/* ========== 字体定义 ========== */
@font-face {
    font-family: 'Alimama FangYuanTi';
    src: url('AlimamaFangYuanTiVF-Thin-2.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* ========== 基础变量（亮色主题） ========== */
:root {
    --bg-body: #fffcf7;
    --text-primary: #2c2418;
    --text-secondary: #7a6852;
    --card-bg: white;
    --card-border: #f0e0ce;
    --tag-bg: #f9ede1;
    --tag-color: #b47c48;
    --stats-color: #8b735b;
    --footer-color: #b8a48c;
    --btn-primary: #d6a16e;
    --btn-primary-hover: #b47c48;
    --category-btn-hover: #f5e3cf;
    --category-btn-active: #d6a16e;
    --icon-color: #d6a16e;
    --shadow-color: rgba(0,0,0,0.05);
    --border-light: #f0e0ce;
    
    --card-min-width: 280px;
    --card-padding: 1.2rem;
    --card-title-size: 1.2rem;
    --card-desc-size: 0.85rem;
}

/* ========== 暗色主题 ========== */
body.dark {
    --bg-body: #1a1a2e;
    --text-primary: #ececec;
    --text-secondary: #b0b0b0;
    --card-bg: #252540;
    --card-border: #3a3a55;
    --tag-bg: #3a2a2a;
    --tag-color: #e2b48c;
    --stats-color: #a0a0b0;
    --footer-color: #6a6a7a;
    --btn-primary: #b47c48;
    --btn-primary-hover: #d6a16e;
    --category-btn-hover: #3a3a55;
    --category-btn-active: #b47c48;
    --icon-color: #e2b48c;
    --shadow-color: rgba(0,0,0,0.2);
    --border-light: #3a3a55;
}

/* ========== 全局重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Alimama FangYuanTi', 'Inter', sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    padding: 2rem 1.5rem;
    min-height: 100vh;
    transition: background 0.2s, color 0.2s;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(#e8d9cc 1.2px, transparent 1.2px);
    background-size: 28px 28px;
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
}
body.dark::before {
    background-image: radial-gradient(#5a4a38 1.2px, transparent 1.2px);
    opacity: 0.15;
}

.app-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

/* ========== 工具栏 ========== */
.toolbar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-light);
    flex-wrap: wrap;
}
.theme-toggle {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 40px;
    padding: 0.3rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    transition: 0.2s;
}
.theme-toggle:hover {
    background: var(--category-btn-hover);
}
.switch-category-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 40px;
    padding: 0.3rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    transition: 0.2s;
    color: var(--text-primary);
}
.switch-category-btn:hover {
    background: var(--category-btn-hover);
    border-color: var(--btn-primary);
}
.zoom-controls {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 40px;
    padding: 0.3rem 1rem;
}
.zoom-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}
#zoomSlider {
    width: 140px;
    height: 4px;
    -webkit-appearance: none;
    background: var(--btn-primary);
    border-radius: 4px;
    outline: none;
}
#zoomSlider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--btn-primary);
    cursor: pointer;
    border: none;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
#zoomSlider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}
#zoomPercent {
    font-size: 0.8rem;
    min-width: 45px;
    font-weight: 500;
    color: var(--text-primary);
}
.zoom-controls button {
    background: transparent;
    border: 1px solid var(--card-border);
    border-radius: 30px;
    padding: 0.2rem 0.8rem;
    font-size: 0.7rem;
    cursor: pointer;
    color: var(--text-primary);
    transition: 0.2s;
}
.zoom-controls button:hover {
    background: var(--category-btn-hover);
    border-color: var(--btn-primary);
}
/* 每页数量选择器（自定义输入 + 快捷按钮） */
.page-size-selector {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 40px;
    padding: 0.3rem 1rem;
}
.page-size-input {
    width: 70px;
    background: var(--bg-body);
    border: 1px solid var(--card-border);
    border-radius: 30px;
    padding: 0.2rem 0.6rem;
    font-size: 0.8rem;
    text-align: center;
    color: var(--text-primary);
    outline: none;
    /* 隐藏 number 输入框的上下箭头 */
    -moz-appearance: textfield;
}
.page-size-input::-webkit-inner-spin-button,
.page-size-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.page-size-input:focus {
    border-color: var(--btn-primary);
}
.page-size-unit {
    font-size: 0.8rem;
    color: var(--text-secondary);
}
.page-size-presets {
    display: flex;
    gap: 0.4rem;
}
.page-size-preset {
    background: var(--bg-body);
    border: 1px solid var(--card-border);
    border-radius: 30px;
    padding: 0.2rem 0.6rem;
    font-size: 0.7rem;
    cursor: pointer;
    transition: 0.2s;
    color: var(--text-secondary);
}
.page-size-preset:hover {
    background: var(--category-btn-hover);
    border-color: var(--btn-primary);
    color: var(--text-primary);
}

/* ========== 头部 ========== */
header {
    text-align: center;
    margin-bottom: 2rem;
}
.logo-icon {
    font-size: 3rem;
    color: var(--icon-color);
    background: var(--card-bg);
    width: 90px;
    height: 90px;
    line-height: 90px;
    border-radius: 50%;
    margin: 0 auto 1rem;
    display: inline-block;
    box-shadow: 0 8px 18px var(--shadow-color);
}
h1 {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.3px;
    background: linear-gradient(135deg, #b97f4b, #e2b48c);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
}
.subhead {
    color: var(--text-secondary);
    margin-top: 0.3rem;
    font-size: 0.95rem;
}

/* ========== 搜索栏 ========== */
.search-bar {
    display: flex;
    align-items: center;
    max-width: 500px;
    margin: 0 auto 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 60px;
    padding: 0.5rem 1rem;
    transition: 0.2s;
}
.search-bar i {
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.search-bar input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.5rem 0.8rem;
    font-size: 0.9rem;
    outline: none;
    color: var(--text-primary);
}
.search-bar input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}
.clear-search {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.8rem;
    padding: 0 0.3rem;
    opacity: 0.6;
    transition: 0.2s;
}
.clear-search:hover {
    opacity: 1;
    color: var(--btn-primary);
}

/* ========== 分类栏 ========== */
.category-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.8rem;
    margin: 2rem 0 1.5rem;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 1rem;
}
.category-btn {
    background: transparent;
    border: 1px solid var(--card-border);
    padding: 0.5rem 1.2rem;
    border-radius: 40px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: 0.2s;
    color: var(--text-secondary);
}
.category-btn:hover {
    background: var(--category-btn-hover);
    border-color: var(--btn-primary);
}
.category-btn.active {
    background: var(--category-btn-active);
    border-color: var(--category-btn-active);
    color: white;
    box-shadow: 0 2px 8px rgba(214,161,110,0.3);
}

/* ========== 标签筛选栏 ========== */
.tags-filter, .platforms-filter {
    margin: 1rem auto;
    max-width: 900px;
    background: var(--card-bg);
    border-radius: 28px;
    padding: 1rem 1.2rem;
    border: 1px solid var(--card-border);
}
.tags-title, .platforms-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.tags-list, .platforms-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 0.8rem;
}
.tag-filter-btn, .platform-filter-btn {
    background: var(--tag-bg);
    border: none;
    padding: 0.3rem 0.9rem;
    border-radius: 40px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: 0.2s;
    color: var(--tag-color);
}
.tag-filter-btn:hover, .platform-filter-btn:hover {
    background: var(--btn-primary);
    color: white;
}
.tag-filter-btn.active, .platform-filter-btn.active {
    background: var(--btn-primary);
    color: white;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.clear-tags-btn, .clear-platforms-btn {
    font-size: 0.7rem;
    text-align: right;
    cursor: pointer;
    color: var(--text-secondary);
    display: inline-block;
    margin-top: 0.2rem;
    opacity: 0.7;
    transition: 0.2s;
}
.clear-tags-btn:hover, .clear-platforms-btn:hover {
    opacity: 1;
    color: var(--btn-primary);
}

/* ========== 统计栏 ========== */
.stats-bar {
    text-align: center;
    font-size: 0.85rem;
    color: var(--stats-color);
    margin-bottom: 1.8rem;
}

/* ========== 资源网格 ========== */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(var(--card-min-width), 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

/* ========== 卡片样式 ========== */
.resource-card {
    background: var(--card-bg);
    border-radius: 24px;
    padding: var(--card-padding);
    border: 1px solid var(--card-border);
    position: relative;
    z-index: 1;
    cursor: default;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.resource-card:hover {
    border-color: var(--btn-primary);
    box-shadow: 0 12px 24px -12px var(--shadow-color);
    transform: translateY(-4px);
    z-index: 9999;
}
.card-fixed {
    text-align: center;
}
.card-icon {
    font-size: calc(var(--card-title-size) * 1.8);
    color: var(--icon-color);
    margin-bottom: 0.8rem;
}
.card-icon img {
    width: calc(var(--card-title-size) * 1.8);
    height: calc(var(--card-title-size) * 1.8);
    object-fit: contain;
}
.resource-card h3 {
    font-size: var(--card-title-size);
    font-weight: 600;
    margin: 0;
    word-break: break-word;
    overflow-wrap: break-word;
}
.card-expandable {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--card-bg);
    border-radius: 24px;
    padding: var(--card-padding);
    border: 1px solid var(--btn-primary);
    box-shadow: 0 12px 28px rgba(0,0,0,0.2);
    z-index: 10000;
    box-sizing: border-box;
    opacity: 0;
    transform: scale(0.96);
    visibility: hidden;
    transition: opacity 0.22s ease, transform 0.25s cubic-bezier(0.2, 0.9, 0.4, 1.1), visibility 0.22s;
}
.resource-card:hover .card-expandable {
    opacity: 1;
    transform: scale(1);
    visibility: visible;
}
.category-tag {
    font-size: calc(var(--card-desc-size) * 0.85);
    background: var(--tag-bg);
    padding: 0.2rem 0.7rem;
    border-radius: 20px;
    color: var(--tag-color);
    display: inline-block;
    margin: 0.5rem 0;
}
.resource-card p {
    font-size: var(--card-desc-size);
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 0.6rem 0;
}
.resource-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin: 0.5rem 0;
}
.resource-tags .tag {
    background: var(--tag-bg);
    font-size: calc(var(--card-desc-size) * 0.7);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    color: var(--tag-color);
}
.platform-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin: 0.5rem 0;
}
.platform-tag {
    background: var(--tag-bg);
    font-size: calc(var(--card-desc-size) * 0.7);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    color: var(--tag-color);
}
.download-btn, .backup-btn, .github-btn, .version-btn {
    border: none;
    padding: 0.5rem;
    border-radius: 40px;
    font-weight: 500;
    cursor: pointer;
    transition: 0.2s;
    margin-top: 0.5rem;
    width: 100%;
    font-size: 0.85rem;
}
.download-btn {
    background: var(--btn-primary);
    color: white;
}
.download-btn:hover {
    background: var(--btn-primary-hover);
}
.backup-btn {
    background: var(--card-bg);
    color: var(--btn-primary);
    border: 1px solid var(--btn-primary);
}
.backup-btn:hover {
    background: var(--btn-primary);
    color: white;
}
.github-btn {
    background: #171515;
    color: white;
}
.github-btn:hover {
    background: #333;
}
.version-btn {
    background: #4a6a8a;
    color: white;
}
.version-btn:hover {
    background: #2c4c6c;
}

/* ========== 分页控件 ========== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}
.page-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 40px;
    padding: 0.3rem 0.8rem;
    font-size: 0.85rem;
    cursor: pointer;
    transition: 0.2s;
    color: var(--text-primary);
}
.page-btn:hover {
    background: var(--category-btn-hover);
    border-color: var(--btn-primary);
}
.page-btn.active {
    background: var(--btn-primary);
    color: white;
    border-color: var(--btn-primary);
}
.page-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========== 底部 ========== */
footer {
    text-align: center;
    font-size: 0.75rem;
    color: var(--footer-color);
    border-top: 1px solid var(--border-light);
    padding-top: 1.8rem;
    margin-top: 1rem;
}

/* ========== 响应式 ========== */
@media (max-width: 700px) {
    body { padding: 1rem; }
    .category-btn { padding: 0.4rem 1rem; font-size: 0.75rem; }
    .toolbar { justify-content: space-between; }
    #zoomSlider { width: 100px; }
    .search-bar { max-width: 90%; }
    .page-size-selector { flex-wrap: wrap; justify-content: center; }
    :root {
        --card-min-width: 240px;
        --card-padding: 1rem;
        --card-title-size: 1.1rem;
        --card-desc-size: 0.8rem;
    }
}

/* ========== 鼠标轨迹 Canvas ========== */
#mouse-trail-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 99999;
}