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

:root {
    --bg: #f0f2f5;
    --surface: #ffffff;
    --primary: #2a7de1;
    --primary-hover: #1a5fb4;
    --text: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --topbar-height: 56px;
    --sidebar-width: 220px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    padding-top: var(--topbar-height);
}

/* ===== 顶栏 ===== */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--topbar-height);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    display: flex;
    align-items: center;
    padding: 0 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.topbar-inner {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    cursor: pointer;
    white-space: nowrap;
    letter-spacing: -0.5px;
}

.logo i {
    margin-right: 6px;
}

.topbar-actions {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* ===== 主体 ===== */
.main-container {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px 20px 20px 20px;
    gap: 20px;
    min-height: calc(100vh - var(--topbar-height));
}

/* ===== 侧栏 ===== */
.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    position: sticky;
    top: calc(var(--topbar-height) + 16px);
    align-self: flex-start;
    background: var(--surface);
    border-radius: var(--radius);
    padding: 12px 0;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - var(--topbar-height) - 32px);
    overflow-y: auto;
}

.category-nav {
    flex: 1;
    padding-bottom: 8px;
}

.cat-item {
    padding: 8px 18px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    border-left: 3px solid transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.cat-item:hover {
    background: var(--bg);
    color: var(--text);
}

.cat-item.active {
    background: rgba(42, 125, 225, 0.06);
    color: var(--primary);
    border-left-color: var(--primary);
    font-weight: 500;
}

.cat-item i {
    width: 18px;
    text-align: center;
}

.sidebar-footer {
    border-top: 1px solid var(--border);
    padding: 12px 16px;
    margin-top: 4px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.filter-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 4px;
}

.filter-group label i {
    margin-right: 4px;
}

/* ===== 自定义下拉 ===== */
.custom-select-wrapper {
    position: relative;
    width: 100%;
}

.custom-select-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 7px 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    cursor: pointer;
    color: var(--text);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
    text-align: left;
}

.custom-select-toggle:hover {
    border-color: var(--primary);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.custom-select-toggle.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(42, 125, 225, 0.12);
    transform: translateY(-1px);
}

.custom-select-toggle .arrow {
    font-size: 10px;
    transition: transform 0.2s ease;
    color: var(--text-secondary);
    flex-shrink: 0;
    margin-left: 8px;
}

.custom-select-toggle.active .arrow {
    transform: rotate(180deg);
}

.custom-select-toggle .selected-text {
    display: flex;
    align-items: center;
    gap: 6px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.custom-select-toggle .selected-text i {
    flex-shrink: 0;
}

.custom-select-dropdown {
    position: fixed;
    top: auto;
    left: auto;
    right: auto;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    padding: 4px 0;
    display: none;
    z-index: 2000;
    max-height: 300px;
    overflow-y: auto;
    overflow-x: visible;
    animation: fadeUp 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: top left;
}

.custom-select-dropdown.open {
    display: block;
    animation: fadeUp 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.custom-select-dropdown.closing {
    animation: fadeDown 0.2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes fadeDown {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(12px);
    }
}

.custom-select-dropdown .custom-select-item {
    padding: 7px 14px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.2s cubic-bezier(0.4, 0, 0.2, 1), color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
}

.custom-select-dropdown .custom-select-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary);
    transform: scaleY(0);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 0 4px 4px 0;
}

.custom-select-dropdown .custom-select-item:hover {
    background: var(--bg);
    color: var(--text);
    transform: translateX(4px);
}

.custom-select-dropdown .custom-select-item:hover::before {
    transform: scaleY(1);
}

.custom-select-dropdown .custom-select-item.active {
    background: rgba(42, 125, 225, 0.06);
    color: var(--primary);
    font-weight: 500;
    transform: translateX(4px);
}

.custom-select-dropdown .custom-select-item.active::before {
    transform: scaleY(1);
}

.custom-select-dropdown .custom-select-item i {
    width: 18px;
    text-align: center;
    flex-shrink: 0;
}

.filter-select .custom-select-toggle {
    background: var(--bg);
    font-size: 13px;
    padding: 6px 10px;
}

.filter-select .custom-select-dropdown .custom-select-item {
    font-size: 13px;
    padding: 6px 12px;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.2s cubic-bezier(0.4, 0, 0.2, 1), color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.filter-select .custom-select-dropdown .custom-select-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary);
    transform: scaleY(0);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 0 4px 4px 0;
}

.filter-select .custom-select-dropdown .custom-select-item:hover {
    background: var(--bg);
    color: var(--text);
    transform: translateX(4px);
}

.filter-select .custom-select-dropdown .custom-select-item:hover::before {
    transform: scaleY(1);
}

.filter-select .custom-select-dropdown .custom-select-item.active {
    background: rgba(42, 125, 225, 0.06);
    color: var(--primary);
    font-weight: 500;
    transform: translateX(4px);
}

.filter-select .custom-select-dropdown .custom-select-item.active::before {
    transform: scaleY(1);
}

/* ===== 移动端工具栏 ===== */
.mobile-toolbar {
    display: none;
    background: var(--surface);
    border-radius: var(--radius);
    padding: 12px 16px 12px 16px;
    margin-bottom: 8px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    gap: 10px;
    flex-direction: column;
}

.mobile-toolbar .search-row {
    display: flex;
    gap: 8px;
}

.mobile-toolbar .search-row input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 15px;
    outline: none;
    background: var(--bg);
    transition: var(--transition);
    height: 46px;
    box-sizing: border-box;
}

.mobile-toolbar .search-row input:focus {
    border-color: var(--primary);
    background: var(--surface);
    box-shadow: 0 0 0 3px rgba(42, 125, 225, 0.12);
}

.mobile-toolbar .search-row button {
    padding: 10px 20px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 20px;
    font-size: 15px;
    cursor: pointer;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    height: 46px;
    box-sizing: border-box;
}

.mobile-toolbar .search-row button:hover {
    background: var(--primary-hover);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 16px rgba(42, 125, 225, 0.4);
}

.mobile-toolbar .category-scroll {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding: 8px 0 4px 0;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
}

.mobile-toolbar .category-scroll::-webkit-scrollbar {
    height: 2px;
}

.mobile-toolbar .category-scroll::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.mobile-toolbar .cat-chip {
    flex-shrink: 0;
    padding: 4px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    font-size: 13px;
    cursor: pointer;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.25s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.25s cubic-bezier(0.4, 0, 0.2, 1), color 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-secondary);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 4px;
}

.mobile-toolbar .cat-chip:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
    background: rgba(42, 125, 225, 0.08);
    color: var(--primary);
}

.mobile-toolbar .cat-chip.active {
    background: rgba(42, 125, 225, 0.15);
    border-color: var(--primary);
    color: var(--primary);
    font-weight: 600;
}

.mobile-toolbar .cat-chip i {
    font-size: 12px;
}

/* ===== 内容区 ===== */
.content {
    flex: 1;
    min-width: 0;
}

/* ===== 应用卡片网格 ===== */
.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
    animation: fadeUp 0.4s cubic-bezier(0.4, 0, 0.2, 1) 0.1s both;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.app-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    animation: fadeUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.app-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.app-card-header {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.app-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    background: var(--bg);
    flex-shrink: 0;
    border: 1px solid var(--border);
}

.app-card-info {
    flex: 1;
    min-width: 0;
}

.app-card-name {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 2px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.app-card-developer {
    font-size: 12px;
    color: var(--text-secondary);
}

.app-card-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 6px;
    margin-top: 8px;
}

.app-card-category {
    font-size: 11px;
    background: var(--bg);
    color: var(--text-secondary);
    padding: 2px 10px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.app-card-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
    flex: 1;
}

.app-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-secondary);
    flex-wrap: wrap;
    gap: 6px;
}

.app-card-license {
    font-weight: 600;
    color: #16a34a;
    font-size: 12px;
}

.app-card-systems {
    display: flex;
    gap: 6px;
    align-items: center;
    font-size: 14px;
    color: var(--text-secondary);
}

.app-card-systems .system-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.app-card-version {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 2px 8px;
    background: rgba(42, 125, 225, 0.08);
    border: 1px solid rgba(42, 125, 225, 0.2);
    border-radius: 12px;
    font-weight: 500;
}

/* ===== 详情页 ===== */
.detail-container {
    animation: fadeUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) 0.15s both;
    background: var(--surface);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.detail-back {
    display: inline-block;
    margin-bottom: 16px;
    color: var(--primary);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    background: none;
    border: none;
    padding: 0;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.detail-back:hover {
    transform: translateX(-4px);
    color: var(--primary-hover);
}

/* ===== 详情页顶部：图标 + 名称/版本 + 下载按钮 ===== */
.detail-top {
    display: flex;
    align-items: center;
    gap: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    flex-wrap: nowrap;
}

.detail-icon-large {
    width: 80px;
    height: 80px;
    min-width: 80px;
    min-height: 80px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    border: 1px solid var(--border);
    background: var(--bg);
    flex-shrink: 0;
}

.detail-info {
    flex: 1;
    min-width: 0;
}

.detail-name {
    font-size: 22px;
    font-weight: 700;
    word-break: break-word;
}

.detail-version {
    font-size: 14px;
    color: var(--text-secondary);
    display: inline-block;
    padding: 3px 10px;
    background: rgba(42, 125, 225, 0.08);
    border: 1px solid rgba(42, 125, 225, 0.2);
    border-radius: 12px;
    font-weight: 500;
    white-space: nowrap;
}

.detail-download-btn-wrap {
    flex-shrink: 0;
    margin-left: auto;
}

.detail-download-btn {
    padding: 10px 28px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 24px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.detail-download-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.detail-download-btn:active::before {
    width: 300px;
    height: 300px;
}

.detail-download-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 8px 24px rgba(42, 125, 225, 0.4);
}

/* 开发者 + 分类标签（顶部下方） */
.detail-meta-row {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    padding: 12px 0 8px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 12px;
    animation: fadeUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.detail-developer {
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.detail-categories {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    animation: fadeUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.detail-cat-tag {
    font-size: 12px;
    background: var(--bg);
    padding: 3px 14px;
    border-radius: 14px;
    border: 1px solid var(--border);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.2s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.detail-cat-tag:hover {
    border-color: var(--primary);
    background: rgba(42, 125, 225, 0.08);
    transform: translateY(-1px);
}

/* 描述 / Markdown */
.detail-desc {
    font-size: 14px;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 8px 0 4px 0;
    line-height: 1.7;
    animation: fadeUp 0.4s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

.detail-description-markdown {
    margin: 8px 0 4px 0;
    max-width: 800px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    overflow-wrap: break-word;
    animation: fadeUp 0.4s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
}

.detail-description-markdown h1,
.detail-description-markdown h2,
.detail-description-markdown h3,
.detail-description-markdown h4 {
    margin: 12px 0 6px 0;
    color: var(--text);
}

.detail-description-markdown ul,
.detail-description-markdown ol {
    padding-left: 24px;
    margin: 6px 0;
}

.detail-description-markdown li {
    margin: 2px 0;
}

.detail-description-markdown code {
    background: var(--bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
}

.detail-description-markdown pre {
    background: var(--bg);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: 8px 0;
}

.detail-description-markdown blockquote {
    border-left: 3px solid var(--border);
    padding-left: 12px;
    margin: 8px 0;
    color: var(--text-secondary);
}

.detail-description-markdown a {
    color: var(--primary);
    text-decoration: none;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), text-decoration 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.detail-description-markdown a:hover {
    transform: translateY(-1px);
    text-decoration: underline;
}

.detail-description-markdown img {
    max-width: 100%;
    border-radius: var(--radius-sm);
}

.detail-description-markdown table {
    border-collapse: collapse;
    width: 100%;
    margin: 8px 0;
}

.detail-description-markdown th,
.detail-description-markdown td {
    border: 1px solid var(--border);
    padding: 6px 10px;
    text-align: left;
}

.detail-description-markdown th {
    background: var(--bg);
}

/* 截图 */
.detail-screenshots {
    margin-top: 24px;
    animation: fadeUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.detail-screenshots h3 {
    font-size: 15px;
    margin-bottom: 10px;
    animation: fadeUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.screenshot-list {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    animation: fadeUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.screenshot-list img {
    height: 140px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    object-fit: cover;
    background: var(--bg);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.screenshot-list img:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
}

/* ===== 下载模态框 ===== */
.modal-download .modal-box {
    max-width: 520px;
}

/* 允许内容溢出 */
.modal-download.allow-overflow .modal-box-content {
    overflow: visible;
}

.modal-download.allow-overflow .modal-header {
    z-index: 30;
}

.modal-download.allow-overflow .step-section {
    position: relative;
    z-index: 20;
}

.step-section {
    margin-bottom: 18px;
}

.step-label {
    display: block;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 6px;
    color: var(--text);
}

.step-label i {
    margin-right: 6px;
    color: var(--primary);
}

.mirror-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 4px;
}

.mirror-item-download {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    gap: 12px;
    flex-wrap: wrap;
    animation: fadeUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mirror-item-download:hover {
    border-color: var(--primary);
    background: rgba(42, 125, 225, 0.03);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
}

.mirror-item-download .mirror-info {
    flex: 1;
}

.mirror-item-download .mirror-name {
    font-weight: 500;
    font-size: 14px;
}

.mirror-item-download .mirror-meta {
    font-size: 12px;
    color: var(--text-secondary);
}

.mirror-item-download .mirror-link-btn {
    padding: 6px 18px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 16px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.mirror-item-download .mirror-link-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(42, 125, 225, 0.3);
}

.download-error {
    color: #dc2626;
    font-size: 14px;
    padding: 10px 14px;
    background: #fef2f2;
    border-radius: var(--radius-sm);
    border: 1px solid #fecaca;
    margin-top: 8px;
}

/* ===== 弹窗 ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
    animation: fadeOut 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.active {
    display: flex;
}

.modal-overlay.hidden {
    animation: fadeOut 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay:not(.hidden) {
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(0.95);
    }
}

.modal-box {
    background: var(--surface);
    border-radius: var(--radius);
    max-width: 540px;
    width: 100%;
    max-height: 95vh;
    padding: 0;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
    overflow: visible;
    position: relative;
    animation: fadeUp 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-box-content {
    padding: 24px 28px;
    overflow-y: auto;
    flex: 1;
    border-radius: 0 0 var(--radius) var(--radius);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px 16px 28px;
    background: var(--surface);
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid var(--border);
    border-radius: var(--radius) var(--radius) 0 0;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.modal-header h2 {
    font-size: 18px;
    margin: 0;
    padding-right: 32px;
}

.modal-header h2 i {
    margin-right: 8px;
    color: var(--primary);
}

.modal-header .modal-close {
    position: static;
    font-size: 26px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    line-height: 1;
}

.modal-header .modal-close:hover {
    color: var(--text);
}

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    animation: fadeUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.empty-state .empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
    animation: bounce 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.empty-state h3 {
    font-size: 18px;
    color: var(--text);
    margin-bottom: 4px;
}

/* ===== 系统图标 ===== */
.system-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--text-secondary);
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    border: none;
    box-shadow: 0 4px 16px rgba(42, 125, 225, 0.35);
    cursor: pointer;
    font-size: 18px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 90;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
}

.back-to-top.show {
    display: flex;
    animation: fadeUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1;
    pointer-events: auto;
}

.back-to-top:hover {
    background: var(--primary-hover);
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 8px 24px rgba(42, 125, 225, 0.5);
}

/* ===== 系统图标颜色 ===== */
.fa-android {
    color: #3DDC84;
}
.fa-apple {
    color: #555;
}
.fa-windows {
    color: #0078D4;
}
.fa-linux {
    color: #FCC624;
}

/* ===== 响应式 ===== */
@media (max-width: 820px) {
    .sidebar {
        display: none;
    }

    .mobile-toolbar {
        display: flex;
    }

    .main-container {
        padding: 12px 12px 12px 12px;
        flex-direction: column;
    }

    .app-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .app-card {
        padding: 14px;
    }

    .app-card-icon {
        width: 44px;
        height: 44px;
    }

    .app-card-name {
        font-size: 15px;
    }

    .detail-container {
        padding: 16px;
    }

    /* ===== 移动端详情页顶部：保持横向布局 ===== */
    .detail-top {
        display: flex;
        flex-wrap: nowrap;
        gap: 14px;
        padding-bottom: 12px;
        align-items: center;
    }

    .detail-icon-large {
        width: 64px;
        height: 64px;
        min-width: 64px;
        min-height: 64px;
    }

    .detail-name {
        font-size: 18px;
    }

    .detail-version {
        font-size: 13px;
    }

    .detail-download-btn-wrap {
        flex-shrink: 0;
        margin-left: auto;
    }

    .detail-download-btn {
        padding: 8px 16px;
        font-size: 13px;
        white-space: nowrap;
        border-radius: 20px;
    }

    .detail-meta-row {
        padding: 10px 0 6px 0;
        gap: 10px;
    }

    .detail-developer {
        font-size: 13px;
    }

    .detail-cat-tag {
        font-size: 11px;
        padding: 2px 12px;
    }

    .detail-desc,
    .detail-description-markdown {
        font-size: 13px;
    }

    .screenshot-list img {
        height: 100px;
    }

    .modal-box {
        padding: 0;
        max-width: 100%;
        margin: 8px;
        max-height: 97vh;
    }

    .modal-box-content {
        padding: 16px 18px;
    }

    .modal-header {
        padding: 16px 18px 12px 18px;
    }

    .modal-header h2 {
        font-size: 16px;
    }

    .modal-header .modal-close {
        font-size: 22px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
        font-size: 16px;
    }

    .mobile-toolbar .search-row input {
        font-size: 15px;
        padding: 10px 14px;
        height: 46px;
    }

    .mobile-toolbar .search-row button {
        font-size: 15px;
        padding: 10px 18px;
        height: 46px;
    }

    .mobile-toolbar .cat-chip {
        font-size: 12px;
        padding: 4px 12px;
    }
}

@media (max-width: 480px) {
    .topbar {
        padding: 0 12px;
    }

    .logo {
        font-size: 14px;
    }

    .topbar-actions {
        font-size: 11px;
    }

    .app-grid {
        gap: 10px;
    }

    .app-card {
        padding: 12px;
    }

    .app-card-icon {
        width: 40px;
        height: 40px;
    }

    .app-card-name {
        font-size: 14px;
    }

    .app-card-developer {
        font-size: 11px;
    }

    .app-card-desc {
        font-size: 12px;
        -webkit-line-clamp: 2;
    }

    .app-card-footer {
        font-size: 11px;
        padding-top: 8px;
        margin-top: 8px;
        flex-direction: row;
        align-items: center;
        gap: 6px;
        flex-wrap: wrap;
    }

    .app-card-license {
        font-size: 11px;
    }

    .app-card-version {
        font-size: 11px;
    }

    .app-card-category {
        font-size: 10px;
        padding: 1px 8px;
    }

    .app-card-systems {
        font-size: 12px;
    }

    .main-container {
        padding: 8px 8px 8px 8px;
    }

    .detail-container {
        padding: 12px;
    }

    /* 移动端小屏：保持横向 */
    .detail-top {
        gap: 10px;
    }

    .detail-name {
        font-size: 16px;
    }

    .detail-icon-large {
        width: 56px;
        height: 56px;
        min-width: 56px;
        min-height: 56px;
    }

    .detail-download-btn {
        font-size: 12px;
        padding: 6px 14px;
    }

    .screenshot-list img {
        height: 80px;
    }

    .modal-box {
        padding: 0;
        max-height: 90vh;
    }

    .modal-box-content {
        padding: 12px 14px;
    }

    .modal-header {
        padding: 12px 14px 10px 14px;
    }

    .modal-header h2 {
        font-size: 15px;
    }

    .modal-header .modal-close {
        font-size: 20px;
    }

    .mirror-item-download {
        flex-direction: column;
        align-items: flex-start;
    }

    .mirror-item-download .mirror-link-btn {
        width: 100%;
        justify-content: center;
    }

    .custom-select-toggle {
        font-size: 13px;
        padding: 8px 12px;
    }

    .custom-select-dropdown .custom-select-item {
        font-size: 13px;
        padding: 6px 12px;
    }

    .back-to-top {
        bottom: 16px;
        right: 16px;
        width: 40px;
        height: 40px;
        font-size: 14px;
    }

    .mobile-toolbar {
        padding: 10px 12px 8px 12px;
    }

    .mobile-toolbar .search-row input {
        font-size: 15px;
        padding: 10px 12px;
        height: 46px;
    }

    .mobile-toolbar .search-row button {
        font-size: 15px;
        padding: 10px 16px;
        height: 46px;
    }

    .mobile-toolbar .cat-chip {
        font-size: 11px;
        padding: 3px 10px;
    }

    .detail-meta-row {
        padding: 8px 0 4px 0;
        gap: 8px;
    }

    .detail-developer {
        font-size: 12px;
    }

    .detail-desc,
    .detail-description-markdown {
        font-size: 12px;
    }

    .modal-box {
        padding: 0;
        max-height: 97vh;
    }

    .modal-box-content {
        padding: 12px 14px;
    }

    .modal-header {
        padding: 12px 14px 10px 14px;
    }

    .modal-header h2 {
        font-size: 15px;
    }

    .modal-header .modal-close {
        font-size: 20px;
    }
}

@media (max-width: 400px) {
    .detail-top {
        gap: 8px;
    }

    .detail-icon-large {
        width: 48px;
        height: 48px;
        min-width: 48px;
        min-height: 48px;
    }

    .detail-name {
        font-size: 14px;
    }

    .detail-version {
        font-size: 11px;
    }

    .detail-download-btn {
        font-size: 11px;
        padding: 5px 12px;
    }

    .app-card {
        padding: 10px;
    }

    .app-card-icon {
        width: 36px;
        height: 36px;
    }

    .app-card-name {
        font-size: 13px;
    }

    .app-card-desc {
        font-size: 11px;
        -webkit-line-clamp: 2;
    }

    .logo {
        font-size: 13px;
    }
}

}