:root {
  --md-sys-color-primary:            #333446;
  --md-sys-color-on-primary:         #FFFFFF;
  --md-sys-color-primary-container:  #B8CFCE;
  --md-sys-color-on-primary-container:#00131A;

  --md-sys-color-secondary:          #7F8CAA;
  --md-sys-color-on-secondary:       #FFFFFF;
  --md-sys-color-secondary-container:#D3D8E8;
  --md-sys-color-on-secondary-container:#10131E;

  --md-sys-color-tertiary:           #B8CFCE;
  --md-sys-color-on-tertiary:        #002021;

  --md-sys-color-surface:            #FFFFFF;
  --md-sys-color-on-surface:         #333446;
  --md-sys-color-surface-variant:    #E0E4E4;
  --md-sys-color-on-surface-variant: #505462;
  --md-sys-color-surface-container:       #EAEFEF;
  --md-sys-color-surface-container-high:  #F4F7F7;
  --md-sys-color-surface-container-highest:#FFFFFF;

  --md-sys-color-background:         #EAEFEF;
  --md-sys-color-on-background:      #333446;

  --md-sys-color-error:              #BA1A1A;
  --md-sys-color-on-error:           #FFFFFF;
  --md-sys-color-error-container:    #FFDAD6;
  --md-sys-color-on-error-container: #410002;

  --md-sys-color-success:            #4CAF50;
  --md-sys-color-on-success:         #FFFFFF;
  --md-sys-color-success-container:  #C8E6C9;
  --md-sys-color-on-success-container:#00390A;

  --md-sys-color-outline:            #8C909E;
  --md-sys-color-outline-variant:    #CCD0D8;
  --md-sys-color-shadow:             #000000;

  --primary-color:     var(--md-sys-color-primary);
  --secondary-color:   var(--md-sys-color-secondary);
  --background-color:  var(--md-sys-color-background);
  --card-background-color: var(--md-sys-color-surface-container);
  --text-color:        var(--md-sys-color-on-surface);
  --border-color:      var(--md-sys-color-outline-variant);
  --hover-color:       var(--md-sys-color-surface-container-high);
  --result-color:      var(--md-sys-color-success);
  --error-color:       var(--md-sys-color-error);
  --input-background:  var(--md-sys-color-surface-variant);
  --shadow-color:      rgba(0,0,0,.08);
  --shadow-hover-color:rgba(0,0,0,.12);
  --footer-color:      var(--md-sys-color-on-surface-variant);
  --success-text:      var(--md-sys-color-on-success);
  --error-text:        var(--md-sys-color-on-error);

  /* Material Motion 缓动函数 */
  --md-motion-easing-emphasized: cubic-bezier(0.2, 0.0, 0, 1.0);
  --md-motion-easing-emphasized-decelerate: cubic-bezier(0.05, 0.7, 0.1, 1.0);
  --md-motion-easing-emphasized-accelerate: cubic-bezier(0.3, 0.0, 0.8, 0.15);
  --md-motion-easing-standard: cubic-bezier(0.4, 0.0, 0.2, 1);
  --md-motion-easing-standard-decelerate: cubic-bezier(0, 0, 0.2, 1);
  --md-motion-easing-standard-accelerate: cubic-bezier(0.4, 0, 1, 1);

  /* Material Motion 时长 */
  --md-motion-duration-short1: 50ms;
  --md-motion-duration-short2: 100ms;
  --md-motion-duration-short3: 150ms;
  --md-motion-duration-short4: 200ms;
  --md-motion-duration-medium1: 250ms;
  --md-motion-duration-medium2: 300ms;
  --md-motion-duration-medium3: 350ms;
  --md-motion-duration-medium4: 400ms;
  --md-motion-duration-long1: 450ms;
  --md-motion-duration-long2: 500ms;
  --md-motion-duration-long3: 550ms;
  --md-motion-duration-long4: 600ms;
}

[data-theme="dark"] {
  --md-sys-color-primary:            #B8CFCE;
  --md-sys-color-on-primary:         #002021;
  --md-sys-color-primary-container:  #4A5B63;
  --md-sys-color-on-primary-container:#D8EAE9;

  --md-sys-color-secondary:          #9BA7C4;
  --md-sys-color-on-secondary:       #0F1421;
  --md-sys-color-secondary-container:#424D68;
  --md-sys-color-on-secondary-container:#DEE3F3;

  --md-sys-color-tertiary:           #7F8CAA;
  --md-sys-color-on-tertiary:        #00131E;

  --md-sys-color-surface:            #12131A;
  --md-sys-color-on-surface:         #E3E6EF;
  --md-sys-color-surface-variant:    #505462;
  --md-sys-color-on-surface-variant: #CACDD9;
  --md-sys-color-surface-container:       #1F2028;
  --md-sys-color-surface-container-high:  #292B33;
  --md-sys-color-surface-container-highest:#33353E;

  --md-sys-color-background:         #12131A;
  --md-sys-color-on-background:      #E3E6EF;

  --md-sys-color-error:              #FFB4AB;
  --md-sys-color-on-error:           #690005;
  --md-sys-color-error-container:    #93000A;
  --md-sys-color-on-error-container: #FFDAD6;

  --md-sys-color-success:            #7BDA71;
  --md-sys-color-on-success:         #00390A;
  --md-sys-color-success-container:  #005313;
  --md-sys-color-on-success-container:#97F68D;

  --md-sys-color-outline:            #9599A8;
  --md-sys-color-outline-variant:    #505462;
  --md-sys-color-shadow:             #000000;

  --primary-color:     var(--md-sys-color-primary);
  --secondary-color:   var(--md-sys-color-secondary);
  --background-color:  var(--md-sys-color-background);
  --card-background-color: var(--md-sys-color-surface-container);
  --text-color:        var(--md-sys-color-on-surface);
  --border-color:      var(--md-sys-color-outline-variant);
  --hover-color:       var(--md-sys-color-surface-container-high);
  --result-color:      var(--md-sys-color-success);
  --error-color:       var(--md-sys-color-error);
  --input-background:  var(--md-sys-color-surface-variant);
  --shadow-color:      rgba(0,0,0,.30);
  --shadow-hover-color:rgba(0,0,0,.40);
  --footer-color:      var(--md-sys-color-on-surface-variant);
  --success-text:      var(--md-sys-color-on-success);
  --error-text:        var(--md-sys-color-on-error);
}

.md-elevation--1 {
    box-shadow: 0px 1px 2px 0px rgba(0, 0, 0, 0.3), 0px 1px 3px 1px rgba(0, 0, 0, 0.15);
}

.md-elevation--2 {
    box-shadow: 0px 1px 2px 0px rgba(0, 0, 0, 0.3), 0px 2px 6px 2px rgba(0, 0, 0, 0.15);
}

.md-elevation--3 {
    box-shadow: 0px 1px 3px 0px rgba(0, 0, 0, 0.3), 0px 4px 8px 3px rgba(0, 0, 0, 0.15);
}

.md-elevation--4 {
    box-shadow: 0px 2px 3px 0px rgba(0, 0, 0, 0.3), 0px 6px 10px 4px rgba(0, 0, 0, 0.15);
}

.md-elevation--5 {
    box-shadow: 0px 4px 4px 0px rgba(0, 0, 0, 0.3), 0px 8px 12px 6px rgba(0, 0, 0, 0.15);
}

/* 重置基本样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 主题切换时的统一过渡控制 */
html.theme-transitioning,
html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
    transition: background-color var(--md-motion-duration-medium2) var(--md-motion-easing-standard),
                color var(--md-motion-duration-medium2) var(--md-motion-easing-standard),
                border-color var(--md-motion-duration-medium2) var(--md-motion-easing-standard),
                fill var(--md-motion-duration-medium2) var(--md-motion-easing-standard) !important;
}

/* 基本页面样式 */
body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--md-sys-color-background);
    color: var(--md-sys-color-on-background);
    line-height: 1.6;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
}

/* 页头样式 */
header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

h1 {
    color: var(--md-sys-color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

h1 .material-symbols-outlined {
    font-size: inherit;
}

/* 主要内容布局 */
main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

/* 计算器和结果区域的共同样式 */
.calculator, .result {
    background-color: var(--md-sys-color-surface-container);
    border-radius: 24px;
    padding: 2rem;
}

/* 结果区域特定样式 */
.result {
    position: sticky;
    top: 2rem;
    height: fit-content;
}

/* Material Design 3 悬停效果 */
.calculator:hover, .result:hover {
    background-color: var(--md-sys-color-surface-container-high);
}

/* 输入组样式 */
.input-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

/* 表单组样式 */
.form-group {
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Material Web组件样式覆盖 */
md-outlined-text-field,
md-outlined-select {
    width: 100%;
    margin-bottom: 0.5rem;
}

/* 计算按钮样式 */
.calculate-button {
    width: 100%;
    margin-top: 1rem;
    --md-filled-button-container-height: 56px;
}

/* 添加鼠标指针样式 */
input[type="text"]#expiryDate,
input[type="text"]#transactionDate {
    cursor: pointer;
}

/* 输入框和选择框焦点样式 */
input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.2);
}

/* 更新时间样式 */
.update-time {
    font-size: 0.75rem;
    color: var(--footer-color);
    position: absolute;
    bottom: -1rem;
    left: 0;
    transition: color var(--md-motion-duration-medium2) var(--md-motion-easing-standard);
}

/* 按钮样式 */
button {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: background-color var(--md-motion-duration-short4) var(--md-motion-easing-standard),
                transform var(--md-motion-duration-short4) var(--md-motion-easing-emphasized);
}

button:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(108, 92, 231, 0.4);
}

button i {
    margin-right: 0.5rem;
}

/* 结果区域标题样式 */
.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.result-header h2 {
    color: var(--md-sys-color-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.result-header h2 .material-symbols-outlined {
    font-size: inherit;
}

/* 结果区域按钮组 */
.result-header-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.result-header-actions md-icon-button {
    --md-icon-button-state-layer-shape: 50%;
    transition: transform var(--md-motion-duration-short4) var(--md-motion-easing-standard);
}

.result-header-actions md-icon-button:hover {
    transform: scale(1.1);
}

.result-header-actions md-icon-button:active {
    transform: scale(0.95);
}

/* 结果网格样式 */
.result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* 结果项样式 - Material Design Cards */
.result-item {
    border-radius: 12px;
    transition: transform var(--md-motion-duration-short4) var(--md-motion-easing-standard);
    --md-card-container-color: var(--md-sys-color-surface-container-highest);
    opacity: 0;
    animation: cardFadeIn var(--md-motion-duration-medium2) var(--md-motion-easing-emphasized-decelerate) forwards;
}

/* 结果卡片交错动画 */
.result-item:nth-child(1) { animation-delay: 0ms; }
.result-item:nth-child(2) { animation-delay: 50ms; }
.result-item:nth-child(3) { animation-delay: 100ms; }
.result-item:nth-child(4) { animation-delay: 150ms; }
.result-item:nth-child(5) { animation-delay: 200ms; }
.result-item:nth-child(6) { animation-delay: 250ms; }

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-item:hover {
    --md-card-container-color: var(--md-sys-color-surface-container-high);
}

.result-content {
    padding: 1rem;
}

/* 结果标签样式 */
.result-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.result-label .material-symbols-outlined {
    font-size: 1.125rem;
    color: var(--md-sys-color-primary);
    width: 1.125rem;
    text-align: center;
}

/* 结果值样式 */
.result-value {
    display: block;
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
}

/* 高亮结果项样式 */
.highlight {
    --md-card-container-color: var(--md-sys-color-primary-container);
}

.highlight .result-label {
    color: var(--md-sys-color-on-primary-container);
}

.highlight .result-label .material-symbols-outlined {
    color: var(--md-sys-color-on-primary-container);
}

.highlight .result-value {
    color: var(--md-sys-color-on-primary-container);
    font-weight: 600;
}

/* 页脚样式 */
footer {
    text-align: center;
    margin-top: 2rem;
}

.footer-card {
    --md-card-container-color: var(--md-sys-color-surface-container);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.project-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

/* 链接样式 */
.project-links a {
    color: var(--md-sys-color-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color var(--md-motion-duration-short4) var(--md-motion-easing-standard);
}

.project-links a:hover {
    color: var(--md-sys-color-secondary);
}

.project-links a .material-symbols-outlined {
    font-size: 1.125rem;
    width: 1.125rem;
    text-align: center;
}

.version-badge {
    --md-chip-label-text-color: var(--md-sys-color-on-surface-variant);
}

/* Toast 通知样式 */
.toast-container {
    position: fixed;
    bottom: 16px;
    right: 16px;
    display: flex;
    flex-direction: column-reverse;
    gap: 12px;
    z-index: 1100;
    pointer-events: none;
}

.toast {
    min-width: fit-content;
    max-width: 480px;
    padding: 1rem 1.2rem;
    border-radius: 0.75rem;
    background: rgba(28, 27, 31, 0.92);
    color: white;
    box-shadow: none;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    opacity: 0;
    transform: translateY(12px) scale(0.96);
    transition: opacity var(--md-motion-duration-medium2) var(--md-motion-easing-emphasized),
                transform var(--md-motion-duration-medium2) var(--md-motion-easing-emphasized);
    pointer-events: auto;
    line-height: 1.5;
    font-size: 0.95rem;
    width: fit-content;
}

.toast-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    opacity: 0.9;
}

.toast-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.toast-hide {
    opacity: 0;
    transform: translateY(4px) scale(0.96);
}

.toast-message {
    flex: 1;
    white-space: pre-wrap;
    word-break: break-word;
}

.toast.toast-success {
    background: var(--md-sys-color-success-container);
    color: var(--md-sys-color-on-success-container);
}

.toast.toast-error {
    background: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}

.toast.toast-warning {
    background: #fef7e0;
    color: #7c2d12;
}

.toast.toast-info {
    background: var(--card-background-color);
    color: var(--md-sys-color-on-surface);
}

[data-theme="dark"] .toast {
    background: rgba(244, 245, 255, 0.08);
    color: var(--md-sys-color-on-surface);
    box-shadow: none;
}

[data-theme="dark"] .toast.toast-warning {
    background: #451a03;
    color: #fed7aa;
}


/* Flatpickr 暗黑模式 */
[data-theme="dark"] .flatpickr-calendar {
    background: var(--card-background-color);
    color: var(--text-color);
    box-shadow: 0 3px 13px var(--shadow-color);
    border-color: var(--border-color);
}

[data-theme="dark"] .flatpickr-months {
    background-color: var(--card-background-color);
}

[data-theme="dark"] .flatpickr-month {
    color: var(--text-color);
    fill: var(--text-color);
}

[data-theme="dark"] .flatpickr-weekday {
    color: var(--text-color);
}

[data-theme="dark"] .flatpickr-day {
    color: var(--text-color);
}

[data-theme="dark"] .flatpickr-day.selected {
    background-color: var(--primary-color);
    color: white;
}

[data-theme="dark"] .flatpickr-day:hover {
    background-color: var(--hover-color);
}

[data-theme="dark"] .flatpickr-day.prevMonthDay, 
[data-theme="dark"] .flatpickr-day.nextMonthDay {
    color: var(--footer-color);
}

[data-theme="dark"] .flatpickr-current-month .flatpickr-monthDropdown-months {
    color: var(--text-color);
    background-color: var(--card-background-color);
}

/* Flatpickr 年份选择器箭头按钮暗色模式样式 */
[data-theme="dark"] .flatpickr-prev-month,
[data-theme="dark"] .flatpickr-next-month {
    color: var(--text-color) !important;
    fill: var(--text-color) !important;
}

[data-theme="dark"] .flatpickr-prev-month:hover,
[data-theme="dark"] .flatpickr-next-month:hover {
    color: var(--primary-color) !important;
    fill: var(--primary-color) !important;
}

/* 年份选择器的上下箭头 - 正确的类名和属性 */
[data-theme="dark"] .numInputWrapper span.arrowUp:after {
    border-bottom-color: var(--text-color) !important;
}

[data-theme="dark"] .numInputWrapper span.arrowDown:after {
    border-top-color: var(--text-color) !important;
}

[data-theme="dark"] .numInputWrapper span.arrowUp:hover:after {
    border-bottom-color: var(--primary-color) !important;
}

[data-theme="dark"] .numInputWrapper span.arrowDown:hover:after {
    border-top-color: var(--primary-color) !important;
}

/* 年份选择器箭头按钮背景 */
[data-theme="dark"] .numInputWrapper span {
    border-color: var(--border-color) !important;
    background-color: var(--card-background-color) !important;
}

[data-theme="dark"] .numInputWrapper span:hover {
    background-color: var(--hover-color) !important;
}

[data-theme="dark"] .numInputWrapper:hover {
    background-color: var(--hover-color) !important;
}

/* 确保在Flatpickr日历容器内的年份选择器箭头也被正确样式化 */
[data-theme="dark"] .flatpickr-calendar .numInputWrapper span.arrowUp:after {
    border-bottom-color: var(--text-color) !important;
}

[data-theme="dark"] .flatpickr-calendar .numInputWrapper span.arrowDown:after {
    border-top-color: var(--text-color) !important;
}

[data-theme="dark"] .flatpickr-calendar .numInputWrapper span.arrowUp:hover:after {
    border-bottom-color: var(--primary-color) !important;
}

[data-theme="dark"] .flatpickr-calendar .numInputWrapper span.arrowDown:hover:after {
    border-top-color: var(--primary-color) !important;
}

[data-theme="dark"] .flatpickr-calendar .numInputWrapper span {
    border-color: var(--border-color) !important;
    background-color: var(--card-background-color) !important;
}

[data-theme="dark"] .flatpickr-calendar .numInputWrapper span:hover {
    background-color: var(--hover-color) !important;
}

/* 年份输入框样式 */
[data-theme="dark"] .flatpickr-current-month .cur-year {
    color: var(--text-color);
    background-color: var(--card-background-color);
}

[data-theme="dark"] .flatpickr-current-month .cur-year:hover {
    background-color: var(--hover-color);
}

/* 月份选择器样式 */
[data-theme="dark"] .flatpickr-current-month .flatpickr-monthDropdown-months:hover {
    background-color: var(--hover-color);
}

/* ==================== Material Design 3 响应式设计 ==================== */
/* Material Design 3 Breakpoints:
   - Compact (手机): 0-599px
   - Medium (平板): 600-839px
   - Expanded (桌面): 840px+
*/

/* Compact + Medium (手机和平板) */
@media (max-width: 839px) {
    /* 容器和布局 */
    .container {
        padding: 1rem;
    }

    main {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .result {
        position: static;
        margin-top: 1.5rem;
    }

    /* 输入组样式 */
    .input-group {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    /* 计算器和结果区域 */
    .calculator, .result {
        padding: 1.5rem;
        border-radius: 16px;
    }

    /* 标题 */
    h1 {
        font-size: 1.8rem;
    }

    .result h2 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    /* 主题和设置按钮 */
    .theme-toggle {
        top: 1rem;
        right: 1rem;
    }

    .settings-toggle {
        top: 1rem;
        right: 4rem;
    }

    #settingsToggle {
        width: 36px;
        height: 36px;
    }

    /* 表单元素 */
    input, select {
        padding: 1rem;
        font-size: 16px;
        height: 48px;
    }

    button {
        padding: 1rem;
        height: 48px;
        margin-top: 0.5rem;
    }

    /* 结果网格 */
    .result-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .result-item {
        padding: 1rem;
    }

    .result-label {
        font-size: 0.85rem;
    }

    .result-value {
        font-size: 1.1rem;
    }

    .highlight .result-value {
        font-size: 1.3rem;
    }

    /* 页脚 */
    .footer-card {
        flex-direction: column;
        text-align: center;
    }

    .project-links {
        justify-content: center;
    }

    /* 触摸优化 */
    button,
    select,
    input[type="text"],
    .result-item {
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }

    button:active,
    .result-item:active {
        transform: scale(0.98);
    }

    /* 侧边栏 */
    .settings-sidebar {
        width: 100%;
        right: -100%;
    }

    /* Toast 移动端样式 */
    .toast-container {
        bottom: 16px;
        left: 16px;
        right: 16px;
    }

    .toast {
        min-width: auto;
        width: 100%;
    }

    .sidebar-header {
        padding: 1rem;
    }

    .sidebar-content {
        padding: 0;
    }

    .sidebar-actions {
        padding: 1rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .sidebar-actions md-filled-button,
    .sidebar-actions md-text-button {
        width: 100%;
    }
}

/* Compact only (仅手机) */
@media (max-width: 599px) {
    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    .calculator, .result {
        padding: 1rem;
    }

    input, select, button {
        font-size: 14px;
    }
}

/* Medium only (仅平板) - 优化两列布局 */
@media (min-width: 600px) and (max-width: 839px) {
    /* 结果网格在平板上使用两列 */
    .result-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }

    /* 页脚在平板上保持水平布局 */
    .footer-card {
        flex-direction: row;
        padding: 1.5rem;
    }

    /* 侧边栏在平板上使用固定宽度 */
    .settings-sidebar {
        width: 400px;
        right: -400px;
    }
}

/* 加入鼠标选中和点击效果 */
.highlight .result-value {
    color: var(--md-sys-color-on-primary-container);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}


.copy-icon {
    color: var(--md-sys-color-on-primary-container);
    font-size: 1rem;
    cursor: pointer;
    transition: transform var(--md-motion-duration-short4) var(--md-motion-easing-emphasized),
                background-color var(--md-motion-duration-short4) var(--md-motion-easing-standard),
                opacity var(--md-motion-duration-short4) var(--md-motion-easing-standard);
    padding: 0.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    opacity: 0.8;
}

.copy-icon:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
    opacity: 1;
}

.highlight .result-value:active,
.copy-icon:active {
    transform: scale(0.95);
}

/* 设置侧边栏样式 */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--md-motion-duration-medium2) var(--md-motion-easing-emphasized),
                visibility var(--md-motion-duration-medium2) var(--md-motion-easing-emphasized);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

.settings-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100%;
    z-index: 1000;
    transition: right var(--md-motion-duration-medium4) var(--md-motion-easing-emphasized-decelerate);
}

.settings-sidebar.active {
    right: 0;
}

.sidebar-card {
    height: 100%;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    background-color: var(--md-sys-color-surface-container-high);
    --md-elevated-card-container-color: var(--md-sys-color-surface-container-high);
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
    flex-shrink: 0;
}

.sidebar-header h2 {
    margin: 0;
    color: var(--md-sys-color-on-surface);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-header h2 .material-symbols-outlined {
    color: var(--md-sys-color-primary);
}

.sidebar-content {
    flex: 1;
    padding: 0;
    overflow-y: auto;
}

.sidebar-actions {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--md-sys-color-outline-variant);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    flex-shrink: 0;
}

/* 设置表单样式 */
.sidebar-content .form-group {
    margin-bottom: 1.5rem;
}

/* ==================== Android Settings 风格样式 ==================== */

/* 设置分组 */
.settings-section {
    padding: 0;
    margin-bottom: 0;
}

.settings-section:last-child {
    margin-bottom: 0;
}

/* 分组标题 */
.settings-section-title {
    padding: 1.5rem 1.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--md-sys-color-primary);
    letter-spacing: 0.1px;
    text-transform: uppercase;
}

/* 设置项 */
.settings-item {
    display: flex;
    align-items: flex-start;
    padding: 1rem 1.5rem;
    gap: 1rem;
    min-height: 64px;
    transition: background-color var(--md-motion-duration-short4) var(--md-motion-easing-standard);
    cursor: default;
}

.settings-item:hover {
    background-color: var(--md-sys-color-surface-container-highest);
}

/* 设置项图标 */
.settings-item-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 0.25rem;
}

.settings-item-icon .material-symbols-outlined {
    font-size: 24px;
    color: var(--md-sys-color-on-surface-variant);
}

/* 设置项内容区域 */
.settings-item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 0;
}

/* 设置项文本区域 */
.settings-item-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.settings-item-label {
    font-size: 1rem;
    font-weight: 400;
    color: var(--md-sys-color-on-surface);
    line-height: 1.5;
}

.settings-item-description {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.43;
}

/* 设置项控件区域 */
.settings-item-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.settings-item-control.full-width {
    width: 100%;
}

.settings-item-control.full-width md-outlined-text-field {
    width: 100%;
}

.settings-item-control md-outlined-select {
    min-width: 150px;
}

/* 水平单选按钮组 */
.radio-group-horizontal {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface);
    transition: color var(--md-motion-duration-short4) var(--md-motion-easing-standard);
}

.radio-option:hover {
    color: var(--md-sys-color-primary);
}

.radio-option span {
    user-select: none;
}

/* Material Divider 样式 */
md-divider {
    margin: 0.5rem 0;
    --md-divider-color: var(--md-sys-color-outline-variant);
}

/* 响应式调整 */
@media (max-width: 839px) {
    .settings-section-title {
        padding: 1rem 1rem 0.5rem;
    }

    .settings-item {
        padding: 0.75rem 1rem;
        min-height: 56px;
    }

    .settings-item-control md-outlined-select {
        min-width: 120px;
        font-size: 0.875rem;
    }

    .radio-group-horizontal {
        gap: 1rem;
    }
}

.radio-group-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: 1rem;
    font-weight: 500;
}

.radio-group-label .material-symbols-outlined {
    font-size: 1.125rem;
    color: var(--md-sys-color-primary);
}

.radio-group {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    margin-bottom: 0.5rem;
}

.radio-label {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface);
    margin-left: 0.5rem;
    cursor: pointer;
}

.help-text {
    font-size: 0.75rem;
    color: var(--md-sys-color-on-surface-variant);
    margin-top: 0.5rem;
}


/* 输入框带切换按钮 */
.input-with-toggle {
    position: relative;
    display: flex;
}

.input-with-toggle input {
    flex: 1;
    padding-right: 40px;
}

.toggle-password {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    width: 40px;
    background: transparent;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
    box-shadow: none;
}

.toggle-password:hover {
    color: var(--primary-color);
    background: transparent;
    transform: none;
    box-shadow: none;
}

/* 帮助文本样式 */
.help-text {
    font-size: 0.75rem;
    color: var(--footer-color);
    margin-top: 0.5rem;
}

/* 单选按钮组样式 */
.radio-group {
    display: flex;
    gap: 1.5rem;
    margin: 0.5rem 0;
}

.radio-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: normal;
    margin-bottom: 0;
}

.radio-label input[type="radio"] {
    width: auto;
    margin: 0 0.5rem 0 0;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 18px;
    height: 18px;
    position: relative;
    transition: border-color var(--md-motion-duration-short4) var(--md-motion-easing-standard),
                background-color var(--md-motion-duration-short4) var(--md-motion-easing-standard);
}

.radio-label input[type="radio"]:checked {
    border-color: var(--primary-color);
    background-color: var(--primary-color);
    box-shadow: inset 0 0 0 4px var(--card-background-color);
}

.radio-label input[type="radio"]:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.2), inset 0 0 0 4px var(--card-background-color);
}

.radio-label span {
    font-size: 0.95rem;
}

/* 按钮样式 */
.primary-btn, .secondary-btn {
    padding: 1rem 1.5rem;
    border-radius: 12px;
    font-weight: 500;
    transition: all 0.3s ease;
    width: auto;
}

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

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

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

.secondary-btn:hover {
    background-color: var(--hover-color);
    border-color: var(--text-color);
}


/* Material Design 3 高价值结果动画 */
@keyframes high-value-glow {
    0% {
        transform: scale(1);
        filter: brightness(1);
    }
    50% {
        transform: scale(1.05);
        filter: brightness(1.2);
    }
    100% {
        transform: scale(1);
        filter: brightness(1);
    }
}

.high-value-result {
    animation: high-value-glow 2s ease-in-out infinite;
    color: var(--md-sys-color-primary) !important;
    font-weight: 700 !important;
    will-change: transform, filter;
}

/* Material Web 组件自定义样式 */
md-outlined-text-field {
    --md-outlined-text-field-container-shape: 12px;
    --md-outlined-text-field-label-text-color: var(--md-sys-color-on-surface-variant);
    --md-outlined-text-field-input-text-color: var(--md-sys-color-on-surface);
}

md-outlined-select {
    --md-outlined-select-text-field-container-shape: 12px;
    --md-outlined-select-text-field-label-text-color: var(--md-sys-color-on-surface-variant);
}

md-filled-button {
    --md-filled-button-container-shape: 12px;
}

md-icon-button {
    --md-icon-button-state-layer-shape: 50%;
}

md-card {
    --md-card-container-shape: 12px;
}


/* Material Symbols 图标在 Material Web 组件中的样式 */
md-outlined-text-field .material-symbols-outlined[slot="leading-icon"],
md-outlined-select .material-symbols-outlined[slot="leading-icon"] {
    color: var(--md-sys-color-on-surface-variant);
    font-size: 1.25rem;
    width: 1.25rem;
    text-align: center;
}

md-filled-button .material-symbols-outlined[slot="icon"],
md-text-button .material-symbols-outlined[slot="icon"] {
    font-size: 1.125rem;
    width: 1.125rem;
    text-align: center;
}

md-icon-button .material-symbols-outlined {
    font-size: 1.25rem;
    width: 1.25rem;
    text-align: center;
    color: var(--md-sys-color-on-surface-variant);
}

[data-theme="dark"] md-outlined-text-field {
    --md-outlined-text-field-outline-color: var(--md-sys-color-outline);
    --md-outlined-text-field-label-text-color: var(--md-sys-color-on-surface-variant);
    --md-outlined-text-field-input-text-color: var(--md-sys-color-on-surface);
}

[data-theme="dark"] md-outlined-select {
    --md-outlined-select-text-field-outline-color: var(--md-sys-color-outline);
    --md-outlined-select-text-field-label-text-color: var(--md-sys-color-on-surface-variant);
}

[data-theme="dark"] md-filled-button {
    --md-filled-button-container-color: var(--md-sys-color-primary);
    --md-filled-button-label-text-color: var(--md-sys-color-on-primary);
}

[data-theme="dark"] md-icon-button .material-symbols-outlined {
    color: var(--md-sys-color-on-surface-variant);
}

[data-theme="dark"] md-card {
    --md-card-container-color: var(--md-sys-color-surface-container);
}

/* 主题切换和设置按钮样式 */
.theme-toggle, .settings-toggle {
    position: absolute;
    z-index: 100;
}

.theme-toggle {
    top: 1.5rem;
    right: 1.5rem;
}

.settings-toggle {
    top: 1.5rem;
    right: 4.5rem;
}

body.is-loading {
    opacity: 0;
    visibility: hidden;
    transition: none;
    animation: none;
}

body {
    transition: opacity var(--md-motion-duration-short4) var(--md-motion-easing-standard);
}

/* ==================== 价格悬停浮层样式 ==================== */

/* 未计算时的模糊效果 */
.result-value-blurred {
    filter: blur(4px);
    user-select: none;
    pointer-events: none;
}

/* Material Design 3 数字徽章 */
.price-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    margin-left: 0.5rem;
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
}

/* 暗色主题徽章 */
[data-theme="dark"] .price-badge {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

/* 可展开的结果项 */
.result-item-expandable {
    cursor: pointer;
    overflow: visible !important;
    position: relative;
    z-index: 1;
}

.result-item-expandable:hover {
    z-index: 999;
}

.result-item-expandable .result-content {
    overflow: visible !important;
}

/* 价格值容器 */
.result-value-container {
    position: relative;
    z-index: 1;
}

/* 价格详细信息 - 浮层样式 */
.result-value-detail {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: #FFFFFF;
    border: 1px solid #CCD0D8;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--md-motion-duration-medium2) var(--md-motion-easing-emphasized-decelerate),
                visibility var(--md-motion-duration-medium2) var(--md-motion-easing-emphasized-decelerate),
                transform var(--md-motion-duration-medium2) var(--md-motion-easing-emphasized-decelerate);
    z-index: 1000;
    pointer-events: none;
    isolation: isolate;
}

/* 悬停时显示浮层 - 只有计算后才显示 */
.result-item-expandable.calculated:hover .result-value-detail {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

/* 详细价格项样式 */
.price-detail-item {
    padding: 0.5rem 0.75rem;
    margin: 0.25rem 0;
    border-radius: 8px;
    background: #F4F7F7;
    font-size: 0.9rem;
    color: #505462;
    transition: background-color var(--md-motion-duration-short4) var(--md-motion-easing-standard);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 当前选择的周期高亮 */
.price-detail-item.current-cycle {
    background: #B8CFCE;
    color: #00131A;
    font-weight: 600;
}

/* 价格标签 */
.price-detail-label {
    font-size: 0.875rem;
}

/* 价格值 */
.price-detail-value {
    font-weight: 500;
}

/* 高亮项的价格值 */
.price-detail-item.current-cycle .price-detail-value {
    font-weight: 600;
}

/* 暗色主题适配 */
[data-theme="dark"] .result-value-detail {
    background: #1F2028;
    border-color: #505462;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .price-detail-item {
    background: #292B33;
    color: #CACDD9;
}

[data-theme="dark"] .price-detail-item.current-cycle {
    background: #4A5B63;
    color: #D8EAE9;
}

/* 响应式调整 */
@media (max-width: 839px) {
    .result-value-detail {
        margin-top: 0.25rem;
        padding: 0.5rem;
    }

    .price-detail-item {
        padding: 0.4rem 0.6rem;
        font-size: 0.85rem;
    }
}