:root {
    --font-display: "Trebuchet MS", "Segoe UI", sans-serif;
    --font-body: "Verdana", "PingFang SC", "Microsoft YaHei", sans-serif;
    --bg: #f6f8fb;
    --panel: rgba(255, 255, 255, 0.92);
    --panel-strong: rgba(255, 255, 255, 0.98);
    --text: #16263d;
    --text-soft: #6f8097;
    --primary: #1778f2;
    --primary-strong: #0d5fca;
    --accent: #ff8747;
    --border: rgba(22, 38, 61, 0.08);
    --shadow: 0 18px 40px rgba(22, 38, 61, 0.10);
    --shadow-soft: 0 10px 24px rgba(22, 38, 61, 0.07);
    --radius-xl: 24px;
    --radius-lg: 18px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --transition: 220ms ease;
}

body.theme-dark {
    --bg: #0a1220;
    --panel: rgba(15, 25, 41, 0.92);
    --panel-strong: rgba(12, 21, 35, 0.98);
    --text: #edf4ff;
    --text-soft: #95a6bd;
    --primary: #61abff;
    --primary-strong: #87beff;
    --accent: #ff9a66;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: 0 20px 46px rgba(0, 0, 0, 0.34);
    --shadow-soft: 0 12px 24px rgba(0, 0, 0, 0.24);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(23, 120, 242, 0.12), transparent 26%),
        radial-gradient(circle at top right, rgba(255, 135, 71, 0.10), transparent 22%),
        var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    transition: background-color var(--transition), color var(--transition);
}

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

button,
input,
select,
a {
    font: inherit;
}

.page-shell {
    width: min(1320px, calc(100% - 28px));
    margin: 0 auto;
    padding: 18px 0 36px;
}

.hero,
.toolbar,
.empty-state,
.pager {
    border: 1px solid var(--border);
    background: var(--panel);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.hero {
    padding: 18px 20px;
    border-radius: var(--radius-xl);
}

.hero__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
}

.hero__eyebrow {
    margin: 0 0 8px;
    color: var(--primary);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-size: 0.72rem;
    font-weight: 700;
}

.hero h1 {
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 4vw, 2.8rem);
    line-height: 1;
}

.hero__desc {
    margin: 8px 0 0;
    color: var(--text-soft);
    font-size: 0.92rem;
    line-height: 1.5;
}

.theme-toggle,
.btn,
.chip,
.action-btn,
.video-sound-btn {
    border: none;
    border-radius: 999px;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), color var(--transition), border-color var(--transition);
}

.theme-toggle,
.btn,
.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle {
    min-height: 44px;
    padding: 0 16px;
    color: var(--text);
    border: 1px solid var(--border);
    background: var(--panel-strong);
}

.toolbar {
    position: sticky;
    top: 10px;
    z-index: 5;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin: 14px 0 10px;
    padding: 12px 14px;
    border-radius: var(--radius-lg);
}

.filters,
.toolbar__controls,
.media-card__actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.chip {
    min-height: 38px;
    padding: 0 14px;
    color: var(--text-soft);
    background: transparent;
    border: 1px solid var(--border);
}

.chip.is-active {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(135deg, var(--accent), var(--primary));
}

.search-box,
.sort-box {
    min-width: min(100%, 220px);
}

.search-box input,
.sort-box select {
    width: 100%;
    min-height: 42px;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--panel-strong);
    color: var(--text);
    outline: none;
}

.toolbar__refresh,
.btn {
    min-height: 42px;
    padding: 0 16px;
}

.btn--ghost {
    color: var(--text);
    border: 1px solid var(--border);
    background: var(--panel-strong);
}

.page-message {
    min-height: 24px;
    margin: 4px 0 16px;
    color: var(--text-soft);
}

.notice-inline {
    margin: -6px 0 14px;
    color: var(--text-soft);
    font-size: 0.78rem;
    line-height: 1.5;
    text-align: right;
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 14px;
}

.media-card {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--panel);
    box-shadow: var(--shadow-soft);
    transition: transform var(--transition), box-shadow var(--transition);
}

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

.media-card__media {
    position: relative;
    aspect-ratio: 4 / 5;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(23, 120, 242, 0.12), rgba(255, 135, 71, 0.10));
}

.media-card__media img,
.media-card__media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media-card__content {
    padding: 12px;
}

.media-card__title-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
}

.media-card__title {
    margin: 0;
    font-size: 0.96rem;
    line-height: 1.45;
    word-break: break-word;
}

.media-card__badge {
    flex: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 24px;
    padding: 0 10px;
    border-radius: 999px;
    color: var(--accent);
    background: rgba(255, 135, 71, 0.12);
    font-size: 0.74rem;
    font-weight: 700;
}

.media-card__time {
    margin: 8px 0 0;
    color: var(--text-soft);
    font-size: 0.78rem;
}

.media-card__actions {
    margin-top: 10px;
}

.action-btn {
    min-height: 34px;
    padding: 0 12px;
    font-size: 0.82rem;
    text-decoration: none;
}

.action-btn--view,
.action-btn--download {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-strong));
}

.action-btn--full {
    color: var(--text);
    border: 1px solid var(--border);
    background: var(--panel-strong);
}

.video-shell {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

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

.video-sound-btn {
    position: absolute;
    z-index: 1;
    color: #fff;
    background: rgba(7, 12, 24, 0.58);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.video-sound-btn {
    right: 10px;
    top: 10px;
    min-height: 30px;
    padding: 0 10px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 0.76rem;
}

.broken-box {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
    padding: 18px;
    color: var(--text-soft);
    text-align: center;
}

.empty-state,
.pager {
    margin-top: 18px;
    padding: 18px;
    border-radius: var(--radius-lg);
    text-align: center;
    color: var(--text-soft);
}

.pager {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.pager[hidden],
.empty-state[hidden],
.lightbox[hidden] {
    display: none !important;
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 20;
    display: grid;
    place-items: center;
    padding: 16px;
    background: rgba(4, 10, 20, 0.82);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.lightbox__body {
    width: min(92vw, 1180px);
    max-height: 86vh;
    border-radius: 18px;
    overflow: hidden;
    background: #050812;
    box-shadow: var(--shadow);
}

.lightbox__body img,
.lightbox__body video {
    width: 100%;
    max-height: 86vh;
    object-fit: contain;
}

.lightbox__close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(7, 12, 24, 0.54);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 900px) {
    .page-shell {
        width: min(100% - 18px, 1320px);
    }

    .hero__content,
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar {
        position: static;
    }

    .toolbar__controls {
        justify-content: stretch;
    }
}

@media (max-width: 640px) {
    .page-shell {
        width: min(100% - 14px, 1320px);
        padding: 10px 0 18px;
    }

    .hero,
    .toolbar,
    .empty-state,
    .pager {
        border-radius: 16px;
        padding: 12px;
    }

    .hero h1 {
        font-size: 1.34rem;
    }

    .hero__desc {
        font-size: 0.82rem;
    }

    .notice-inline {
        margin: -2px 0 12px;
        font-size: 0.72rem;
        line-height: 1.45;
        text-align: left;
    }

    .media-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }

    .media-card__content {
        padding: 10px;
    }

    .media-card__title {
        font-size: 0.88rem;
        line-height: 1.34;
    }

    .media-card__time {
        font-size: 0.74rem;
    }

    .media-card__actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }

    .action-btn {
        min-height: 34px;
        padding: 0 8px;
        font-size: 0.78rem;
    }

    .search-box,
    .sort-box,
    .toolbar__refresh {
        width: 100%;
        min-width: 100%;
    }
}