/* 基础重置和字体设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
    user-select: none; /* 禁止选中文本 */
    -webkit-user-select: none; /* Safari */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* IE/Edge */
}

/* 自定义滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: rgba(210, 180, 140, 0.5); /* 木纹色 */
    border-radius: 4px;
    transition: background 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(210, 180, 140, 0.7); /* 悬停时加深 */
}

/* Firefox 滚动条样式 */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(210, 180, 140, 0.5) rgba(255, 255, 255, 0.1);
}

/* 基础布局样式 */
html, body {
    min-height: 100vh;
    font-family: 'Comic Sans MS', 'Chalkboard SE', 'Marker Felt', sans-serif;
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
}

body {
    background-color: #f4e9d8;
    color: #333;
}

@font-face {
    font-family: 'Digital';
    src: url('https://cdn.jsdelivr.net/gh/MoLeft/LoveDiary-Timeline@main/fonts/DS-DIG.ttf') format('truetype');
    font-display: swap;
}

/* 禁用缩放 */
html {
    touch-action: manipulation;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent;
}
body {
    touch-action: manipulation;
    -webkit-overflow-scrolling: touch;
}

.container {
    width: 100%;
    max-width: 400px;
    background-color: #fff;
    border-radius: 20px; /* 更圆润的边角 */
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 4px solid #d2b48c; /* 木纹边框 */
    position: relative;
    z-index: 1;
    margin: 20px auto;
    flex: 1;
}

/* 时间计数器样式 */
.time-counter {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2px;
    margin: 10px 0;
    font-family: 'Digital', monospace;
    font-size: 1.2em;
    color: white;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
}

.time-unit {
    background: rgba(0, 0, 0, 0.2);
    padding: 2px 4px;
    border-radius: 4px;
    min-width: 24px;
    text-align: center;
    font-family: 'Digital', monospace;
}

.time-label {
    margin: 0 2px;
    font-size: 0.8em;
    opacity: 0.9;
    font-family: sans-serif;
}

/* 计数器区域样式 */
.counter-section {
    color: white;
    padding: 35px 20px;
    text-align: center;
    width: 100%;
    border-radius: 15px 15px 0 0;
    position: relative;
    min-height: 260px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    backdrop-filter: blur(5px) saturate(180%);
    -webkit-backdrop-filter: blur(5px) saturate(180%);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 背景图片、模糊和叠加层的伪元素 */
.counter-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background-size: cover;
    background-position: center;
    background-image: var(--bg-image, linear-gradient(135deg, #5b8cff, #00d2ff));
    filter: blur(var(--bg-blur, 8px)) brightness(1.1);
    opacity: var(--bg-opacity, 0.8);
    transform: scale(1.1);
}

/* 背景图片上方的可选颜色叠加层 */
.counter-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background-color: var(--bg-overlay, rgba(0, 0, 0, 0.2));
}

.counter-text {
    font-size: 1.3em;
    margin-bottom: 15px;
    opacity: 0.95;
    position: relative; /* 确保文本在伪元素之上 */
    z-index: 1;
}

/* 计数器行的新样式 */
.counter-line {
    display: flex;
    align-items: baseline; /* 对齐文本基线 */
    justify-content: center;
    line-height: 1;
    margin-bottom: 15px; /* 调整间距 */
    position: relative; /* 确保文本在伪元素之上 */
    z-index: 1;
}

.counter-days {
    font-size: 8em;
    font-weight: bold;
    transition: transform 0.3s ease-out;
    margin-right: 15px;
    font-family: 'Microsoft YaHei', sans-serif;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 5px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.counter-label {
    margin: 0 2px;
    font-size: 1.2em;
    opacity: 0.9;
    font-family: 'Microsoft YaHei', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.start-date {
    font-size: 0.95em;
    opacity: 0.85;
    margin-top: 10px;
    position: relative;
    z-index: 1;
    font-family: sans-serif;
}

/* 时间线区域样式 */
.timeline-section {
    padding: 25px 20px;
    width: 100%;
    background-color: #fffaf0; /* 奶油白色背景 */
    border-radius: 0 0 15px 15px; /* 保持底部圆角 */
}

/* 增强的时间线项目样式 */
.timeline-item {
    background-color: #ffffff;
    padding: 18px;
    margin-bottom: 20px;
    border-radius: 12px;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.08);
    border: 2px solid #e0e0e0;
    position: relative; /* 用于可能的装饰 */
    transition: transform 0.2s ease-in-out;
}

/* 置顶角标样式 */
.timeline-item.pinned::after {
    content: '置顶';
    position: absolute;
    top: 0;
    right: 0;
    background: linear-gradient(135deg, #ff6b6b, #ff8e8e);
    color: white;
    padding: 4px 12px;
    font-size: 0.8em;
    border-bottom-left-radius: 12px;
    border-top-right-radius: 10px;
    box-shadow: -2px 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 1;
}

.timeline-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.12);
}

.timeline-date {
    font-size: 0.9em;
    color: #888;
    margin-bottom: 8px;
    font-weight: bold;
    font-family: sans-serif;
}

.timeline-item h3 {
    margin-bottom: 8px;
    color: #3a7bd5;
    font-size: 1.2em;
    font-family: sans-serif;
}

.timeline-item p {
    font-size: 1em;
    color: #555;
    line-height: 1.5;
    font-family: sans-serif;
}

.timeline-item img {
    max-width: 100%;
    border-radius: 8px;
    margin-top: 12px;
    border: 1px solid #eee;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.timeline-item img.loaded {
    opacity: 1;
}

/* 反馈/响应文本样式 */
.feedback-content {
    margin-top: 0px;
    padding: 15px;
    border-radius: 8px;
    font-size: 0.95em;
    background-color: #e0f7fa; /* 记忆反馈的浅青色背景 */
    color: #00796b; /* 青色文字 */
    border-left: 4px solid #00bcd4; /* 青色边框 */
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    line-height: 1.6;
}

.feedback-content p {
    margin: 0;
    padding: 0;
}

/* 交互区域样式 */
.interaction-section {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 2px dashed #add8e6; /* 浅蓝色虚线边框 */
}

.interaction-prompt strong {
    color: #ff6b6b; /* 提示文字使用活泼的红色 */
    font-size: 1.05em;
}

/* 统一的按钮容器样式 */
.interaction-buttons {
    margin-top: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

/* 统一的按钮样式 */
.interaction-button {
    background-color: #ffcc80; /* 浅橙色 */
    color: #5d4037; /* 棕色文字 */
    border: none;
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-family: sans-serif;
    font-size: 0.9em;
    font-weight: bold;
    transition: background-color 0.2s ease, transform 0.1s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 5px;
    margin: 2px 0;
}

.interaction-button:hover {
    background-color: #ffb74d; /* 悬停时更深的橙色 */
    transform: translateY(-1px);
}

.interaction-button:active {
    transform: translateY(0px);
}

/* 天数显示样式 */
.days-ago {
    font-size: 0.8em;
    opacity: 0.8;
    font-weight: normal;
}

/* 反馈/响应文本样式 */
.interaction-section p[id^="feedback-"] {
    margin-top: 10px;
    padding: 10px;
    border-radius: 8px;
    font-size: 0.95em;
    background-color: #e0f7fa; /* 记忆反馈的浅青色背景 */
    color: #00796b; /* 青色文字 */
    border-left: 4px solid #00bcd4; /* 青色边框 */
}

/* 模态框样式 */
.modal {
    display: none; /* 默认隐藏 */
    position: fixed; /* 固定位置 */
    z-index: 1000; /* 置于顶层 */
    left: 0;
    top: 0;
    width: 100%; /* 全宽 */
    height: 100%; /* 全高 */
    overflow: auto; /* 需要时启用滚动 */
    background-color: rgba(0,0,0,0.5); /* 半透明黑色背景 */
    padding-top: 60px; /* 模态框位置 */
}

.modal-content {
    background-color: #fefefe;
    margin: 5% auto; /* 顶部5%并居中 */
    padding: 25px;
    border: 1px solid #888;
    width: 85%; /* 根据屏幕大小调整 */
    max-width: 500px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    position: relative;
    font-family: sans-serif; /* 模态框内容使用更易读的字体 */
}

/* 模态框内Markdown内容样式 */
#modal-body h1, #modal-body h2, #modal-body h3 {
    margin-top: 15px;
    margin-bottom: 10px;
    color: #333;
}
#modal-body p {
    margin-bottom: 10px;
    line-height: 1.6;
    color: #444;
}
#modal-body ul, #modal-body ol {
    margin-left: 20px;
    margin-bottom: 10px;
}
#modal-body code {
    background-color: #f0f0f0;
    padding: 2px 5px;
    border-radius: 4px;
    font-family: monospace;
}
#modal-body pre {
    background-color: #f0f0f0;
    padding: 10px;
    border-radius: 4px;
    overflow-x: auto;
}
#modal-body blockquote {
    border-left: 4px solid #ccc;
    padding-left: 10px;
    color: #666;
    margin-left: 0;
    margin-right: 0;
}

/* 夜间模式下的模态框内容样式 */
[data-theme="dark"] #modal-body h1,
[data-theme="dark"] #modal-body h2,
[data-theme="dark"] #modal-body h3 {
    color: #e0e0e0;
}

[data-theme="dark"] #modal-body p {
    color: #ccc;
}

[data-theme="dark"] #modal-body code {
    background-color: #2d2d2d;
    color: #e0e0e0;
}

[data-theme="dark"] #modal-body pre {
    background-color: #2d2d2d;
    color: #e0e0e0;
}

[data-theme="dark"] #modal-body blockquote {
    border-left-color: #666;
    color: #aaa;
}

[data-theme="dark"] #modal-body a {
    color: #7cb9ff;
}

[data-theme="dark"] #modal-body a:hover {
    color: #4dabff;
}

[data-theme="dark"] #modal-body strong {
    color: #fff;
}

[data-theme="dark"] #modal-body em {
    color: #ddd;
}

[data-theme="dark"] #modal-body table {
    color: #e0e0e0;
}

[data-theme="dark"] #modal-body table th {
    background-color: #2d2d2d;
}

[data-theme="dark"] #modal-body table td {
    border-color: #444;
}

/* 模态框内图片样式 */
#modal-body img {
    width: 100%;
    height: auto;
    display: block;
    margin: 5px 0px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

#modal-body img.loaded {
    opacity: 1;
}

#modal-body .image-container {
    position: relative;
    width: 100%;
    margin: 5px 0px;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 16/9;
    background-color: #f5f5f5;
    transition: aspect-ratio 0.3s ease-in-out;
}

#modal-body .image-container.loaded {
    aspect-ratio: auto;
}

#modal-body .image-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #d0d0d0;
    animation: breathing 2s ease-in-out infinite;
    z-index: 1;
}

#modal-body .image-container.loaded::after {
    display: none;
}

/* 夜间模式下的模态框图片样式 */
[data-theme="dark"] #modal-body .image-container {
    background-color: #2d2d2d;
}

[data-theme="dark"] #modal-body .image-container::after {
    background-color: #3d3d3d;
}

/* 图片懒加载样式 */
.image-container {
    position: relative;
    width: 100%;
    margin-top: 12px;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 16/9;
    background-color: #f5f5f5;
    transition: aspect-ratio 0.3s ease-in-out;
}

.image-container.loaded {
    aspect-ratio: auto;
}

.lazy-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.3s ease-in-out;
}

.lazy-image.loaded {
    position: relative;
    height: auto;
    object-fit: contain;
    opacity: 1;
}

/* 占位效果 */
.image-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #d0d0d0;
    animation: breathing 2s ease-in-out infinite;
    z-index: 1;
}

.image-container.loaded::after {
    display: none;
}

@keyframes breathing {
    0% {
        opacity: 0.3;
        background-color: #d0d0d0;
    }
    50% {
        opacity: 0.9;
        background-color: #f5f5f5;
    }
    100% {
        opacity: 0.3;
        background-color: #d0d0d0;
    }
}

/* 夜间模式下的呼吸动画 */
[data-theme="dark"] .image-container::after {
    animation: breathing-dark 2s ease-in-out infinite;
}

@keyframes breathing-dark {
    0% {
        opacity: 0.3;
        background-color: #3d3d3d;
    }
    50% {
        opacity: 0.9;
        background-color: #2d2d2d;
    }
    100% {
        opacity: 0.3;
        background-color: #3d3d3d;
    }
}

.close-button {
    color: #aaa;
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 28px;
    font-weight: bold;
}

.close-button:hover,
.close-button:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

/* 响应式调整 */
@media (min-width: 600px) {
    .container {
        max-width: 500px;
    }
}

/* 密码输入界面样式 */
.password-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    border-radius: 20px;
    pointer-events: auto;
}

.password-container {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: 300px;
    pointer-events: auto;
    transition: transform 0.3s ease;
}

.password-container h2.password-title {
    color: #333;
    margin-bottom: 20px;
    font-family: sans-serif;
    font-size: 1.2em;
    transition: all 0.3s ease;
}

.password-container.error h2.password-title {
    color: #ff6b6b;
}

.password-dots {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid #333;
    transition: all 0.3s ease;
}

.dot.filled {
    background-color: #333;
}

/* 错误状态动画 */
.password-container.error {
    animation: shake 0.5s ease-in-out;
    border-color: #ff6b6b;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.password-error {
    color: #ff6b6b;
    margin-top: 20px;
    font-family: sans-serif;
    font-size: 0.9em;
    display: none;
}

.keypad {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.keypad-row {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.key {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.05);
    border: none;
    color: #333;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: sans-serif;
}

.key:active {
    background: rgba(0, 0, 0, 0.1);
    transform: scale(0.95);
}

.key-empty {
    background: transparent;
    cursor: default;
}

.key-empty:active {
    background: transparent;
    transform: none;
}

.key-delete {
    background: rgba(0, 0, 0, 0.05);
}

.key-delete svg {
    width: 24px;
    height: 24px;
    color: #333;
}

/* 设置按钮样式 */
.settings-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    transition: transform 0.2s;
    user-select: none;
}

.settings-button:hover {
    transform: scale(1.1);
}

.settings-button svg {
    width: 24px;
    height: 24px;
    color: #333;
}

/* 设置对话框样式 */
.settings-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1001;
}

.settings-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    padding: 25px;
    border-radius: 15px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.settings-content h2 {
    margin: 0 0 25px 0;
    color: #333;
    text-align: center;
    font-size: 1.5em;
    font-weight: 600;
}

.settings-list {
    margin-bottom: 25px;
}

.settings-item {
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

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

.settings-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.settings-item-title {
    font-size: 1.1em;
    color: #333;
    font-weight: 500;
}

.settings-item-description {
    font-size: 0.9em;
    color: #666;
    margin-top: 8px;
}

.settings-item-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 开关样式 */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    transition: .4s;
}

input:checked + .slider {
    background-color: #4CAF50;
}

input:focus + .slider {
    box-shadow: 0 0 1px #4CAF50;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 24px;
}

.slider.round:before {
    border-radius: 50%;
}

/* 输入框样式 */
.settings-input {
    width: 80px;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1em;
    text-align: center;
}

.settings-unit {
    color: #666;
    font-size: 0.9em;
}

/* 保存按钮样式 */
.settings-actions {
    margin-top: 25px;
    text-align: center;
}

.settings-actions .settings-button {
    position: static;
    width: 100%;
    height: auto;
    background: linear-gradient(135deg, #4CAF50, #45a049);
    border: none;
    border-radius: 12px;
    padding: 14px 24px;
    color: white;
    font-size: 1.1em;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.2);
    display: inline-block;
    cursor: pointer;
    text-transform: none;
    text-decoration: none;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

.settings-actions .settings-button:hover {
    background: linear-gradient(135deg, #45a049, #3d8b40);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.3);
}

.settings-actions .settings-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(76, 175, 80, 0.2);
    background: linear-gradient(135deg, #3d8b40, #357935);
}

.settings-actions .settings-button:focus {
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.3);
}

/* 拖动时的样式 */
.settings-button.dragging {
    opacity: 0.8;
    cursor: grabbing;
}

/* 回到顶部按钮样式 */
.back-to-top {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    user-select: none;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
    color: #333;
    transition: transform 0.3s ease;
}

.back-to-top:hover svg {
    transform: translateY(-2px);
}

.back-to-top:active {
    transform: translateY(0);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

/* 设置对话框关闭按钮样式 */
.settings-close-button {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 30px;
    height: 30px;
    border: none;
    background: none;
    color: #666;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
    z-index: 1;
}

.settings-close-button svg {
    width: 20px;
    height: 20px;
    transition: all 0.3s ease;
}

.settings-close-button:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: #333;
}

.settings-close-button:hover svg {
    transform: rotate(90deg);
}

.settings-close-button:active {
    background-color: rgba(0, 0, 0, 0.1);
    transform: scale(0.95);
}

/* 拖动时的样式 */
.settings-button.dragging {
    opacity: 0.8;
    cursor: grabbing;
}

/* 夜间模式样式 */
[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --card-bg: #1e1e1e;
    --border-color: #2d2d2d;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --hover-bg: #2d2d2d;
    --timeline-bg: #1a1a1a;
    --timeline-item-bg: #242424;
    --timeline-border: #2d2d2d;
    --feedback-bg: #1a2a2a;
    --feedback-border: #00bcd4;
    --feedback-text: #e0f7fa;
    --button-bg: #2d2d2d;
    --button-hover-bg: #3d3d3d;
    --button-text: #e0e0e0;
    --modal-bg: #1e1e1e;
    --modal-text: #e0e0e0;
    --settings-bg: #1e1e1e;
    --settings-border: #2d2d2d;
    --settings-text: #e0e0e0;
    --settings-hover: #2d2d2d;
    --keypad-bg: #2d2d2d;
    --keypad-key-bg: #3d3d3d;
    --keypad-key-hover: #4d4d4d;
    --keypad-text: #e0e0e0;
    --counter-bg: rgba(0, 0, 0, 0.3);
    --counter-text: #ffffff;
    --time-unit-bg: rgba(0, 0, 0, 0.4);
    --time-label-color: rgba(255, 255, 255, 0.8);
}

/* 应用夜间模式变量 */
html[data-theme="dark"],
body[data-theme="dark"] {
    background-color: var(--bg-color) !important;
    color: var(--text-color) !important;
}

[data-theme="dark"] .container {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    box-shadow: 0 6px 20px var(--shadow-color);
}

[data-theme="dark"] .timeline-section {
    background-color: var(--timeline-bg);
}

[data-theme="dark"] .timeline-item {
    background-color: var(--timeline-item-bg);
    border-color: var(--timeline-border);
    box-shadow: 0 3px 8px var(--shadow-color);
}

[data-theme="dark"] .timeline-item:hover {
    background-color: var(--hover-bg);
}

[data-theme="dark"] .timeline-date {
    color: #aaa;
}

[data-theme="dark"] .timeline-item h3 {
    color: #7cb9ff;
}

[data-theme="dark"] .timeline-item p {
    color: #ccc;
}

[data-theme="dark"] .feedback-content {
    background-color: #e0f7fa;
    color: #00796b;
    border-left-color: #00bcd4;
}

[data-theme="dark"] .interaction-button {
    background-color: #ffcc80;
    color: #5d4037;
}

[data-theme="dark"] .interaction-button:hover {
    background-color: #ffb74d;
}

[data-theme="dark"] .interaction-button:active {
    background-color: #ffa726;
}

[data-theme="dark"] .modal-content {
    background-color: var(--modal-bg);
    color: var(--modal-text);
    border-color: var(--border-color);
}

[data-theme="dark"] .settings-content {
    background-color: var(--settings-bg);
    color: var(--settings-text);
}

[data-theme="dark"] .settings-item {
    border-bottom-color: var(--settings-border);
}

[data-theme="dark"] .settings-item-title {
    color: var(--settings-text);
}

[data-theme="dark"] .settings-item-description {
    color: #aaa;
}

[data-theme="dark"] .settings-input {
    background-color: var(--keypad-bg);
    border-color: var(--border-color);
    color: var(--settings-text);
}

[data-theme="dark"] .settings-unit {
    color: #aaa;
}

[data-theme="dark"] .settings-close-button {
    color: #aaa;
}

[data-theme="dark"] .settings-close-button:hover {
    background-color: var(--settings-hover);
    color: var(--settings-text);
}

[data-theme="dark"] .back-to-top,
[data-theme="dark"] .settings-button {
    background-color: var(--keypad-bg);
    box-shadow: 0 2px 10px var(--shadow-color);
}

[data-theme="dark"] .back-to-top svg,
[data-theme="dark"] .settings-button svg {
    color: var(--settings-text);
}

/* 密码输入界面夜间模式样式 */
[data-theme="dark"] .password-screen {
    background: rgba(0, 0, 0, 0.8);
}

[data-theme="dark"] .password-container {
    background-color: var(--keypad-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .password-title {
    color: var(--keypad-text);
}

[data-theme="dark"] .dot {
    border-color: var(--keypad-text);
}

[data-theme="dark"] .dot.filled {
    background-color: var(--keypad-text);
}

[data-theme="dark"] .key {
    background-color: var(--keypad-key-bg);
    color: var(--keypad-text);
}

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

[data-theme="dark"] .key-delete {
    background-color: var(--keypad-key-bg);
}

[data-theme="dark"] .key-delete svg {
    color: var(--keypad-text);
}

/* 计数器夜间模式样式 */
[data-theme="dark"] .counter-section {
    background-color: var(--counter-bg);
}

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

[data-theme="dark"] .counter-days {
    color: var(--counter-text);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

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

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

[data-theme="dark"] .time-unit {
    background-color: var(--time-unit-bg);
    color: var(--counter-text);
}

[data-theme="dark"] .time-label {
    color: var(--time-label-color);
}

[data-theme="dark"] .start-date {
    color: var(--time-label-color);
}

/* 设置按钮夜间模式样式 */
[data-theme="dark"] .settings-actions .settings-button {
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.2);
}

[data-theme="dark"] .settings-actions .settings-button:hover {
    background: linear-gradient(135deg, #45a049, #3d8b40);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.3);
}

[data-theme="dark"] .settings-actions .settings-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(76, 175, 80, 0.2);
    background: linear-gradient(135deg, #3d8b40, #357935);
}

/* 图片容器夜间模式样式 */
[data-theme="dark"] .image-container {
    background-color: var(--timeline-item-bg);
}

[data-theme="dark"] .image-container::after {
    background-color: var(--timeline-bg);
}

@keyframes breathing {
    0% {
        opacity: 0.3;
        background-color: var(--timeline-bg);
    }
    50% {
        opacity: 0.9;
        background-color: var(--timeline-item-bg);
    }
    100% {
        opacity: 0.3;
        background-color: var(--timeline-bg);
    }
}

/* 设置项样式 */
.settings-item.theme-settings {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.theme-settings-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.theme-settings-label {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.theme-settings-title {
    font-size: 1.1em;
    color: var(--settings-text, #333);
}

.theme-settings-description {
    font-size: 0.9em;
    color: var(--settings-description, #666);
}

/* 夜间模式滚动条样式 */
[data-theme="dark"] ::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: rgba(128, 128, 128, 0.8);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: rgba(128, 128, 128, 0.9);
}

[data-theme="dark"] * {
    scrollbar-color: rgba(128, 128, 128, 0.8) rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .password-container h2.password-title {
    color: #b5b5b5;
}

/* Footer Styles */
.footer {
    width: 100%;
    background-color: var(--background-color);
    border-top: 1px solid var(--border-color);
    padding: 15px 0;
    text-align: center;
    margin-top: auto;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-color);
    max-width: 400px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-row {
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-row.badges {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.github-link, .badge-link {
    display: inline-block;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.github-link:hover, .badge-link:hover {
    transform: scale(1.05);
}

.github-link img, .badge-link img {
    display: block;
    height: 20px;
    border-radius: 4px;
}

.copyright {
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.8;
}