/**
 * Material Design 主题样式
 * 支持深色/浅色模式切换
 */

:root {
    /* 浅色主题 (Light Theme) */
    --md-sys-color-primary: #6750A4;
    --md-sys-color-on-primary: #FFFFFF;
    --md-sys-color-primary-container: #EADDFF;
    --md-sys-color-on-primary-container: #21005D;
    --md-sys-color-secondary: #625B71;
    --md-sys-color-on-secondary: #FFFFFF;
    --md-sys-color-secondary-container: #E8DEF8;
    --md-sys-color-on-secondary-container: #1D192B;
    --md-sys-color-tertiary: #7D5260;
    --md-sys-color-on-tertiary: #FFFFFF;
    --md-sys-color-tertiary-container: #FFD8E4;
    --md-sys-color-on-tertiary-container: #31111D;
    --md-sys-color-error: #B3261E;
    --md-sys-color-on-error: #FFFFFF;
    --md-sys-color-error-container: #F9DEDC;
    --md-sys-color-on-error-container: #410E0B;
    --md-sys-color-background: #FFFBFE;
    --md-sys-color-on-background: #1C1B1F;
    --md-sys-color-surface: #FFFBFE;
    --md-sys-color-on-surface: #1C1B1F;
    --md-sys-color-surface-variant: #E7E0EC;
    --md-sys-color-on-surface-variant: #49454F;
    --md-sys-color-outline: #79747E;
    --md-sys-color-surface-container: #F3EDF7;
    --md-sys-color-surface-container-high: #ECE6F0;
    --md-sys-color-surface-container-highest: #E6E0E9;
    
    /* 字体 */
    --md-sys-font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --md-sys-typescale-display-large: 400 57px/64px var(--md-sys-font-family);
    --md-sys-typescale-headline-large: 400 32px/40px var(--md-sys-font-family);
    --md-sys-typescale-title-large: 400 22px/28px var(--md-sys-font-family);
    --md-sys-typescale-body-large: 400 16px/24px var(--md-sys-font-family);
    --md-sys-typescale-body-medium: 400 14px/20px var(--md-sys-font-family);
    --md-sys-typescale-body-small: 400 12px/16px var(--md-sys-font-family);
    --md-sys-typescale-label-large: 500 14px/20px var(--md-sys-font-family);
    
    /* 形状 */
    --md-sys-shape-corner-small: 8px;
    --md-sys-shape-corner-medium: 12px;
    --md-sys-shape-corner-large: 16px;
    --md-sys-shape-corner-extra-large: 28px;
    
    /* 阴影 */
    --md-sys-elevation-1: 0 1px 2px rgba(0,0,0,0.3), 0 1px 3px 1px rgba(0,0,0,0.15);
    --md-sys-elevation-2: 0 1px 2px rgba(0,0,0,0.3), 0 2px 6px 2px rgba(0,0,0,0.15);
    --md-sys-elevation-3: 0 4px 8px 3px rgba(0,0,0,0.15), 0 1px 3px rgba(0,0,0,0.3);
}

[data-theme="dark"] {
    /* 深色主题 (Dark Theme) */
    --md-sys-color-primary: #D0BCFF;
    --md-sys-color-on-primary: #381E72;
    --md-sys-color-primary-container: #4F378B;
    --md-sys-color-on-primary-container: #EADDFF;
    --md-sys-color-secondary: #CCC2DC;
    --md-sys-color-on-secondary: #332D41;
    --md-sys-color-secondary-container: #4A4458;
    --md-sys-color-on-secondary-container: #E8DEF8;
    --md-sys-color-tertiary: #EFB8C8;
    --md-sys-color-on-tertiary: #492532;
    --md-sys-color-tertiary-container: #633B48;
    --md-sys-color-on-tertiary-container: #FFD8E4;
    --md-sys-color-error: #F2B8B5;
    --md-sys-color-on-error: #601410;
    --md-sys-color-error-container: #8C1D18;
    --md-sys-color-on-error-container: #F9DEDC;
    --md-sys-color-background: #1C1B1F;
    --md-sys-color-on-background: #E6E1E5;
    --md-sys-color-surface: #1C1B1F;
    --md-sys-color-on-surface: #E6E1E5;
    --md-sys-color-surface-variant: #49454F;
    --md-sys-color-on-surface-variant: #CAC4D0;
    --md-sys-color-outline: #938F99;
    --md-sys-color-surface-container: #211F26;
    --md-sys-color-surface-container-high: #2A2830;
    --md-sys-color-surface-container-highest: #35333B;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font: var(--md-sys-typescale-body-large);
    background-color: var(--md-sys-color-background);
    color: var(--md-sys-color-on-background);
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
}

/* 容器 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}

/* 页面头部 */
.page-header {
    padding: 24px 16px;
    margin-bottom: 24px;
}

.page-header h1 {
    font: var(--md-sys-typescale-headline-large);
    color: var(--md-sys-color-on-background);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.page-header p {
    font: var(--md-sys-typescale-body-medium);
    color: var(--md-sys-color-on-surface-variant);
    margin-top: 8px;
}

.page-marquee {
    max-width: 760px;
    margin: 16px auto 0;
    overflow: hidden;
    border: 1px solid rgba(103, 80, 164, 0.22);
    border-radius: 999px;
    background: rgba(103, 80, 164, 0.08);
}

.page-marquee-track {
    display: inline-flex;
    min-width: 100%;
    gap: 36px;
    padding: 8px 16px;
    white-space: nowrap;
    animation: marquee-scroll 24s linear infinite;
}

.page-marquee:hover .page-marquee-track {
    animation-play-state: paused;
}

.page-marquee-item {
    color: var(--md-sys-color-primary);
    font: var(--md-sys-typescale-body-medium);
    text-decoration: none;
}

.page-marquee-item:hover {
    text-decoration: underline;
}

@keyframes marquee-scroll {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(-100%);
    }
}

/* 卡片 */
.card {
    background-color: var(--md-sys-color-surface-container-high);
    border-radius: var(--md-sys-shape-corner-large);
    padding: 24px;
    box-shadow: var(--md-sys-elevation-1);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--md-sys-elevation-2);
}

/* 筛选按钮 */
.filter-container {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.filter-btn {
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--md-sys-color-outline);
    background-color: var(--md-sys-color-surface-container);
    color: var(--md-sys-color-on-surface);
    font: var(--md-sys-typescale-label-large);
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-btn:hover {
    background-color: var(--md-sys-color-surface-container-high);
    border-color: var(--md-sys-color-primary);
}

.filter-btn.active {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    border-color: var(--md-sys-color-primary);
}

/* 平台徽章 */
.platform-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 500;
    margin-left: 8px;
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--md-sys-color-on-surface-variant);
}

/* 资源卡片 (首页) */
.resource-card-wrapper {
    text-decoration: none;
    color: inherit;
    display: block;
    height: 100%;
    width: 100%;
}

.resource-item {
    display: flex;
    height: 328px;
}

.resource-card {
    background-color: var(--md-sys-color-surface-container-high);
    border-radius: var(--md-sys-shape-corner-large);
    box-shadow: var(--md-sys-elevation-1);
    transition: all 0.3s ease;
    height: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    padding: 20px !important;
}

.resource-card.recommended {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1) 0%, var(--md-sys-color-surface-container-high) 100%);
    border: 1px solid rgba(255, 193, 7, 0.2);
}

.resource-card.recommended::before {
    content: '站长推荐';
    position: absolute;
    top: 8px;
    right: 8px;
    background: linear-gradient(135deg, #FFC107 0%, #FFA000 100%);
    color: #000;
    font-size: 11px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    z-index: 1;
    white-space: nowrap;
}

/* 徽章样式 */
.badge {
    padding: 4px 10px;
    border-radius: 90px;
    font-weight: 500;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
}

.badge.bg-success {
    background-color: rgba(76, 175, 80, 0.35) !important;
    color: #fff !important;
}

.badge.bg-warning {
    background-color: rgba(255, 193, 7, 0.35) !important;
    color: #000 !important;
}

.resource-card.recommended::before {
    content: '站长推荐';
    position: absolute;
    top: 8px;
    right: -30px;
    background: linear-gradient(135deg, #FFC107 0%, #FFA000 100%);
    color: #000;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 30px;
    transform: rotate(45deg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    z-index: 1;
}

.resource-card:hover {
    box-shadow: var(--md-sys-elevation-3);
    transform: translateY(-2px);
}

.resource-card h5 {
    font: var(--md-sys-typescale-title-large);
    color: var(--md-sys-color-on-surface);
}

.resource-card .resource-description {
    font: var(--md-sys-typescale-body-medium);
    color: var(--md-sys-color-on-surface-variant);
}

.resource-updated {
    display: block;
    margin-top: 6px;
    color: var(--md-sys-color-on-surface-variant);
}

/* 版本卡片 */
.release-card-wrapper {
    width: 100%;
    display: block;
    margin-bottom: 24px;
}

.release-card {
    background-color: var(--md-sys-color-surface-container-high);
    border-radius: var(--md-sys-shape-corner-large);
    box-shadow: var(--md-sys-elevation-1);
    transition: all 0.3s ease;
    width: 100%;
}

.release-card:hover {
    box-shadow: var(--md-sys-elevation-2);
}

.release-tag {
    font-family: 'Roboto Mono', monospace;
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    padding: 6px 12px;
    border-radius: var(--md-sys-shape-corner-small);
    font-weight: 500;
    font-size: 14px;
    display: inline-block;
}

/* 徽章 */
.badge {
    padding: 4px 10px;
    border-radius: 100px;
    font-weight: 500;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
}

.badge.bg-success {
    background-color: rgba(76, 175, 80, 0.7) !important;
    color: #fff !important;
}

.badge.bg-warning {
    background-color: rgba(255, 193, 7, 0.7) !important;
    color: #000 !important;
}

/* 版本说明体 */
.release-body {
    max-height: 200px;
    overflow-y: auto;
    background-color: var(--md-sys-color-surface-container);
    padding: 16px;
    border-radius: var(--md-sys-shape-corner-medium);
    font: var(--md-sys-typescale-body-medium);
    color: var(--md-sys-color-on-surface-variant);
    margin-top: 16px;
}

.release-body::-webkit-scrollbar {
    width: 8px;
}

.release-body::-webkit-scrollbar-track {
    background-color: var(--md-sys-color-surface-container-high);
    border-radius: 4px;
}

.release-body::-webkit-scrollbar-thumb {
    background-color: var(--md-sys-color-outline);
    border-radius: 4px;
}

/* 资源描述滚动条 */
.resource-description {
    font: var(--md-sys-typescale-body-medium);
    color: var(--md-sys-color-on-surface-variant);
}

.resource-description::-webkit-scrollbar {
    width: 6px;
}

.resource-description::-webkit-scrollbar-track {
    background-color: var(--md-sys-color-surface-container);
    border-radius: 3px;
}

.resource-description::-webkit-scrollbar-thumb {
    background-color: var(--md-sys-color-outline);
    border-radius: 3px;
}

/* 资产项 */
.asset-item {
    background-color: var(--md-sys-color-surface-container);
    border-radius: var(--md-sys-shape-corner-medium);
    padding: 12px 16px;
    margin-bottom: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.asset-item:hover {
    background-color: var(--md-sys-color-surface-container-high);
    border-color: var(--md-sys-color-primary);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 资产项内部滚动条隐藏 */
.asset-item::-webkit-scrollbar {
    display: none;
}

/* 文件大小标签 */
.file-size {
    background-color: rgba(255, 255, 255, 0.2);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    color: var(--md-sys-color-on-surface-variant);
    transition: all 0.3s ease;
}

[data-theme="dark"] .file-size {
    background-color: rgba(255, 255, 255, 0.1);
}

.asset-item:hover .file-size {
    background-color: rgba(255, 255, 255, 0.25);
}

/* 按钮 */
.btn {
    font: var(--md-sys-typescale-label-large);
    border-radius: var(--md-sys-shape-corner-small);
    padding: 10px 24px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.btn-primary:hover {
    background-color: #5A4A94;
    box-shadow: var(--md-sys-elevation-2);
}

.btn-outline-primary {
    background-color: transparent;
    border: 1px solid var(--md-sys-color-primary);
    color: var(--md-sys-color-primary);
}

.btn-outline-primary:hover {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.back-btn {
    background-color: var(--md-sys-color-surface-container);
    color: var(--md-sys-color-on-surface);
}

.back-btn:hover {
    background-color: var(--md-sys-color-surface-container-high);
    transform: translateX(-4px);
}

/* 主题切换按钮 */
.theme-toggle {
    position: fixed;
    top: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--md-sys-color-surface-container-high);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--md-sys-elevation-2);
    transition: all 0.3s ease;
    z-index: 1000;
}

.theme-toggle:hover {
    box-shadow: var(--md-sys-elevation-3);
    transform: scale(1.1);
}

/* 警告框 */
.alert {
    padding: 16px;
    border-radius: var(--md-sys-shape-corner-medium);
    margin-bottom: 16px;
    font: var(--md-sys-typescale-body-medium);
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-warning {
    background-color: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}

.alert-danger {
    background-color: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}

.alert-info {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.alert-secondary {
    background-color: var(--md-sys-color-surface-container-highest);
    color: var(--md-sys-color-on-surface-variant);
}

/* 页脚 */
footer {
    text-align: center;
    padding: 32px 16px;
    margin-top: 48px;
    color: var(--md-sys-color-on-surface-variant);
    font: var(--md-sys-typescale-body-small);
}

footer a {
    color: var(--md-sys-color-primary);
    text-decoration: none;
}

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

/* 链接 */
a {
    color: var(--md-sys-color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #5A4A94;
}

/* 统计信息 */
.stats-container {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: var(--md-sys-color-surface-container);
    border-radius: var(--md-sys-shape-corner-small);
    font: var(--md-sys-typescale-body-medium);
    color: var(--md-sys-color-on-surface-variant);
}

/* 辅助类 */
.text-center {
    text-align: center;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-2 {
    margin-bottom: 8px;
}

.mb-3 {
    margin-bottom: 16px;
}

.mb-4 {
    margin-bottom: 24px;
}

.mb-5 {
    margin-bottom: 48px;
}

.mt-2 {
    margin-top: 8px;
}

.mt-3 {
    margin-top: 16px;
}

.mt-4 {
    margin-top: 24px;
}

.mt-5 {
    margin-top: 48px;
}

.ms-1 {
    margin-left: 4px;
}

.ms-2 {
    margin-left: 8px;
}

.p-4 {
    padding: 24px;
}

.gap-2 {
    gap: 8px;
}

/* 响应式网格 */
.row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin: 0;
    align-items: stretch;
}

.col-12, .col-md-6, .col-lg-4 {
    padding: 0;
    display: flex;
    box-sizing: border-box;
}

.col-12 {
    width: 100%;
}

@media (max-width: 767px) {
    .col-md-6, .col-lg-4 {
        width: 100%;
        max-width: 100%;
        flex: 0 0 100%;
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    .col-lg-4 {
        width: calc(50% - 8px);
        max-width: calc(50% - 8px);
        flex: 0 0 calc(50% - 8px);
    }
}

@media (min-width: 992px) {
    .col-lg-4 {
        width: calc(33.333333% - 10.667px);
        max-width: calc(33.333333% - 10.667px);
        flex: 0 0 calc(33.333333% - 10.667px);
    }
}

/* 深色模式切换过渡 */
body, .card, .resource-card, .release-card, .asset-item, .btn, .theme-toggle {
    transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}