/* Variables estilo WhatsApp */
:root {
  --wa-bg-pattern: #e5ddd5;
  --wa-bg-chat: #efeae2;
  --wa-bubble-user: #dcf8c6;
  --wa-bubble-bot: #ffffff;
  --wa-header-bg: #075e54;
  --wa-header-text: #ffffff;
  --wa-input-bg: #f0f0f0;
  --wa-text: #303030;
  --wa-text-muted: #667781;
  --wa-shadow: rgba(0, 0, 0, 0.1);
  --wa-border: #e0e0e0;
  --panel-bg: #f7f7f7;
  --panel-border: #ddd;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--wa-bg-pattern);
  color: var(--wa-text);
  min-height: 100vh;
  overflow: hidden;
}

.app {
  display: flex;
  height: 100vh;
  max-width: 100%;
}

/* Panel lateral de escenarios */
.scenarios-panel {
  width: 280px;
  min-width: 280px;
  background: var(--panel-bg);
  border-right: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  transition: margin-left 0.2s ease, min-width 0.2s ease;
}

.scenarios-panel.collapsed {
  margin-left: -280px;
  min-width: 0;
  width: 0;
  overflow: hidden;
}

.scenarios-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--panel-border);
  background: #fff;
}

.scenarios-header h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.toggle-panel {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  padding: 4px 8px;
  color: var(--wa-text-muted);
}

.toggle-panel:hover {
  color: var(--wa-text);
}

.scenarios-content {
  padding: 12px;
  overflow-y: auto;
  flex: 1;
}

.scenarios-hint {
  font-size: 0.8rem;
  color: var(--wa-text-muted);
  margin: 0 0 12px;
}

.scenario-option {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
  cursor: pointer;
  font-size: 0.95rem;
}

.scenario-option input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.known-plate-text {
  font-size: 0.85rem;
  color: var(--wa-text-muted);
  margin: 12px 0 16px;
  padding-top: 8px;
  border-top: 1px solid var(--panel-border);
}

.scenario-btn {
  display: block;
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 8px;
  border: 1px solid var(--wa-border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  font-size: 0.9rem;
  text-align: left;
  transition: background 0.15s, border-color 0.15s;
}

.scenario-btn:hover {
  background: #f0f0f0;
  border-color: var(--wa-header-bg);
}

.scenario-btn.reset {
  margin-top: 16px;
  border-color: #c62828;
  color: #c62828;
}

.scenario-btn.reset:hover {
  background: #ffebee;
}

.scenario-btn.salida {
  border-color: #2e7d32;
  color: #2e7d32;
}

.scenario-btn.salida:hover:not(:disabled) {
  background: #e8f5e9;
}

.scenario-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.open-panel-fab {
  position: fixed;
  left: 12px;
  bottom: 24px;
  z-index: 20;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--wa-header-bg);
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
  box-shadow: 0 2px 8px var(--wa-shadow);
  display: none;
}

.open-panel-fab.visible {
  display: block;
}

/* Contenedor del chat */
.chat-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  max-width: 800px;
  margin: 0 auto;
  background: #fff;
  box-shadow: 0 0 10px var(--wa-shadow);
}

/* Header tipo WhatsApp */
.chat-header {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  background: var(--wa-header-bg);
  color: var(--wa-header-text);
  gap: 12px;
}

.header-avatar {
  flex-shrink: 0;
}

.avatar-placeholder {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.header-info {
  flex: 1;
  min-width: 0;
}

.header-info h1 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.status {
  font-size: 0.8rem;
  opacity: 0.9;
}

.header-actions {
  flex-shrink: 0;
}

.tenant-select {
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 0.85rem;
  cursor: pointer;
}

.tenant-select option {
  background: #fff;
  color: #333;
}

/* Área de mensajes */
.messages-wrapper {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--wa-bg-chat);
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23d4cdc4' fill-opacity='0.4'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.empty-chat-hint {
  align-self: center;
  max-width: 320px;
  margin: auto;
  padding: 16px;
  font-size: 0.9rem;
  color: var(--wa-text-muted);
  text-align: center;
  line-height: 1.4;
}

.empty-chat-hint[hidden] {
  display: none;
}

.message {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  max-width: 85%;
  animation: messageIn 0.2s ease;
}

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

.message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message .bubble {
  padding: 8px 12px;
  border-radius: 8px;
  box-shadow: 0 1px 1px var(--wa-shadow);
  position: relative;
  word-wrap: break-word;
}

.message.bot .bubble {
  background: var(--wa-bubble-bot);
  border-top-left-radius: 2px;
}

.message.user .bubble {
  background: var(--wa-bubble-user);
  border-top-right-radius: 2px;
}

.message .content {
  white-space: pre-wrap;
  font-size: 0.95rem;
  line-height: 1.4;
}

.message .meta {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
}

.message .time {
  font-size: 0.7rem;
  color: var(--wa-text-muted);
}

.message.user .time {
  color: rgba(0, 0, 0, 0.45);
}

.message .ticks {
  font-size: 0.7rem;
  color: #4fc3f7;
}

.message-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.message-actions .action-btn {
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--wa-header-bg);
  background: var(--wa-header-bg);
  color: #fff;
  font-size: 0.9rem;
  cursor: pointer;
  transition: opacity 0.15s;
}

.message-actions .action-btn:hover {
  opacity: 0.9;
}

.message-actions .action-btn.secondary {
  background: #fff;
  color: var(--wa-header-bg);
}

.typing-indicator {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  margin: 0 16px 8px;
  background: var(--wa-bubble-bot);
  border-radius: 8px;
  width: fit-content;
  box-shadow: 0 1px 1px var(--wa-shadow);
}

.typing-indicator.visible {
  display: flex;
}

.typing-dots {
  display: flex;
  gap: 4px;
}

.typing-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--wa-text-muted);
  animation: typingBounce 1.4s ease-in-out infinite both;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
  0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

.typing-text {
  font-size: 0.85rem;
  color: var(--wa-text-muted);
}

/* Input area */
.input-area {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--wa-input-bg);
  border-top: 1px solid var(--wa-border);
}

.input-area input {
  flex: 1;
  padding: 10px 16px;
  border: none;
  border-radius: 24px;
  font-size: 1rem;
  background: #fff;
  outline: none;
}

.input-area input::placeholder {
  color: var(--wa-text-muted);
}

.send-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--wa-header-bg);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: opacity 0.15s;
}

.send-btn:hover {
  opacity: 0.9;
}

.send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Modal WhatsApp Flow */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.modal-overlay[hidden] {
  display: none;
}

.modal-flow {
  background: #fff;
  border-radius: 12px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--wa-header-bg);
  color: #fff;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.1rem;
}

.modal-close {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}

.modal-body {
  padding: 20px;
}

.flow-intro {
  margin: 0 0 16px;
  font-size: 0.9rem;
  color: var(--wa-text-muted);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  font-weight: 500;
}

.form-group select,
.form-group input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--wa-border);
  border-radius: 8px;
  font-size: 1rem;
}

.form-group select:disabled {
  background: #f5f5f5;
  cursor: not-allowed;
}

.modal-footer {
  display: flex;
  gap: 12px;
  padding: 16px 20px;
  border-top: 1px solid var(--wa-border);
}

.modal-footer .btn-secondary,
.modal-footer .btn-primary {
  flex: 1;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  border: 1px solid var(--wa-border);
  background: #fff;
}

.modal-footer .btn-primary {
  background: var(--wa-header-bg);
  color: #fff;
  border-color: var(--wa-header-bg);
}

.modal-footer .btn-primary:hover,
.modal-footer .btn-secondary:hover {
  opacity: 0.9;
}

/* Responsive */
@media (max-width: 768px) {
  .scenarios-panel:not(.collapsed) {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 30;
    margin-left: 0;
    box-shadow: 4px 0 12px var(--wa-shadow);
  }

  .scenarios-panel.collapsed {
    margin-left: -280px;
  }

  .open-panel-fab.visible {
    display: block;
  }

  .chat-header {
    flex-wrap: wrap;
  }

  .tenant-select {
    width: 100%;
    margin-top: 4px;
  }

  .message {
    max-width: 90%;
  }
}