/*
  IMPORTANT: This application MUST be placed in the /jwc folder.
  Server access URL will be ip/jwc
  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)
   用途：首页与聊天页的输入框外层通用容器
   覆盖：新生首页在 pages/index-freshman.css 中基于 body.is-freshman 做渐变描边与悬停高亮覆盖
*/
.input-container {
  display: flex;
  align-items: center;
  background: linear-gradient(145deg, #ffffff 0%, #fafbfc 100%);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 14px 18px;
  box-shadow: 
    0 4px 16px rgba(37, 99, 235, 0.06),
    0 2px 8px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  transition: all var(--transition-normal);
  position: relative;
  backdrop-filter: blur(8px);
}
.input-container:focus-within {
  box-shadow: 
    0 6px 24px rgba(37, 99, 235, 0.12),
    0 3px 12px rgba(124, 58, 237, 0.08),
    0 0 0 2px rgba(37, 99, 235, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  border-color: var(--sjtu-blue);
  background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
  transform: translateY(-1px) scale(1.01);
}

/* New: Wrapper for textarea and context buttons */
.input-main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.chat-input {
  flex: 1;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--text-primary);
  background: transparent !important;
  resize: none;
  overflow-y: hidden;
  min-height: 26px;
  padding: 6px 0;
  max-height: 120px;
  margin-bottom: 0;
  font-family: "SF Pro Text", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  letter-spacing: 0.01em;
  transition: all var(--transition-fast);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}
.chat-input::placeholder {
  color: #94a3b8;
  font-weight: 400;
  transition: color var(--transition-fast);
}
.chat-input:focus {
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  background: transparent !important;
}
.chat-input:focus::placeholder { 
  color: #cbd5e1; 
  transform: translateY(-1px);
}
.chat-input.input-shake {
  animation: shake 0.3s ease-in-out;
}

/* Send Button
   用途：发送按钮通用样式（颜色/阴影/交互），新生首页在 pages/index-freshman.css 下覆盖渐变与尺寸
*/
.send-button {
  background: linear-gradient(135deg, var(--sjtu-blue) 0%, var(--sjtu-purple) 100%);
  border: none;
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-on-color);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 
    0 4px 12px rgba(37, 99, 235, 0.2),
    0 2px 4px rgba(124, 58, 237, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  margin-left: var(--spacing-md);
  position: relative;
  overflow: hidden;
}
.send-button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.send-button:hover {
  background: linear-gradient(135deg, var(--sjtu-blue-dark) 0%, var(--sjtu-purple-dark) 100%);
  transform: scale(1.08) translateY(-2px);
  box-shadow: 
    0 6px 20px rgba(37, 99, 235, 0.3),
    0 3px 8px rgba(124, 58, 237, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.send-button:hover::before {
  opacity: 1;
}
.send-button:active {
  transform: scale(0.95) translateY(0);
  box-shadow: 
    0 2px 8px rgba(37, 99, 235, 0.2),
    inset 0 2px 4px rgba(0, 0, 0, 0.1);
}
.send-button i { 
  font-size: 16px; 
  position: relative;
  z-index: 1;
  transition: transform var(--transition-fast);
}
.send-button:hover i {
  transform: translateX(1px);
}

/* Suggestion Bubble (Base Style)
   用途：首页与其它页面可复用的“建议气泡”按钮基础样式
   JS：通过 .suggestion-bubble 绑定点击事件，跳转或设置初始查询
*/
.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;
}

/* Loading Overlay Styles from index.html */
.loading-overlay {
  position: fixed; /* 固定定位覆盖整个视口 */
  inset: 0;
  background-color: rgba(248, 250, 252, 0.9); /* 半透明背景 */
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 18px;
  z-index: 9999; /* 确保在最顶层 */
  opacity: 1;
  transition: opacity 0.4s ease-out;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none; /* 隐藏后不响应事件 */
}

.loading-spinner {
  width: 48px; /* 稍大一点 */
  height: 48px;
  border: 4px solid rgba(124, 58, 237, 0.15); /* 更淡的底色 */
  border-radius: 50%;
  border-top-color: #7c3aed; /* 主题紫色 */
  animation: spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite; /* 动画更柔和 */
}

.loading-text {
  color: #6b21a8; /* 深紫色 */
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.5px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Context Toggle Buttons */
.context-toggle-buttons {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: 0;
  margin-bottom: var(--spacing-xs);
  justify-content: flex-start;
  padding-left: 0;
}

.context-toggle-button {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-xs) var(--spacing-md);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-xs);
}

.context-toggle-button i {
  font-size: 14px;
  opacity: 0.7;
  color: var(--text-secondary);
  transition: color var(--transition-normal), opacity var(--transition-normal);
}

.context-toggle-button:hover {
  background-color: var(--bg-hover);
  border-color: var(--border-color-strong);
  color: var(--text-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.context-toggle-button:hover i {
  opacity: 1;
  color: var(--sjtu-blue);
}

.context-toggle-button.active {
  background-image: var(--sjtu-gradient);
  border-color: transparent;
  color: var(--text-on-color);
  box-shadow: var(--shadow-md), inset 0 1px 1px rgba(255,255,255,0.2);
}

.context-toggle-button.active i {
  color: var(--text-on-color);
  opacity: 1;
}

.context-toggle-button:active:not(.active) { /* Press effect only if not already active */
  transform: translateY(0px) scale(0.98);
  box-shadow: var(--shadow-inner);
} 
}