body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: #0b141a;
  color: #e9edef;
  height: 100vh;
  overflow: hidden;
}

.container {
  display: flex;
  height: 100vh;
}

.sidebar {
  width: 350px;
  background: #111b21;
  border-right: 1px solid #2a3942;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  background: #202c33;
  padding: 20px;
  border-bottom: 1px solid #2a3942;
}

.sidebar-header h2 {
  margin: 0 0 10px 0;
  font-size: 1.3em;
}

.status-info {
  font-size: 0.9em;
  opacity: 0.7;
}

.conversas-list {
  flex: 1;
  overflow-y: auto;
}

.conversa-item {
  padding: 15px 20px;
  border-bottom: 1px solid #2a3942;
  cursor: pointer;
  transition: background 0.2s;
  position: relative;
}

.conversa-item:hover {
  background: #202c33;
}

.conversa-item.ativa {
  background: #2a3942;
}

.conversa-info {
  margin-bottom: 8px;
}

.conversa-nome {
  font-weight: 600;
  font-size: 1em;
  margin-bottom: 3px;
}

.conversa-telefone {
  font-size: 0.85em;
  opacity: 0.6;
}

.conversa-preview {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ultima-msg {
  font-size: 0.9em;
  opacity: 0.7;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ultima-hora {
  font-size: 0.8em;
  opacity: 0.5;
  margin-left: 10px;
}

.conversa-badge {
  position: absolute;
  top: 15px;
  right: 20px;
  background: #005c4b;
  color: white;
  border-radius: 12px;
  padding: 2px 8px;
  font-size: 0.75em;
  font-weight: 600;
}

.empty-conversas {
  padding: 40px 20px;
  text-align: center;
  opacity: 0.5;
}

.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #0b141a;
}

.chat-header {
  background: #202c33;
  padding: 15px 20px;
  border-bottom: 1px solid #2a3942;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#cliente-info h3 {
  margin: 0 0 5px 0;
  font-size: 1.1em;
}

#cliente-telefone {
  font-size: 0.85em;
  opacity: 0.7;
}

.chat-actions button {
  background: #005c4b;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9em;
  transition: background 0.2s;
}

.chat-actions button:hover {
  background: #017561;
}

.chat-messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  background-image: 
    linear-gradient(rgba(11, 20, 26, 0.9), rgba(11, 20, 26, 0.9)),
    url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><rect fill="%23182229" width="100" height="100"/><circle fill="%231a252d" cx="50" cy="50" r="1"/></svg>');
}

.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 1.2em;
  opacity: 0.5;
}

.msg {
  margin-bottom: 12px;
  display: flex;
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.msg-recebida {
  justify-content: flex-start;
}

.msg-enviada {
  justify-content: flex-end;
}

.msg-content {
  max-width: 65%;
  padding: 10px 14px;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.msg-recebida .msg-content {
  background: #202c33;
}

.msg-enviada .msg-content {
  background: #005c4b;
}

.texto {
  font-size: 0.95em;
  line-height: 1.4;
  word-wrap: break-word;
}

.hora {
  text-align: right;
  font-size: 0.7em;
  opacity: 0.6;
  margin-top: 5px;
}

.chat-footer {
  background: #202c33;
  padding: 15px 20px;
  border-top: 1px solid #2a3942;
}

.input-area {
  display: flex;
  gap: 10px;
}

#mensagem-input {
  flex: 1;
  background: #2a3942;
  border: none;
  padding: 12px 16px;
  border-radius: 8px;
  color: #e9edef;
  font-size: 0.95em;
  outline: none;
}

#mensagem-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#mensagem-input::placeholder {
  color: #667781;
}

#btn-enviar {
  background: #00a884;
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95em;
  font-weight: 600;
  transition: background 0.2s;
}

#btn-enviar:hover:not(:disabled) {
  background: #06cf9c;
}

#btn-enviar:disabled {
  background: #2a3942;
  cursor: not-allowed;
  opacity: 0.5;
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: #0b141a;
}

::-webkit-scrollbar-thumb {
  background: #2a3942;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #374850;
}