/* ==========================================================================
   BingBank - 移动端样式表 (Telegram Mini App)
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS 变量 - Telegram 主题适配
   -------------------------------------------------------------------------- */
:root {
  /* Telegram 主题颜色 (默认值,会被 JS 覆盖) */
  --tg-theme-bg-color: #ffffff;
  --tg-theme-text-color: #000000;
  --tg-theme-hint-color: #707579;
  --tg-theme-link-color: #3390ec;
  --tg-theme-button-color: #3390ec;
  --tg-theme-button-text-color: #ffffff;
  --tg-theme-secondary-bg-color: #f4f4f5;
  
  /* 自定义颜色 */
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --info-color: #3b82f6;
  
  /* 渐变色 */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
}

/* --------------------------------------------------------------------------
   基础样式重置
   -------------------------------------------------------------------------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--tg-theme-text-color);
  background: var(--tg-theme-bg-color);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --------------------------------------------------------------------------
   布局容器
   -------------------------------------------------------------------------- */
#app {
  min-height: 100vh;
  padding-bottom: 60px; /* 底部导航栏高度 */
  background: var(--tg-theme-bg-color);
}

.page-container {
  padding: var(--spacing-md);
  padding-bottom: 80px;
}

/* --------------------------------------------------------------------------
   顶部栏 (Header)
   -------------------------------------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 56px;
  padding: 0 var(--spacing-md);
  background: var(--tg-theme-bg-color);
  border-bottom: 1px solid var(--tg-theme-secondary-bg-color);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header-back {
  width: 24px;
  height: 24px;
  cursor: pointer;
  transition: transform 0.2s;
}

.header-back:active {
  transform: scale(0.9);
}

.header-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--tg-theme-text-color);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header-icon {
  position: relative;
  width: 24px;
  height: 24px;
  cursor: pointer;
  transition: transform 0.2s;
}

.header-icon:active {
  transform: scale(0.9);
}

.header-icon .badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--danger-color);
  color: white;
  font-size: 10px;
  font-weight: 600;
  border-radius: 8px;
}

/* --------------------------------------------------------------------------
   底部导航栏 (Bottom Tab Bar)
   -------------------------------------------------------------------------- */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 60px;
  background: var(--tg-theme-bg-color);
  border-top: 1px solid var(--tg-theme-secondary-bg-color);
  padding-bottom: env(safe-area-inset-bottom);
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 8px 0;
  color: var(--tg-theme-hint-color);
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
}

.nav-item.active {
  color: var(--tg-theme-button-color);
}

.nav-item:active {
  transform: scale(0.95);
}

.nav-icon {
  font-size: 24px;
}

.nav-label {
  font-size: 12px;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   余额卡片 (Balance Card)
   -------------------------------------------------------------------------- */
.balance-card {
  margin: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--gradient-primary);
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
  color: white;
}

.balance-label {
  font-size: 14px;
  opacity: 0.9;
  margin-bottom: var(--spacing-sm);
}

.balance-amount {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.5px;
}

.balance-actions {
  display: flex;
  gap: 12px;
}

.balance-btn {
  flex: 1;
  padding: 10px;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  color: white;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: all 0.3s;
  cursor: pointer;
}

.balance-btn:active {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0.98);
}

/* --------------------------------------------------------------------------
   快捷操作 (Quick Actions)
   -------------------------------------------------------------------------- */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 0 var(--spacing-md) var(--spacing-md);
}

.quick-action-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-sm);
  background: var(--tg-theme-secondary-bg-color);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.quick-action-item:active {
  background: var(--tg-theme-bg-color);
  transform: scale(0.95);
}

.quick-action-icon {
  font-size: 24px;
}

.quick-action-label {
  font-size: 12px;
  color: var(--tg-theme-text-color);
  text-align: center;
}

/* --------------------------------------------------------------------------
   区块标题 (Section Header)
   -------------------------------------------------------------------------- */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--spacing-md);
  margin-bottom: 12px;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--tg-theme-text-color);
}

.section-more {
  font-size: 14px;
  color: var(--tg-theme-link-color);
  cursor: pointer;
  transition: opacity 0.2s;
}

.section-more:active {
  opacity: 0.7;
}

/* --------------------------------------------------------------------------
   卡片列表 (Card List)
   -------------------------------------------------------------------------- */
.card-list {
  padding: 0 var(--spacing-md) var(--spacing-md);
}

.card-item {
  margin-bottom: 12px;
  padding: var(--spacing-md);
  background: var(--tg-theme-secondary-bg-color);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.card-item:active {
  transform: scale(0.98);
  box-shadow: var(--shadow-md);
}

.card-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.card-item-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 16px;
  font-weight: 600;
  color: var(--tg-theme-text-color);
}

.card-item-status {
  font-size: 14px;
  color: var(--success-color);
}

.card-item-details {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--tg-theme-hint-color);
}

/* --------------------------------------------------------------------------
   交易列表 (Transaction List)
   -------------------------------------------------------------------------- */
.transaction-list {
  padding: 0 var(--spacing-md) var(--spacing-md);
}

.transaction-date-group {
  margin-bottom: var(--spacing-lg);
}

.transaction-date-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--tg-theme-hint-color);
  margin-bottom: var(--spacing-sm);
}

.transaction-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--tg-theme-secondary-bg-color);
  cursor: pointer;
  transition: opacity 0.2s;
}

.transaction-item:last-child {
  border-bottom: none;
}

.transaction-item:active {
  opacity: 0.7;
}

.transaction-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.transaction-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--tg-theme-secondary-bg-color);
  border-radius: 50%;
  font-size: 20px;
}

.transaction-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.transaction-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--tg-theme-text-color);
}

.transaction-subtitle {
  font-size: 12px;
  color: var(--tg-theme-hint-color);
}

.transaction-right {
  text-align: right;
}

.transaction-amount {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.transaction-amount.positive {
  color: var(--success-color);
}

.transaction-amount.negative {
  color: var(--danger-color);
}

.transaction-time {
  font-size: 12px;
  color: var(--tg-theme-hint-color);
}

/* --------------------------------------------------------------------------
   按钮组件 (Button)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  text-align: center;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

.btn-secondary {
  background: transparent;
  color: var(--tg-theme-button-color);
  border: 1px solid var(--tg-theme-button-color);
}

.btn-danger {
  background: var(--danger-color);
  color: white;
}

.btn-success {
  background: var(--success-color);
  color: white;
}

.btn-block {
  width: 100%;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 18px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

/* --------------------------------------------------------------------------
   表单组件 (Form)
   -------------------------------------------------------------------------- */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--tg-theme-text-color);
}

.form-label.required::after {
  content: ' *';
  color: var(--danger-color);
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--tg-theme-secondary-bg-color);
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 16px;
  color: var(--tg-theme-text-color);
  transition: all 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--tg-theme-button-color);
  box-shadow: 0 0 0 3px rgba(51, 144, 236, 0.1);
}

.form-input.error {
  border-color: var(--danger-color);
}

.form-error {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--danger-color);
}

.form-hint {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--tg-theme-hint-color);
}

/* --------------------------------------------------------------------------
   筛选器 (Filter Tabs)
   -------------------------------------------------------------------------- */
.filter-tabs {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.filter-tabs::-webkit-scrollbar {
  display: none;
}

.filter-tab {
  flex-shrink: 0;
  padding: 8px 16px;
  background: var(--tg-theme-secondary-bg-color);
  color: var(--tg-theme-text-color);
  font-size: 14px;
  font-weight: 500;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-tab.active {
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

.filter-tab:active {
  transform: scale(0.95);
}

/* --------------------------------------------------------------------------
   加载动画 (Loading)
   -------------------------------------------------------------------------- */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--tg-theme-bg-color);
  border-radius: 12px;
}

.loading-spinner-lg {
  width: 40px;
  height: 40px;
  border: 3px solid var(--tg-theme-secondary-bg-color);
  border-top-color: var(--tg-theme-button-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-text {
  font-size: 14px;
  color: var(--tg-theme-hint-color);
}

/* --------------------------------------------------------------------------
   模态框 (Modal)
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: var(--spacing-md);
}

.modal-container {
  width: 100%;
  max-width: 400px;
  background: var(--tg-theme-bg-color);
  border-radius: 16px;
  overflow: hidden;
  animation: modalSlideUp 0.3s ease-out;
}

@keyframes modalSlideUp {
  from {
    transform: translateY(100px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--tg-theme-secondary-bg-color);
}

.modal-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--tg-theme-text-color);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--tg-theme-hint-color);
  cursor: pointer;
  transition: opacity 0.2s;
}

.modal-close:active {
  opacity: 0.5;
}

.modal-body {
  padding: var(--spacing-md);
  max-height: 60vh;
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border-top: 1px solid var(--tg-theme-secondary-bg-color);
}

/* --------------------------------------------------------------------------
   抽屉组件 (Drawer)
   -------------------------------------------------------------------------- */
.drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
}

.drawer-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
}

.drawer-container {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--tg-theme-bg-color);
  border-radius: 16px 16px 0 0;
  transform: translateY(100%);
  transition: transform 0.3s ease-out;
}

.drawer-handle {
  width: 36px;
  height: 4px;
  margin: 12px auto;
  background: var(--tg-theme-secondary-bg-color);
  border-radius: 2px;
}

.drawer-content {
  padding: 0 var(--spacing-md) var(--spacing-md);
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

/* --------------------------------------------------------------------------
   卡片3D展示
   -------------------------------------------------------------------------- */
.card-3d {
  perspective: 1000px;
  width: 100%;
  height: 200px;
  margin: var(--spacing-md);
  cursor: pointer;
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.card-3d.flipped .card-inner {
  transform: rotateY(180deg);
}

.card-front,
.card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 16px;
  padding: var(--spacing-lg);
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.card-back {
  transform: rotateY(180deg);
  background: var(--gradient-secondary);
}

.card-logo {
  font-size: 24px;
  margin-bottom: var(--spacing-md);
}

.card-number {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 2px;
  margin: var(--spacing-lg) 0;
}

.card-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.card-holder,
.card-expiry {
  font-size: 12px;
  opacity: 0.8;
}

.card-holder-name,
.card-expiry-date {
  font-size: 14px;
  font-weight: 600;
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   空状态 (Empty State)
   -------------------------------------------------------------------------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  text-align: center;
}

.empty-icon {
  font-size: 64px;
  opacity: 0.3;
  margin-bottom: var(--spacing-md);
}

.empty-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--tg-theme-text-color);
  margin-bottom: var(--spacing-sm);
}

.empty-description {
  font-size: 14px;
  color: var(--tg-theme-hint-color);
  margin-bottom: var(--spacing-md);
}

/* --------------------------------------------------------------------------
   响应式布局 - 平板 (768px ~ 1024px)
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  .page-container {
    max-width: 720px;
    margin: 0 auto;
  }
  
  .quick-actions {
    grid-template-columns: repeat(6, 1fr);
  }
  
  .card-list,
  .transaction-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
}

/* --------------------------------------------------------------------------
   响应式布局 - 桌面 (>1024px)
   -------------------------------------------------------------------------- */
@media (min-width: 1024px) {
  #app {
    padding-bottom: 0;
  }
  
  .page-container {
    max-width: 1200px;
  }
  
  .bottom-nav {
    display: none;
  }
  
  .quick-actions {
    grid-template-columns: repeat(8, 1fr);
  }
  
  .card-list,
  .transaction-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --------------------------------------------------------------------------
   工具类 (Utility Classes)
   -------------------------------------------------------------------------- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }

.hidden { display: none !important; }
.visible { display: block !important; }