/* =========================================================
   过渡动画 / 动效层
   单独成文件，方便整体开关：删掉 index.html 里对它的引用即可全部关闭。
   ========================================================= */

/* ---------- 关键帧 ---------- */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(14px);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(.96);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* ---------- 壁纸淡入（避免一进页面就"啪"地亮起来） ---------- */
.bgo {
    animation: fadeIn 1s ease both;
}

/* ---------- 首屏入场：依次浮现，形成节奏 ---------- */
.hero-greet {
    animation: fadeUp .62s cubic-bezier(.22, .61, .36, 1) .05s both;
}

.s-search form {
    animation: fadeUp .62s cubic-bezier(.22, .61, .36, 1) .14s both;
}

/* #menu 自带 transform: scale(.8)，只动透明度，避免覆盖它 */
#menu {
    animation: fadeIn .5s ease .22s both;
}

.site-footer {
    animation: fadeUp .62s cubic-bezier(.22, .61, .36, 1) .26s both;
}

/* ---------- 搜索框：聚焦时轻微上浮 ---------- */
#search-text,
#kos {
    transition: background-color .25s ease, border-color .25s ease,
        box-shadow .25s ease, transform .25s ease;
}

#search-text:focus,
#kos:focus {
    transform: translateY(-1px);
}

/* 搜索源下拉：悬停展开时轻微缩放淡入（display 由 .s-type:hover 控制） */
.s-type:hover .s-type-list {
    animation: popIn .18s ease both;
}

/* 搜索源标签悬停微浮起 */
.s-type-list label {
    transition: color .2s ease, transform .2s ease;
}

.s-type-list label:hover {
    transform: translateX(2px);
}

/* ---------- 侧边面板：更顺滑的滑入曲线 ---------- */
.list {
    transition: transform .38s cubic-bezier(.32, .72, 0, 1),
        box-shadow .38s ease;
    will-change: transform;
}

.panel-mask {
    transition: opacity .38s ease;
}

/* 面板条目悬停时轻微右移 */
.panel-links li a:hover {
    transform: translateX(2px);
}

/* ---------- 分类折叠：高度过渡（取代原来的 display:none 硬切换） ----------
   --links-h 由 js/panel.js 量出实际高度后写入；
   未测量到时用 3000px 兜底，行为仍然正确，只是收起时前段看不出变化。 */
.panel-links {
    overflow: hidden;
    max-height: var(--links-h, 3000px);
    transition: max-height .3s cubic-bezier(.4, 0, .2, 1), opacity .22s ease;
}

.panel-sec.is-collapsed .panel-links {
    max-height: 0;
    opacity: 0;
}

/* 搜索时强制展开（覆盖折叠） */
.list.filtering .panel-sec.is-collapsed .panel-links {
    max-height: var(--links-h, 3000px);
    opacity: 1;
}

/* ---------- 尊重系统的"减少动态效果"设置 ---------- */
@media (prefers-reduced-motion: reduce) {

    .bgo,
    .hero-greet,
    .s-search form,
    #menu,
    .site-footer,
    .s-type:hover .s-type-list {
        animation: none !important;
    }

    #search-text,
    #kos,
    .list,
    .panel-mask,
    .panel-links,
    .panel-links li a,
    .s-type-list label {
        transition: none !important;
    }

    #search-text:focus,
    #kos:focus,
    .panel-links li a:hover,
    .s-type-list label:hover {
        transform: none !important;
    }
}

/* ---------- 随机站点骰子 ---------- */
#search form {
    position: relative;
}

#search button.search-random {
    position: absolute;
    top: 0;
    right: 5px;
    left: auto !important;
    z-index: 2;
    display: grid;
    width: 42px;
    height: 50px;
    place-items: center;
    padding: 0;
    color: #fff;
    font-size: 19px;
    border: 0;
    border-radius: 0 10px 10px 0;
    background: transparent;
    cursor: pointer;
    transition: transform .2s ease, background-color .2s ease;
}

.search-random:hover {
    transform: rotate(18deg) scale(1.08);
    background: rgba(255, 255, 255, .12);
}

.search-random:active {
    transform: rotate(90deg) scale(.94);
}

/* 为右侧骰子留空间，搜索文字不进入按钮下方 */
#search-text {
    padding-right: 56px;
}

/* ---------- Toast ---------- */
.fun-toast {
    position: fixed;
    bottom: 64px;
    left: 50%;
    z-index: 10001;
    max-width: min(84vw, 420px);
    padding: 10px 16px;
    color: #fff;
    font-size: 13px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, .2);
    border-radius: 8px;
    background: rgba(18, 20, 25, .82);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, .24);
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 8px);
    transition: opacity .2s ease, transform .2s ease;
}

.fun-toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* ---------- Konami 彩蛋：星屑爆发 ---------- */
.easter-burst {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: grid;
    overflow: hidden;
    place-items: center;
    pointer-events: none;
    animation: easter-fade 1.65s ease both;
}

.easter-title {
    color: #fff;
    font-size: 24px;
    font-weight: 600;
    text-shadow: 0 2px 24px rgba(255, 255, 255, .7), 0 4px 28px rgba(40, 130, 255, .7);
    animation: easter-title .55s cubic-bezier(.2, .8, .2, 1) both;
}

.easter-spark {
    position: absolute;
    top: 50%;
    left: 50%;
    color: hsl(var(--hue, 0), 95%, 76%);
    font-size: 20px;
    font-style: normal;
    text-shadow: 0 0 14px currentColor;
    animation: easter-spark .9s cubic-bezier(.15, .7, .25, 1) var(--delay) both;
}

@keyframes easter-fade {
    0%, 75% { opacity: 1; }
    100% { opacity: 0; }
}

@keyframes easter-title {
    from { opacity: 0; transform: scale(.7) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes easter-spark {
    from { opacity: 0; transform: rotate(var(--angle)) translateY(0) scale(.4); }
    18% { opacity: 1; }
    to { opacity: 0; transform: rotate(var(--angle)) translateY(var(--distance)) scale(1.2); }
}

/* ---------- 背景轻视差 ---------- */
.bgo {
    transform: translate3d(var(--parallax-x, 0px), var(--parallax-y, 0px), 0) scale(1.035);
    transition: transform .18s ease-out;
    will-change: transform;
}

/* ---------- 数字翻牌时钟 ---------- */
.greet-time {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-height: 1.1em;
    perspective: 500px;
}

.flip-cell,
.time-colon {
    position: relative;
    display: inline-grid;
    width: .64em;
    height: 1.08em;
    overflow: hidden;
    place-items: center;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.time-colon {
    width: .3em;
    overflow: visible;
    animation: colon-pulse 1s steps(2, start) infinite;
}

.flip-cell.is-flipping {
    overflow: visible;
}

.flip-face {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    backface-visibility: hidden;
    transform-origin: center center;
}

.flip-old {
    animation: flip-out .36s ease-in both;
}

.flip-new {
    opacity: 0;
    transform: rotateX(90deg);
    animation: flip-in .36s ease-out both;
}

@keyframes flip-out {
    to { opacity: .15; transform: rotateX(-90deg); }
}

@keyframes flip-in {
    to { opacity: 1; transform: rotateX(0); }
}

@keyframes colon-pulse {
    to { opacity: .45; }
}

@media (max-width: 640px) {
    .search-random {
        right: 3px;
        width: 38px;
    }

    .easter-title {
        font-size: 20px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .bgo {
        transform: none !important;
        transition: none !important;
        will-change: auto;
    }

    .search-random,
    .fun-toast,
    .flip-cell,
    .time-colon,
    .flip-face,
    .easter-burst,
    .easter-title,
    .easter-spark {
        animation: none !important;
        transition: none !important;
    }

    .search-random:hover,
    .search-random:active {
        transform: none !important;
    }
}

/* 首屏加载遮罩已按需求移除（连同 js/boot.js），页面直接显示搜索区 */