/*
  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.
*/
/* 
  Layout Styles: Header, Main Wrapper, Footer
*/

/* 主布局 */
.app-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
  align-items: stretch; /* 确保子项（header/footer/main）横向拉伸 */
}

/* 头部样式 */
.app-header {
  background-image: var(--sjtu-gradient);
  padding: calc(env(safe-area-inset-top, 0)) var(--spacing-lg) 0 var(--spacing-lg);
  height: 50px;
  display: flex;
  justify-content: space-between;
  flex-wrap: nowrap;
  align-items: center;
  box-shadow: var(--shadow-md);
  position: relative; /* 避免部分 iOS 对 sticky+flex 的渲染异常 */
  top: 0;
  z-index: 1000;
  color: var(--text-on-color);
  width: 100%;
  min-width: 100%;
  left: 0;
  right: 0;
  margin-left: 0;
  margin-right: 0; /* 简化为标准全宽 */
  align-self: stretch; /* 作为列方向的 flex 子项占满横向 */
  max-width: none; /* 避免被外部容器限制 */
  position: relative;
}

/* 全幅背景（iOS Safari 兼容）：用伪元素扩展背景到视口宽度 */
.app-header { position: relative; }
.app-header::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  top: 0;
  bottom: 0;
  background-image: var(--sjtu-gradient);
}

.app-logo {
  width: 36px; /* 恢复稍大的尺寸 */
  height: 36px;
  margin-right: var(--spacing-sm);
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.2));
  transition: transform var(--transition-normal);
}
.app-logo:hover { transform: rotate(10deg) scale(1.1); }

.app-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.title-divider {
  width: 1.5px;
  height: 18px;
  background-color: rgba(255, 255, 255, 0.4);
  margin: 0 var(--spacing-md);
  border-radius: 1px;
}

.app-subtitle {
  font-size: 18px; /* 恢复更醒目的字号 */
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
}

.user-dropdown {
  margin-left: 0;
  background-color: rgba(255, 255, 255, 0.15);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  cursor: pointer;
  transition: background-color var(--transition-normal), transform var(--transition-fast), box-shadow var(--transition-normal);
  font-size: 13px;
  font-weight: 700;
  box-shadow: var(--shadow-xs);
}
.user-dropdown:hover {
  background-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.dropdown-arrow {
  margin-left: var(--spacing-sm);
  transform: rotate(90deg);
  transition: transform var(--transition-normal);
}
.user-dropdown:hover .dropdown-arrow { transform: rotate(90deg) scale(1.1); }

/* Language toggle (capsule) */
.lang-switcher-toggle {
  margin-left: 12px;
}
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 9999px;
  padding: 2px 10px;
  color: #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  backdrop-filter: saturate(140%) blur(4px);
}
.lang-option {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: none;
  color: rgba(255,255,255,0.85);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: .3px;
  padding: 6px 8px;
  border-radius: 9999px;
  cursor: pointer;
  transition: color var(--transition-normal), background-color var(--transition-normal), transform var(--transition-fast);
}
.lang-option:hover {
  color: #fff;
  transform: translateY(-1px);
}
.lang-option.active {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.lang-sep { color: rgba(255,255,255,0.5); font-weight: 700; }

/* Header right container: language + user */
.header-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap; /* 防止换行堆叠 */
}

/* 主内容包裹器 & 内容区域 */
.main-wrapper {
  flex: 1;
  padding-top: var(--spacing-xl); /* Keep top padding */
  padding-bottom: var(--spacing-xl); /* Keep bottom padding */
  /* Removed horizontal padding: var(--spacing-md) */
  width: 100%;
}

.main-content {
  /* max-width: var(--max-content-width); */ /* Removed max-width */
  /* margin: 0 auto; */ /* Removed auto horizontal margins */
  margin-left: 0;
  margin-right: 0;
  width: 100%; /* Ensure it takes full width */
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  align-self: stretch;
}

/* 页脚 */
.footer {
  background-color: var(--bg-subtle);
  padding: var(--spacing-lg) var(--spacing-md) calc(var(--spacing-lg) + env(safe-area-inset-bottom, 0)) var(--spacing-md);
  text-align: center;
  font-size: 12px;
  color: var(--text-tertiary);
  border-top: 1px solid var(--border-color);
  margin-top: var(--spacing-2xl);
  width: 100%;
  min-width: 100%;
  left: 0;
  right: 0;
  margin-left: 0;
  margin-right: 0;
  align-self: stretch;
  max-width: none;
  position: static; /* 避免在特定移动端布局下停留在中间的位置 */
}

.footer::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  top: 0;
  bottom: 0;
  background-color: var(--bg-subtle);
}

/* 移动端兜底：强制头部/主体/页脚占满宽度，避免 iOS 渲染异常导致看起来只有 2/3 宽 */
@media (max-width: 768px) {
  html, body, .app-layout, .main-wrapper, .main-content, .app-header, .footer {
    width: 100% !important;
    max-width: 100% !important;
  }
}

/* Header Link Styles */
.app-header .header-link {
  display: flex; /* Arrange items horizontally */
  align-items: center; /* Vertically center items */
  gap: 10px; /* Add space between logo and text */
  text-decoration: none; /* Remove underline from link */
  color: inherit; /* Inherit text color */
}

.app-header .header-link .app-subtitle {
    margin: 0; /* Reset potential default margins */
}

/* Global body loading opacity effect */
body {
  opacity: 0;
  transition: opacity 0.5s ease-out;
}
body.loaded {
  opacity: 1;
} 

/* Mobile tweaks for language switcher */
@media (max-width: 480px) {
  .header-right { gap: 8px; }
  .lang-switcher-toggle { margin-left: 8px; }
  .lang-toggle { padding: 2px 6px; gap: 4px; }
  .lang-option { font-size: 11px; padding: 4px 6px; }
  .lang-sep { display: none; }
}