/* ============================================================
   Member Area — Unified Design System
   依附全局主题令牌（ThemePage.tsx 可配置），会员区与全站风格统一
   仅定义会员区专属的版式、间距、微交互，颜色全部走 CSS 变量
   ============================================================ */

/* ---------- Member Page Shell ---------- */
.mem-page {
    background: var(--background-color);
    min-height: 60vh;
    padding: 3rem 0;
}

/* ---------- Section Header ---------- */
.mem-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border-light);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.mem-section-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--heading-color);
    font-family: var(--heading-font);
    display: flex;
    align-items: center;
    gap: 0.65rem;
    margin: 0;
}

.mem-section-title::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 26px;
    background: linear-gradient(180deg, var(--accent-color), transparent);
    border-radius: 2px;
    flex-shrink: 0;
}

/* ---------- Shared Buttons ---------- */
.mem-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1.15rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--nav-font);
    cursor: pointer;
    transition: all 0.25s ease;
    border: 1px solid var(--color-border);
    background: var(--surface-color);
    color: var(--default-color);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.4;
}

.mem-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.mem-btn--primary {
    background: var(--accent-color);
    color: var(--contrast-color);
    border-color: transparent;
    font-weight: 600;
}

.mem-btn--primary:hover {
    background: color-mix(in srgb, var(--accent-color), black 12%);
    color: var(--contrast-color);
    box-shadow: 0 4px 16px color-mix(in srgb, var(--accent-color), transparent 70%);
}

.mem-btn--ghost {
    background: transparent;
    border-color: transparent;
    color: var(--color-text-muted);
}

.mem-btn--ghost:hover {
    background: var(--color-bg-light);
    color: var(--accent-color);
    border-color: transparent;
}

.mem-btn:disabled {
    opacity: 0.45;
    pointer-events: none;
}

/* ---------- Login Card ---------- */
.mem-login {
    max-width: 420px;
    margin: 0 auto;
}

.mem-login__card {
    background: var(--surface-color);
    border: 1px solid var(--color-border-light);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    box-shadow: 0 4px 24px var(--shadow-color);
    position: relative;
    overflow: hidden;
}

/* Accent top stripe */
.mem-login__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), color-mix(in srgb, var(--accent-color), transparent 60%));
    pointer-events: none;
}

.mem-login__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    margin: 0 auto 1.25rem;
    border-radius: 50%;
    background: color-mix(in srgb, var(--accent-color), transparent 88%);
    border: 1px solid color-mix(in srgb, var(--accent-color), transparent 75%);
}

.mem-login__icon i {
    font-size: 1.35rem;
    color: var(--accent-color);
}

.mem-login__title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--heading-color);
    font-family: var(--heading-font);
    text-align: center;
    margin-bottom: 0.25rem;
}

.mem-login__subtitle {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-align: center;
    margin-bottom: 1.75rem;
}

/* Form fields */
.mem-field {
    margin-bottom: 1.15rem;
}

.mem-field__label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--heading-color);
    margin-bottom: 0.4rem;
    font-family: var(--nav-font);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.mem-field__input {
    width: 100%;
    padding: 0.7rem 0.9rem;
    background: var(--background-color);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--default-color);
    font-size: 0.95rem;
    font-family: var(--default-font);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
    outline: none;
    box-sizing: border-box;
}

.mem-field__input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-color), transparent 80%);
}

.mem-field__input::placeholder {
    color: var(--color-text-muted);
}

.mem-field__input:disabled {
    opacity: 0.5;
}

/* Error alert */
.mem-alert {
    padding: 0.6rem 0.9rem;
    border-radius: 8px;
    font-size: 0.85rem;
    margin-bottom: 1.15rem;
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.mem-alert--error {
    background: color-mix(in srgb, var(--color-error), transparent 92%);
    border: 1px solid color-mix(in srgb, var(--color-error), transparent 75%);
    color: var(--color-error);
}

.mem-alert--error i {
    flex-shrink: 0;
}

/* ---------- Image Grid ---------- */
.mem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

@media (max-width: 991px) {
    .mem-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 575px) {
    .mem-grid { grid-template-columns: 1fr; }
}

/* Card */
.mem-card {
    background: var(--surface-color);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    position: relative;
}

.mem-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 32px var(--shadow-color);
    border-color: var(--accent-color);
}

.mem-card:active {
    transform: translateY(-2px);
}

/* Card image */
.mem-card__media {
    position: relative;
    overflow: hidden;
    background: var(--color-bg-light);
}

.mem-card__media img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.mem-card:hover .mem-card__media img {
    transform: scale(1.05);
}

/* Hover overlay */
.mem-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.55) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: flex-end;
    padding: 1rem;
}

.mem-card:hover .mem-card__overlay {
    opacity: 1;
}

.mem-card__overlay-text {
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--nav-font);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

/* Card body */
.mem-card__body {
    padding: 1.15rem;
}

.mem-card__title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--heading-color);
    font-family: var(--heading-font);
    margin-bottom: 0.55rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mem-card__meta {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.mem-card__meta-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-family: var(--default-font);
}

.mem-card__meta-item i {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* ---------- Empty State ---------- */
.mem-empty {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--color-text-muted);
}

.mem-empty__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border-light);
    margin-bottom: 1rem;
}

.mem-empty__icon i {
    font-size: 1.75rem;
    color: var(--color-text-secondary);
}

.mem-empty__text {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

/* ---------- Pagination ---------- */
.mem-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 2.5rem;
}

.mem-pagination__info {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    min-width: 100px;
    text-align: center;
}

/* ---------- Skeleton Loading ---------- */
@keyframes mem-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.mem-skeleton {
    background: linear-gradient(
        90deg,
        var(--color-bg-light) 0%,
        var(--surface-color) 50%,
        var(--color-bg-light) 100%
    );
    background-size: 200% 100%;
    animation: mem-shimmer 1.8s ease-in-out infinite;
    border-radius: 12px;
}

.mem-skeleton--header {
    height: 44px;
    margin-bottom: 1.75rem;
    border-radius: 8px;
}

/* Grid skeleton */
.mem-grid-skeleton {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

@media (max-width: 991px) {
    .mem-grid-skeleton { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 575px) {
    .mem-grid-skeleton { grid-template-columns: 1fr; }
}

.mem-card-skeleton {
    background: var(--surface-color);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    overflow: hidden;
}

.mem-card-skeleton__media {
    aspect-ratio: 4 / 3;
    background: linear-gradient(
        90deg,
        var(--color-bg-light) 0%,
        var(--surface-color) 50%,
        var(--color-bg-light) 100%
    );
    background-size: 200% 100%;
    animation: mem-shimmer 1.8s ease-in-out infinite;
}

.mem-card-skeleton__body {
    padding: 1.15rem;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.mem-skeleton-line {
    height: 13px;
    border-radius: 4px;
}
.mem-skeleton-line--w70 { width: 70%; }
.mem-skeleton-line--w50 { width: 50%; }
.mem-skeleton-line--w40 { width: 40%; }

/* ---------- Image Detail ---------- */
.mem-detail {
    background: var(--background-color);
    padding: 2rem 0;
    min-height: 50vh;
}

/* Top bar */
.mem-detail__bar {
    position: sticky;
    top: 0;
    z-index: 1020;
    background: color-mix(in srgb, var(--surface-color), transparent 5%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    padding: 0.7rem 0;
}

.mem-detail__bar-inner {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.mem-detail__bar-inner .flex-grow-1 {
    flex: 1;
    min-width: 0;
}

.mem-detail__bar-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--heading-color);
    font-family: var(--heading-font);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin: 0;
}

.mem-detail__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.25rem 0.7rem;
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 500;
    font-family: var(--nav-font);
    white-space: nowrap;
}

.mem-detail__badge--info {
    background: var(--color-bg-light);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border-light);
}

.mem-detail__badge--zoom {
    background: color-mix(in srgb, var(--accent-color), transparent 88%);
    color: var(--accent-color);
    border: 1px solid color-mix(in srgb, var(--accent-color), transparent 70%);
}

/* Image viewer */
.mem-viewer {
    padding: 2rem 0;
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.mem-viewer__stage {
    transition: transform 0.2s ease;
    transform-origin: top center;
    max-width: 100%;
}

.mem-viewer__stage img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
    border-radius: 8px;
    box-shadow: 0 8px 32px var(--shadow-color);
    user-select: none;
    -webkit-user-drag: none;
}

/* Description card */
.mem-desc-card {
    background: var(--surface-color);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    max-width: 100%;
    margin: 1.75rem auto 0;
    padding: 1.25rem 1.5rem;
}

.mem-desc-card__title {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--heading-color);
    font-family: var(--nav-font);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.6rem;
}

.mem-desc-card__text {
    color: var(--default-color);
    font-size: 0.95rem;
    line-height: 1.7;
    white-space: pre-wrap;
    margin: 0;
}

/* Detail skeleton */
.mem-detail-skeleton {
    padding: 2rem 0;
}

.mem-detail-skeleton__bar {
    height: 52px;
    margin-bottom: 1.75rem;
}

.mem-detail-skeleton__image {
    height: 400px;
    border-radius: 8px;
}

/* ---------- Non-image card media (SVG icons) ---------- */
.mem-card__media-fallback {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    background: var(--color-bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.mem-card:hover .mem-card__media-fallback {
    background: color-mix(in srgb, var(--accent-color), transparent 94%);
}

.mem-card__media--video .mem-card__media-badge {
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--accent-color), transparent 20%);
    color: var(--contrast-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

/* ---------- File size ---- */
.mem-card__meta-size {
    font-weight: 500;
    color: var(--accent-color) !important;
}

/* ---------- Detail metadata row ---------- */
.mem-detail__meta-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

/* ---------- Video player ---------- */
.mem-video-player {
    max-width: 100%;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 8px 32px var(--shadow-color);
}

/* ---------- File info card (non-image/video detail) ---------- */
.mem-file-card {
    background: var(--surface-color);
    border: 1px solid var(--color-border-light);
    border-radius: 16px;
    max-width: 480px;
    margin: 0 auto;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 4px 24px var(--shadow-color);
    position: relative;
    overflow: hidden;
}

.mem-file-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), color-mix(in srgb, var(--accent-color), transparent 60%));
    pointer-events: none;
}

.mem-file-card__icon {
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
}

.mem-file-card__name {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--heading-color);
    font-family: var(--heading-font);
    margin: 0 0 0.75rem;
    word-break: break-all;
}

.mem-file-card__meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* ---------- Responsive ---------- */
@media (max-width: 767px) {
    .mem-login__card {
        padding: 2rem 1.25rem;
    }

    .mem-section-title {
        font-size: 1.15rem;
    }

    .mem-detail__bar-inner {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .mem-pagination__info {
        min-width: auto;
        font-size: 0.78rem;
    }
}