/*
  IMPORTANT: This application MUST be placed in the /ai folder.
  Server access URL will be ip/ai
  DO NOT change this path structure under any circumstances.
*/
/*
  Component Styles: Buttons, Inputs, Error Messages, etc.
*/

/* 错误消息样式 */
.error-message {
  background-color: #fff1f2;
  color: #be123c;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 1px solid #fecdd3;
  margin: var(--spacing-xl) auto;
  max-width: 500px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: 14px;
  font-weight: 500;
}
.error-message i {
  font-size: 18px;
  color: #e11d48;
}

/* Input Container (shared by initial and chat view) */
.input-container {
  display: flex;
  align-items: flex-end;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-sm) var(--spacing-md);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-normal), border-color var(--transition-normal);
  position: relative;
}
.input-container:focus-within {
  box-shadow: var(--shadow-lg), 0 0 0 2px rgba(37, 99, 235, 0.2);
  border-color: var(--border-color-focus);
}

.chat-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-primary);
  background: transparent;
  resize: none;
  overflow-y: hidden;
  min-height: 24px;
  padding: 8px 0;
  max-height: 120px;
}
.chat-input::placeholder {
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
}
.chat-input:focus::placeholder { color: #cbd5e1; }
.chat-input.input-shake {
  animation: shake 0.3s ease-in-out;
}

/* Send Button */
.send-button {
  background: var(--sjtu-gradient);
  border: none;
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-on-color);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
  margin-left: var(--spacing-sm);
  align-self: flex-end;
}
.send-button:hover {
  background-image: var(--sjtu-hover-gradient);
  transform: scale(1.05) translateY(-1px);
  box-shadow: var(--shadow-md);
}
.send-button:active {
  transform: scale(0.98);
}
.send-button i { font-size: 18px; }

/* Suggestion Bubble (Base Style) */
.suggestion-bubble {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 8px var(--spacing-md);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-xs);
  color: var(--text-secondary);
  font-weight: 500;
}
.suggestion-bubble i {
  color: var(--sjtu-blue);
  font-size: 14px;
  opacity: 0.8;
  transition: color var(--transition-normal), opacity var(--transition-normal);
}
.suggestion-bubble:hover {
  background-color: var(--bg-selected);
  border-color: rgba(37, 99, 235, 0.3);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  color: var(--sjtu-blue-dark);
  text-decoration: none; /* 确保按钮悬停无下划线 */
}
.suggestion-bubble:hover i {
  color: var(--sjtu-blue-dark);
  opacity: 1;
}
.suggestion-bubble:active {
  transform: translateY(0px) scale(0.98);
  box-shadow: var(--shadow-inner);
}

/* Resource Item (inside Card) */
.resource-item {
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
  color: var(--text-secondary);
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  text-align: center;
  aspect-ratio: 1 / 1;
}
.resource-item:hover {
  background: var(--bg-selected);
  transform: translateY(-3px) scale(1.03);
  border-color: rgba(37, 99, 235, 0.15);
  box-shadow: var(--shadow-sm);
  color: var(--sjtu-blue-dark);
  text-decoration: none; /* 确保无下划线 */
}
.resource-item i {
  color: var(--sjtu-blue);
  font-size: 22px;
  transition: color var(--transition-normal);
  margin-bottom: var(--spacing-xs);
}
.resource-item:hover i { color: var(--sjtu-blue-dark); }
.resource-item span {
  font-size: 12px;
  font-weight: 500;
  line-height: 1.3;
}