/* ==================================================================
 * 主頁修行手札動態流 · moments-feed.css
 * ------------------------------------------------------------------
 * 視覺意象：「祭壇」之後鋪展一卷「文人案頭手札」
 *   - 左側時間軸縱貫，每張卡片如同貼附其上的札記
 *   - 卡片含宣紙肌理 + 雙線書頁邊框 + 右下朱印封緘
 *   - 香煙裊裊過渡銜接上方服務選單
 *
 * 全部 class 採 .scroll-* 前綴，避開既有 .mm-* / .altar-*。
 * 全部色彩走主題變數，自動跟隨 12 個主題切換。
 * ==================================================================*/

/* ── 過渡區：服務選單 → 時間軸 ──────────────────────────────── */
.altar-to-scroll-transition {
    position: relative;
    width: 100%;
    max-width: 720px;
    height: 42px;
    margin: 8px auto 0;
    pointer-events: none;
}
.altar-to-scroll-transition .altar-to-scroll-smoke {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 200px 28px at 50% 30%,
            color-mix(in srgb, var(--accent) 16%, transparent),
            transparent 70%),
        radial-gradient(ellipse 110px 18px at 50% 78%,
            color-mix(in srgb, var(--accent) 8%, transparent),
            transparent 65%);
    filter: blur(7px);
    opacity: .85;
}
.altar-to-scroll-transition .altar-to-scroll-rule {
    position: absolute;
    left: 50%;
    top: 18px;
    bottom: -4px;
    width: 1px;
    background: linear-gradient(180deg,
        transparent 0%,
        color-mix(in srgb, var(--border-strong) 35%, transparent) 40%,
        color-mix(in srgb, var(--border-strong) 70%, transparent) 100%);
}

/* ── 區段標題：道家匾額感 ──────────────────────────────────── */
.scroll-section {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    padding: 0 8px;
    font-family: var(--font-taoist, serif);
}
.scroll-section-header {
    text-align: center;
    padding: 4px 12px 18px;
}
.scroll-section-title {
    margin: 0;
    font-size: clamp(1.2rem, 2.4vw, 1.45rem);
    font-weight: 700;
    letter-spacing: .32em;
    color: var(--text-accent, var(--accent));
    text-shadow: 0 0 14px var(--glow-primary);
    display: inline-flex;
    align-items: center;
    gap: 16px;
}
.scroll-section-title::before,
.scroll-section-title::after {
    content: "";
    width: 28px;
    height: 1px;
    background: linear-gradient(90deg,
        transparent,
        color-mix(in srgb, var(--accent) 55%, transparent),
        transparent);
}
.scroll-section-title > span {
    display: inline-block;
}
.scroll-section-sub {
    margin: 6px 0 0;
    font-size: 12px;
    letter-spacing: .22em;
    color: var(--muted);
    font-style: italic;
    opacity: .75;
}

/* ── 動態列表：時間軸主線 ──────────────────────────────────── */
.scroll-feed {
    position: relative;
    padding: 0 4px 0 4px;
    isolation: isolate;
}
.scroll-feed::before {
    content: "";
    position: absolute;
    left: 22px;
    top: 4px;
    bottom: -6px;
    width: 1px;
    background: linear-gradient(180deg,
        transparent 0,
        color-mix(in srgb, var(--border-strong) 30%, transparent) 4%,
        color-mix(in srgb, var(--border-strong) 65%, transparent) 50%,
        color-mix(in srgb, var(--border-strong) 30%, transparent) 96%,
        transparent 100%);
    z-index: 0;
}

/* ── 日期分隔（今日 / 昨日 / 本週 / N 月）────────────────── */
.scroll-divider {
    position: relative;
    padding: 22px 0 16px 64px;
    display: flex;
    align-items: center;
    gap: 14px;
    z-index: 1;
}
.scroll-divider::before {
    content: "";
    position: absolute;
    left: 12px;
    top: 26px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background:
        radial-gradient(circle,
            color-mix(in srgb, var(--accent) 75%, transparent) 0%,
            color-mix(in srgb, var(--accent) 45%, transparent) 38%,
            transparent 70%);
    box-shadow:
        0 0 0 5px var(--bg-primary, #000),
        0 0 18px var(--glow-intense);
}
.scroll-divider-label {
    font-size: 13px;
    letter-spacing: .28em;
    color: var(--text-accent, var(--accent));
    white-space: nowrap;
    padding: 5px 14px;
    border: 1px solid color-mix(in srgb, var(--border-strong) 60%, transparent);
    border-radius: 999px;
    background: color-mix(in srgb, var(--bg-primary) 80%, var(--accent) 6%);
    backdrop-filter: blur(2px);
    text-shadow: 0 0 8px var(--glow-primary);
}
.scroll-divider-rule {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg,
        color-mix(in srgb, var(--border) 90%, transparent),
        transparent);
}

/* ── 手記卡片 ─────────────────────────────────────────────── */
.scroll-entry {
    position: relative;
    padding: 0 0 28px 64px;
    z-index: 1;
    opacity: 0;
    transform: translateY(14px);
    animation: scroll-entry-rise .58s ease-out forwards;
}
@keyframes scroll-entry-rise {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 時間軸節點：發光圓圈 */
.scroll-entry-node {
    position: absolute;
    left: 14px;
    top: 26px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background:
        radial-gradient(circle,
            color-mix(in srgb, var(--accent) 80%, transparent) 0%,
            color-mix(in srgb, var(--accent) 25%, transparent) 55%,
            transparent 75%);
    border: 1px solid color-mix(in srgb, var(--accent) 60%, transparent);
    box-shadow:
        0 0 0 4px var(--bg-primary, #000),
        0 0 12px var(--glow-primary);
    z-index: 2;
    transition: box-shadow .35s ease, transform .35s ease;
}
.scroll-entry:hover .scroll-entry-node {
    transform: scale(1.15);
    box-shadow:
        0 0 0 4px var(--bg-primary, #000),
        0 0 22px var(--glow-intense),
        0 0 36px var(--glow-primary);
}

/* 卡片本體：宣紙肌理 + 書頁堆疊感 */
.scroll-entry-card {
    position: relative;
    border: 1px solid var(--border);
    border-radius: 12px;
    background:
        radial-gradient(ellipse 70% 40% at 12% 0%,
            color-mix(in srgb, var(--accent) 5%, transparent),
            transparent 60%),
        radial-gradient(ellipse 55% 50% at 100% 100%,
            color-mix(in srgb, var(--text-accent) 4%, transparent),
            transparent 65%),
        linear-gradient(180deg,
            color-mix(in srgb, var(--card) 94%, var(--accent) 3%) 0%,
            color-mix(in srgb, var(--card-2, var(--card)) 96%, transparent) 100%);
    box-shadow:
        0 2px 0 color-mix(in srgb, var(--accent) 18%, transparent),
        var(--shadow-md);
    overflow: hidden;
    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal),
        border-color var(--transition-normal);
}

/* 雙線邊框：內層虛線，書頁鎖線 */
.scroll-entry-card::before {
    content: "";
    position: absolute;
    inset: 6px;
    border: 1px dashed color-mix(in srgb, var(--border) 55%, transparent);
    border-radius: 7px;
    pointer-events: none;
    z-index: 1;
}

/* 右下朱印「易」 */
.scroll-entry-card::after {
    content: "易";
    position: absolute;
    right: 14px;
    bottom: 12px;
    width: 30px;
    height: 30px;
    font-family: var(--font-taoist, serif);
    font-size: 17px;
    font-weight: 900;
    color: #f5e1b8;
    background: linear-gradient(135deg, #a02018 0%, #7a1410 100%);
    border: 1.5px solid #5a0c0a;
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: rotate(4deg);
    box-shadow:
        inset 0 0 3px rgba(0, 0, 0, .4),
        inset 0 0 6px rgba(0, 0, 0, .18),
        0 1px 2px rgba(0, 0, 0, .5);
    opacity: .82;
    pointer-events: none;
    letter-spacing: 0;
    z-index: 2;
    transition: transform .4s ease, opacity .25s ease;
}

.scroll-entry-card:hover {
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
    box-shadow:
        0 2px 0 color-mix(in srgb, var(--accent) 28%, transparent),
        var(--shadow-lg);
}
.scroll-entry-card:hover::after {
    transform: rotate(2deg) scale(1.05);
    opacity: .94;
}

/* ── 配圖 ─────────────────────────────────────────────────── */
.scroll-entry-figure {
    display: block;
    width: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: zoom-in;
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-bottom: 1px solid color-mix(in srgb, var(--border) 65%, transparent);
}
.scroll-entry-figure img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    transition: transform var(--transition-slow);
    filter: saturate(.96) contrast(1.02);
}
.scroll-entry-figure-mask {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
        transparent 55%,
        color-mix(in srgb, var(--bg-primary) 22%, transparent) 100%);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-normal);
}
.scroll-entry-figure-zoom {
    position: absolute;
    right: 12px;
    bottom: 12px;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--bg-primary) 72%, transparent);
    color: var(--text-accent, var(--accent));
    backdrop-filter: blur(6px);
    border: 1px solid color-mix(in srgb, var(--border-strong) 55%, transparent);
    font-size: 14px;
    opacity: 0;
    transform: translateY(6px);
    transition:
        opacity var(--transition-normal),
        transform var(--transition-normal);
}
.scroll-entry-figure:hover img {
    transform: scale(1.035);
}
.scroll-entry-figure:hover .scroll-entry-figure-mask {
    opacity: 1;
}
.scroll-entry-figure:hover .scroll-entry-figure-zoom {
    opacity: 1;
    transform: translateY(0);
}
.scroll-entry-figure:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -3px;
}

/* ── 正文 ─────────────────────────────────────────────────── */
.scroll-entry-body {
    padding: 18px 64px 12px 22px;
    position: relative;
    z-index: 1;
}
.scroll-entry-text {
    font-family: var(--font-taoist, serif);
    font-size: 15.5px;
    line-height: 1.95;
    letter-spacing: .04em;
    color: var(--text-primary, var(--text));
    margin: 0;
    white-space: pre-wrap;
    word-break: break-word;

    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
    transition: -webkit-line-clamp .2s ease;
}
.scroll-entry-body.is-expanded .scroll-entry-text {
    -webkit-line-clamp: unset;
    display: block;
    overflow: visible;
}
.scroll-entry-expand {
    background: transparent;
    border: 0;
    margin-top: 10px;
    padding: 4px 0;
    font-family: var(--font-taoist, serif);
    font-size: 12.5px;
    letter-spacing: .22em;
    color: var(--text-accent, var(--accent));
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color var(--transition-fast);
}
.scroll-entry-expand:hover {
    color: var(--accent);
    text-shadow: 0 0 6px var(--glow-primary);
}
.scroll-entry-expand i {
    transition: transform var(--transition-normal);
}
.scroll-entry-body.is-expanded .scroll-entry-expand i {
    transform: rotate(180deg);
}

/* ── 卡片底部：署名 + 時間 ────────────────────────────────── */
.scroll-entry-meta {
    padding: 0 64px 14px 22px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-taoist, serif);
    font-size: 12px;
    color: var(--muted);
    letter-spacing: .12em;
    position: relative;
    z-index: 1;
}
.scroll-entry-seal {
    color: var(--text-accent, var(--accent));
    font-weight: 700;
    letter-spacing: .18em;
}
.scroll-entry-dot {
    opacity: .55;
}
.scroll-entry-time {
    cursor: help;
    font-variant-numeric: tabular-nums;
    color: var(--text-secondary, var(--muted));
}

/* ── 空狀態 ──────────────────────────────────────────────── */
.scroll-empty {
    text-align: center;
    color: var(--muted);
    padding: 60px 16px 20px;
    font-family: var(--font-taoist, serif);
    font-size: 14px;
    letter-spacing: .12em;
}
.scroll-empty i {
    display: block;
    font-size: 32px;
    color: var(--text-accent, var(--accent));
    opacity: .55;
    margin-bottom: 14px;
    text-shadow: 0 0 14px var(--glow-primary);
}
.scroll-empty p {
    margin: 0;
}

/* ── 載入區（sentinel / loader / end / error）─────────────── */
.scroll-end-zone {
    position: relative;
    padding: 8px 0 60px 64px;
    text-align: center;
    z-index: 1;
}
.scroll-sentinel {
    height: 1px;
    width: 100%;
    pointer-events: none;
}

.scroll-loader {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    padding: 22px 0;
    color: var(--muted);
    font-family: var(--font-taoist, serif);
    font-size: 13px;
    letter-spacing: .25em;
}
.scroll-loader p {
    margin: 0;
}
.scroll-loader-spark {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--glow-primary);
    animation: scroll-spark 1.4s ease-in-out infinite;
}
.scroll-loader-spark:nth-child(2) {
    animation-delay: .18s;
}
.scroll-loader-spark:nth-child(3) {
    animation-delay: .36s;
}
@keyframes scroll-spark {
    0%, 100% {
        opacity: .3;
        transform: scale(.7);
    }
    50% {
        opacity: 1;
        transform: scale(1.25);
        box-shadow: 0 0 14px var(--glow-intense);
    }
}

.scroll-end {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 30px 0 8px;
    color: var(--muted);
    font-family: var(--font-taoist, serif);
    font-size: 12.5px;
    letter-spacing: .32em;
}
.scroll-end-rule {
    width: 86px;
    height: 1px;
    background: linear-gradient(90deg,
        transparent,
        color-mix(in srgb, var(--border-strong) 70%, transparent),
        transparent);
}
.scroll-end-text {
    opacity: .85;
}

.scroll-error {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 18px;
    padding: 10px 18px;
    border: 1px solid color-mix(in srgb, #c0392b 40%, var(--border));
    border-radius: 10px;
    background: color-mix(in srgb, #c0392b 8%, var(--card));
    font-family: var(--font-taoist, serif);
    font-size: 13px;
    color: var(--text-secondary, var(--text));
    letter-spacing: .1em;
}
.scroll-error i {
    color: #e8a89f;
    font-size: 15px;
}
.scroll-error button {
    border: 1px solid color-mix(in srgb, var(--accent) 60%, transparent);
    background: transparent;
    color: var(--text-accent, var(--accent));
    padding: 4px 12px;
    border-radius: 6px;
    font-family: inherit;
    font-size: 12.5px;
    letter-spacing: .15em;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}
.scroll-error button:hover {
    background: color-mix(in srgb, var(--accent) 18%, transparent);
    color: var(--accent);
}

/* ── Lightbox（圖片燈箱）─────────────────────────────────── */
.scroll-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px;
    background: color-mix(in srgb, var(--bg-primary) 88%, #000);
    backdrop-filter: blur(14px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .28s ease;
}
.scroll-lightbox.is-open {
    opacity: 1;
    pointer-events: auto;
}
.scroll-lightbox-frame {
    max-width: min(94vw, 1200px);
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    transform: scale(.94);
    transition: transform .35s cubic-bezier(.2, .8, .2, 1);
}
.scroll-lightbox.is-open .scroll-lightbox-frame {
    transform: scale(1);
}
.scroll-lightbox-image {
    max-width: 100%;
    max-height: 78vh;
    display: block;
    border: 1px solid color-mix(in srgb, var(--border-strong) 80%, transparent);
    box-shadow: 0 24px 64px rgba(0, 0, 0, .72);
    background: var(--bg-primary, #000);
}
.scroll-lightbox-caption {
    max-width: 720px;
    margin: 0;
    text-align: center;
    font-family: var(--font-taoist, serif);
    font-size: 14px;
    color: var(--text-secondary, var(--text));
    line-height: 1.85;
    letter-spacing: .04em;
    white-space: pre-wrap;
}
.scroll-lightbox-close {
    position: fixed;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid color-mix(in srgb, var(--border-strong) 60%, transparent);
    background: color-mix(in srgb, var(--bg-primary) 70%, transparent);
    color: var(--text-accent, var(--accent));
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(6px);
    transition: background var(--transition-fast), transform var(--transition-fast);
}
.scroll-lightbox-close:hover {
    background: color-mix(in srgb, var(--accent) 22%, transparent);
    transform: rotate(90deg);
}

/* ── 響應式（≤ 720px）────────────────────────────────────── */
@media (max-width: 720px) {
    .scroll-section {
        max-width: 100%;
        padding: 0 4px;
    }
    .scroll-section-header {
        padding: 12px 8px 22px;
    }
    .scroll-section-title {
        letter-spacing: .28em;
        gap: 12px;
    }
    .scroll-section-title::before,
    .scroll-section-title::after {
        width: 20px;
    }
    .scroll-section-sub {
        letter-spacing: .18em;
    }

    .scroll-feed::before {
        left: 14px;
        bottom: -4px;
    }

    .scroll-divider {
        padding: 18px 0 14px 44px;
    }
    .scroll-divider::before {
        left: 4px;
        top: 22px;
        width: 20px;
        height: 20px;
    }
    .scroll-divider-label {
        font-size: 12px;
        padding: 4px 12px;
        letter-spacing: .22em;
    }

    .scroll-entry {
        padding: 0 0 22px 44px;
    }
    .scroll-entry-node {
        left: 5px;
        top: 22px;
        width: 16px;
        height: 16px;
    }

    .scroll-entry-card::before {
        inset: 5px;
        border-radius: 6px;
    }
    .scroll-entry-card::after {
        right: 10px;
        bottom: 10px;
        width: 25px;
        height: 25px;
        font-size: 14px;
    }

    .scroll-entry-body {
        padding: 14px 50px 10px 16px;
    }
    .scroll-entry-text {
        font-size: 14.5px;
        line-height: 1.85;
    }
    .scroll-entry-meta {
        padding: 0 50px 12px 16px;
        font-size: 11.5px;
    }

    .scroll-end-zone {
        padding: 8px 0 48px 44px;
    }

    .scroll-lightbox {
        padding: 16px;
    }
    .scroll-lightbox-close {
        top: 12px;
        right: 12px;
        width: 38px;
        height: 38px;
        font-size: 18px;
    }
}

/* ── 無障礙：尊重減少動畫偏好 ─────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .scroll-entry {
        animation: none;
        opacity: 1;
        transform: none;
    }
    .scroll-entry-card,
    .scroll-entry-figure img,
    .scroll-entry-node,
    .scroll-lightbox,
    .scroll-lightbox-frame,
    .scroll-entry-card::after,
    .scroll-lightbox-close {
        transition: none;
    }
    .scroll-loader-spark {
        animation: none;
        opacity: .8;
    }
}