeni.chyba {
  color: var(--chyba);
}