/* Input Area (Fixed at Bottom) */

#input-wrapper {
  background: rgba(23, 23, 23, 0.95);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  flex-shrink: 0;
}

#chat-form {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
}

.input-container {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 0.5rem;
  transition: all var(--transition);
}

.input-container:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
}

#user-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-family: inherit;
  resize: none;
  outline: none;
  min-height: 24px;
  max-height: 200px;
  line-height: 1.5;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

#user-input::-webkit-scrollbar {
  width: 6px;
}

#user-input::-webkit-scrollbar-track {
  background: transparent;
}

#user-input::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

#user-input::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

#user-input::placeholder {
  color: var(--text-muted);
}

#send {
  background: var(--accent);
  border: none;
  color: white;
  padding: 0.75rem;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

#send:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4);
}

#send:active:not(:disabled) {
  transform: translateY(0);
}

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