:root {
  /* Fallbacks in case outside Telegram client */
  --bg-color: var(--tg-theme-bg-color, #0f172a);
  --secondary-bg-color: var(--tg-theme-secondary-bg-color, #1e293b);
  --text-color: var(--tg-theme-text-color, #f8fafc);
  --hint-color: var(--tg-theme-hint-color, #94a3b8);
  --link-color: var(--tg-theme-link-color, #38bdf8);
  --button-color: var(--tg-theme-button-color, #2563eb);
  --button-text-color: var(--tg-theme-button-text-color, #ffffff);

  --accent-gradient: linear-gradient(135deg, #2563eb 0%, #0284c7 100%);
  --bubble-user-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  --bubble-bot-bg: rgba(30, 41, 59, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(15, 23, 42, 0.75);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.chat-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
  position: relative;
  background-color: var(--bg-color);
}

/* Header */
.chat-header {
  padding: 12px 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 10;
}

.bot-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar-wrapper {
  position: relative;
}

.bot-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.status-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 12px;
  height: 12px;
  background-color: #22c55e;
  border: 2px solid var(--bg-color);
  border-radius: 50%;
}

.bot-details h2 {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
}

.bot-details p {
  font-size: 12px;
  color: var(--hint-color);
}

.model-badge {
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.3);
  color: #60a5fa;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 12px;
  letter-spacing: 0.3px;
}

/* Quick Commands */
.quick-commands {
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  overflow-x: auto;
  white-space: nowrap;
  background: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  scrollbar-width: none;
}

.quick-commands::-webkit-scrollbar {
  display: none;
}

.cmd-chip {
  background: var(--secondary-bg-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.cmd-chip:hover, .cmd-chip:active {
  background: var(--button-color);
  color: var(--button-text-color);
  border-color: transparent;
  transform: translateY(-1px);
}

/* Chat Messages */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.message {
  display: flex;
  width: 100%;
}

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

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

.message-bubble {
  max-width: 82%;
  padding: 10px 14px;
  border-radius: 16px;
  position: relative;
  word-wrap: break-word;
  line-height: 1.45;
  font-size: 14px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  animation: fadeInBubble 0.2s ease-out;
}

@keyframes fadeInBubble {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.bot-message .message-bubble {
  background: var(--bubble-bot-bg);
  border: 1px solid var(--border-color);
  border-bottom-left-radius: 4px;
  backdrop-filter: blur(8px);
}

.user-message .message-bubble {
  background: var(--bubble-user-gradient);
  color: #ffffff;
  border-bottom-right-radius: 4px;
}

.msg-time {
  display: block;
  font-size: 10px;
  margin-top: 4px;
  text-align: right;
  opacity: 0.65;
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  font-size: 12px;
  color: var(--hint-color);
}

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

.dots span {
  width: 6px;
  height: 6px;
  background-color: var(--hint-color);
  border-radius: 50%;
  animation: pulse 1.4s infinite ease-in-out both;
}

.dots span:nth-child(1) { animation-delay: -0.32s; }
.dots span:nth-child(2) { animation-delay: -0.16s; }

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

/* Input Bar */
.chat-input-bar {
  padding: 10px 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-color);
}

#chat-form {
  display: flex;
  align-items: center;
  gap: 10px;
}

#message-input {
  flex: 1;
  background: var(--secondary-bg-color);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  padding: 12px 16px;
  border-radius: 24px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

#message-input:focus {
  border-color: var(--button-color);
}

#message-input::placeholder {
  color: var(--hint-color);
}

#send-button {
  background: var(--accent-gradient);
  color: #ffffff;
  border: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
  transition: transform 0.15s, opacity 0.15s;
}

#send-button:active {
  transform: scale(0.92);
}