/* ═══════════════════════════════════════════════════
   TrendPick – Video-First Design
   Mobile-first, 竖版视频墙，极简购买体验
═══════════════════════════════════════════════════ */

/* ── Tokens ── */
:root {
    --bg: #0a0a0d;
    --bg2: #111116;
    --bg3: #18181f;
    --surface: #1e1e28;
    --border: #28283a;
    --accent: #ff4d6d;
    --accent2: #ff8fa3;
    --text: #f2f2f5;
    --text2: #8888a0;
    --text3: #484860;
    --font-d: 'Space Grotesk', sans-serif;
    --font-b: 'Inter', sans-serif;
    --r: 10px;
    --r-sm: 6px;
    --nav-h: 54px;
}

/* ── Reset ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-b);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

img, video {
    display: block;
    max-width: 100%;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font: inherit;
    color: inherit;
}

/* ════════════════════════════════════════════════
   HEADER
════════════════════════════════════════════════ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 200;
    height: var(--nav-h);
    background: rgba(10,10,13,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.hdr-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 7px;
    font-family: var(--font-d);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -.4px;
    flex-shrink: 0;
    color: var(--text);
}

.logo-play {
    width: 26px;
    height: 26px;
    background: var(--accent);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .7rem;
    color: #fff;
    flex-shrink: 0;
}

.hdr-nav {
    display: flex;
    gap: 2px;
}

    .hdr-nav a {
        padding: 6px 12px;
        border-radius: var(--r-sm);
        font-size: .82rem;
        font-weight: 500;
        color: var(--text2);
        transition: color .15s, background .15s;
        white-space: nowrap;
    }

        .hdr-nav a:hover {
            color: var(--text);
            background: var(--surface);
        }

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 7px;
    margin-left: auto;
    border-radius: var(--r-sm);
    transition: background .15s;
}

    .hamburger:hover {
        background: var(--surface);
    }

    .hamburger span {
        display: block;
        width: 20px;
        height: 1.5px;
        background: var(--text);
        border-radius: 2px;
        transition: transform .25s, opacity .2s;
    }

    .hamburger.open span:nth-child(1) {
        transform: translateY(6.5px) rotate(45deg);
    }

    .hamburger.open span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.open span:nth-child(3) {
        transform: translateY(-6.5px) rotate(-45deg);
    }

/* Mobile nav drawer */
@media (max-width: 680px) {
    .hdr-nav {
        display: none;
        flex-direction: column;
        position: fixed;
        top: var(--nav-h);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg2);
        padding: 20px 16px;
        z-index: 199;
        gap: 4px;
        border-top: 1px solid var(--border);
    }

        .hdr-nav.open {
            display: flex;
        }

        .hdr-nav a {
            font-size: .95rem;
            padding: 12px 14px;
            border-radius: var(--r);
        }

    .hamburger {
        display: flex;
    }
}

/* ════════════════════════════════════════════════
   CATEGORY PILLS
════════════════════════════════════════════════ */
.cat-bar {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: var(--nav-h);
    z-index: 100;
}

.cat-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 10px 16px;
    display: flex;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
}

    .cat-inner::-webkit-scrollbar {
        display: none;
    }

.cat-pill {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 13px;
    border-radius: 20px;
    border: 1px solid var(--border);
    font-size: .78rem;
    font-weight: 500;
    color: var(--text2);
    white-space: nowrap;
    flex-shrink: 0;
    transition: all .18s;
}

    .cat-pill:hover {
        border-color: var(--accent2);
        color: var(--text);
    }

    .cat-pill.active {
        background: var(--accent);
        border-color: var(--accent);
        color: #fff;
    }

    .cat-pill .ci {
        font-size: .9rem;
    }

/* ════════════════════════════════════════════════
   VIDEO WALL – INDEX PAGE
════════════════════════════════════════════════ */
.video-wall {
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px;
    /* 响应式列数：手机2列，平板3列，桌面4-5列 */
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

@media (min-width: 560px) {
    .video-wall {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }
}

@media (min-width: 860px) {
    .video-wall {
        grid-template-columns: repeat(4, 1fr);
        gap: 14px;
    }
}

@media (min-width: 1100px) {
    .video-wall {
        grid-template-columns: repeat(5, 1fr);
        gap: 14px;
    }
}

@media (min-width: 1400px) {
    .video-wall {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* ── Video Card ── */
.vcard {
    position: relative;
    border-radius: var(--r);
    overflow: hidden;
    background: var(--bg3);
    cursor: pointer;
    /* 9:16 纵横比 */
    aspect-ratio: 9 / 16;
    /* 点击高亮效果 */
    transition: transform .2s;
}

    .vcard:hover {
        transform: scale(1.02);
    }

    .vcard:active {
        transform: scale(0.98);
    }

/* 缩略图 */
.vcard-thumb {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity .35s;
}
/* 视频（自动播放时替换缩略图） */
.vcard-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity .4s;
}

    .vcard-video.playing {
        opacity: 1;
    }

        .vcard-video.playing ~ .vcard-thumb {
            opacity: 0;
        }

/* 底部渐变遮罩+信息 */
.vcard-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 36px 10px 10px;
    background: linear-gradient(transparent, rgba(0,0,0,.78));
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.vcard-title {
    font-size: .75rem;
    font-weight: 600;
    color: #fff;
    line-height: 1.25;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.vcard-price-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
}

.vcard-price {
    font-family: var(--font-d);
    font-size: .85rem;
    font-weight: 700;
    color: #fff;
}

.vcard-buy {
    font-size: .65rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 4px;
    color: #fff;
    white-space: nowrap;
    transition: filter .15s;
}

    .vcard-buy:hover {
        filter: brightness(1.15);
    }

/* 播放指示器 */
.vcard-play-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,.15);
    backdrop-filter: blur(6px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    transition: opacity .2s;
}

    .vcard-play-hint::after {
        content: '';
        border-top: 8px solid transparent;
        border-bottom: 8px solid transparent;
        border-left: 14px solid rgba(255,255,255,.85);
        margin-left: 3px;
    }

.vcard:hover .vcard-play-hint,
.vcard-video.playing ~ .vcard-play-hint {
    opacity: 0;
}

/* 徽章 */
.vcard-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    font-size: .6rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    letter-spacing: .03em;
    text-transform: uppercase;
}

.badge-hot {
    background: #FFD166;
    color: #000;
}

.badge-sale {
    background: var(--accent);
    color: #fff;
}

/* ── 空状态 ── */
.wall-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 20px;
    color: var(--text3);
}

    .wall-empty p {
        font-size: 1rem;
    }

/* ════════════════════════════════════════════════
   DETAIL PAGE – VIDEO HERO
════════════════════════════════════════════════ */

/* 手机：全屏竖版视频 */
.detail-page {
    max-width: 1400px;
    margin: 0 auto;
}

/* 面包屑 */
.breadcrumb {
    padding: 14px 16px;
    font-size: .75rem;
    color: var(--text3);
    display: flex;
    gap: 5px;
    align-items: center;
    flex-wrap: wrap;
}

    .breadcrumb a:hover {
        color: var(--accent2);
    }

.bc-sep {
    color: var(--text3);
}

/* 布局：手机竖排，桌面横排 */
.detail-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
}

@media (min-width: 860px) {
    .detail-layout {
        grid-template-columns: minmax(0, 460px) 1fr;
        gap: 0;
        align-items: start;
        min-height: calc(100vh - var(--nav-h));
    }
}

/* 视频容器 */
.detail-video-wrap {
    position: relative;
    background: #000;
    /* 手机：全宽9:16 */
    aspect-ratio: 9 / 16;
    max-height: 92vh;
    overflow: hidden;
}

@media (min-width: 860px) {
    .detail-video-wrap {
        /* 桌面：左列固定竖版，高度撑满视口 */
        position: sticky;
        top: calc(var(--nav-h) + 40px); /* sticky内容需要非static父级 */
        aspect-ratio: 9 / 16;
        max-height: calc(100vh - var(--nav-h) - 80px);
        border-radius: var(--r);
        margin: 20px 0 20px 20px;
    }
}

.detail-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 视频上的购买浮层（暂停时显示） */
.detail-shop-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding: 0 20px 24px;
    background: linear-gradient(transparent 50%, rgba(0,0,0,.6));
    pointer-events: none;
    opacity: 1;
    transition: opacity .3s;
}

    .detail-shop-overlay.hidden {
        opacity: 0;
    }

    .detail-shop-overlay a {
        pointer-events: all;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
        padding: 14px;
        border-radius: var(--r);
        font-family: var(--font-d);
        font-size: 1rem;
        font-weight: 700;
        color: #fff;
        letter-spacing: -.2px;
        transition: filter .15s, transform .1s;
        gap: 8px;
    }

        .detail-shop-overlay a:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
        }

/* 右列：信息面板 */
.detail-info {
    padding: 16px 16px 48px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

@media (min-width: 860px) {
    .detail-info {
        padding: 24px 24px 48px;
    }
}

.detail-title {
    font-family: var(--font-d);
    font-size: clamp(1.2rem, 2.5vw, 1.7rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text);
}

.detail-meta {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.detail-price {
    font-family: var(--font-d);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text);
}

.detail-price-was {
    font-size: .95rem;
    color: var(--text3);
    text-decoration: line-through;
}

.detail-save {
    background: var(--accent);
    color: #fff;
    padding: 3px 9px;
    border-radius: 4px;
    font-size: .72rem;
    font-weight: 700;
}
/* 主购买按钮 */
.detail-buy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    border-radius: var(--r);
    font-family: var(--font-d);
    font-size: 1.05rem;
    font-weight: 700;
    color: #fff;
    width: 100%;
    transition: filter .15s, transform .1s;
}

    .detail-buy-btn:hover {
        filter: brightness(1.1);
        transform: translateY(-2px);
    }

    .detail-buy-btn:active {
        transform: translateY(0);
    }

/* 平台标签 */
.platform-tag {
    display: inline-flex;
    align-items: center;
    border: 1px solid;
    border-radius: 20px;
    padding: 3px 12px;
    font-size: .75rem;
    font-weight: 600;
}
/* affiliate小字 */
.affiliate-note {
    font-size: .7rem;
    color: var(--text3);
    line-height: 1.5;
}

    .affiliate-note a {
        color: var(--accent2);
    }

/* 统计行 */
.detail-stats {
    display: flex;
    gap: 16px;
    font-size: .78rem;
    color: var(--text3);
}

/* 分享 */
.share-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

    .share-row span {
        font-size: .78rem;
        color: var(--text3);
    }

.share-pill {
    padding: 5px 12px;
    border-radius: 20px;
    border: 1px solid var(--border);
    font-size: .75rem;
    font-weight: 600;
    color: var(--text2);
    transition: background .15s;
}

    .share-pill:hover {
        background: var(--surface);
    }

.share-native {
    padding: 5px 12px;
    border-radius: 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    font-size: .75rem;
    font-weight: 600;
    cursor: pointer;
    color: var(--text2);
    transition: background .15s;
}

    .share-native:hover {
        background: var(--border);
    }

/* ── Related 视频网格 ── */
.related-section {
    padding: 0 16px 48px;
    border-top: 1px solid var(--border);
    margin-top: 8px;
}

@media (min-width: 860px) {
    .related-section {
        padding: 0 24px 48px;
    }
}

.related-title {
    font-family: var(--font-d);
    font-size: 1rem;
    font-weight: 700;
    padding: 20px 0 12px;
    color: var(--text);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

@media (min-width: 560px) {
    .related-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 860px) {
    .related-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ════════════════════════════════════════════════
   FOOTER
════════════════════════════════════════════════ */
.site-footer {
    border-top: 1px solid var(--border);
    background: var(--bg2);
}

.ftr-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 32px 16px 20px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 28px;
}

@media (max-width: 600px) {
    .ftr-inner {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

.ftr-logo {
    display: flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 8px;
    font-weight: 600;
}

.ftr-desc {
    font-size: .8rem;
    color: var(--text3);
}

.ftr-heading {
    font-size: .68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--text3);
    margin-bottom: 10px;
}

.ftr-link {
    display: block;
    font-size: .82rem;
    color: var(--text2);
    margin-bottom: 7px;
    transition: color .15s;
}

    .ftr-link:hover {
        color: var(--text);
    }

.ftr-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding: 14px 16px;
    border-top: 1px solid var(--border);
}

    .ftr-bottom p {
        font-size: .72rem;
        color: var(--text3);
        line-height: 1.6;
    }

/* ════════════════════════════════════════════════
   STATIC & UTILITIES
════════════════════════════════════════════════ */
.static-page {
    max-width: 720px;
    margin: 0 auto;
    padding: 40px 20px 80px;
}

    .static-page h1 {
        font-family: var(--font-d);
        font-size: 1.8rem;
        font-weight: 700;
        margin-bottom: 8px;
    }

    .static-page h2 {
        font-family: var(--font-d);
        font-size: 1rem;
        font-weight: 600;
        margin: 24px 0 8px;
    }

    .static-page p {
        color: var(--text2);
        margin-bottom: 10px;
        font-size: .9rem;
    }

/* ── Scrollbar ── */
::-webkit-scrollbar {
    width: 4px;
    height: 4px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition: none !important;
    }

    .vcard-video {
        display: none !important;
    }
}