:root {
  --premium-bg-dark: #050505;
  --premium-glass-bg: rgba(10, 10, 10, 0.85);
  --premium-border: rgba(255, 215, 0, 0.4);
  --premium-accent: linear-gradient(135deg, #FFDF00 0%, #D4AF37 25%, #FFF8DC 50%, #D4AF37 75%, #AA6C39 100%);
  --premium-user-bubble: linear-gradient(135deg, #1e2124 0%, #0a0a0a 100%);
  --premium-bot-bubble: rgba(255, 215, 0, 0.05);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
}

body.premium-mode {
  background-color: var(--premium-bg-dark);
  background-image: 
    radial-gradient(circle at 20% 20%, rgba(255, 215, 0, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(212, 175, 55, 0.08) 0%, transparent 50%);
  color: var(--text-main);
  font-family: 'Outfit', sans-serif;
  margin: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

/* Layout Principal */
.chatbot-wrapper {
  width: 100%;
  max-width: 800px;
  height: 90vh;
  background: var(--premium-glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--premium-border);
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(212, 175, 55, 0.2), inset 0 0 0 1px rgba(212, 175, 55, 0.1);
  position: relative;
  overflow: hidden;
}

/* Header */
.chat-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--premium-border);
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.02);
}

.header-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--premium-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.4);
  color: black;
  font-size: 24px;
}

.header-info h1 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0;
}

.header-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d4af37;
  display: inline-block;
}

.config-btn {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--premium-border);
  color: #d4af37;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}
.config-btn:hover {
  background: rgba(212, 175, 55, 0.1);
}

/* Messages Area */
.chat-messages {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 215, 0, 0.3) transparent;
}

/* Burbujas de Chat */
.message-row {
  display: flex;
  width: 100%;
  margin-bottom: 1.5rem;
}

.message-row.user {
  justify-content: flex-end;
}

.message-row.bot {
  justify-content: flex-start;
}

.bot-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--premium-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 12px;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(212,175,55,0.3);
  color: black;
  font-size: 20px;
}

.message-bubble {
  max-width: 75%;
  padding: 12px 18px;
  color: var(--text-main);
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  font-size: 0.95rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

.message-row.user .message-bubble {
  border-radius: 18px 18px 4px 18px;
  background: var(--premium-user-bubble);
  border: 1px solid rgba(212,175,55,0.2);
}

.message-row.bot .message-bubble {
  border-radius: 18px 18px 18px 4px;
  background: var(--premium-bot-bubble);
  border: 1px solid var(--premium-border);
  backdrop-filter: blur(10px);
}

.message-time {
  font-size: 0.7rem;
  opacity: 0.5;
  margin-top: 8px;
}
.message-row.user .message-time { text-align: right; }

/* Menú Inicial */
.menu-options {
  display: flex;
  gap: 10px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.btn-menu-premium {
  background: var(--premium-accent);
  border: none;
  color: black;
  padding: 10px 16px;
  border-radius: 20px;
  cursor: pointer;
  font-weight: 600;
  display: flex;
  gap: 6px;
  align-items: center;
  box-shadow: 0 4px 10px rgba(212,175,55,0.2);
}

/* Typing Indicator */
.typing-dots {
  display: flex;
  gap: 4px;
  padding: 4px 0;
}
.typing-dots div {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: pulseDot 1.4s infinite ease-in-out both;
}
.typing-dots div:nth-child(1) { animation-delay: -0.32s; }
.typing-dots div:nth-child(2) { animation-delay: -0.16s; }

/* Input Area */
.chat-input-form {
  display: flex;
  gap: 12px;
  padding: 20px 24px;
  border-top: 1px solid var(--premium-border);
  background: rgba(0, 0, 0, 0.2);
}

.chat-input-form textarea {
  flex: 1;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  padding: 14px 20px;
  color: white;
  font-size: 0.95rem;
  resize: none;
  outline: none;
  font-family: inherit;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
  transition: border-color 0.3s ease;
}
.chat-input-form textarea:focus {
  border-color: var(--premium-border);
}

.send-btn {
  background: rgba(255, 255, 255, 0.05);
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: not-allowed;
  transition: all 0.3s ease;
  flex-shrink: 0;
  font-size: 20px;
}
.send-btn.active {
  background: var(--premium-accent);
  color: #000;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
}

/* Modal API Key */
.modal-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(5px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}
.modal-overlay.hidden { display: none; }

.modal-content {
  background: #111;
  border: 1px solid var(--premium-border);
  padding: 24px;
  border-radius: 16px;
  width: 90%;
  max-width: 400px;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.modal-header h3 { margin: 0; color: #d4af37; }
.modal-header button {
  background: transparent; border: none; color: white; cursor: pointer; font-size: 20px;
}
.modal-content input {
  width: 100%;
  padding: 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  color: white;
  margin-bottom: 16px;
}
.save-btn {
  width: 100%;
  background: var(--premium-accent);
  border: none;
  padding: 12px;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
}

/* Tarjeta Premium (PremiumCard) */
.premium-card {
  width: 100%;
  max-width: 450px;
  background: linear-gradient(180deg, rgba(20,20,20,0.95) 0%, rgba(5,5,5,0.98) 100%);
  border: 1px solid rgba(255,215,0,0.3);
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.6);
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
}

.premium-card-header-line {
  position: absolute;
  top: 0; left: 0; right: 0; height: 6px;
  background: var(--premium-accent);
  box-shadow: 0 0 10px rgba(255,215,0,0.8);
}

.premium-card-title-area {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.premium-card-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255,215,0,0.15) 0%, rgba(212,175,55,0.05) 100%);
  border: 1px solid rgba(255,215,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFDF00;
  box-shadow: 0 0 15px rgba(255,215,0,0.2);
  font-size: 32px;
}

.premium-card h3 { font-size: 1.2rem; margin: 0; }
.premium-card h4 { font-size: 1.25rem; color: white; margin: 0 0 12px 0; }
.premium-card p { font-size: 0.95rem; color: rgba(255,255,255,0.8); margin-bottom: 24px; line-height: 1.6; }

.download-btn {
  background: var(--premium-accent);
  color: #000;
  border: none;
  border-radius: 12px;
  padding: 10px 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: 0 5px 15px rgba(255,215,0,0.3);
  transition: all 0.3s ease;
}
.download-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(255,215,0,0.5);
}

/* Animaciones */
@keyframes slideUpBounce {
  0% { opacity: 0; transform: translateY(30px); }
  60% { opacity: 1; transform: translateY(-5px); }
  100% { opacity: 1; transform: translateY(0); }
}

@keyframes pulseDot {
  0%, 100% { transform: scale(0.8); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 15px rgba(212,175,55,0.2), inset 0 0 10px rgba(212,175,55,0.1); }
  50% { box-shadow: 0 0 25px rgba(255,215,0,0.5), inset 0 0 15px rgba(255,215,0,0.2); }
}

.animate-slide-up {
  animation: slideUpBounce 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.shimmer-text {
  background: var(--premium-accent);
  background-size: 200% auto;
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  animation: shimmer 4s linear infinite;
}

.glow-effect { animation: glow-pulse 3s infinite alternate; }

.card-3d-hover {
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}
.card-3d-hover:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0,0,0,0.6), 0 0 30px rgba(255,215,0,0.3) !important;
}