/* ChatFlow
 * Visual inspirado no Instagram Direct: bolhas arredondadas, header limpo
 * e botoes de acao no estilo quick-reply. Tudo em rem para escalar com o root.
 */

:root {
  /* Cores — paleta estilo Instagram Direct */
  --cf-bg:            #000000;
  --cf-header-bg:     #000000;
  --cf-bot-bubble:    #262626;
  --cf-user-bubble:   #3797f0;
  --cf-text:          #f5f5f5;
  --cf-text-dim:      #8e8e8e;
  --cf-border:        #262626;
  --cf-link:          #3797f0;
  --cf-btn-bg:        #262626;
  --cf-btn-text:      #f5f5f5;
  --cf-focus:         #ffffff;

  /* Forma */
  --cf-bubble-radius: 1.125rem;
  --cf-btn-radius:    1.5rem;

  /* Tipografia e espacamento */
  --cf-font:          'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --cf-fs:            0.9375rem;
  --cf-fs-sm:         0.75rem;
  --cf-gap:           0.5rem;
  --cf-pad:           0.75rem;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--cf-bg);
}

body {
  font-family: var(--cf-font);
  color: var(--cf-text);
  -webkit-font-smoothing: antialiased;
}

/* Container principal ---------------------------------------------------- */
.cf {
  display: flex;
  flex-direction: column;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--cf-bg);
}

/* Barra do navegador embutido (opcional) -------------------------------- */
.cf-browserbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--cf-gap);
  padding: 0.375rem var(--cf-pad);
  background: #1a1a1a;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.cf-browserbar__url {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  min-width: 0;
  color: var(--cf-text);
}

.cf-browserbar__domain {
  font-size: var(--cf-fs-sm);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cf-browserbar__label {
  font-size: 0.6875rem;
  color: var(--cf-text-dim);
  margin-left: 0.25rem;
}

.cf-browserbar__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
  background: transparent;
  border: 0;
  color: var(--cf-text);
  cursor: pointer;
  border-radius: var(--cf-btn-radius);
}
.cf-browserbar__btn:hover { color: var(--cf-text-dim); }
.cf-browserbar__btn:focus-visible {
  outline: 2px solid var(--cf-focus);
  outline-offset: 2px;
}

/* Cabecalho do perfil ---------------------------------------------------- */
.cf-header {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem var(--cf-pad);
  background: var(--cf-header-bg);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.cf-header__back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  background: transparent;
  border: 0;
  color: var(--cf-text);
  cursor: pointer;
  flex-shrink: 0;
  border-radius: 50%;
  font-size: 1.25rem;
  line-height: 1;
}
.cf-header__back:hover { background: rgba(255,255,255,0.1); }
.cf-header__back:focus-visible {
  outline: 2px solid var(--cf-focus);
  outline-offset: 2px;
}

.cf-header__info {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}

.cf-header__avatar {
  width: 2.25rem;
  height: 2.25rem;
  object-fit: cover;
  border-radius: 50%;
  flex-shrink: 0;
}

.cf-header__name {
  font-weight: 600;
  font-size: 0.9375rem;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cf-header__status {
  font-size: 0.75rem;
  color: var(--cf-text-dim);
  line-height: 1.3;
}

/* Area de mensagens ------------------------------------------------------ */
.cf-messages {
  padding: var(--cf-pad);
  display: flex;
  flex-direction: column;
  gap: var(--cf-gap);
}

.cf-msg {
  display: flex;
  max-width: 82%;
}

.cf-msg--bot  { align-self: flex-start; flex-direction: column; }
.cf-msg--user { align-self: flex-end; }

.cf-msg--bot .cf-text,
.cf-msg--bot .cf-html {
  background: var(--cf-bot-bubble);
  color: var(--cf-text);
  padding: 0.625rem 0.875rem;
  border-radius: var(--cf-bubble-radius);
  border-bottom-left-radius: 0.25rem;
  line-height: 1.45;
  word-break: break-word;
}

.cf-msg--user .cf-text {
  background: linear-gradient(135deg, #3797f0, #5b51d8);
  color: #fff;
  padding: 0.625rem 0.875rem;
  border-radius: var(--cf-bubble-radius);
  border-bottom-right-radius: 0.25rem;
  line-height: 1.45;
  word-break: break-word;
}

.cf-msg--system {
  align-self: center;
  max-width: 90%;
  color: var(--cf-text-dim);
  font-size: var(--cf-fs-sm);
  text-align: center;
  padding: 0.25rem 0;
}

.cf-text a { color: #fff; text-decoration: underline; }
.cf-msg--bot .cf-text a { color: var(--cf-link); }

/* Nota/legenda abaixo de midias (campo _note do JSON) ----------------- */
.cf-note {
  margin-top: 0.75rem;
  color: var(--cf-text-dim);
  font-size: var(--cf-fs-sm);
  line-height: 1.35;
  word-break: break-word;
}

/* Erro fatal de carregamento (com botao de nova tentativa) -------------- */
.cf-error {
  align-self: center;
  max-width: 90%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.625rem;
  padding: 1rem 0;
  text-align: center;
}

.cf-error__text {
  margin: 0;
  color: var(--cf-text-dim);
  font-size: var(--cf-fs-sm);
}

.cf-error__retry {
  padding: 0.5rem 1rem;
  background: transparent;
  color: var(--cf-text);
  border: 1px solid var(--cf-border);
  border-radius: var(--cf-btn-radius);
  font-family: inherit;
  font-size: var(--cf-fs-sm);
  font-weight: 600;
  cursor: pointer;
}
.cf-error__retry:hover { border-color: var(--cf-text-dim); }
.cf-error__retry:focus-visible {
  outline: 2px solid var(--cf-focus);
  outline-offset: 2px;
}

/* Midia dentro das bolhas ----------------------------------------------- */
.cf-image,
.cf-video {
  display: block;
  width: 100%;
  max-width: 20rem;
  height: auto;
  border-radius: var(--cf-bubble-radius);
}

.cf-audio {
  width: 17rem;
  max-width: 100%;
}

.cf-embed {
  width: 100%;
  max-width: 20rem;
}
.cf-embed iframe {
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: var(--cf-bubble-radius);
  display: block;
}

.cf-linkcard {
  display: block;
  padding: 0.75rem 0.875rem;
  background: var(--cf-bot-bubble);
  color: var(--cf-link);
  text-decoration: none;
  border: 1px solid var(--cf-border);
  border-radius: var(--cf-bubble-radius);
  font-weight: 600;
  word-break: break-word;
}
.cf-linkcard:hover { border-color: var(--cf-link); }
.cf-linkcard:focus-visible {
  outline: 2px solid var(--cf-focus);
  outline-offset: 2px;
}

/* Indicador de "digitando" ---------------------------------------------- */
.cf-msg--typing .cf-typing {
  background: var(--cf-bot-bubble);
  padding: 0.75rem 0.875rem;
  border-radius: var(--cf-bubble-radius);
  display: inline-flex;
  gap: 0.25rem;
  align-items: center;
}
.cf-typing span {
  width: 0.4rem;
  height: 0.4rem;
  background: var(--cf-text-dim);
  border-radius: 50%;
  animation: cf-bounce 1.2s infinite ease-in-out;
}
.cf-typing span:nth-child(2) { animation-delay: 0.15s; }
.cf-typing span:nth-child(3) { animation-delay: 0.3s; }

@keyframes cf-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30%           { transform: translateY(-0.25rem); opacity: 1; }
}

/* Botoes de acao --------------------------------------------------------- */
.cf-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: var(--cf-pad);
  padding-top: 0.625rem;
}
.cf-options:empty { display: none; }

.cf-option {
  width: 100%;
  padding: 0.75rem 1.25rem;
  background: transparent;
  color: var(--cf-link);
  border: 1.5px solid var(--cf-link);
  border-radius: var(--cf-btn-radius);
  font-family: inherit;
  font-size: var(--cf-fs);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.cf-option:hover  { background: rgba(55, 151, 240, 0.12); }
.cf-option:active { background: rgba(55, 151, 240, 0.25); }
.cf-option:focus-visible {
  outline: 2px solid var(--cf-focus);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .cf-typing span { animation: none; opacity: 0.6; }
  .cf-option { transition: none; }
}