/* 简约扁平化风格 - 现代化网盘系统 */
:root {
  --primary-color: #1677ff;
  --primary-hover: #4096ff;
  --success-color: #52c41a;
  --warning-color: #faad14;
  --error-color: #ff4d4f;
  --text-primary: #262626;
  --text-secondary: #595959;
  --text-tertiary: #8c8c8c;
  --border-color: #d9d9d9;
  --background-primary: #ffffff;
  --background-secondary: #fafafa;
  --background-tertiary: #f5f5f5;
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-heavy: 0 8px 32px rgba(0, 0, 0, 0.15);
  --border-radius-sm: 6px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
  margin: 0;
  background: linear-gradient(135deg, #f0f2f5 0%, #e6f7ff 100%);
  min-height: 100vh;
  color: var(--text-primary);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  background: var(--background-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-medium);
  overflow: hidden;
  min-height: calc(100vh - 40px);
  margin-top: 20px;
  margin-bottom: 20px;
}

/* 头部样式 */
.header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
  color: white;
  padding: 24px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header h1 {
  margin: 0;
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.header-info {
  font-size: 14px;
  opacity: 0.9;
}

/* 主要内容区域 */
.main-content {
  padding: 32px;
}

/* 登录/初始化区域 */
.auth-section {
  max-width: 400px;
  margin: 60px auto;
  text-align: center;
}

.auth-section h2 {
  color: var(--text-primary);
  font-size: 24px;
  margin-bottom: 24px;
  font-weight: 600;
}

/* 表单控件样式 */
.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 14px;
}

input, select, button {
  transition: all var(--transition-fast);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 12px 16px;
  font-size: 14px;
  outline: none;
  width: 100%;
  margin-bottom: 12px;
}

input:focus, select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(22, 119, 255, 0.1);
  transform: translateY(-1px);
}

/* 按钮样式 */
button {
  background: var(--primary-color);
  color: white;
  border: none;
  cursor: pointer;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 14px;
  padding: 14px 24px;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

button:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

button:active {
  transform: translateY(0);
}

button:disabled {
  background: var(--text-tertiary);
  cursor: not-allowed;
  transform: none;
}

/* 工具条样式 */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding: 20px;
  background: var(--background-secondary);
  border-radius: var(--border-radius-md);
  flex-wrap: wrap;
  gap: 16px;
}

.toolbar-group {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.toolbar input, .toolbar select, .toolbar button {
  width: auto;
  margin-bottom: 0;
}

/* 文件表格样式 */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 0;
  background: var(--background-primary);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-light);
}

th {
  background: var(--background-secondary);
  padding: 16px 12px;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 14px;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 16px 12px;
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-fast);
}

tr:hover td {
  background: var(--background-tertiary);
}

tr:last-child td {
  border-bottom: none;
}
.tooltip { position: absolute; background: rgba(0,0,0,0.75); color: #fff; font-size: 12px; padding: 6px 8px; border-radius: 6px; pointer-events: none; box-shadow: var(--shadow-light); z-index: 10001 }
.tooltip.hidden { display: none }
td button { width: auto; display: inline-flex; align-items: center; justify-content: center; padding: 6px 8px; margin: 2px }
button.icon-btn { width: 36px; height: 36px; padding: 0; display: inline-flex; align-items: center; justify-content: center; border-radius: 10px }

.share-page .container {
  max-width: 560px;
  min-height: auto;
}

.share-page .main-content {
  padding: 20px;
}

.share-page h2 {
  margin: 0 0 12px 0;
  font-size: 20px;
}

.share-page input, .share-page button {
  font-size: 14px;
  padding: 10px 12px;
  margin-bottom: 10px;
  text-transform: none;
  letter-spacing: 0;
}

.share-page .row {
  display: flex;
  gap: 10px;
  align-items: center;
}

.share-page .row input {
  flex: 1;
  margin-bottom: 0;
}

.share-page .row button {
  width: auto;
  margin-bottom: 0;
  padding-left: 14px;
  padding-right: 14px;
}

.share-page #info {
  margin-top: 12px;
}

.share-page #info > div {
  margin: 8px 0;
}

.share-page .row-actions {
  justify-content: flex-end;
}

/* 隐藏类 */
.hidden { display: none }

/* 状态提示 */
#status {
  margin: 16px 0;
  padding: 12px 16px;
  border-radius: var(--border-radius-sm);
  background: var(--background-secondary);
  color: var(--text-secondary);
  font-size: 14px;
}

#statusTop {
  background: var(--background-secondary);
  padding: 8px 32px;
  font-size: 12px;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--border-color);
}

/* 模态框样式 */
.modal {
  position: fixed;
  left: 0; top: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  backdrop-filter: blur(4px);
}

.modal.hidden { display: none }

.modal-content {
  background: var(--background-primary);
  padding: 24px;
  border-radius: var(--border-radius-lg);
  min-width: 400px;
  max-width: 90vw;
  max-height: 80vh;
  overflow: auto;
  box-shadow: var(--shadow-heavy);
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* 其他组件样式 */
.chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 16px 0;
}

.chip {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-fast);
  font-size: 14px;
}

.chip:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.chip.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* 加载动画 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-right: 8px;
}

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

/* 按钮悬停动画 */
button:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

button:active {
  transform: translateY(0);
}

/* 文件项悬停效果 */
.file-item:hover {
  background: var(--background-tertiary);
  transform: translateX(4px);
  transition: all var(--transition-fast);
}

/* 进度条动画 */
.progress-bar {
  transition: width 0.3s ease;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
}

/* 淡入淡出动画 */
.fade-in {
  animation: fadeIn 0.3s ease;
}

.fade-out {
  animation: fadeOut 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeOut {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-10px); }
}

/* 卡片悬停效果 */
.card {
  transition: all var(--transition-fast);
  cursor: pointer;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-heavy);
}

/* 空状态样式 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-tertiary);
}

.empty-state-icon {
  font-size: 64px;
  margin-bottom: 16px;
  opacity: 0.3;
}

.empty-state h3 {
  margin: 0 0 8px 0;
  font-size: 18px;
  font-weight: 500;
}

.empty-state p {
  margin: 0;
  font-size: 14px;
}

/* 移动端响应式 */
@media (max-width: 768px) {
  .container {
    margin: 0;
    border-radius: 0;
    min-height: 100vh;
    box-shadow: none;
  }
  
  .header {
    padding: 16px 20px;
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
  
  .header h1 {
    font-size: 24px;
  }
  
  .main-content {
    padding: 16px;
  }
  
  .auth-section {
    margin: 40px auto;
    max-width: 100%;
  }
  
  .toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 16px;
  }
  
  .toolbar-group {
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .toolbar input, .toolbar select, .toolbar button {
    width: 100%;
    margin-bottom: 8px;
  }
  
  .modal-content {
    min-width: 90vw;
    padding: 16px;
    margin: 16px;
  }
  
  table {
    font-size: 14px;
    display: block;
    overflow-x: auto;
  }
  
  th, td {
    padding: 12px 8px;
    white-space: nowrap;
  }
  
  /* 移动端按钮优化 */
  button {
    padding: 16px 20px;
    font-size: 16px; /* 防止iOS缩放 */
  }
  
  input, select {
    padding: 16px 12px;
    font-size: 16px; /* 防止iOS缩放 */
  }
  
  /* 文件操作按钮优化 */
  td button {
    padding: 8px 12px;
    margin: 2px;
    font-size: 12px;
  }
  
  /* 空状态优化 */
  .empty-state {
    padding: 40px 20px;
  }
  
  .empty-state-icon {
    font-size: 48px;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 12px 16px;
  }
  
  .header h1 {
    font-size: 20px;
  }
  
  .main-content {
    padding: 12px;
  }
  
  .auth-section h2 {
    font-size: 20px;
  }
  
  .toolbar {
    padding: 12px;
    gap: 8px;
  }
  
  .modal-content {
    padding: 12px;
    margin: 8px;
  }
  
  /* 更小的屏幕优化 */
  th, td {
    padding: 8px 4px;
    font-size: 12px;
  }
  
  td button {
    padding: 6px 8px;
    font-size: 10px;
  }
  
  /* 隐藏部分列在小屏幕上 */
  @media (max-width: 360px) {
    th:nth-child(3), td:nth-child(3), /* 大小列 */
    th:nth-child(4), td:nth-child(4)  /* 修改时间列 */
    {
      display: none;
    }
  }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
  button:hover {
    transform: none;
  }
  
  tr:hover td {
    background: var(--background-primary);
  }
  
  .chip:hover {
    border-color: var(--border-color);
    color: var(--text-primary);
  }
}