/* ============================================================================
   OpenChat — interface estática para a API LLM (llamafile)
   Usa os tokens de assets/css/base.css.
   ========================================================================== */

.oc-body {
  height: 100dvh;
  min-height: 100dvh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background:
    radial-gradient(1100px 520px at 50% -12%, #fffdf8 0%, rgba(255, 253, 248, 0) 62%),
    var(--bg);
}

.oc-app {
  width: min(920px, 100%);
  height: min(calc(100dvh - 32px), 900px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* ------------------------------- Header ---------------------------------- */
.oc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
}

.oc-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.oc-logo {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: linear-gradient(145deg, var(--brand-2), var(--brand));
  color: #fff;
  box-shadow: 0 8px 18px -10px rgba(18, 59, 50, .8);
}

.oc-title {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: -.02em;
  line-height: 1.1;
}

.oc-subtitle {
  margin: 0;
  font-size: .78rem;
  color: var(--muted);
}

.oc-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.oc-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--muted);
  font-size: .76rem;
  font-weight: 600;
  white-space: nowrap;
}

.oc-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
}

.oc-status[data-state="online"] {
  color: var(--ok);
  background: var(--ok-soft);
  border-color: #bfdccb;
}
.oc-status[data-state="online"] .oc-dot {
  background: var(--ok);
  box-shadow: 0 0 0 3px rgba(44, 122, 88, .14);
}
.oc-status[data-state="offline"] {
  color: var(--danger);
  background: var(--danger-soft);
  border-color: #e8c3bf;
}
.oc-status[data-state="offline"] .oc-dot { background: var(--danger); }
.oc-status[data-state="checking"] {
  color: var(--warn);
  background: var(--warn-soft);
  border-color: #ead6a9;
}
.oc-status[data-state="checking"] .oc-dot { background: var(--warn); animation: oc-blink 1.2s infinite; }

/* ------------------------------- Botões ----------------------------------- */
.oc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-2);
  font-size: .82rem;
  font-weight: 600;
  line-height: 1.2;
  transition: background .15s ease, border-color .15s ease, color .15s ease, transform .1s ease;
}
.oc-btn:active { transform: translateY(1px); }

.oc-btn-ghost {
  background: var(--panel);
  border-color: var(--line);
}
.oc-btn-ghost:hover { background: var(--panel-2); border-color: var(--line-strong); }

.oc-btn-primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}
.oc-btn-primary:hover { background: var(--brand-2); border-color: var(--brand-2); }

.oc-btn-send {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 14px;
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}
.oc-btn-send:hover { background: var(--brand-2); }
.oc-btn-send:disabled { opacity: .45; cursor: not-allowed; }

.oc-btn-stop {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 14px;
  background: var(--danger-soft);
  border-color: #e8c3bf;
  color: var(--danger);
}
.oc-btn-stop:hover { background: #f3d3cf; }

.oc-icon-btn {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: transparent;
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1;
}
.oc-icon-btn:hover { background: var(--panel-2); color: var(--ink); }

/* ------------------------------- Conversa --------------------------------- */
.oc-messages {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px 18px 8px;
  overflow-y: auto;
  scroll-behavior: smooth;
}

.oc-empty {
  margin: auto;
  max-width: 560px;
  padding: 24px 12px;
  text-align: center;
}

.oc-empty-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  margin: 0 auto 14px;
  border-radius: 18px;
  background: var(--accent-soft);
  color: var(--accent);
}

.oc-empty h2 {
  margin-bottom: .4rem;
  font-size: 1.5rem;
}

.oc-empty p {
  max-width: 46ch;
  margin: 0 auto 18px;
  color: var(--muted);
}

.oc-suggestions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.oc-suggestion {
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--panel);
  color: var(--ink-2);
  font-size: .82rem;
  line-height: 1.35;
  text-align: left;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.oc-suggestion:hover {
  border-color: var(--brand-3);
  background: #fff;
  color: var(--brand);
}

.oc-msg {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  animation: oc-rise .18s ease-out;
}

.oc-msg-user { flex-direction: row-reverse; }

.oc-avatar {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  margin-top: 2px;
  border-radius: 10px;
  background: var(--panel-3);
  color: var(--ink-2);
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .04em;
}

.oc-msg-assistant .oc-avatar {
  background: var(--brand);
  color: #fff;
}

.oc-bubble {
  max-width: min(78%, 640px);
  padding: 11px 14px;
  border-radius: 14px;
  background: var(--panel-2);
  color: var(--ink);
  font-size: .92rem;
  line-height: 1.55;
  overflow-wrap: anywhere;
}
.oc-msg-user .oc-bubble {
  background: var(--brand);
  color: #fff;
  border-bottom-right-radius: 5px;
}
.oc-msg-assistant .oc-bubble { border-bottom-left-radius: 5px; }

.oc-bubble p { margin: 0 0 .55em; }
.oc-bubble p:last-child { margin-bottom: 0; }
.oc-bubble strong { font-weight: 700; }

.oc-bubble pre {
  margin: .55em 0;
  padding: 10px 12px;
  overflow-x: auto;
  border-radius: 10px;
  background: #0f1e19;
  color: #e7f0ea;
  font-size: .8rem;
  line-height: 1.5;
}

.oc-bubble code {
  padding: .1em .35em;
  border-radius: 5px;
  background: rgba(0, 0, 0, .07);
  font-family: var(--font-mono);
  font-size: .85em;
}

.oc-bubble pre code {
  padding: 0;
  background: none;
  color: inherit;
}

.oc-msg-user .oc-bubble code { background: rgba(255, 255, 255, .18); }
.oc-msg-user .oc-bubble a { color: #fff; text-decoration: underline; }

.oc-error {
  margin: .5em 0 0;
  color: var(--danger);
  font-size: .82rem;
  font-weight: 600;
}

.oc-typing {
  display: inline-flex;
  gap: 5px;
  padding: 3px 2px;
}
.oc-typing i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--muted);
  animation: oc-blink 1.2s infinite;
}
.oc-typing i:nth-child(2) { animation-delay: .15s; }
.oc-typing i:nth-child(3) { animation-delay: .3s; }

/* ------------------------------- Composer --------------------------------- */
.oc-composer {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 12px 16px 6px;
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.oc-composer textarea {
  flex: 1;
  min-height: 44px;
  max-height: 160px;
  padding: 11px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  line-height: 1.4;
  outline: none;
  resize: none;
}
.oc-composer textarea:focus {
  border-color: var(--brand-3);
  box-shadow: 0 0 0 3px rgba(47, 122, 100, .14);
}
.oc-composer textarea:disabled { opacity: .7; }

.oc-footnote {
  margin: 0;
  padding: 4px 16px 12px;
  color: var(--muted);
  font-size: .7rem;
  text-align: center;
}

/* ------------------------------- Dialog ----------------------------------- */
.oc-dialog {
  width: min(460px, calc(100vw - 32px));
  padding: 0;
  border: none;
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--ink);
  box-shadow: var(--shadow-lg);
}
.oc-dialog::backdrop { background: rgba(16, 32, 26, .45); }

.oc-dialog-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
}

.oc-dialog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.oc-dialog-head h2 { margin: 0; font-size: 1.2rem; }

.oc-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
  color: var(--ink-2);
  font-size: .8rem;
  font-weight: 600;
}
.oc-field input {
  padding: 9px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-weight: 400;
}
.oc-field input:focus {
  border-color: var(--brand-3);
  outline: none;
  box-shadow: 0 0 0 3px rgba(47, 122, 100, .14);
}
.oc-field small {
  color: var(--muted);
  font-size: .72rem;
  font-weight: 400;
}

.oc-settings-msg {
  min-height: 1.1em;
  margin: 0;
  color: var(--danger);
  font-size: .76rem;
}

.oc-dialog-foot {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 2px;
}

/* ------------------------------- Utilidades ------------------------------- */
.oc-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

@keyframes oc-blink {
  0%, 100% { opacity: .25; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(-2px); }
}

@keyframes oc-rise {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ------------------------------- Responsivo ------------------------------- */
@media (max-width: 640px) {
  .oc-body { padding: 0; }
  .oc-app {
    width: 100%;
    height: 100dvh;
    border: none;
    border-radius: 0;
  }
  .oc-header { padding: 12px 14px; gap: 8px; }
  .oc-subtitle { display: none; }
  .oc-title { font-size: 1.2rem; }
  .oc-logo { width: 36px; height: 36px; border-radius: 11px; }
  .oc-actions { gap: 6px; }
  .oc-actions .oc-btn-ghost { padding: 7px 10px; font-size: .76rem; }
  .oc-status { padding: 5px 9px; font-size: .72rem; }
  .oc-messages { padding: 16px 12px 6px; gap: 13px; }
  .oc-suggestions { grid-template-columns: 1fr; }
  .oc-bubble { max-width: 86%; }
  .oc-composer { padding: 10px 12px 4px; }
  .oc-footnote { padding-bottom: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}