/* Briin AI Widget */

:root {
  --briin-accent: #AEB7C4;
  --briin-navy: #0C1B2E;
  --briin-surface: rgba(18, 28, 48, 0.95);
  --briin-text: #E8E4DD;
  --briin-muted: #8A9BB0;
}

/* Bubble */
.briin-bubble {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 99999;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--briin-accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 24px rgba(0,0,0,0.35), 0 1px 6px rgba(0,0,0,0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.briin-bubble:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.briin-bubble:focus-visible {
  outline: 2px solid var(--briin-accent);
  outline-offset: 3px;
}

/* Panel */
.briin-panel {
  position: fixed;
  bottom: 90px;
  right: 24px;
  z-index: 99998;
  width: 320px;
  max-height: 500px;
  display: flex;
  flex-direction: column;
  background: var(--briin-surface);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border: 1px solid rgba(174, 183, 196, 0.2);
  border-radius: 16px;
  box-shadow:
    0 20px 60px rgba(0,0,0,0.5),
    0 4px 20px rgba(0,0,0,0.3),
    inset 0 1px 0 rgba(255,255,255,0.06);
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
  font-size: 14px;
  color: var(--briin-text);
}
.briin-panel[hidden] {
  display: none;
}

/* Header */
.briin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: rgba(174, 183, 196, 0.08);
  border-bottom: 1px solid rgba(174, 183, 196, 0.15);
  flex-shrink: 0;
}
.briin-name {
  font-weight: 600;
  font-size: 15px;
  color: var(--briin-text);
}
.briin-close {
  background: transparent;
  border: none;
  color: var(--briin-muted);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
  transition: color 0.15s;
}
.briin-close:hover { color: var(--briin-text); }

/* Messages */
.briin-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  scrollbar-width: thin;
  scrollbar-color: rgba(174,183,196,0.3) transparent;
}
.briin-messages::-webkit-scrollbar { width: 4px; }
.briin-messages::-webkit-scrollbar-track { background: transparent; }
.briin-messages::-webkit-scrollbar-thumb { background: rgba(174,183,196,0.3); border-radius: 2px; }

.briin-msg {
  max-width: 85%;
  padding: 8px 12px;
  border-radius: 12px;
  line-height: 1.5;
  word-break: break-word;
  white-space: pre-wrap;   /* preserva as quebras de linha das respostas */
}
.briin-msg--user {
  align-self: flex-end;
  background: var(--briin-accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.briin-msg--assistant {
  align-self: flex-start;
  background: rgba(255,255,255,0.08);
  color: var(--briin-text);
  border-bottom-left-radius: 4px;
}

/* Typing indicator */
.briin-typing {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 10px 14px;
}
.briin-typing span {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--briin-muted);
  animation: briin-bounce 1.2s infinite ease-in-out;
}
.briin-typing span:nth-child(1) { animation-delay: 0s; }
.briin-typing span:nth-child(2) { animation-delay: 0.2s; }
.briin-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes briin-bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40%            { transform: scale(1);   opacity: 1; }
}

/* Lead form */
.briin-lead-form {
  padding: 12px;
  background: rgba(255,255,255,0.04);
  border-top: 1px solid rgba(174,183,196,0.12);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.briin-lead-form p {
  margin: 0;
  font-size: 13px;
  color: var(--briin-muted);
}
.briin-lead-form input {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(174,183,196,0.25);
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--briin-text);
  font-size: 13px;
  outline: none;
}
.briin-lead-form input:focus { border-color: var(--briin-accent); }
.briin-lead-form button {
  background: var(--briin-accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
.briin-lead-form button:hover { opacity: 0.85; }

/* Input area */
.briin-input-area {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid rgba(174,183,196,0.12);
  flex-shrink: 0;
  background: rgba(0,0,0,0.15);
}
#briin-input {
  flex: 1;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(174,183,196,0.2);
  border-radius: 10px;
  padding: 8px 10px;
  color: var(--briin-text);
  font-size: 13px;
  resize: none;
  outline: none;
  font-family: inherit;
  line-height: 1.4;
  max-height: 80px;
  overflow-y: auto;
}
#briin-input:focus { border-color: var(--briin-accent); }
#briin-input::placeholder { color: var(--briin-muted); }
#briin-send {
  background: var(--briin-accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: opacity 0.15s, transform 0.1s;
}
#briin-send:hover { opacity: 0.85; transform: scale(1.05); }
#briin-send:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* Mobile */
@media (max-width: 480px) {
  .briin-panel {
    width: calc(100vw - 16px);
    right: 8px;
    bottom: 80px;
    max-height: 70vh;
  }
  .briin-bubble {
    bottom: 16px;
    right: 16px;
  }
}