/* 主题颜色变量 */
:root {
    /* 浅色主题 - 珊瑚粉+暖黄风格 */
    --primary-color: #F76B8A;          /* 主色调：珊瑚粉 */
    --secondary-color: #FBD46D;        /* 次要色/主色2：暖黄 */
    --accent-color: #F76B8A;           /* 强调色：珊瑚粉 */
    --background-color: #F6F5F5;       /* 背景：极浅灰 */
    --text-color: #222831;             /* 文字：深灰 */
    --text-secondary: #393e46;         /* 次要文本：中灰 */
    --card-bg: #ffffff;                /* 卡片背景：白色 */
    --card-shadow: none;
    --header-bg: rgba(246, 245, 245, 0.95);
    --link-color: #F76B8A;             /* 链接：珊瑚粉 */
    --link-hover-color: #FBD46D;       /* 链接悬停：暖黄 */
    --button-bg: #FBD46D;              /* 按钮：暖黄 */
    --button-text: #222831;
    --button-hover-bg: #F76B8A;        /* 按钮悬停：珊瑚粉 */
    --tag-bg: #fff3e0;                 /* 标签背景：淡黄 */
    --tag-text: #F76B8A;               /* 标签文字：珊瑚粉 */
    --border-color: #e0e0e0;           /* 边框：浅灰 */
    --tooltip-bg: #222831;
    --tooltip-text: #F6F5F5;
    --modal-bg: #ffffff;
    --modal-overlay: rgba(34, 40, 49, 0.3);
    --success-color: #FBD46D;          /* 成功：暖黄 */
    --error-color: #F76B8A;            /* 错误：珊瑚粉 */
    --warning-color: #FBD46D;          /* 警告：暖黄 */
    
    /* 表单元素颜色 */
    --input-bg: #F6F5F5;               /* 输入框背景：极浅灰 */
    --input-border: #e0e0e0;           /* 输入框边框：浅灰 */
    --input-text: #222831;
    --input-placeholder: #393e46;
    --input-focus-border: #F76B8A;
    --input-focus-shadow: rgba(247, 107, 138, 0.15);

    /* 组件背景色 */
    --section-bg: #ffffff;              /* 区块背景：白色 */
    --todo-header-bg: #F6F5F5;          /* 待办事项头部：极浅灰 */
    --todo-item-bg: #fff8f6;            /* 待办事项条目：淡珊瑚粉 */
    --modal-content-bg: #ffffff;        /* 模态框内容：白色 */

    /* 悬停状态背景 */
    --hover-bg: #fff3e0;                /* 悬停背景：淡黄 */
}

/* 暗色主题 - 现代清新风格 */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #F76B8A;        /* 主色调：珊瑚粉 */
        --secondary-color: #FBD46D;      /* 次要色/主色2：暖黄 */
        --accent-color: #F76B8A;         /* 强调色：珊瑚粉 */
        --background-color: #232931;     /* 背景：深灰黑 */
        --text-color: #EEEEEE;           /* 文字：亮灰 */
        --card-bg: #2a2327;              /* 卡片背景：深珊瑚灰 */
        --section-bg: #2a2327;           /* 区块背景：深珊瑚灰 */
        --todo-header-bg: #2a2327;       /* 待办事项头部：深珊瑚灰 */
        --todo-item-bg: #33282b;         /* 待办事项条目：深珊瑚粉 */
        --modal-content-bg: #2a2327;     /* 模态框内容：深珊瑚灰 */
        --card-shadow: none;
        --header-bg: rgba(35, 41, 49, 0.95);
        --link-color: #F76B8A;
        --link-hover-color: #FBD46D;
        --button-bg: #FBD46D;
        --button-text: #232931;
        --button-hover-bg: #F76B8A;
        --tag-bg: #33282b;               /* 标签背景：深珊瑚粉 */
        --tag-text: #FBD46D;             /* 标签文字：暖黄 */
        --border-color: #393e46;
        --tooltip-bg: rgba(35, 41, 49, 0.95);
        --tooltip-text: #EEEEEE;
        --modal-bg: #393e46;
        --modal-overlay: rgba(0, 0, 0, 0.7);
        --hover-bg: #3a2f32; /* 悬停背景：深黄褐 */
    }
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Arial, sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* 基础样式 */
body {
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* 导航栏样式 */
.header-nav {
    background: linear-gradient(90deg, #F76B8A 0%, #FBD46D 100%);
    box-shadow: none;
    border-radius: 0 0 18px 18px;
    border-bottom: 1.5px solid #fff3e0;
    padding: 0.5rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: background 0.3s;
}

.header-nav__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    min-height: 56px;
}

.header-nav__links {
    display: flex;
    gap: 28px;
}

.header-nav__link {
    padding: 0.5rem 1.2rem;
    font-size: 1.08em;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
    letter-spacing: 0.5px;
    position: relative;
}

.header-nav__link:hover, .header-nav__link.active {
    background: rgba(255,255,255,0.18);
    color: #FBD46D;
}

.header-nav__user {
    display: flex;
    align-items: center;
    gap: 18px;
}

.header-nav__user-info {
    color: #fff;
    font-size: 0.98em;
    font-weight: 500;
    letter-spacing: 0.2px;
}

.header-nav__button {
    padding: 8px 20px;
    border: none;
    border-radius: 8px;
    background: #fff3e0;
    color: #F76B8A;
    font-weight: 600;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    box-shadow: none;
}

.header-nav__button:hover {
    background: #FBD46D;
    color: #fff;
}

/* 主页英雄区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 4rem 0;
    color: white;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
    overflow: hidden;
    text-align: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('asset/headerBg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: -1;
    filter: brightness(0.6);
}

.hero__container {
    padding: 0;
}

.hero__avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: transform 0.1s ease;
    user-select: none;
}

.hero__avatar:active {
    transform: scale(0.95);
}

.hero__title {
    color: #fff;
    margin-bottom: 1rem;
}

.hero__subtitle {
    font-size: 1.2rem;
    color: #fff;
}

/* 内容区块 */
.section {
    background: var(--section-bg);
    padding: 2rem;
    margin: 2rem 0;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
}

.section:hover {
    /* background: var(--hover-bg); */
}

.section__title {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.section__text {
    margin-bottom: 1rem;
}

/* 活动标签 */
.activities {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.activities__tag {
    background: var(--tag-bg);
    color: var(--tag-text);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    transition: background-color 0.3s ease;
}

/* 跑团按钮 */
.trpg-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 1.5rem;
}

.trpg-button, .movie-button {
    background: #F76B8A;
    color: #fff;
    padding: 12px 24px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.2s, color 0.2s, transform 0.2s;
    text-decoration: none;
    border: none;
    font-weight: 600;
    font-size: 1.08em;
    box-shadow: none;
}

.trpg-button:hover, .movie-button:hover {
    background: #FBD46D;
    color: #F76B8A;
    transform: translateY(-2px) scale(1.04);
}

.trpg-button__icon, .movie-button__icon {
    width: 38px;
    height: 40px;
    vertical-align: middle;
    color: inherit;
}

/* 观影按钮 */
.movie-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 1.5rem;
}

.movie-button {
    /* 这里留空，所有样式由 .trpg-button, .movie-button 统一控制 */
}

.movie-button:hover {
    /* 这里留空，所有样式由 .trpg-button:hover, .movie-button:hover 统一控制 */
}

.movie-button__icon {
    font-size: 24px;
    color: inherit;
    width: 38px;
    text-align: center;
}

/* 待办事项区域 */
.todo-container {
    background: var(--section-bg);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
}

.todo-header {
    display: flex;
    flex-direction: row;
    align-items: center;
    background: var(--todo-header-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.todo-header__item {
    flex: 1 1 0;
    color: #495057;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
}

.todo-header__actions.hidden,
.todo-item__actions.hidden {
    display: none;
}

.todo-header__actions.hidden + .todo-list .todo-item,
.todo-header__actions.hidden ~ .todo-list .todo-item {
    grid-template-columns: minmax(200px, 2fr) 180px 120px 100px 100px 80px;
}

.todo-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.todo-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    background: var(--todo-item-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    margin-bottom: 0;
    transition: all 0.2s ease;
}

.todo-item > div {
    flex: 1 1 0;
    text-align: center;
    min-width: 0;
}

.todo-item:hover {
    background: var(--hover-bg);
}

.todo-item__content {
    min-width: 0;
}

.todo-item__content span,
.todo-item__content a {
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.todo-item__time {
    white-space: nowrap;
}

.todo-item__countdown {
    text-align: center;
    white-space: nowrap;
}

.todo-item__duration {
    text-align: center;
    white-space: nowrap;
}

.todo-item__type {
    text-align: center;
}

.todo-item__details {
    text-align: center;
}

.todo-item__actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

.todo-item__link {
    color: #0d93db;
    text-decoration: none;
    transition: color 0.2s ease;
    display: inline-block;
    position: relative;
}

.todo-item__link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    bottom: 0;
    left: 0;
    background-color: #0d93db;
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.3s ease;
}

.todo-item__link:hover {
    color: #0b7ab8;
}

.todo-item__link:hover::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

/* 标签样式 */
.tag {
    padding: 0 12px !important;
    font-size: 13px !important;
    font-weight: 600 !important;
    line-height: 22px !important;
    border-radius: 2em !important;
    border: none !important;
    background: #F76B8A !important;
    color: #fff !important;
    box-shadow: none !important;
    letter-spacing: 0.5px;
    display: inline-block;
    min-width: 48px;
    text-align: center;
}

.tag--movie,
.tag--trpg {
    background: #F76B8A !important;
    color: #fff !important;
}

/* 按钮样式 */
.action-btn {
    padding: 0.6rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.action-btn i {
    font-size: 1.2rem;
}

.action-btn--edit {
    color: var(--secondary-color);
}

.action-btn--edit:hover {
    background: rgba(78, 205, 196, 0.1);
    transform: translateY(-2px);
}

.action-btn--delete {
    color: var(--error-color);
}

.action-btn--delete:hover {
    background: rgba(255, 107, 107, 0.1);
    transform: translateY(-2px);
}

/* 添加新待办按钮 */
.todo-add {
    margin-top: 1.5rem;
    text-align: center;
}

.todo-add__btn {
    background: #0d93db;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.todo-add__btn:hover {
    background: #0b7ab8;
    transform: translateY(-1px);
}

.todo-add__btn i {
    font-size: 1.1em;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .todo-header,
    .todo-item {
        font-size: 0.9em;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: 80vh;
        padding: 2rem 1rem;
    }
    
    .hero__title {
        font-size: 2.5rem;
    }

    .todo-header,
    .todo-item {
        flex-direction: column;
        gap: 0.5rem;
    }

    .todo-header {
        display: none;
    }

    .todo-item {
        padding: 1rem;
        position: relative;
    }

    .todo-item > div {
        text-align: left;
    }

    .todo-item__time,
    .todo-item__countdown,
    .todo-item__duration,
    .todo-item__type {
        font-size: 0.9em;
        color: #666;
        text-align: left;
    }

    .todo-item__details {
        text-align: left;
    }

    .todo-item__actions {
        position: absolute;
        top: 1rem;
        right: 1rem;
        display: flex;
        gap: 0.5rem;
    }
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--modal-overlay);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal__content {
    background: var(--modal-content-bg) !important;
    color: var(--text-color);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
}

.modal__header {
    padding: 1rem;
    border-bottom: 1px solid #e9ecef;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal__title {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.25rem;
}

.modal__close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #6c757d;
    padding: 0.5rem;
}

.modal__close:hover {
    color: #343a40;
}

.modal__body {
    padding: 1rem;
}

.modal__footer {
    padding: 1rem;
    border-top: 1px solid #e9ecef;
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #495057;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    background: var(--card-bg);
    color: var(--text-color);
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
}

/* 按钮样式 */
.btn,
button {
    background-color: var(--button-bg) !important;
    color: var(--button-text) !important;
    border: 1px solid rgba(27, 31, 36, 0.15) !important;
    border-radius: 6px !important;
    padding: 5px 16px !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    line-height: 20px !important;
    transition: all 0.2s ease !important;
}

.btn:hover,
button:hover {
    background-color: var(--button-hover-bg) !important;
    transform: none !important;
}

/* 工具类 */
.hidden {
    display: none !important;
}

/* Tooltip样式 */
.tooltip {
    position: relative;
    display: inline-block;
    color: #6c757d;
    cursor: pointer;
}

.tooltip i {
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.tooltip:hover i {
    color: #0d93db;
}

.tooltip__content {
    visibility: hidden;
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--tooltip-bg) !important;
    color: var(--tooltip-text) !important;
    text-align: center;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    white-space: nowrap;
    z-index: 1;
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    box-shadow: var(--card-shadow);
    min-width: 120px;
    max-width: 250px;
    white-space: normal;
}

.tooltip__content::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--tooltip-bg) transparent transparent transparent;
}

.tooltip:hover .tooltip__content {
    visibility: visible;
    opacity: 1;
}

/* 时间显示样式 */
.time-display {
    color: #0d93db;
    font-weight: 500;
}

/* 自定义 flatpickr 样式 */
.flatpickr-calendar {
    background: white !important;
    box-shadow: none !important;
    border: none !important;
    margin: 0 !important;
    padding: 0 !important;
    width: 300px !important;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif !important;
}

.flatpickr-months {
    background: #f8f9fa;
    border-radius: 8px 8px 0 0;
    padding: 12px 0 8px;
    margin-bottom: 8px;
    display: flex !important;
    align-items: center !important;
}

.flatpickr-month {
    height: auto !important;
    background: transparent !important;
    color: #333 !important;
    fill: #333 !important;
    padding: 0 !important;
    position: relative !important;
    overflow: visible !important;
}

.flatpickr-current-month {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    position: relative !important;
    transform: none !important;
    left: auto !important;
    width: auto !important;
    font-size: 1em !important;
    padding: 0 !important;
    height: auto !important;
}

.flatpickr-current-month span.cur-month {
    font-family: inherit !important;
    font-weight: 600 !important;
    color: #333 !important;
    margin: 0 5px !important;
}

.flatpickr-current-month .numInputWrapper {
    width: auto !important;
    height: auto !important;
    display: inline-block !important;
}

.flatpickr-current-month input.cur-year {
    font-size: 1em !important;
    font-weight: 600 !important;
    color: #333 !important;
    padding: 0 !important;
    margin: 0 !important;
    width: 4ch !important;
}

.flatpickr-months .flatpickr-prev-month,
.flatpickr-months .flatpickr-next-month {
    position: relative !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: 5px !important;
    height: 34px !important;
    z-index: 3 !important;
    color: #666 !important;
    fill: #666 !important;
}

.flatpickr-months .flatpickr-prev-month svg,
.flatpickr-months .flatpickr-next-month svg {
    width: 16px !important;
    height: 16px !important;
}

.flatpickr-weekdays {
    background: transparent !important;
    margin-bottom: 8px;
}

.flatpickr-weekday {
    background: transparent !important;
    color: #666 !important;
    font-size: 0.9em !important;
    font-weight: 500 !important;
}

.flatpickr-days {
    padding: 0 8px !important;
}

.flatpickr-day {
    border-radius: 6px !important;
    margin: 2px !important;
    height: 36px !important;
    line-height: 36px !important;
    color: #333 !important;
    font-weight: 400 !important;
    border: 1px solid transparent !important;
}

.flatpickr-day.selected {
    background: #0d93db !important;
    border-color: #0d93db !important;
    color: white !important;
    font-weight: 500 !important;
}

.flatpickr-day.today {
    border-color: #0d93db !important;
    color: #0d93db !important;
    font-weight: 500 !important;
}

.flatpickr-day:hover {
    background: #e6f3fa !important;
    border-color: transparent !important;
}

.flatpickr-time {
    background: #f8f9fa !important;
    border-top: 1px solid #eee !important;
    border-radius: 0 0 8px 8px;
    height: 44px !important;
    margin: 8px -12px -12px;
    padding: 0 12px;
}

.flatpickr-time input {
    color: #333 !important;
    font-weight: 500 !important;
    height: 44px !important;
}

.flatpickr-time input:hover,
.flatpickr-time input:focus {
    background: transparent !important;
}

.flatpickr-time .flatpickr-am-pm {
    height: 44px !important;
    color: #666 !important;
}

.numInputWrapper:hover {
    background: transparent !important;
}

.numInputWrapper span {
    border: none !important;
    padding: 0 8px !important;
}

.numInputWrapper span:hover {
    background: rgba(0, 0, 0, 0.05) !important;
}

/* 确保日历不会被其他元素遮挡 */
.todo-list {
    overflow: visible !important;
}

.todo-container {
    overflow: visible !important;
}

/* 倒计时样式 */
.countdown {
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.countdown--past {
    background: rgba(255, 107, 107, 0.15);
    color: var(--error-color);
}

.countdown--today {
    background: rgba(255, 217, 61, 0.15);
    color: var(--warning-color);
}

.countdown--future {
    background: rgba(78, 205, 196, 0.15);
    color: var(--success-color);
}

/* 强制覆盖第三方组件样式 */
.flatpickr-calendar,
.flatpickr-months,
.flatpickr-month,
.flatpickr-weekdays,
.flatpickr-weekday,
.flatpickr-day {
    background: var(--todo-item-bg) !important;
    color: var(--text-color) !important;
    border-color: var(--border-color) !important;
}

.flatpickr-day.selected {
    background: var(--primary-color) !important;
    color: var(--button-text) !important;
    border-color: var(--primary-color) !important;
}

.flatpickr-day.today {
    border-color: var(--secondary-color) !important;
    color: var(--secondary-color) !important;
}

/* 表单元素样式 */
input[type="text"],
input[type="password"],
input[type="email"],
input[type="url"],
input[type="number"],
input[type="datetime-local"],
select,
textarea {
    background-color: var(--input-bg) !important;
    border: 1px solid var(--input-border) !important;
    color: var(--input-text) !important;
    border-radius: 6px !important;
    padding: 5px 12px !important;
    font-size: 14px !important;
    line-height: 20px !important;
    width: 100% !important;
    transition: all 0.3s ease !important;
}

input::placeholder,
textarea::placeholder {
    color: var(--input-placeholder) !important;
}

input:focus,
textarea:focus,
select:focus {
    background-color: var(--hover-bg) !important;
    border-color: var(--input-focus-border) !important;
    outline: none !important;
    box-shadow: 0 0 0 3px var(--input-focus-shadow) !important;
}

/* 按钮样式强制覆盖 */
.btn,
button {
    background-color: var(--button-bg) !important;
    color: var(--button-text) !important;
    border: none !important;
    padding: 0.75rem 1.5rem !important;
    border-radius: 6px !important;
    cursor: pointer !important;
    transition: all 0.3s ease !important;
}

.btn:hover,
button:hover {
    background-color: var(--button-hover-bg) !important;
    transform: translateY(-1px) !important;
}

/* 组件去除阴影 */
.section,
.todo-container,
.modal__content {
    box-shadow: none !important;
}