/* ================================================================
   消费轨迹系统 — common.css
   设计令牌、重置样式、通用组件、Tab Bar、Toast、覆盖层
   ================================================================ */

/* -----------------------------------------------------------------
   1. CSS 自定义属性（设计令牌）
   ----------------------------------------------------------------- */
:root {
  /* --- 主色调 --- */
  --color-primary: #4A90D9;
  --color-primary-light: #6BA5E7;
  --color-primary-dark: #357ABD;

  /* --- 功能色 --- */
  --color-success: #34C759;
  --color-warning: #FF9500;
  --color-danger: #FF3B30;
  --color-danger-dark: #CC0000;
  --color-info: #5AC8FA;

  /* --- 必要性颜色 --- */
  --color-need: #34C759;       /* 必需 — 绿色 */
  --color-want: #FF9500;       /* 可选 — 橙色 */
  --color-impulse: #FF3B30;    /* 冲动 — 红色 */

  /* --- 价值评定颜色 --- */
  --color-worth: #34C759;      /* 值 — 绿色 */
  --color-neutral-val: #FFCC00;/* 一般 — 黄色 */
  --color-not-worth: #FF9500;  /* 不值 — 橙色 */
  --color-regret: #FF3B30;     /* 后悔 — 红色 */

  /* --- 预算进度颜色 --- */
  --color-budget-safe: #34C759;
  --color-budget-watch: #FF9500;
  --color-budget-warn: #FF6B35;
  --color-budget-danger: #FF3B30;
  --color-budget-over: #CC0000;

  /* --- 中性色 --- */
  --color-bg: #F5F5F7;
  --color-surface: #FFFFFF;
  --color-border: #E5E5EA;
  --color-divider: #F2F2F7;
  --color-text-primary: #1C1C1E;
  --color-text-secondary: #6E6E73;
  --color-text-tertiary: #AEAEB2;
  --color-text-inverse: #FFFFFF;

  /* --- 间距 --- */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 20px;
  --space-xxl: 24px;
  --space-xxxl: 32px;

  /* --- 圆角 --- */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-round: 50%;

  /* --- 阴影 --- */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

  /* --- 字体 --- */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Menlo", "Consolas", monospace;
  --font-size-xs: 11px;
  --font-size-sm: 13px;
  --font-size-md: 15px;
  --font-size-lg: 17px;
  --font-size-xl: 20px;
  --font-size-xxl: 28px;
  --font-size-xxxl: 36px;

  /* --- 布局 --- */
  --app-max-width: 430px;
  --tab-bar-height: 56px;
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);

  /* --- 动画 --- */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.35s ease;
}

/* -----------------------------------------------------------------
   2. CSS Reset
   ----------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  color: var(--color-text-primary);
  background: #E8E8ED;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

input, button, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* -----------------------------------------------------------------
   3. App 容器
   ----------------------------------------------------------------- */
.app-container {
  max-width: var(--app-max-width);
  margin: 0 auto;
  min-height: 100vh;
  background: var(--color-bg);
  position: relative;
  display: flex;
  flex-direction: column;
}

/* -----------------------------------------------------------------
   4. View 视图切换
   ----------------------------------------------------------------- */
.main-view {
  display: none;
  flex-direction: column;
  flex: 1;
  padding-bottom: calc(var(--tab-bar-height) + var(--safe-area-bottom) + var(--space-md));
  overflow-y: auto;
}

.main-view--active {
  display: flex;
}

/* -----------------------------------------------------------------
   5. 底部 Tab Bar
   ----------------------------------------------------------------- */
.tab-bar {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--app-max-width);
  height: calc(var(--tab-bar-height) + var(--safe-area-bottom));
  padding-bottom: var(--safe-area-bottom);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: 100;
}

.tab-bar__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: var(--space-sm) 0;
  color: var(--color-text-tertiary);
  cursor: pointer;
  transition: color var(--transition-fast);
  user-select: none;
  -webkit-user-select: none;
}

.tab-bar__item:hover {
  color: var(--color-text-secondary);
}

.tab-bar__item--active {
  color: var(--color-primary);
}

.tab-bar__icon {
  font-size: 22px;
  line-height: 1;
}

.tab-bar__label {
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* -----------------------------------------------------------------
   6. Toast 提示
   ----------------------------------------------------------------- */
.toast-container {
  position: fixed;
  top: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  width: calc(100% - var(--space-xxl) * 2);
  max-width: calc(var(--app-max-width) - var(--space-xxl) * 2);
  pointer-events: none;
}

.toast {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: var(--color-text-primary);
  color: var(--color-text-inverse);
  font-size: var(--font-size-sm);
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.25s ease forwards;
  pointer-events: auto;
}

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

.toast--error {
  background: var(--color-danger);
}

.toast--warning {
  background: var(--color-warning);
}

.toast--removing {
  animation: toastOut 0.25s ease forwards;
}

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

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

/* -----------------------------------------------------------------
   7. 覆盖层（右侧滑入面板）
   ----------------------------------------------------------------- */
.page-overlay {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%) translateX(110%);
  width: 100%;
  max-width: var(--app-max-width);
  height: 100vh;
  height: 100dvh;
  background: var(--color-bg);
  z-index: 200;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transition: transform var(--transition-slow), opacity var(--transition-slow);
  pointer-events: none;
}

.page-overlay--open {
  transform: translateX(-50%) translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.page-overlay__header {
  display: flex;
  align-items: center;
  padding: var(--space-lg);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  gap: var(--space-md);
  flex-shrink: 0;
}

.page-overlay__back {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 20px;
  color: var(--color-primary);
  border: none;
  background: none;
  border-radius: var(--radius-round);
  transition: background var(--transition-fast);
}

.page-overlay__back:hover {
  background: var(--color-divider);
}

.page-overlay__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  flex: 1;
}

.page-overlay__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
}

/* -----------------------------------------------------------------
   7b. 底部弹出面板（Bottom Sheet）— 编辑记录用
   ----------------------------------------------------------------- */

/* 半透明背景遮罩 */
.bottom-sheet-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 199;
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
  -webkit-tap-highlight-color: transparent;
}

.bottom-sheet-backdrop--open {
  opacity: 1;
  pointer-events: auto;
}

/* 底部弹出面板主体 */
.bottom-sheet {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%) translateY(100%);
  width: 100%;
  max-width: var(--app-max-width);
  max-height: 80vh;
  background: var(--color-surface);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.12);
  z-index: 200;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-slow);
  padding-bottom: var(--safe-area-bottom);
}

.bottom-sheet--open {
  transform: translateX(-50%) translateY(0);
}

/* 拖拽手柄（纯视觉，无交互） */
.bottom-sheet__handle-bar {
  display: flex;
  justify-content: center;
  padding: var(--space-sm) 0 0;
  flex-shrink: 0;
}

.bottom-sheet__handle {
  width: 36px;
  height: 4px;
  border-radius: 2px;
  background: var(--color-border);
}

/* 头部栏 */
.bottom-sheet__header {
  display: flex;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  gap: var(--space-md);
  flex-shrink: 0;
  border-bottom: 1px solid var(--color-border);
}

.bottom-sheet__btn-back {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 20px;
  color: var(--color-primary);
  border: none;
  background: none;
  border-radius: var(--radius-round);
  transition: background var(--transition-fast);
}

.bottom-sheet__btn-back:hover {
  background: var(--color-divider);
}

.bottom-sheet__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  flex: 1;
}

/* 内容区（可滚动） */
.bottom-sheet__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
  -webkit-overflow-scrolling: touch;
}

/* -----------------------------------------------------------------
   8. 通用卡片
   ----------------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.card--flat {
  box-shadow: none;
  border: 1px solid var(--color-border);
}

/* -----------------------------------------------------------------
   9. 通用按钮
   ----------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  user-select: none;
  -webkit-user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
}

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

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
}

.btn--ghost:hover {
  background: var(--color-divider);
}

.btn--small {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn--block {
  width: 100%;
}

.btn--round {
  border-radius: var(--radius-round);
  width: 36px;
  height: 36px;
  padding: 0;
}

/* -----------------------------------------------------------------
   10. 通用输入框
   ----------------------------------------------------------------- */
.input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  background: var(--color-surface);
  color: var(--color-text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

.input:focus {
  border-color: var(--color-primary);
}

.input--search {
  padding-left: 36px;
  background: var(--color-divider);
  border: none;
  border-radius: var(--radius-md);
}

/* -----------------------------------------------------------------
   11. Chip 标签
   ----------------------------------------------------------------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  background: var(--color-divider);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  -webkit-user-select: none;
}

.chip--active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.chip--removable {
  padding-right: 6px;
}

.chip__remove {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-round);
  font-size: 12px;
  cursor: pointer;
  background: rgba(0, 0, 0, 0.1);
}

.chip--active .chip__remove {
  background: rgba(255, 255, 255, 0.2);
}

/* -----------------------------------------------------------------
   12. 筛选 Chip（账单页用）
   ----------------------------------------------------------------- */
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  cursor: default;
  white-space: nowrap;
}

.filter-chip__remove {
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  opacity: 0.7;
}

.filter-chip__remove:hover {
  opacity: 1;
}

/* 清除全部筛选按钮（红色虚线边框，醒目但不突兀） */
.filter-chip__clear-all {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  background: none;
  border: 1px dashed var(--color-danger);
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

.filter-chip__clear-all:active {
  background: rgba(255, 59, 48, 0.08);
}
}

/* -----------------------------------------------------------------
   13. 空状态
   ----------------------------------------------------------------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xxxl) var(--space-xl);
  color: var(--color-text-tertiary);
  text-align: center;
}

.empty-state__icon {
  font-size: 48px;
  margin-bottom: var(--space-lg);
}

.empty-state__text {
  font-size: var(--font-size-md);
  margin-bottom: var(--space-sm);
}

.empty-state__hint {
  font-size: var(--font-size-sm);
}

/* -----------------------------------------------------------------
   14. 进度条
   ----------------------------------------------------------------- */
.progress-bar {
  height: 8px;
  background: var(--color-divider);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  border-radius: 4px;
  transition: width var(--transition-slow);
}

.progress-bar__fill--safe  { background: var(--color-budget-safe); }
.progress-bar__fill--watch { background: var(--color-budget-watch); }
.progress-bar__fill--warn  { background: var(--color-budget-warn); }
.progress-bar__fill--danger{ background: var(--color-budget-danger); }
.progress-bar__fill--over  { background: var(--color-budget-over); }

/* -----------------------------------------------------------------
   15. 横向滚动容器
   ----------------------------------------------------------------- */
.scroll-x {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--space-sm);
  overflow-x: auto;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: var(--space-xs);
}

.scroll-x > * {
  flex-shrink: 0;
  white-space: nowrap;
}

.scroll-x::-webkit-scrollbar {
  display: none;
}

/* -----------------------------------------------------------------
   16. 数字键盘
   ----------------------------------------------------------------- */
.numpad {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.numpad__key {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  font-size: var(--font-size-xl);
  background: var(--color-surface);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: background var(--transition-fast);
  border: none;
  color: var(--color-text-primary);
  font-family: inherit;
}

.numpad__key:hover {
  background: var(--color-divider);
}

.numpad__key:active {
  background: var(--color-border);
}

.numpad__key--fn {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
}

.numpad__key--submit {
  grid-row: span 2;
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.numpad__key--submit:hover {
  background: var(--color-primary-dark);
}

.numpad__key--submit:active {
  background: var(--color-primary-dark);
}

/* -----------------------------------------------------------------
   17. Modal 弹窗
   ----------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.25s ease;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  width: calc(100% - var(--space-xxl) * 2);
  max-width: calc(var(--app-max-width) - var(--space-xxl) * 2);
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.25s ease;
}

.modal__header {
  padding: var(--space-lg);
  font-size: var(--font-size-lg);
  font-weight: 600;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.modal__body {
  padding: var(--space-lg);
  overflow-y: auto;
  flex: 1;
}

.modal__footer {
  padding: var(--space-lg);
  display: flex;
  gap: var(--space-md);
  border-top: 1px solid var(--color-border);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* -----------------------------------------------------------------
   18. 金额显示
   ----------------------------------------------------------------- */
.amount {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.amount--large {
  font-size: var(--font-size-xxxl);
  font-weight: 700;
}

.amount--expense {
  color: var(--color-text-primary);
}

.amount--expense::before {
  content: "-¥";
}

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

/* -----------------------------------------------------------------
   19. 响应式：桌面端居中
   ----------------------------------------------------------------- */
@media (min-width: 431px) {
  .app-container {
    border-left: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
  }

  .tab-bar {
    border-left: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
  }
}