/* 全局样式 - 使用CSS变量与header.php保持一致 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--light-color);
    color: var(--text-color, var(--dark-color));
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* 深色主题适配 */
[data-theme="dark"] {
    body {
        background: var(--light-color);
    }
}

/* 文本颜色适配 */
.text-primary {
    color: var(--primary-color) !important;
}

.text-secondary {
    color: var(--text-secondary, var(--dark-color)) !important;
}

/* 按钮主题适配 */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

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

.btn-secondary {
    background-color: var(--button-bg, #6c757d);
    border-color: var(--button-bg, #6c757d);
}

.btn-secondary:hover {
    background-color: var(--button-hover, #5a6268);
    border-color: var(--button-hover, #5a6268);
}

/* 表单元素主题适配 */
.form-control, .form-select {
    background-color: var(--input-bg, #ffffff);
    border-color: var(--border-color, #dee2e6);
    color: var(--text-color, var(--dark-color));
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(var(--primary-color), 0.25);
}

/* 模态框主题适配 */
.modal-content {
    background-color: var(--modal-bg, #ffffff);
    color: var(--text-color, var(--dark-color));
    border-color: var(--border-color, #dee2e6);
}

/* 卡片样式增强 - 与header.php保持一致 */
.card {
    border: none;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    background-color: var(--card-bg, #ffffff);
    border-color: var(--border-color, #dee2e6);
    color: var(--text-color, var(--dark-color));
    position: relative;
    transform-style: preserve-3d;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 16px;
    padding: 2px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color), var(--success-color));
    -webkit-mask: 
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    transform: rotate(30deg);
    transition: all 0.6s ease;
    opacity: 0;
}

.card:hover {
    transform: translateY(-8px) scale(1.02) rotateY(5deg);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.card:hover::before {
    opacity: 1;
}

.card:hover::after {
    opacity: 1;
    transform: rotate(45deg) translate(50%, 50%);
}

/* 卡片内容层 */
.card-body, .card-header, .card-footer {
    position: relative;
    z-index: 1;
}

/* 卡片内部元素动画 */
.card:hover .card-title {
    color: var(--primary-color);
    transition: color 0.3s ease;
}

.card:hover .card-text {
    transform: translateY(-2px);
    transition: transform 0.3s ease;
}

/* 按钮样式增强 - 与header.php保持一致 */
.btn {
    border-radius: 12px;
    padding: 10px 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

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

/* 主要按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

/* 成功按钮样式 */
.btn-success {
    background: linear-gradient(135deg, #11998e, #38ef7d);
    border: none;
}

/* 表单控件样式 - 与header.php保持一致 */
.form-control, 
.form-select, 
.form-textarea {
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 12px 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 14px;
    outline: none;
    position: relative;
    z-index: 2;
    background: white;
}

.form-control:focus, 
.form-select:focus, 
.form-textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
    animation: inputFocus 0.3s ease;
}

/* 输入框聚焦动画 */
@keyframes inputFocus {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* 导航链接样式 - 与header.php保持一致 */
.nav-link {
    color: rgba(255, 255, 255, 0.8);
    border-radius: 8px;
    margin: 5px 10px;
    padding: 10px 15px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.05));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    transform: translateX(8px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.nav-link:hover::before {
    opacity: 1;
}

.nav-link.active {
    background: rgba(255, 255, 255, 0.25);
    color: white;
    font-weight: 500;
    border-left: 4px solid var(--success-color);
}

/* 侧边栏样式 - 与header.php保持一致 */
/* 主内容区样式 - 与header.php保持一致 */
/* 响应式设计 - 移动端布局在header.php中处理 */

/* 特殊效果 */
/* 图标容器样式增强 */
.icon-container {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(67, 97, 238, 0.3);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.icon-container:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 35px rgba(67, 97, 238, 0.4);
}

/* 快捷操作卡片样式 */
.action-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.action-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color), var(--success-color));
    transform: scaleX(0);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.action-card:hover::after {
    transform: scaleX(1);
}

.action-card:hover .icon-container {
    transform: scale(1.1) rotate(5deg);
}

/* 日记卡片样式增强 */
.diary-card {
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 4px solid var(--primary-color);
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
    position: relative;
    overflow: hidden;
}

.diary-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 0;
    height: 0;
    border-top: 200px solid rgba(67, 97, 238, 0.05);
    border-left: 200px solid transparent;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.diary-card:hover {
    border-left: 4px solid var(--accent-color);
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 15px 35px rgba(0,0,0,0.12);
}

.diary-card:hover::before {
    border-top-width: 300px;
    border-left-width: 300px;
}

.diary-card .card-title a {
    transition: all 0.3s ease;
    color: var(--dark-color);
    position: relative;
}

.diary-card .card-title a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.diary-card:hover .card-title a {
    color: var(--primary-color);
}

.diary-card:hover .card-title a::after {
    width: 100%;
}

/* 统计卡片样式 */
.stats-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 50%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1);
}

.stats-card:hover::before {
    transform: scale(1.2);
}

.stats-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
}

/* 分类页面卡片标题样式 */
body .page-header + .row .col-md-4 .card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    color: #ffffff !important;
}

body .page-header + .row .col-md-8 .card-header {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%) !important;
    color: #ffffff !important;
}

/* 分类卡片样式 */
.category-card {
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 4px solid var(--primary-color);
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
    position: relative;
    overflow: hidden;
}

.category-card:hover {
    border-left-color: var(--accent-color);
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 15px 35px rgba(0,0,0,0.12);
}

/* 卡片头部和底部样式增强 */
.card-header {
    border: none;
    background: linear-gradient(135deg, var(--light-color), #ffffff);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding: 20px 24px;
    transition: all 0.3s ease;
}

.card:hover .card-header {
    background: linear-gradient(135deg, #ffffff, var(--light-color));
}

.card-footer {
    border: none;
    background: linear-gradient(135deg, #ffffff, var(--light-color));
    border-top: 1px solid rgba(0,0,0,0.05);
    padding: 20px 24px;
    transition: all 0.3s ease;
}

.card:hover .card-footer {
    background: linear-gradient(135deg, var(--light-color), #ffffff);
}

/* 卡片内容过渡效果 */
.card-body {
    transition: all 0.3s ease;
}

.card:hover .card-body {
    transform: translateY(-2px);
}

/* 标签样式增强 */
.badge {
    border-radius: 20px;
    padding: 5px 12px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), rgba(255,255,255,0.05));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    cursor: pointer;
}

.badge:hover::before {
    opacity: 1;
}

/* 标签颜色变体 */
.badge-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.badge-secondary {
    background: linear-gradient(135deg, var(--dark-color), #6c757d);
    color: white;
}

.badge-success {
    background: linear-gradient(135deg, var(--success-color), #20c997);
    color: white;
}

.badge-info {
    background: linear-gradient(135deg, #17a2b8, #0dcaf0);
    color: white;
}

/* 拖拽相关样式 */
[data-card-container="true"] {
    min-height: 200px;
    padding: 15px;
    border-radius: 12px;
    transition: all 0.3s ease;
}

[data-card-container="true"].drag-over {
    background: rgba(67, 97, 238, 0.1);
    border: 2px dashed var(--primary-color);
    box-shadow: 0 0 20px rgba(67, 97, 238, 0.2);
}

[draggable="true"] {
    cursor: grab;
    transition: all 0.3s ease;
}

[draggable="true"]:active {
    cursor: grabbing;
}

[draggable="true"].dragging {
    opacity: 0.5;
    transform: scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    z-index: 1000;
}

/* 卡片容器样式 */
.card-container {
    min-height: 100px;
    transition: all 0.3s ease;
}

.badge-warning {
    background: linear-gradient(135deg, #ffc107, #fd7e14);
    color: white;
}

.badge-danger {
    background: linear-gradient(135deg, #dc3545, #e74c3c);
    color: white;
}

/* 分页样式增强 */
.pagination {
    --bs-pagination-active-bg: var(--primary-color);
    --bs-pagination-active-border-color: var(--accent-color);
    --bs-pagination-hover-bg: var(--light-color);
    --bs-pagination-hover-color: var(--primary-color);
    --bs-pagination-border-radius: 10px;
}

.pagination li {
    margin: 0 4px;
}

.pagination a,
.pagination span {
    border-radius: 8px;
    padding: 8px 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
    background: white;
    color: var(--dark-color);
}

.pagination a:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 15px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
    background: linear-gradient(135deg, white, var(--light-color));
}

.pagination .page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-color: var(--accent-color);
    box-shadow: 0 4px 12px rgba(67, 97, 238, 0.3);
    transform: translateY(-2px);
}

.pagination .page-item.disabled .page-link {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination .page-item:first-child .page-link,
.pagination .page-item:last-child .page-link {
    border-radius: 8px;
}

/* 警告框样式 */
.alert {
    border-radius: 8px;
    border: none;
}

/* 表格样式增强 */
.table {
    border-collapse: separate;
    border-spacing: 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    border-radius: 12px;
    overflow: hidden;
    background: white;
}

.table th {
    border-top: none;
    border-bottom: 2px solid #dee2e6;
    background: linear-gradient(135deg, var(--light-color), #ffffff);
    padding: 16px 20px;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
    font-weight: 600;
    color: var(--dark-color);
    transition: all 0.3s ease;
}

.table td {
    border-top: 1px solid #f0f2f5;
    padding: 14px 20px;
    transition: all 0.3s ease;
    position: relative;
}

/* 表格行悬停效果 */
.table tbody tr {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.table tbody tr:hover {
    background: linear-gradient(135deg, #ffffff, #f8f9ff);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

/* 表格行动画 */
.table tbody tr::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.table tbody tr:hover::before {
    transform: scaleY(1);
}

/* 表格响应式优化 */
.table-responsive {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

/* 模态框样式 */
.modal-content {
    border-radius: 15px;
    border: none;
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 页面过渡和交互动画优化 */
body {
    overflow-x: hidden;
    animation: pageFadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 全局页面过渡 - 替代.page-transition类，直接应用于body */
@keyframes pageFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 页面加载时的渐显遮罩效果 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    z-index: 99999;
    animation: loadingFadeOut 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    animation-delay: 0.5s;
}

@keyframes loadingFadeOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(1.2);
        visibility: hidden;
    }
}

/* 内容区块过渡动画 */
.section-transition {
    animation: sectionFadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes sectionFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 加载指示器 */
.loading-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color), var(--success-color));
    z-index: 9999;
    animation: loadingProgress 2s ease-in-out;
}

@keyframes loadingProgress {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

/* 呼吸动画 */
.breathing {
    animation: breathing 3s ease-in-out infinite;
}

@keyframes breathing {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* 心跳动画 */
.heartbeat {
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0% { transform: scale(1); }
    14% { transform: scale(1.3); }
    28% { transform: scale(1); }
    42% { transform: scale(1.3); }
    70% { transform: scale(1); }
}

/* 增强的元素进入视口动画 */
.animate-on-scroll {
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.from-bottom {
    transform: translateY(50px);
}

.animate-on-scroll.from-left {
    transform: translateX(-50px);
}

.animate-on-scroll.from-right {
    transform: translateX(50px);
}

.animate-on-scroll.bounce-in {
    transform: scale(0.5);
    animation-timing-function: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0) translateX(0) scale(1) rotate(0deg);
}

/* 交错动画延迟 */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 滚动指示器 */
.progress-scroll {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    z-index: 9999;
    transition: width 0.1s ease;
}

/* 模态框动画优化 */
.modal {
    transition: opacity 0.3s ease;
}

.modal.show {
    opacity: 1;
}

.modal-backdrop.show {
    opacity: 0.8;
}

.modal-content {
    transform: translateY(-50px) scale(0.9);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal.show .modal-content {
    transform: translateY(0) scale(1);
}

/* 警报框动画 */
.alert {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-100%);
    opacity: 0;
}

.alert.show {
    transform: translateX(0);
    opacity: 1;
}

/* 下拉菜单动画 */
.dropdown-menu {
    transform: translateY(10px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dropdown-menu.show {
    transform: translateY(0);
    opacity: 1;
}

/* 按钮点击波纹效果 */
.btn {
    overflow: hidden;
    position: relative;
}

/* 响应式设计 - 移动设备优化 */
@media (max-width: 768px) {
    /* 移动端卡片布局 */
    .card {
        margin-bottom: 16px;
        border-radius: 12px;
    }
    
    /* 移动端按钮 */
    .btn {
        padding: 12px 20px;
        font-size: 16px;
        min-height: 44px;
    }
    
    /* 移动端表单 */
    .form-container {
        padding: 15px;
    }
    
    /* 移动端表格 */
    .table-responsive {
        font-size: 13px;
    }
    
    /* 移动端导航链接 */
    .nav-link {
        padding: 8px 12px;
        margin: 3px 5px;
    }
    
    /* 移动端图标容器 */
    .icon-container {
        width: 60px;
        height: 60px;
    }
    
    /* 移动端日记卡片 */
    .diary-card {
        margin-bottom: 16px;
    }
    
    /* 移动端统计卡片 */
    .stats-card {
        margin-bottom: 16px;
    }
    
    /* 移动端分类卡片 */
    .category-card {
        margin-bottom: 16px;
    }
}

/* 响应式设计 - 平板设备优化 */
@media (min-width: 769px) and (max-width: 1024px) {
    /* 平板卡片布局 */
    .card {
        margin-bottom: 20px;
    }
    
    /* 平板表单 */
    .form-container {
        padding: 25px;
    }
    
    /* 平板表格 */
    .table-responsive {
        font-size: 14px;
    }
}

/* 响应式设计 - 大屏幕设备优化 */
@media (min-width: 1200px) {
    /* 大屏幕卡片布局 */
    .card {
        margin-bottom: 24px;
    }
    
    /* 大屏幕表单 */
    .form-container {
        padding: 30px;
    }
    
    /* 大屏幕表格 */
    .table-responsive {
        font-size: 15px;
    }
}

/* 文本动画效果 */
/* 打字机效果 */
.typewriter {
    overflow: hidden;
    border-right: 2px solid var(--primary-color);
    white-space: nowrap;
    margin: 0 auto;
    animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: var(--primary-color); }
}

/* 渐变文本 */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

/* 悬停文字放大效果 */
.hover-scale-text:hover {
    transform: scale(1.05);
    transition: transform 0.3s ease;
}

/* 文字阴影效果 */
.text-shadow {
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

/* 背景装饰元素 */
/* 页面背景装饰 */
body::after {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(67, 97, 238, 0.05) 0%, transparent 70%),
                radial-gradient(circle, rgba(23, 162, 184, 0.05) 50%, transparent 70%);
    animation: float 20s ease-in-out infinite;
    z-index: -1;
}

@keyframes float {
    0%, 100% { transform: rotate(0deg) translate(0, 0); }
    25% { transform: rotate(90deg) translate(10%, 10%); }
    50% { transform: rotate(180deg) translate(5%, 5%); }
    75% { transform: rotate(270deg) translate(-10%, 10%); }
}

/* 主内容区装饰 */
.main-content-container::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    opacity: 0.02;
    border-radius: 50%;
    transform: translate(50%, -50%);
    z-index: -1;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::after {
    width: 300px;
    height: 300px;
}