/* ============================================================
   chat.css — Estilos del Agente de Diagnóstico de Madurez IA
   Be+People | Paleta oficial
   ============================================================ */

:root {
  --bg:       #0A0F1E;
  --bg2:      #111827;
  --accent1:  #D4A017;   /* dorado — CTAs */
  --accent3:  #22C55E;   /* verde diferenciador */
  --blue:     #60A5FA;   /* azul tech — títulos */
  --blue-btn: #2563EB;   /* azul botón */
  --muted:    #94A3B8;   /* texto secundario */
  --text:     #E2E8F0;   /* texto claro */
  --border:   rgba(255,255,255,0.08);
  --bubble-user: #1E293B;
  --bubble-agent: rgba(96,165,250,0.08);
  --radius:   12px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Outfit', system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.6;
}

/* ── Layout principal ── */
.chat-layout {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 720px;
  margin: 0 auto;
}

/* ── Header ── */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(10,15,30,0.95);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.chat-header__logo {
  height: 32px;
  width: auto;
}

.chat-header__tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent1);
  background: rgba(212,160,23,0.1);
  border: 1px solid rgba(212,160,23,0.25);
  padding: 3px 10px;
  border-radius: 20px;
}

/* ── Barra de progreso ── */
.chat-progress {
  padding: 10px 20px 8px;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
}

.chat-progress__info {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
}

.chat-progress__bar {
  height: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}

.chat-progress__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--blue-btn), var(--blue));
  border-radius: 2px;
  transition: width 0.4s ease;
  width: 0%;
}

/* ── Área de mensajes ── */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-track { background: transparent; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── Burbujas de mensajes ── */
.chat-bubble {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  max-width: 88%;
  animation: fadeUp 0.25s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.chat-bubble--agent {
  align-self: flex-start;
}

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

.chat-bubble__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

.chat-bubble--agent .chat-bubble__avatar {
  background: linear-gradient(135deg, var(--blue-btn), var(--blue));
  color: white;
}

.chat-bubble--user .chat-bubble__avatar {
  background: rgba(255,255,255,0.08);
  color: var(--muted);
}

.chat-bubble__content {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.65;
}

.chat-bubble--agent .chat-bubble__content {
  background: var(--bubble-agent);
  border: 1px solid rgba(96,165,250,0.15);
  border-top-left-radius: 4px;
  color: var(--text);
}

.chat-bubble--user .chat-bubble__content {
  background: var(--bubble-user);
  border: 1px solid var(--border);
  border-top-right-radius: 4px;
  color: var(--text);
}

/* ── Opciones de respuesta rápida ── */
.chat-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 20px 10px;
  max-height: 48vh;
  overflow-y: auto;
}

.chat-option-btn {
  background: transparent;
  border: 1px solid rgba(96,165,250,0.3);
  color: var(--blue);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}

.chat-option-btn:hover {
  background: rgba(96,165,250,0.1);
  border-color: var(--blue);
}

/* ── Opciones verticales numeradas (Fase 3) — 2 columnas ── */
.opciones-verticales {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.opcion-item {
  width: 100%;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.15s;
}

.opcion-item:hover {
  background: rgba(96,165,250,0.06);
  border-color: rgba(96,165,250,0.35);
}

.opcion-item:active {
  background: rgba(96,165,250,0.12);
}

.opcion-num {
  min-width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  flex-shrink: 0;
}

.opcion-texto {
  line-height: 1.4;
}

/* ── Opciones multi-selección (Áreas, Tecnologías) — 2 columnas ── */
.opciones-multi {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.opcion-multi-item {
  width: 100%;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text);
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.15s;
}

.opcion-multi-item:hover {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.18);
}

.opcion-multi-item.selected {
  background: rgba(96,165,250,0.08);
  border-color: rgba(96,165,250,0.4);
  color: var(--blue);
}

.opcion-multi-check {
  width: 16px;
  height: 16px;
  border: 1.5px solid rgba(255,255,255,0.2);
  border-radius: 4px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  transition: all 0.15s;
}

.opcion-multi-item.selected .opcion-multi-check {
  background: var(--blue);
  border-color: var(--blue);
}

.opcion-multi-item.selected .opcion-multi-check::after {
  content: '✓';
  color: white;
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
}

.opcion-multi-label {
  line-height: 1.4;
}

.opcion-confirmar {
  grid-column: 1 / -1; /* span ambas columnas */
  background: var(--accent1);
  color: #0a0f1e;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  margin-top: 4px;
  transition: background 0.15s;
  align-self: flex-start;
}

.opcion-confirmar:hover:not(:disabled) {
  background: #e6b420;
}

.opcion-confirmar:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ── Botones de selección de rol ── */
.opciones-rol {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.opcion-rol {
  width: 100%;
  background: transparent;
  border: 1px solid rgba(212,160,23,0.3);
  color: var(--text);
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s;
}

.opcion-rol:hover {
  background: rgba(212,160,23,0.08);
  border-color: var(--accent1);
  color: var(--accent1);
}

/* ── Indicador "escribiendo" ── */
.chat-typing {
  display: flex;
  gap: 10px;
  align-items: center;
  align-self: flex-start;
}

.chat-typing__dots {
  display: flex;
  gap: 4px;
  padding: 12px 16px;
  background: var(--bubble-agent);
  border: 1px solid rgba(96,165,250,0.15);
  border-radius: var(--radius);
  border-top-left-radius: 4px;
}

.chat-typing__dot {
  width: 6px;
  height: 6px;
  background: var(--blue);
  border-radius: 50%;
  opacity: 0.4;
  animation: dotPulse 1.4s infinite ease-in-out;
}

.chat-typing__dot:nth-child(2) { animation-delay: 0.2s; }
.chat-typing__dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotPulse {
  0%, 80%, 100% { opacity: 0.4; transform: scale(1); }
  40%           { opacity: 1;   transform: scale(1.2); }
}

/* ── Input de texto ── */
.chat-input-area {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg2);
}

.chat-input-form {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

.chat-input {
  flex: 1;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 10px 18px;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  resize: none;
  outline: none;
  min-height: 44px;
  max-height: 120px;
  line-height: 1.5;
  transition: border-color 0.15s;
}

.chat-input::placeholder { color: var(--muted); }
.chat-input:focus { border-color: rgba(96,165,250,0.4); }

.chat-send-btn {
  width: 44px;
  height: 44px;
  background: var(--blue-btn);
  border: none;
  border-radius: 50%;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s, transform 0.1s;
}

.chat-send-btn:hover:not(:disabled) { background: var(--blue); }
.chat-send-btn:active:not(:disabled) { transform: scale(0.95); }
.chat-send-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.chat-send-btn svg { width: 18px; height: 18px; }

/* ── Footer ── */
.chat-footer {
  padding: 10px 20px;
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.chat-footer a { color: var(--accent1); text-decoration: none; }

/* ── Estado: diagnóstico completado ── */
.chat-completado {
  text-align: center;
  padding: 32px 20px;
}

.chat-completado__icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.chat-completado__titulo {
  font-size: 20px;
  font-weight: 600;
  color: var(--blue);
  margin-bottom: 8px;
}

.chat-completado__subtitulo {
  color: var(--muted);
  margin-bottom: 24px;
}

.chat-completado__spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255,255,255,0.1);
  border-top-color: var(--accent1);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ── */
@media (max-width: 480px) {
  .chat-header { padding: 12px 16px; }
  .chat-messages { padding: 16px; }
  .chat-input-area { padding: 12px 16px; }
  .chat-bubble { max-width: 95%; }
}