/* ==========================================================================
   YouTube Integration Pro v2.0 — 前端样式
   3 套主题：default | dark | minimal
   ========================================================================== */

:root {
    --yti-red: #ff0000;
    --yti-dark: #0f0f0f;
    --yti-text: #212121;
    --yti-muted: #606060;
    --yti-bg: #fff;
    --yti-bg-alt: #f5f5f5;
    --yti-border: #e8e8e8;
    --yti-radius: 10px;
    --yti-radius-sm: 6px;
    --yti-shadow: 0 2px 12px rgba(0, 0, 0, .1);
    --yti-shadow-hov: 0 6px 24px rgba(0, 0, 0, .16);
    --yti-dur: .22s;
    --yti-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ── 主题：深色 ────────────────────────────────────────────── */
.yti-theme-dark {
    --yti-text: #e5e7eb;
    --yti-muted: #9ca3af;
    --yti-bg: #1f2937;
    --yti-bg-alt: #111827;
    --yti-border: #374151;
    --yti-shadow: 0 2px 12px rgba(0, 0, 0, .4);
    --yti-shadow-hov: 0 6px 24px rgba(0, 0, 0, .6);
}

/* ── 主题：极简 ────────────────────────────────────────────── */
.yti-theme-minimal {
    --yti-shadow: none;
    --yti-shadow-hov: none;
    --yti-border: transparent;
}

.yti-theme-minimal .yti-card,
.yti-theme-minimal .yti-scroll__item {
    box-shadow: none !important;
    background: transparent !important;
}

/* ── 通用 ──────────────────────────────────────────────────── */
.yti-block *,
.yti-block *::before,
.yti-block *::after {
    box-sizing: border-box;
}

.yti-block {
    font-family: var(--yti-font);
    color: var(--yti-text);
}

.yti-block a {
    text-decoration: none;
}

.yti-error {
    padding: 10px 14px;
    border-left: 4px solid var(--yti-red);
    background: #fff5f5;
    color: #900;
    border-radius: var(--yti-radius-sm);
    font-size: .875rem;
    margin: 10px 0;
}

.yti-block__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 16px;
    padding-bottom: 8px;
    border-bottom: 3px solid var(--yti-red);
    display: inline-block;
}

/* ── 缩略图 ──────────────────────────────────────────────────── */
.yti-thumb {
    position: relative;
    overflow: hidden;
    border-radius: var(--yti-radius);
    background: var(--yti-dark);
    display: block;
}

.yti-ratio--16-9 {
    aspect-ratio: 16 / 9;
}

.yti-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--yti-dur), opacity var(--yti-dur);
}

.yti-thumb:hover img {
    transform: scale(1.04);
    opacity: .85;
}

/* ── 播放按钮 ──────────────────────────────────────────────── */
.yti-play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    background: rgba(0, 0, 0, .18);
    transition: opacity var(--yti-dur);
    pointer-events: none;
}

.yti-play-icon {
    width: 52px;
    height: 37px;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, .45));
}

.yti-thumb:hover .yti-play-overlay {
    opacity: 1;
}

/* ── 角标 ──────────────────────────────────────────────────── */
.yti-badge {
    position: absolute;
    font-size: .68rem;
    font-weight: 700;
    line-height: 1;
    padding: 3px 6px;
    border-radius: 4px;
    pointer-events: none;
}

.yti-badge--duration {
    bottom: 6px;
    right: 7px;
    background: rgba(0, 0, 0, .82);
    color: #fff;
}

.yti-badge--live {
    top: 7px;
    left: 7px;
    background: var(--yti-red);
    color: #fff;
    text-transform: uppercase;
    animation: yti-pulse 1.6s ease-in-out infinite;
}

@keyframes yti-pulse {

    0%,
    100% {
        opacity: 1
    }

    50% {
        opacity: .5
    }
}

/* ── 标题（视频下方）3种大小 ─────────────────────────────── */
.yti-card__title {
    margin: 8px 0 4px;
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.yti-title-sm .yti-card__title {
    font-size: .82rem;
}

.yti-title-md .yti-card__title {
    font-size: .93rem;
}

.yti-title-lg .yti-card__title {
    font-size: 1.05rem;
}

.yti-card__title a {
    color: var(--yti-text);
    transition: color var(--yti-dur);
}

.yti-card__title a:hover {
    color: var(--yti-red);
}

/* ── 标题位置：覆盖在缩略图内部 ─────────────────────────── */
.yti-title--inside {
    position: absolute;
    inset: auto 0 0 0;
    background: linear-gradient(transparent 0%, rgba(0, 0, 0, .78) 100%);
    padding: 28px 10px 9px;
    border-radius: 0 0 var(--yti-radius) var(--yti-radius);
}

.yti-title--inside .yti-card__title {
    margin: 0;
    color: #fff;
    font-size: .88rem;
    -webkit-line-clamp: 2;
    line-clamp: 2;
}

.yti-title--inside .yti-card__title a {
    color: #fff;
}

.yti-title--inside .yti-card__title a:hover {
    color: rgba(255, 255, 255, .85);
}

/* ── 标题位置：缩略图上方 ────────────────────────────────── */
.yti-title--above {
    margin: 0 0 6px;
    padding: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ── Meta 行 ─────────────────────────────────────────────── */
.yti-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: .77rem;
    color: var(--yti-muted);
    margin-top: 3px;
}

.yti-meta__views {
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.yti-meta__views svg {
    opacity: .7;
    flex-shrink: 0;
}

/* ══════════════════════════════════════════════════════════════
   布局 1：网格（Grid）— 默认 2 列
   ══════════════════════════════════════════════════════════════ */
.yti-grid {
    display: grid;
    gap: 20px;
}

.yti-cols-1 {
    grid-template-columns: 1fr;
}

.yti-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.yti-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.yti-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

.yti-cols-5 {
    grid-template-columns: repeat(5, 1fr);
}

.yti-cols-6 {
    grid-template-columns: repeat(6, 1fr);
}

.yti-card {
    background: var(--yti-bg);
    border-radius: var(--yti-radius);
    overflow: hidden;
    box-shadow: var(--yti-shadow);
    transition: box-shadow var(--yti-dur), transform var(--yti-dur);
}

.yti-card:hover {
    box-shadow: var(--yti-shadow-hov);
    transform: translateY(-3px);
}

.yti-card .yti-thumb {
    border-radius: 0;
}

.yti-card__info {
    padding: 10px 12px 13px;
}

/* ══════════════════════════════════════════════════════════════
   布局 2：单排横向自动循环滚动（Auto-Loop Scroll）
   ══════════════════════════════════════════════════════════════ */

/* 外容器：裁剪溢出 */
.yti-scroll-outer {
    overflow: hidden;
    position: relative;
}

/* 滚动轨道：flex 不换行，由 JS translate 驱动 */
.yti-scroll {
    display: flex;
    flex-wrap: nowrap;
    gap: 14px;
    will-change: transform;
    /* 防止 transition 干扰 JS transform */
    transition: none;
}

/* 悬停时由 JS 暂停动画，无需额外 CSS */




.yti-scroll__item {
    flex: 0 0 260px;
    min-width: 0;
    scroll-snap-align: start;
    background: var(--yti-bg);
    border-radius: var(--yti-radius);
    overflow: hidden;
    box-shadow: var(--yti-shadow);
    transition: box-shadow var(--yti-dur), transform var(--yti-dur);
}

.yti-scroll__item:hover {
    box-shadow: var(--yti-shadow-hov);
    transform: translateY(-3px);
}

.yti-scroll__item .yti-thumb {
    border-radius: 0;
}

.yti-scroll__info {
    padding: 10px 12px 13px;
}

/* ══════════════════════════════════════════════════════════════
   布局 3：旋转木马（Carousel）
   ══════════════════════════════════════════════════════════════ */
.yti-carousel {
    position: relative;
    overflow: hidden;
    user-select: none;
    touch-action: pan-y;
    border-radius: var(--yti-radius);
}

.yti-carousel__track-wrap {
    overflow: hidden;
}

.yti-carousel__track {
    display: flex;
    transition: transform .4s cubic-bezier(.25, .46, .45, .94);
    will-change: transform;
}

.yti-carousel__slide {
    flex: 0 0 100%;
    min-width: 0;
}

.yti-carousel__slide .yti-thumb {
    border-radius: var(--yti-radius) var(--yti-radius) 0 0;
}

.yti-carousel__info {
    padding: 12px 14px 14px;
    background: var(--yti-bg);
    border-radius: 0 0 var(--yti-radius) var(--yti-radius);
    box-shadow: var(--yti-shadow);
}

/* 箭头 */
.yti-carousel__arrow {
    position: absolute;
    top: 40%;
    transform: translateY(-50%);
    z-index: 10;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .92);
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--yti-dur);
    padding: 0;
}

.yti-carousel__arrow svg {
    width: 22px;
    height: 22px;
    fill: #111;
}

.yti-carousel__arrow:hover {
    background: #fff;
    box-shadow: 0 4px 16px rgba(0, 0, 0, .25);
}

.yti-carousel__arrow--prev {
    left: 12px;
}

.yti-carousel__arrow--next {
    right: 12px;
}

.yti-carousel__arrow[disabled] {
    opacity: .3;
    pointer-events: none;
}

/* 分页点 */
.yti-carousel__dots {
    display: flex;
    justify-content: center;
    gap: 6px;
    padding: 10px 0 4px;
}

.yti-carousel__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--yti-border);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: background var(--yti-dur), transform var(--yti-dur);
}

.yti-carousel__dot.is-active {
    background: var(--yti-red);
    transform: scale(1.35);
}

/* ── 单视频嵌入 ──────────────────────────────────────────── */
.yti-video-wrap {
    margin: 0 auto;
    width: 100%;
}

.yti-video-responsive {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--yti-radius);
    background: var(--yti-dark);
    box-shadow: var(--yti-shadow);
}

.yti-video-responsive iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* ── Widget ───────────────────────────────────────────────── */
.yti-widget-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.yti-widget-item {
    margin-bottom: 12px;
}

.yti-widget-item a {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    text-decoration: none;
    color: inherit;
    transition: opacity var(--yti-dur);
}

.yti-widget-item a:hover {
    opacity: .78;
}

.yti-widget-item img {
    width: 100px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--yti-radius-sm);
    flex-shrink: 0;
}

.yti-widget-title {
    font-size: .85rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--yti-dark);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.yti-widget-duration {
    display: block;
    font-size: .75rem;
    color: var(--yti-muted);
    margin-top: 3px;
}

/* ── 响应式 ──────────────────────────────────────────────── */
@media (max-width: 768px) {

    .yti-cols-4,
    .yti-cols-5,
    .yti-cols-6 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 540px) {

    .yti-cols-3,
    .yti-cols-4,
    .yti-cols-5,
    .yti-cols-6 {
        grid-template-columns: repeat(2, 1fr);
    }

    .yti-scroll__item {
        flex: 0 0 220px;
    }
}

@media (max-width: 380px) {

    .yti-cols-2,
    .yti-cols-3,
    .yti-cols-4,
    .yti-cols-5,
    .yti-cols-6 {
        grid-template-columns: 1fr;
    }

    .yti-scroll__item {
        flex: 0 0 180px;
    }
}

/* ══════════════════════════════════════════════════════════════
   Lightbox 模态框（页面内视频播放器）
   ══════════════════════════════════════════════════════════════ */
.yti-lightbox-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: rgba(0, 0, 0, .88);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: yti-fade-in .22s ease;
    padding: 16px;
}

@keyframes yti-fade-in {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.yti-lightbox-inner {
    position: relative;
    width: 100%;
    max-width: 900px;
    animation: yti-scale-in .22s ease;
}

@keyframes yti-scale-in {
    from {
        transform: scale(.94);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

.yti-lightbox-video {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    background: #000;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .8);
}

.yti-lightbox-video iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.yti-lightbox-close {
    position: absolute;
    top: -46px;
    right: 0;
    background: rgba(255, 255, 255, .15);
    border: none;
    cursor: pointer;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .18s;
    padding: 0;
    color: #fff;
}

.yti-lightbox-close:hover {
    background: rgba(255, 255, 255, .30);
}

.yti-lightbox-close svg {
    width: 20px;
    height: 20px;
    fill: #fff;
}

body.yti-lb-open {
    overflow: hidden;
}