/* ===== Chat Panel ===== */
.chat-panel {
  width: 40%;
  min-width: 360px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  position: relative;
  background: var(--bg);
  order: 1; /* Left on desktop */
  min-height: 0; /* Required for flex children to scroll */
}

/* ===== Messages ===== */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 0; /* Required for flex children to scroll */
}

.welcome-message {
  text-align: center;
  padding: 60px 30px;
  color: var(--text-secondary);
}

.welcome-message h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.welcome-message p {
  font-size: 14px;
  line-height: 1.6;
  max-width: 320px;
  margin: 0 auto;
}

.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 20px;
}

.quick-btn {
  padding: 8px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.quick-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

/* Message bubbles */
.message {
  max-width: 85%;
  animation: msgIn 0.3s ease;
}

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

.message.agent {
  align-self: flex-start;
}

.message-content {
  padding: 10px 14px;
  border-radius: var(--radius-lg);
  font-size: 14px;
  line-height: 1.6;
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
  overflow: hidden;
}

.message.user .message-content {
  background: var(--accent);
  color: white;
  border-bottom-right-radius: 4px;
}

.message.agent .message-content {
  background: var(--bg-elevated);
  color: var(--text);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--border);
}

.message-content p { margin-bottom: 8px; }
.message-content p:last-child { margin-bottom: 0; }
.message-content ul, .message-content ol { padding-left: 20px; margin-bottom: 8px; }
.message-content code {
  background: rgba(0,0,0,0.2);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 13px;
}
.message-content pre {
  background: rgba(0,0,0,0.3);
  padding: 10px;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 8px 0;
}
.message-content pre code {
  background: none;
  padding: 0;
}
.message-content strong { font-weight: 600; }

.message-attachment {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  padding: 6px 10px;
  background: rgba(0,0,0,0.15);
  border-radius: 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.message-attachment svg {
  flex-shrink: 0;
  opacity: 0.6;
}

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

/* Streaming cursor */
.streaming-cursor {
  display: inline-block;
  width: 6px;
  height: 14px;
  background: var(--accent);
  border-radius: 1px;
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.8s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ===== Drop Overlay ===== */
.drop-overlay {
  position: absolute;
  inset: 0;
  background: rgba(99, 102, 241, 0.08);
  border: 2px dashed var(--accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.drop-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.drop-overlay-content {
  text-align: center;
  color: var(--accent);
}

.drop-overlay-content p {
  margin-top: 12px;
  font-size: 15px;
  font-weight: 500;
}

/* ===== Input Area ===== */
.chat-input-area {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
}

.attachment-preview {
  padding: 8px 0;
}

.attachment-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}

.attachment-remove {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 0 2px;
}

.attachment-remove:hover {
  color: var(--red);
}

.chat-input-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.file-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.file-btn:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.chat-input {
  flex: 1;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 9px 14px;
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  resize: none;
  outline: none;
  max-height: 120px;
  line-height: 1.5;
  transition: border-color var(--transition);
}

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

.chat-input:focus {
  border-color: var(--accent);
}

.send-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background: var(--accent);
  border: none;
  color: white;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.send-btn:hover {
  background: var(--accent-hover);
}

.send-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ===== Mobile Chat ===== */
@media (max-width: 768px) {
  .chat-panel {
    width: 100%;
    min-width: 0;
    border-right: none;
    overflow: hidden;
  }

  .chat-messages {
    height: 0;
    flex-grow: 1;
    padding: 10px;
    gap: 10px;
    overflow-y: scroll;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
  }

  .chat-input-area {
    flex-shrink: 0;
  }

  .welcome-message {
    padding: 20px 16px;
  }

  .welcome-message h2 {
    font-size: 15px;
  }

  .welcome-message p {
    font-size: 13px;
    max-width: 100%;
  }

  .message {
    max-width: 95%;
    overflow: hidden;
  }

  .message-content {
    padding: 8px 10px;
    font-size: 13px;
    line-height: 1.5;
    overflow-wrap: break-word;
    word-break: break-word;
    hyphens: auto;
    overflow: hidden;
  }

  /* Prevent tables/pre/code from overflowing the bubble */
  .message-content pre {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 11px;
    padding: 8px;
  }

  .message-content code {
    font-size: 11px;
    word-break: break-all;
  }

  .message-content table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 11px;
  }

  .message-content img {
    max-width: 100%;
    height: auto;
  }

  .message-content ul,
  .message-content ol {
    padding-left: 16px;
    margin-bottom: 6px;
  }

  .message-content li {
    font-size: 13px;
    margin-bottom: 2px;
  }

  .message-content h1,
  .message-content h2,
  .message-content h3 {
    font-size: 14px;
    margin: 8px 0 4px;
    overflow-wrap: break-word;
  }

  .message-content p {
    margin-bottom: 6px;
  }

  .message-content a {
    word-break: break-all;
  }

  .message-attachment {
    font-size: 11px;
    padding: 4px 8px;
  }

  .message-attachment svg {
    width: 12px;
    height: 12px;
  }

  /* Input area */
  .chat-input-area {
    padding: 6px 8px;
    padding-bottom: max(6px, env(safe-area-inset-bottom));
  }

  .chat-input-row {
    gap: 4px;
  }

  .file-btn {
    width: 32px;
    height: 32px;
  }

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

  .chat-input {
    padding: 7px 10px;
    font-size: 16px; /* Prevents iOS zoom on focus */
    border-radius: 6px;
  }

  .send-btn {
    width: 32px;
    height: 32px;
  }

  .send-btn svg {
    width: 16px;
    height: 16px;
  }

  .attachment-item {
    font-size: 11px;
    padding: 4px 8px;
    max-width: 100%;
    overflow: hidden;
  }

  .attachment-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 200px;
  }

  /* Drop overlay */
  .drop-overlay-content svg {
    width: 32px;
    height: 32px;
  }

  .drop-overlay-content p {
    font-size: 13px;
  }

  /* Streaming cursor smaller */
  .streaming-cursor {
    width: 5px;
    height: 12px;
  }
}