/**
 * WeekRail - 现代化 Web 样式
 * 优化：更好的视觉设计、响应式、浏览器兼容性
 */

/* ==================== CSS Variables ==================== */
:root {
    /* 品牌主色 */
    --brand-bear-brown: #C58A56;
    --brand-outline: #5A3E28;
    --brand-orange: #F36A38;
    --brand-pink: #F2A4A0;
    
    /* 主色系 */
    --primary-color: #FF7A45;
    --primary-hover: #FF9D78;
    --primary-light: #FFE3D3;
    --primary-disabled: #FFD9C7;
    
    /* 辅助色 */
    --secondary-blue: #5A90FF;
    --secondary-green: #6CD9A3;
    --secondary-purple: #C8B6FF;
    
    /* 背景色 */
    --bg-primary: #FFFFFF;
    --bg-secondary: #FFF9F3;
    --bg-tertiary: #F4EFEA;
    
    /* 文字色 */
    --text-primary: #2A2A2A;
    --text-secondary: #5F5F5F;
    --text-tertiary: #9A9A9A;
    
    /* 边框色 */
    --border-color: #E8E2DC;
    --border-light: #F4EFEA;
    
    /* 语义色 */
    --success-color: #6CD9A3;
    --success-light: #d1fae5;
    --warning-color: #FFBE55;
    --warning-light: #fef3c7;
    --danger-color: #FF6B6B;
    --danger-light: #fee2e2;
    
    /* 阴影 */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.08);
    
    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* 动画 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== 全局重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'SF Pro Display', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ==================== 星期滑轨 ==================== */
.week-rail-container {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) 0;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.week-rail {
    display: flex;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-md);
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
    scroll-padding: var(--spacing-md);
    -webkit-overflow-scrolling: touch;
}

/* 隐藏 Webkit 浏览器（Chrome/Safari）的滚动条 */
.week-rail::-webkit-scrollbar {
    display: none;
}

.history-dates,
.future-dates {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

/* 历史按钮 - 与日期项相同大小 */
.history-button {
    flex-shrink: 0;
    width: 60px;
    height: 70px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--brand-bear-brown), var(--brand-outline));
    color: white;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.history-button i {
    font-size: 20px;
}

.history-label {
    font-size: 12px;
    font-weight: 600;
}

.history-button:hover {
    background: linear-gradient(135deg, var(--brand-outline), #3d2a1a);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.history-button:active {
    transform: translateY(-1px);
}

.date-item {
    position: relative;
    flex-shrink: 0;
    width: 60px;
    height: 70px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.date-item:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.date-item:active {
    transform: scale(0.98);
}

.date-item.active {
    background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
    color: white;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.date-item.today {
    border-color: var(--primary-color);
    border-style: solid;
}

.date-item .weekday {
    font-size: 12px;
    font-weight: 600;
    opacity: 0.85;
    letter-spacing: 0.3px;
}

.date-item .day {
    font-size: 22px;
    font-weight: 700;
    line-height: 1;
}

.date-item .today-dot {
    position: absolute;
    bottom: 8px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--primary-color);
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.date-item.active .today-dot {
    background: white;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ==================== Todo 容器 ==================== */
.todo-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md) 120px;
}

/* ==================== 完成度卡片 ==================== */
.completion-card {
    margin-bottom: var(--spacing-lg);
    animation: slideDown var(--transition-slow);
}

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

.completion-card .card {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    background: var(--bg-primary);
    overflow: hidden;
}

.completion-card .card-body {
    padding: var(--spacing-lg);
}

.completion-card .card-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.completion-stats .progress {
    height: 28px;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    overflow: hidden;
}

.completion-stats .progress-bar {
    font-weight: 600;
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: width var(--transition-slow);
}

/* ==================== Todo 分组 ==================== */
.todo-group {
    margin-bottom: var(--spacing-xl);
}

.group-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding: 0 var(--spacing-xs);
}

.group-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.count-badge {
    min-width: 24px;
    height: 24px;
    padding: 0 var(--spacing-sm);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

/* ==================== Todo 列表项 ==================== */
.todo-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.todo-item-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    animation: fadeIn var(--transition-base);
}

.todo-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xs);
    transition: all var(--transition-base);
    position: relative;
    z-index: 2;
    transform: translateX(0);
    cursor: pointer;
    user-select: none;
}

.todo-checkbox {
    flex-shrink: 0;
}

.todo-content {
    flex: 1;
    min-width: 0;
    margin-right: auto;
}

.todo-priority {
    flex-shrink: 0;
    margin-left: auto;
}

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

.todo-item-wrapper:hover .todo-item {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.todo-item {
    padding-top: 20px !important;
}

.todo-item.completed {
    opacity: 0.65;
    background: var(--bg-secondary);
}

.todo-item.completed .todo-text {
    text-decoration: line-through;
    color: var(--text-tertiary);
}

.todo-checkbox input[type="checkbox"] {
    width: 22px;
    height: 22px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border-color);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.todo-checkbox input[type="checkbox"]:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.todo-checkbox input[type="checkbox"]:hover {
    border-color: var(--primary-color);
    transform: scale(1.1);
}

.todo-content {
    flex: 1;
    min-width: 0;
    margin-right: auto;
}

.todo-text {
    margin-top: -6px;
    font-size: 15px;
    font-weight: 500;
    line-height: 1.5;
    color: var(--text-primary);
    word-wrap: break-word;
}

.recurring-icon {
    color: var(--primary-color);
    font-size: 16px;
    margin-right: 8px;
    vertical-align: middle;
    display: inline-block;
}

.todo-priority {
    margin-top: -8px;
    flex-shrink: 0;
    margin-left: auto;
    padding-left: 12px;
}

.priority-label {
    margin-top: -2px;
    display: inline-block;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    transition: all var(--transition-fast);
}

/* 高优先级 - 红色渐变 */
.priority-high .priority-label {
    background: linear-gradient(135deg, var(--danger-color), #dc2626);
    color: white;
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
}

/* 已完成状态下的优先级标签 */
.todo-item.completed .priority-label {
    opacity: 0.5;
    filter: grayscale(0.5);
}

/* Hover 效果 */
.todo-item:hover .priority-label {
    transform: scale(1.05);
}

/* ==================== 空态 ==================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    animation: fadeIn var(--transition-slow);
}

.empty-icon {
    font-size: 72px;
    margin-bottom: var(--spacing-md);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.empty-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 400px;
    margin: 0 auto;
}

/* ==================== 全局 FAB 按钮 ==================== */
.fab {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
    color: white;
    border: none;
    box-shadow: 0 8px 16px rgba(255, 122, 69, 0.4);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    transition: all var(--transition-base);
    z-index: 999;
    -webkit-tap-highlight-color: transparent;
}

.fab:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: 0 12px 24px rgba(255, 122, 69, 0.5);
}

.fab:active {
    transform: scale(0.95) rotate(90deg);
}

/* ==================== 输入抽屉 ==================== */
.input-drawer {
    position: fixed;
    inset: 0;
    z-index: 1000;
    pointer-events: none;
    transition: all var(--transition-base);
}

.input-drawer.active {
    pointer-events: auto;
}

.drawer-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.input-drawer.active .drawer-overlay {
    opacity: 1;
}

.drawer-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 85vh;
    background: var(--bg-primary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    box-shadow: var(--shadow-xl);
    transform: translateY(100%);
    transition: transform var(--transition-slow);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.input-drawer.active .drawer-content {
    transform: translateY(0);
}

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    background: var(--bg-primary);
    z-index: 1;
}

.drawer-header h5 {
    margin: 0;
    font-size: 19px;
    font-weight: 700;
    color: var(--text-primary);
}

.btn-close-drawer {
    background: var(--bg-secondary);
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    width: 36px;
    height: 36px;
    transition: all var(--transition-fast);
}

.btn-close-drawer:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: scale(1.1);
}

.drawer-body {
    padding: var(--spacing-lg);
}

/* ==================== 按钮样式覆盖 ==================== */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--brand-orange)) !important;
    border: none !important;
    color: white !important;
    font-weight: 600;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(255, 122, 69, 0.3);
}

.btn-primary:disabled,
.btn-primary.disabled {
    background: var(--bg-tertiary) !important;
    color: var(--text-secondary) !important;
    box-shadow: none !important;
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 122, 69, 0.4) !important;
    background: linear-gradient(135deg, var(--primary-hover), var(--brand-orange)) !important;
}

.btn-primary:active {
    transform: translateY(0);
}

/* ==================== 输入区域 ==================== */
.input-section {
    margin-bottom: var(--spacing-lg);
}

/* ==================== 输入区域 ==================== */
.input-wrapper {
    position: relative;
}

.input-wrapper textarea {
    padding-right: 60px; /* 为麦克风按钮留出空间 */
}

.text-input-area textarea {
    width: 100%;
    resize: none;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    padding: var(--spacing-md);
    font-size: 15px;
    font-family: inherit;
    line-height: 1.6;
    transition: all var(--transition-base);
    background: var(--bg-primary);
}

.text-input-area textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 4px var(--primary-light);
}

.text-input-area textarea::placeholder {
    color: var(--text-tertiary);
}

/* 语音触发按钮（输入框右下角） */
.voice-trigger-btn {
    position: absolute;
    right: 8px;
    bottom: 8px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
    border: none;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(255, 122, 69, 0.3);
    z-index: 10;
}

.voice-trigger-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(255, 122, 69, 0.4);
}

.voice-trigger-btn:active {
    transform: scale(0.95);
}

.voice-trigger-btn i {
    font-size: 20px;
}

/* 语音遮罩层（完全覆盖输入框） */
.voice-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(255, 122, 69, 0.95), 
        rgba(243, 106, 56, 0.95));
    border-radius: var(--radius-md);
    z-index: 50;
    animation: fadeIn var(--transition-base);
    backdrop-filter: blur(10px);
}

.voice-overlay-content {
    height: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

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

/* 语音波形可视化 */
.voice-visualizer {
    flex-shrink: 0;
    width: 100px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.wave-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    height: 60%;
}

.wave-bar {
    width: 4px;
    height: 15px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.voice-overlay.recording .wave-bar {
    animation: wave-pulse 1.2s ease-in-out infinite;
    animation-delay: calc(var(--delay) * 0.1s);
}

@keyframes wave-pulse {
    0%, 100% {
        height: 15px;
        background: rgba(255, 255, 255, 0.6);
    }
    25% {
        height: 35px;
        background: rgba(255, 255, 255, 0.9);
    }
    50% {
        height: 50px;
        background: white;
    }
    75% {
        height: 25px;
        background: rgba(255, 255, 255, 0.8);
    }
}

/* 语音文本显示 */
.voice-text-display {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    color: white;
    font-size: 15px;
    font-weight: 500;
    text-align: center;
    padding: 0 var(--spacing-md);
    gap: var(--spacing-sm);
}

.voice-transcript {
    line-height: 1.5;
    animation: fadeIn var(--transition-base);
}

.voice-transcript.interim {
    opacity: 0.8;
    font-style: italic;
}

/* 语音转录Processing状态 */
.voice-processing {
    display: flex;
    flex-direction: row;  /* 改为横向排列 */
    align-items: center;
    gap: 12px;  /* 增加间距 */
    animation: fadeIn var(--transition-base);
}

.voice-processing .spinner-border {
    width: 1.5rem;  /* 稍微缩小spinner */
    height: 1.5rem;
    border-width: 3px;
    color: white !important;
    flex-shrink: 0;  /* 防止spinner被压缩 */
}

.voice-processing .processing-text {
    font-size: 15px;  /* 稍微增大字体 */
    color: rgba(255, 255, 255, 0.95);
    font-weight: 500;
    white-space: nowrap;  /* 防止换行 */
}

/* 停止录音按钮 */
.voice-stop-btn {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: white;
    border: none;
    color: var(--danger-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.voice-stop-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.voice-stop-btn:active {
    transform: scale(0.95);
}

.voice-stop-btn i {
    font-size: 26px;
}

/* 录音状态：停止按钮动画 */
.voice-overlay.recording .voice-stop-btn {
    animation: pulse-button 1.5s ease-in-out infinite;
}

/* Processing状态：禁用停止按钮 */
.voice-overlay.processing .voice-stop-btn {
    opacity: 0.6;
    cursor: not-allowed;
    animation: none;
}

@keyframes pulse-button {
    0%, 100% {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    }
    50% {
        box-shadow: 0 2px 16px rgba(255, 255, 255, 0.5);
    }
}

/* ==================== 预览区域 ==================== */
.preview-section {
    border-top: 1px solid var(--border-light);
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    animation: slideDown var(--transition-slow);
}

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

.preview-header h6 {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
}

.preview-tip {
    font-size: 12px;
    color: var(--text-tertiary);
}

.preview-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.preview-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    animation: fadeIn var(--transition-base);
}

.preview-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 16px;
}

.preview-text {
    flex: 1;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
}

.preview-text strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* 预览中的 Todo 样式 */
.preview-todo-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    gap: 12px;
}

.preview-todo-content {
    display: flex;
    align-items: center;
    flex: 1;
    gap: 8px;
}

.preview-todo-content strong {
    flex-shrink: 0;
}

.preview-todo-content .recurring-icon {
    flex-shrink: 0;
    color: var(--primary-orange);
    font-size: 0.9rem;
    margin: 0 4px;
}

.preview-todo-item .priority-badge {
    flex-shrink: 0;
}

.priority-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.priority-high-badge {
    background: linear-gradient(135deg, var(--danger-color), #dc2626);
    color: white;
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
}

.btn-remove {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-remove:hover {
    background: var(--danger-light);
    color: var(--danger-color);
}

.preview-actions {
    display: flex;
    gap: var(--spacing-md);
}

.preview-actions button {
    flex: 1;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.preview-actions .btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.preview-actions .btn-secondary:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
}

.preview-actions .btn-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: white;
    box-shadow: var(--shadow-sm);
}

.preview-actions .btn-success:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* ==================== Loading 蒙层 ==================== */
/* ==================== LLM 加载指示器 ==================== */
.llm-loading-indicator {
    position: fixed;
    bottom: 120px;
    right: 30px;
    z-index: 1500;
    animation: slideInRight 0.3s ease-out;
}

.llm-loading-content {
    background: white;
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    display: flex;
    align-items: center;
    gap: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.08);
}

.llm-loading-wave {
    display: flex;
    gap: 4px;
    align-items: center;
}

.llm-loading-wave span {
    width: 4px;
    height: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--brand-orange));
    border-radius: 2px;
    animation: waveAnimation 1.2s ease-in-out infinite;
}

.llm-loading-wave span:nth-child(1) {
    animation-delay: 0s;
}

.llm-loading-wave span:nth-child(2) {
    animation-delay: 0.1s;
}

.llm-loading-wave span:nth-child(3) {
    animation-delay: 0.2s;
}

.llm-loading-wave span:nth-child(4) {
    animation-delay: 0.3s;
}

.llm-loading-wave span:nth-child(5) {
    animation-delay: 0.4s;
}

@keyframes waveAnimation {
    0%, 100% {
        height: 20px;
        opacity: 0.6;
    }
    50% {
        height: 32px;
        opacity: 1;
    }
}

.llm-loading-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .llm-loading-indicator {
        bottom: 100px;
        right: 20px;
    }
    
    .llm-loading-content {
        padding: 16px 20px;
    }
}

/* ==================== 旧的加载样式（保留用于其他地方） ==================== */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn var(--transition-base);
}

.loading-text {
    margin-top: var(--spacing-md);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    animation: pulse 1.5s ease-in-out infinite;
}

.spinner-border {
    width: 48px;
    height: 48px;
    border-width: 4px;
}

/* ==================== Toast 优化 ==================== */
.toast-container {
    z-index: 9999;
}

/* Toast 提示 */
#toastContainer {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    border-radius: var(--radius-lg);
    border: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    min-width: 320px;
    backdrop-filter: blur(10px);
    /* 确保每个Toast独立显示 */
    margin-bottom: 0 !important;
}

.toast-body {
    padding: 14px 16px;
    font-size: 14px;
    font-weight: 500;
}

.toast .bi {
    font-size: 20px;
}

.toast .btn-close-white {
    opacity: 0.8;
}

.toast .btn-close-white:hover {
    opacity: 1;
}

/* Toast 动画优化 */
.toast.showing {
    animation: slideInRight 0.3s ease-out;
}

.toast.hide {
    animation: slideOutRight 0.3s ease-in;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    :root {
        --spacing-md: 12px;
        --spacing-lg: 20px;
    }
    
    .todo-container {
        padding: var(--spacing-md) var(--spacing-md) 100px;
    }
    
    .date-item,
    .history-button {
        width: 55px;
        height: 65px;
    }
    
    .date-item .day {
        font-size: 18px;
    }
    
    .history-button i {
        font-size: 18px;
    }
    
    .fab {
        width: 56px;
        height: 56px;
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        font-size: 24px;
    }
    
    .drawer-content {
        max-height: 90vh;
    }
    
    .todo-item {
        padding: var(--spacing-md);
    }
    
    .todo-text {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .date-item,
    .history-button {
        width: 50px;
        height: 60px;
    }
    
    .date-item .weekday {
        font-size: 11px;
    }
    
    .date-item .day {
        font-size: 18px;
    }
    
    .history-button i {
        font-size: 16px;
    }
    
    .history-label {
        font-size: 11px;
    }
    
    .empty-icon {
        font-size: 56px;
    }
    
    .preview-actions {
        flex-direction: column;
    }
}

/* ==================== 打印样式 ==================== */
@media print {
    .fab,
    .input-drawer,
    .loading-overlay,
    .todo-actions {
        display: none !important;
    }
    
    .week-rail-container {
        position: static;
        box-shadow: none;
    }
    
    .todo-item {
        break-inside: avoid;
    }
}

/* ==================== 暗色模式支持（可选） ==================== */
@media (prefers-color-scheme: dark) {
    /* 暗色模式变量可在此定义 */
}

/* ==================== 高对比度模式 ==================== */
@media (prefers-contrast: high) {
    .todo-item {
        border-width: 2px;
    }
}

/* ==================== 减少动画（可访问性） ==================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==================== 滚动条美化 ==================== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-sm);
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) var(--bg-secondary);
}

/* ==================== PWA 安装横幅 ==================== */
.install-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    z-index: 998;
    animation: slideUp var(--transition-slow);
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.install-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.install-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.install-text {
    flex: 1;
}

.install-text strong {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.install-text p {
    margin: 0;
    font-size: 13px;
    color: var(--text-secondary);
}

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

.btn-install {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-install:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-close-install {
    background: var(--bg-secondary);
    border: none;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-close-install:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ==================== 更新通知横幅 ==================== */
.update-banner {
    position: fixed;
    top: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 9998;
    animation: slideDown var(--transition-slow);
}

.update-banner.hide {
    animation: slideUp var(--transition-slow) reverse;
}

.update-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
}

.update-content i {
    font-size: 20px;
}

.update-content span {
    font-weight: 600;
    font-size: 14px;
}

.btn-update {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-update:hover {
    transform: scale(1.05);
}

/* ==================== iOS 安装提示 ==================== */
.ios-install-prompt {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: var(--spacing-lg);
    text-align: center;
    z-index: 998;
    animation: slideUp var(--transition-slow);
}

.ios-prompt-content p {
    margin: var(--spacing-xs) 0;
    font-size: 14px;
}

.ios-prompt-content i {
    font-size: 18px;
    vertical-align: middle;
}

.btn-close-ios {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    margin-top: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-close-ios:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* ==================== PWA 模式优化 ==================== */
body.pwa-mode {
    /* PWA 模式下的额外样式 */
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
}

/* 支持刘海屏 */
@supports (padding: max(0px)) {
    body {
        padding-left: max(0px, env(safe-area-inset-left));
        padding-right: max(0px, env(safe-area-inset-right));
    }
}

/* ==================== 移动端 PWA 优化 ==================== */
@media (max-width: 768px) {
    .install-content {
        padding: var(--spacing-md);
    }
    
    .install-icon {
        font-size: 28px;
    }
    
    .install-text strong {
        font-size: 14px;
    }
    
    .install-text p {
        font-size: 12px;
    }
    
    .btn-install {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 13px;
    }
}

/* ==================== 历史记录抽屉 ==================== */
.history-drawer {
    position: fixed;
    inset: 0;
    z-index: 1050;
    pointer-events: none;
    visibility: hidden;
    transition: visibility 0s var(--transition-base);
}

.history-drawer.active {
    pointer-events: auto;
    visibility: visible;
    transition: visibility 0s;
}

.history-drawer .drawer-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.history-drawer.active .drawer-overlay {
    opacity: 1;
}

.history-drawer .drawer-content {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 90%;
    max-width: 400px;
    background: var(--bg-primary);
    box-shadow: var(--shadow-xl);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.history-drawer.active .drawer-content {
    transform: translateX(0);
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.empty-history {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    color: var(--text-tertiary);
}

.empty-history i {
    font-size: 64px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-history p {
    margin: 0;
    font-size: 15px;
}

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

.history-group-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    padding: 0 var(--spacing-xs);
}

.history-dates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: var(--spacing-sm);
}

.history-date-item {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-base);
}

.history-date-item:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.history-day {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.history-weekday {
    font-size: 11px;
    color: var(--text-secondary);
}

/* ==================== PWA 安装横幅 ==================== */
.install-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--brand-orange) 100%);
    color: white;
    padding: 16px 20px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
    border-bottom: 3px solid rgba(255, 255, 255, 0.2);
}

.install-banner.show {
    transform: translateY(0);
    opacity: 1;
}

.install-banner .install-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    max-width: 1200px;
    margin: 0 auto;
}

.install-banner .install-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.install-banner .install-icon {
    font-size: 32px;
    flex-shrink: 0;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.install-banner .install-text {
    flex: 1;
    min-width: 0;
}

.install-banner .install-text strong {
    display: block;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 2px;
}

.install-banner .install-text p {
    margin: 0;
    font-size: 13px;
    opacity: 0.95;
    color: rgba(255, 255, 255, 0.9);
}

.install-banner .install-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.install-banner .btn-install-primary {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: white;
    color: var(--primary-color);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.install-banner .btn-install-primary:hover {
    background: #f8f8f8;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.install-banner .btn-install-primary:active {
    transform: translateY(0);
}

.install-banner .btn-install-dismiss {
    padding: 8px 16px;
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.install-banner .btn-install-dismiss:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .install-banner {
        padding: 12px 16px;
    }
    
    .install-banner .install-content {
        gap: 12px;
    }
    
    .install-banner .install-icon {
        font-size: 24px;
    }
    
    .install-banner .install-text strong {
        font-size: 14px;
    }
    
    .install-banner .install-text p {
        font-size: 12px;
    }
    
    .install-banner .btn-install-primary {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .install-banner .btn-install-dismiss {
        padding: 6px 12px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .install-banner .install-text p {
        display: none;
    }
    
    .install-banner .btn-install-dismiss {
        padding: 6px 10px;
        font-size: 11px;
    }
}

/* ==================== iOS 安装提示 ==================== */
.ios-install-prompt {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95), rgba(0, 0, 0, 0.85));
    color: white;
    padding: 20px;
    z-index: 9999;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.ios-install-prompt .ios-prompt-content {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
}

.ios-install-prompt p {
    margin: 8px 0;
    font-size: 14px;
    line-height: 1.5;
}

.ios-install-prompt i {
    color: var(--primary-color);
    font-size: 18px;
    vertical-align: middle;
}

.ios-install-prompt .btn-close-ios {
    margin-top: 16px;
    padding: 10px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.ios-install-prompt .btn-close-ios:hover {
    background: var(--brand-orange);
    transform: scale(1.05);
}

/* ==================== 更新通知横幅 ==================== */
.update-banner {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    color: var(--text-primary);
    padding: 16px 20px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 9999;
    animation: slideInRight 0.3s ease-out;
    max-width: 400px;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.update-banner.hide {
    animation: slideOutRight 0.3s ease-out forwards;
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

.update-banner .update-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.update-banner .update-content i {
    font-size: 24px;
    color: var(--primary-color);
}

.update-banner .update-content span {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
}

.update-banner .btn-update {
    padding: 8px 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.update-banner .btn-update:hover {
    background: var(--brand-orange);
    transform: scale(1.05);
}

/* PWA 模式样式调整 */
body.pwa-mode {
    /* 可以添加一些PWA独有的样式 */
}