/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
    min-height: 100%;
}

body.dark-theme {
    background-color: #1a1a1a;
    color: #f0f0f0;
}

/* 页面布局 */
.wrapper {
    min-height: 100%;
    margin-bottom: -82px;
    padding-top: 70px; /* 为固定头部留出空间 */
}

.wrapper:after,
.push {
    content: "";
    display: block;
    height: 82px; /* 与footer高度相同 */
}

@media (max-width: 768px) {
    .wrapper {
        padding-top: 60px; /* 移动端为固定头部留出空间 */
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background: #ffffff;
    color: #333;
    padding: 10px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
}

/* 桌面端头部在移动端隐藏 */
@media (max-width: 768px) {
    header {
        display: none !important;
    }
}

.dark-theme header {
    background: #2c3e50;
    color: #f0f0f0;
}

.filters {
    display: flex;
    align-items: center;
    gap: 20px;
}

.filter-select {
    padding: 10px 40px 10px 15px;
    border-radius: 12px;
    border: 2px solid #e1e5e9;
    background-color: rgba(255, 255, 255, 0.8);
    font-size: 15px;
    font-weight: 500;
    outline: none;
    color: #333;
    box-shadow: 0 4px 6px rgba(50, 50, 93, 0.11), 0 1px 3px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 16px;
    cursor: pointer;
    min-width: 120px;
    backdrop-filter: blur(5px);
}

.filter-select:hover {
    box-shadow: 0 7px 14px rgba(50, 50, 93, 0.15), 0 3px 6px rgba(0, 0, 0, 0.12);
    border-color: #667eea;
    background-color: rgba(255, 255, 255, 0.95);
    transform: translateY(-1px);
}

.filter-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
    background-color: rgba(255, 255, 255, 1);
}

.filter-select option {
    background-color: rgba(255, 255, 255, 0.9);
    color: #333;
    padding: 12px 15px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
    margin: 5px 10px;
}

.dark-theme .filter-select {
    background-color: rgba(44, 62, 80, 0.8);
    color: #f0f0f0;
    border: 2px solid #34495e;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23f0f0f0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    backdrop-filter: blur(5px);
}

.dark-theme .filter-select:hover {
    border-color: #667eea;
    box-shadow: 0 7px 14px rgba(0, 0, 0, 0.25), 0 3px 6px rgba(0, 0, 0, 0.18);
    background-color: rgba(44, 62, 80, 0.95);
}

.dark-theme .filter-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.4);
    background-color: rgba(44, 62, 80, 1);
}

.dark-theme .filter-select option {
    background-color: rgba(44, 62, 80, 0.9);
    color: #f0f0f0;
    border-radius: 8px;
}

.theme-toggle {
    margin-left: auto;
}

#toggle-theme {
    padding: 6px 12px;
    background-color: transparent;
    color: #333;
    border: none;
    border-radius: 6px; /* 4分之1圆角 */
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 18px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.7);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

#toggle-theme:hover {
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.dark-theme #toggle-theme {
    color: #f0f0f0;
    background-color: rgba(255, 255, 255, 0.2);
}

.dark-theme #toggle-theme:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

/* 移动端头部菜单样式 */
.mobile-header {
    display: none;
}

.mobile-menu-overlay {
    display: none;
}

.mobile-menu {
    display: none;
}

@media (max-width: 768px) {
    .mobile-header {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        background: #ffffff;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        z-index: 100;
        padding: 5px 0;
        height: 60px;
    }
    
    .dark-theme .mobile-header {
        background: #2c3e50;
        color: #f0f0f0;
    }
    
    .mobile-header-controls {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        padding: 0 15px;
    }
    
    .menu-toggle-btn {
        background: rgba(0, 0, 0, 0.1);
        border: none;
        border-radius: 50%;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        cursor: pointer;
        z-index: 101;
    }
    
    .dark-theme .menu-toggle-btn {
        background: rgba(255, 255, 255, 0.2);
        color: white;
    }
    
    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 100;
        display: none;
    }
    
    .mobile-menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: white;
        z-index: 101;
        padding: 20px;
        overflow-y: auto;
        transform: translateY(-100%);
        transition: transform 0.3s ease;
    }
    
    .dark-theme .mobile-menu {
        background: #2c3e50;
        color: #f0f0f0;
    }
    
    .mobile-menu.open {
        transform: translateY(0);
        display: block;
    }
    
    .mobile-menu-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 20px;
        padding-bottom: 10px;
        border-bottom: 1px solid #eee;
    }
    
    .dark-theme .mobile-menu-header {
        border-bottom: 1px solid #4a5568;
    }
    
    .mobile-menu-close {
        background: none;
        border: none;
        font-size: 24px;
        cursor: pointer;
        color: #333;
    }
    
    .dark-theme .mobile-menu-close {
        color: #f0f0f0;
    }
    
    .mobile-menu-section {
        margin-bottom: 30px;
    }
    
    .mobile-menu-section h3 {
        margin-bottom: 15px;
        font-size: 18px;
    }
    
    .mobile-menu-options {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    
    .mobile-menu-option {
        padding: 12px;
        background: #f8f9fa;
        border-radius: 8px;
        text-align: center;
        cursor: pointer;
        transition: all 0.3s ease;
    }
    
    .dark-theme .mobile-menu-option {
        background: #4a5568;
    }
    
    .mobile-menu-option.selected,
    .mobile-menu-option:hover {
        background: #667eea;
        color: white;
    }
    
    .dark-theme .mobile-menu-option.selected,
    .dark-theme .mobile-menu-option:hover {
        background: #667eea;
    }
}

/* 移动端主题切换按钮 */
#mobile-toggle-theme {
    display: none;
}

@media (max-width: 768px) {
    #mobile-toggle-theme {
        display: flex;
        padding: 6px 12px;
        background-color: transparent;
        color: #333;
        border: none;
        border-radius: 6px;
        cursor: pointer;
        transition: all 0.3s ease;
        font-size: 18px;
        width: 40px;
        height: 40px;
        align-items: center;
        justify-content: center;
        background-color: rgba(0, 0, 0, 0.1);
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    
    .dark-theme #mobile-toggle-theme {
        color: #f0f0f0;
        background-color: rgba(255, 255, 255, 0.2);
    }
    
    #mobile-toggle-theme:hover {
        background-color: rgba(0, 0, 0, 0.2);
        box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    }
    
    .dark-theme #mobile-toggle-theme:hover {
        background-color: rgba(255, 255, 255, 0.3);
    }
}

/* 分类筛选 */
.category-filter {
    background: transparent;
    margin: 10px 0;
    padding: 0;
    box-shadow: none;
    flex: 1;
}

.category-filter ul {
    display: flex;
    list-style: none;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: center;
}

.category-filter li {
    padding: 8px 16px;
    margin: 0 8px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
    background-color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    color: #666;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    font-weight: 500;
}

.category-filter li:hover:not(.active) {
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.category-filter li.active {
    background: #e9ecef;
    color: #333;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    font-weight: 600;
}

.dark-theme .category-filter li {
    background-color: rgba(255, 255, 255, 0.15);
    color: #ccc;
}

.dark-theme .category-filter li:hover:not(.active) {
    background: rgba(255, 255, 255, 0.25);
    color: #fff;
    box-shadow: 0 4px 8px rgba(0,0,0,0.25);
}

.dark-theme .category-filter li.active {
    background: #4a5568;
    color: #fff;
    box-shadow: 0 4px 8px rgba(0,0,0,0.25);
}

/* 图片画廊 */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.thumbnail {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    aspect-ratio: 16/9;
    background-color: transparent;
    display: flex;
    flex-direction: column;
    cursor: pointer; /* 鼠标样式变为手指 */
}

.thumbnail:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.thumbnail-actions {
    position: absolute;
    bottom: 10px;
    right: 10px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.thumbnail:hover .thumbnail-actions {
    transform: translateX(0);
}

.action-btn {
    background: rgba(0, 0, 0, 0.5);
    border: none;
    color: white;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%; /* 圆形按钮 */
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: background-color 0.3s ease, transform 0.2s ease;
    position: relative;
}

.action-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

.action-btn span {
    pointer-events: none;
}

.view-btn span::before {
    content: "👁";
}

.download-btn span::before {
    content: "⬇";
}

.action-btn::after {
    content: attr(data-title);
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    margin-right: 10px;
}

.action-btn:hover::after {
    opacity: 1;
}

.action-btn::before {
    content: "";
    position: absolute;
    right: -5px;
    top: 50%;
    transform: translateY(-50%);
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 5px solid rgba(0, 0, 0, 0.8);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.action-btn:hover::before {
    opacity: 1;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 30px 0;
    gap: 15px;
}

.pagination button {
    padding: 10px 20px;
    background: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
    color: #333;
    border: none;
    border-radius: 6px; /* 4分之1圆角 */
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    background-color: rgba(161, 196, 253, 0.7);
}

.pagination button:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    background-color: rgba(161, 196, 253, 0.9);
}

.pagination button:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    background-color: rgba(204, 204, 204, 0.7);
}

#page-info {
    font-weight: bold;
    color: #555;
}

.dark-theme #page-info {
    color: #ccc;
}

.dark-theme .pagination button {
    background: linear-gradient(135deg, #2c3e50 0%, #4a4a4a 100%);
    color: #f0f0f0;
    background-color: rgba(44, 62, 80, 0.7);
}

.dark-theme .pagination button:hover {
    background-color: rgba(44, 62, 80, 0.9);
}

.dark-theme .pagination button:disabled {
    background-color: rgba(204, 204, 204, 0.7);
}

/* 模态框 */
.modal-content {
    position: relative;
    margin: auto;
    padding: 20px;
    width: 90%;
    max-width: 1000px;
    top: 50%;
    transform: translateY(-50%);
    text-align: center;
}

.image-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    max-height: 70vh;
    overflow: hidden;
}

.modal-content img {
    max-width: calc(100% - 120px); /* 为两侧按钮留出空间 */
    max-height: 70vh;
    border-radius: 5px;
    display: block;
    margin: 0 auto;
}

.controls-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
    margin: 15px 0;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px; /* 4分之1圆角 */
    backdrop-filter: blur(5px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.controls-row label {
    color: white;
    font-size: 14px;
    white-space: nowrap;
}

.controls-row select {
    padding: 5px 10px;
    border-radius: 6px; /* 4分之1圆角 */
    border: 1px solid #ccc;
    background-color: white;
    min-width: 120px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.spacer {
    flex: 1;
}

.controls-row button {
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    font-size: 14px;
}

.controls-row button:hover {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.dark-theme .controls-row {
    background: rgba(255, 255, 255, 0.1);
}

.dark-theme .controls-row label {
    color: white;
}

.side-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 6px; /* 4分之1圆角 */
    z-index: 1001;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.side-nav-btn:hover {
    background: rgba(0, 0, 0, 0.7);
    transform: translateY(-50%) scale(1.1);
}

#prev-image {
    left: 10px;
}

#next-image {
    right: 10px;
}

.dark-theme .side-nav-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.dark-theme .side-nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
    overflow-y: auto;
}

.close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
}

.close:hover {
    color: #bbb;
}

.modal-controls {
    margin: 15px 0;
}

.crop-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
    margin: 15px 0;
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.crop-controls label {
    color: white;
    font-size: 14px;
    white-space: nowrap;
}

.crop-controls select {
    padding: 5px 10px;
    border-radius: 4px;
    border: 1px solid #ccc;
    background-color: white;
    min-width: 120px;
}

.crop-controls button {
    padding: 5px 15px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.crop-controls button:hover {
    background: rgba(255, 255, 255, 0.3);
}

.dark-theme .crop-controls {
    background: rgba(255, 255, 255, 0.1);
}

.dark-theme .crop-controls select {
    background-color: #333;
    color: white;
    border: 1px solid #555;
}

.dark-theme .crop-controls label {
    color: white;
}

.modal-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.nav-btn {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px; /* 4分之1圆角 */
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 18px;
    min-width: 50px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.dark-theme .nav-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.dark-theme .nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.dark-theme .modal-controls {
    color: white;
}

.dark-theme .crop-controls select {
    background-color: #333;
    color: white;
    border: 1px solid #555;
}

.dark-theme .crop-controls label {
    color: white;
}

/* Cropper.js 样式覆盖 */
.cropper-view-box,
.cropper-face {
    border-radius: 5px;
}

.cropper-modal {
    background-color: rgba(0, 0, 0, 0.7);
}

/* 返回顶部按钮 */
#back-to-top {
    display: none;
    position: fixed;
    bottom: 100px;
    right: 20px;
    z-index: 99;
    font-size: 18px;
    border: none;
    outline: none;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    cursor: pointer;
    padding: 15px;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    transition: all 0.3s ease;
}

#back-to-top:hover {
    background-color: rgba(0, 0, 0, 0.8);
}

.dark-theme #back-to-top {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
}

.dark-theme #back-to-top:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

/* 底部 */
footer {
    background: #e9ecef;
    color: #333;
    text-align: center;
    height: auto;
    padding: 20px 0;
}

footer .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: auto;
    display: block;
}

footer p {
    margin: 5px 0;
    font-size: 14px;
}

footer a {
    color: #666;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.dark-theme footer {
    background: #333;
    color: white;
}

.dark-theme footer a {
    color: #ccc;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .gallery {
        grid-template-columns: 1fr; /* 手机端一行只显示一张图片 */
        gap: 15px;
        margin-top: 70px; /* 为移动端头部增加间距 */
    }
    
    /* 隐藏桌面端筛选器 */
    .filters {
        display: none;
    }
    
    .category-filter ul {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 5px;
    }
    
    .category-filter li {
        padding: 6px 12px;
        margin: 0 5px;
        font-size: 0.85rem;
        white-space: nowrap;
    }
    
    .modal-content {
        width: 95%;
        padding: 10px;
    }
    
    .close {
        right: 15px;
        font-size: 30px;
    }
    
    .wrapper {
        margin-bottom: -60px; /* 减少footer高度的负值 */
    }
    
    .wrapper:after,
    .push {
        height: 60px; /* 减少与footer高度相同的空白区域 */
    }
    
    footer {
        height: 60px;
    }
}