/* =========================================================
   style.css — 业务组件层
   双人主页 / 纪念日 / 时间轴 / 照片墙 / 悄悄话 / 灯箱 / 设置
   ========================================================= */

.app {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 22px calc(var(--tabbar-h) + 40px);
    opacity: 0;
    transition: opacity .8s var(--ease);
}
.app.is-ready { opacity: 1; }

.section { padding: 92px 0; scroll-margin-top: 76px; }
.section:first-child { padding-top: 104px; }

.sec-head { text-align: center; margin-bottom: 48px; }
.sec-title {
    position: relative;
    display: inline-block;
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 4.6vw, 2.05rem);
    letter-spacing: .14em;
}
.sec-title::after {
    content: "";
    position: absolute;
    left: 50%; bottom: -11px;
    width: 42px; height: 2px;
    transform: translateX(-50%);
    border-radius: 2px;
    background: linear-gradient(90deg, transparent, var(--rose), transparent);
}
.sec-sub {
    margin-top: 22px;
    font-size: .87rem;
    color: var(--ink-3);
    letter-spacing: .08em;
}

/* =========================================================
   双人主页 Hero（原项目无此模块，全新构建）
   ========================================================= */
.hero { position: relative; text-align: center; }

.hero-glow {
    position: absolute;
    top: 6%; left: 50%;
    width: min(560px, 96vw);
    aspect-ratio: 1;
    transform: translateX(-50%);
    background: radial-gradient(circle, color-mix(in srgb, var(--rose) 30%, transparent), transparent 66%);
    filter: blur(38px);
    pointer-events: none;
    z-index: -1;
    animation: breathe 7s var(--ease) infinite;
}
@keyframes breathe {
    0%, 100% { transform: translateX(-50%) scale(1);    opacity: .82; }
    50%      { transform: translateX(-50%) scale(1.13); opacity: 1; }
}

/* 青蛙 + 小狗 装饰形象（桌面端漂浮于 Hero 两侧，移动端隐藏避免遮挡） */
.mascots {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}
.mascot {
    position: absolute;
    width: clamp(64px, 15vw, 104px);
    height: auto;
    opacity: .94;
    filter: drop-shadow(0 12px 20px rgba(90, 70, 55, .18));
}
.mascot-frog {
    left: max(4px, 1.5vw);
    bottom: 92px;
    animation: floatY 5.4s var(--ease) infinite;
}
.mascot-dog {
    right: max(4px, 1.5vw);
    bottom: 74px;
    animation: floatY 6.1s var(--ease) infinite .6s;
}
@keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-13px); }
}

.eyebrow {
    font-size: .72rem;
    letter-spacing: .42em;
    text-transform: uppercase;
    color: var(--rose-deep);
    opacity: .82;
}

/* 双人头像 */
.couple {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: clamp(12px, 5vw, 46px);
    margin: 36px 0 30px;
}

.who { margin: 0; flex: 0 0 auto; }

.who-ring {
    position: relative;
    width: clamp(92px, 26vw, 132px);
    aspect-ratio: 1;
    padding: 4px;
    border-radius: 50%;
    background: linear-gradient(140deg, var(--rose-soft), var(--gold), var(--rose));
    box-shadow: var(--shadow-md);
    transition: transform .5s var(--ease-out-back);
}
.who:hover .who-ring { transform: translateY(-6px) scale(1.04); }
.who-ring img {
    width: 100%; height: 100%;
    border-radius: 50%;
    object-fit: cover;
    background: var(--cream-2);
    border: 3px solid var(--surface-solid);
}

/* 左侧头像轻微内倾，右侧对称，形成"相望"感 */
#who-a .who-ring { transform: rotate(-3deg); }
#who-b .who-ring { transform: rotate(3deg); }
#who-a:hover .who-ring { transform: rotate(-3deg) translateY(-6px) scale(1.04); }
#who-b:hover .who-ring { transform: rotate(3deg) translateY(-6px) scale(1.04); }

.who figcaption { margin-top: 14px; display: flex; flex-direction: column; gap: 2px; }
.who-name {
    font-family: var(--font-serif);
    font-size: 1.06rem;
    letter-spacing: .12em;
}
.who-role { font-size: .68rem; letter-spacing: .2em; color: var(--ink-3); }

/* 中间的心结 */
.knot {
    position: relative;
    align-self: center;
    margin-top: clamp(28px, 8vw, 44px);
    display: grid;
    place-items: center;
    width: clamp(44px, 12vw, 62px);
}
.knot-heart {
    width: clamp(22px, 6vw, 30px);
    height: auto;
    fill: var(--rose);
    filter: drop-shadow(0 4px 12px color-mix(in srgb, var(--rose) 50%, transparent));
    animation: beat 2.4s var(--ease) infinite;
}
.knot-line {
    position: absolute;
    top: 50%;
    width: clamp(14px, 4vw, 22px);
    height: 1.5px;
    background: linear-gradient(90deg, transparent, var(--rose-soft));
}
.knot-line-l { right: 100%; }
.knot-line-r { left: 100%; background: linear-gradient(90deg, var(--rose-soft), transparent); }

.declaration {
    max-width: 30ch;
    margin: 0 auto;
    font-family: var(--font-serif);
    font-size: clamp(.95rem, 3.4vw, 1.1rem);
    line-height: 2;
    letter-spacing: .07em;
    color: var(--ink-2);
}

/* 恋爱计时器（继承原项目计时逻辑，视觉重做） */
.counter {
    margin: 52px auto 0;
    padding: 34px 26px 28px;
    max-width: 460px;
    border-radius: var(--r-xl);
    border: 1px solid var(--line);
    background: var(--surface);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: var(--shadow-md);
}
.counter-label { font-size: .8rem; letter-spacing: .16em; color: var(--ink-3); }

.counter-main {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 8px;
    margin: 6px 0 14px;
}
.counter-num {
    font-family: var(--font-serif);
    font-size: clamp(3.1rem, 14vw, 4.6rem);
    font-weight: 600;
    line-height: 1;
    letter-spacing: .02em;
    background: linear-gradient(135deg, var(--rose), var(--rose-deep) 60%, var(--gold));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-variant-numeric: tabular-nums;
}
.counter-unit { font-size: 1rem; color: var(--ink-2); letter-spacing: .1em; }

.counter-fine {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px 12px;
    padding-top: 15px;
    border-top: 1px dashed var(--line-strong);
    font-size: .76rem;
    color: var(--ink-2);
    letter-spacing: .04em;
}
.counter-fine b {
    font-weight: 600;
    color: var(--rose-deep);
    font-variant-numeric: tabular-nums;
}
.counter-since { margin-top: 12px; font-size: .7rem; letter-spacing: .1em; color: var(--ink-3); }

/* 双人资料卡 */
.cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin-top: 34px;
    text-align: left;
}
.card {
    position: relative;
    padding: 24px 22px;
    overflow: hidden;
    border-radius: var(--r-lg);
    border: 1px solid var(--line);
    background: var(--surface);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: transform .45s var(--ease), box-shadow .45s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--accent, var(--rose));
    opacity: .85;
}
.card-head { display: flex; align-items: center; gap: 11px; margin-bottom: 16px; }
.card-avatar {
    width: 38px; height: 38px;
    flex: none;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--surface-solid);
    box-shadow: var(--shadow-sm);
}
.card-name { font-family: var(--font-serif); font-size: 1rem; letter-spacing: .1em; }
.card-mbti {
    padding: 2px 9px;
    font-size: .64rem;
    letter-spacing: .12em;
    color: #fff;
    border-radius: 999px;
    background: var(--accent, var(--rose));
}
.card-rows { display: grid; gap: 7px; font-size: .8rem; }
.card-row { display: flex; gap: 10px; color: var(--ink-2); }
.card-row dt { flex: none; width: 3.4em; color: var(--ink-3); font-size: .74rem; letter-spacing: .06em; }
.card-row dd { margin: 0; }
.card-motto {
    margin-top: 15px;
    padding-top: 14px;
    border-top: 1px dashed var(--line-strong);
    font-family: var(--font-serif);
    font-size: .85rem;
    line-height: 1.9;
    color: var(--ink-2);
}
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 13px; }
.chip {
    padding: 3px 11px;
    font-size: .68rem;
    letter-spacing: .05em;
    color: var(--ink-2);
    border-radius: 999px;
    background: color-mix(in srgb, var(--rose) 12%, transparent);
}

.scroll-cue {
    display: inline-grid;
    place-items: center;
    width: 34px; height: 34px;
    margin-top: 46px;
    color: var(--ink-3);
    animation: bob 2.2s var(--ease) infinite;
}
.scroll-cue svg { width: 20px; height: 20px; }
@keyframes bob {
    0%, 100% { transform: translateY(0);   opacity: .5; }
    50%      { transform: translateY(7px); opacity: 1; }
}

/* =========================================================
   纪念日（原项目仅有单一计时器；此处扩展为多纪念日 + 倒数）
   ========================================================= */
.anniv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(232px, 1fr));
    gap: 16px;
}
.anniv {
    position: relative;
    padding: 22px 20px;
    overflow: hidden;
    border-radius: var(--r-lg);
    border: 1px solid var(--line);
    background: var(--surface);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: transform .45s var(--ease), box-shadow .45s, border-color .3s;
}
.anniv:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--line-strong); }

.anniv-icon {
    width: 34px; height: 34px;
    display: grid;
    place-items: center;
    margin-bottom: 14px;
    color: var(--rose-deep);
    border-radius: 12px;
    background: color-mix(in srgb, var(--rose) 16%, transparent);
}
.anniv-icon svg { width: 18px; height: 18px; }

.anniv-title { font-size: .95rem; font-weight: 500; letter-spacing: .06em; }
.anniv-date { margin-top: 4px; font-size: .72rem; letter-spacing: .08em; color: var(--ink-3); font-variant-numeric: tabular-nums; }

.anniv-count { display: flex; align-items: baseline; gap: 6px; margin-top: 16px; }
.anniv-num {
    font-family: var(--font-serif);
    font-size: 2.1rem;
    font-weight: 600;
    line-height: 1;
    color: var(--rose-deep);
    font-variant-numeric: tabular-nums;
}
.anniv-word { font-size: .74rem; letter-spacing: .1em; color: var(--ink-2); }
.anniv-note { margin-top: 12px; font-size: .76rem; color: var(--ink-3); letter-spacing: .04em; }

/* 今天就是纪念日 */
.anniv.is-today {
    border-color: var(--rose);
    background: linear-gradient(150deg, color-mix(in srgb, var(--rose) 20%, var(--surface-solid)), var(--surface-solid));
}
.anniv.is-today .anniv-num { font-size: 1.5rem; }
.anniv-badge {
    position: absolute;
    top: 16px; right: 16px;
    padding: 3px 10px;
    font-size: .62rem;
    letter-spacing: .14em;
    color: #fff;
    border-radius: 999px;
    background: var(--rose-deep);
    animation: beat 1.8s var(--ease) infinite;
}
.anniv.is-past { opacity: .58; }

/* =========================================================
   时间轴（复用原项目渲染思路，改为居中双列 + 移动端单列）
   ========================================================= */
.timeline { position: relative; padding: 8px 0; }
.timeline::before {
    content: "";
    position: absolute;
    top: 0; bottom: 0; left: 50%;
    width: 2px;
    transform: translateX(-50%);
    background: linear-gradient(180deg, transparent, var(--line-strong) 8%, var(--line-strong) 92%, transparent);
}

.tl-item {
    position: relative;
    width: 50%;
    padding: 0 42px 46px 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.tl-item.is-in { opacity: 1; transform: none; }
.tl-item:nth-child(even) { margin-left: 50%; padding: 0 0 46px 42px; }

/* 轴上的节点 */
.tl-dot {
    position: absolute;
    top: 22px;
    right: -6px;
    width: 12px; height: 12px;
    border-radius: 50%;
    background: var(--rose);
    border: 2.5px solid var(--cream);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--rose) 20%, transparent);
    z-index: 2;
}
.tl-item:nth-child(even) .tl-dot { right: auto; left: -6px; }

.tl-card {
    overflow: hidden;
    border-radius: var(--r-lg);
    border: 1px solid var(--line);
    background: var(--surface);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: transform .45s var(--ease), box-shadow .45s;
}
.tl-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.tl-photo {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--cream-2);
    cursor: zoom-in;
}
.tl-photo img {
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0;
    transform: scale(1.06);
    transition: opacity .7s var(--ease), transform .8s var(--ease);
}
.tl-photo img.is-loaded { opacity: 1; transform: none; }
.tl-card:hover .tl-photo img.is-loaded { transform: scale(1.05); }

.tl-body { padding: 20px 20px 22px; }
.tl-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 9px; }
.tl-date {
    font-size: .72rem;
    letter-spacing: .12em;
    color: var(--rose-deep);
    font-variant-numeric: tabular-nums;
}
.tl-mood {
    padding: 2px 9px;
    font-size: .64rem;
    letter-spacing: .1em;
    color: var(--ink-2);
    border-radius: 999px;
    border: 1px solid var(--line-strong);
}
.tl-title {
    font-family: var(--font-serif);
    font-size: 1.08rem;
    letter-spacing: .07em;
    margin-bottom: 8px;
}
.tl-desc { font-size: .84rem; line-height: 1.95; color: var(--ink-2); }
.tl-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 13px; }

.tl-top-flag {
    position: absolute;
    top: 12px; left: 12px;
    z-index: 2;
    padding: 3px 10px;
    font-size: .62rem;
    letter-spacing: .12em;
    color: #fff;
    border-radius: 999px;
    background: color-mix(in srgb, var(--rose-deep) 88%, transparent);
    backdrop-filter: blur(6px);
}

/* =========================================================
   照片墙（原项目无此模块，全新构建：CSS 多列瀑布流）
   ========================================================= */
.wall { columns: 3; column-gap: 16px; }

.wall-item {
    position: relative;
    margin-bottom: 16px;
    break-inside: avoid;
    overflow: hidden;
    border-radius: var(--r-md);
    background: var(--cream-2);
    box-shadow: var(--shadow-sm);
    cursor: zoom-in;
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .7s var(--ease), transform .7s var(--ease), box-shadow .4s;
}
.wall-item.is-in { opacity: 1; transform: none; }
.wall-item:hover { box-shadow: var(--shadow-lg); }

.wall-item img {
    width: 100%;
    display: block;
    object-fit: cover;
    transition: transform .7s var(--ease), filter .5s;
}
.wall-item:hover img { transform: scale(1.06); }

.wall-cap {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    padding: 30px 15px 14px;
    color: #fff;
    background: linear-gradient(to top, rgba(40, 25, 30, .82), transparent);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity .4s var(--ease), transform .4s var(--ease);
}
.wall-item:hover .wall-cap { opacity: 1; transform: none; }
.wall-cap b { display: block; font-size: .84rem; font-weight: 500; letter-spacing: .05em; }
.wall-cap small { font-size: .68rem; opacity: .78; letter-spacing: .08em; }

/* 视频角标（本次新增：照片墙支持视频） */
.wall-item.is-video { cursor: zoom-in; }
.wall-play {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 52px; height: 52px;
    display: grid;
    place-items: center;
    color: #fff;
    border-radius: 50%;
    background: rgba(40, 25, 30, .5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, .3);
    pointer-events: none;
    transition: transform .3s var(--ease), background .3s;
}
.wall-play svg { width: 22px; height: 22px; margin-left: 3px; }
.wall-item:hover .wall-play { transform: translate(-50%, -50%) scale(1.12); background: rgba(201, 104, 124, .72); }

.wall-dur {
    position: absolute;
    right: 8px; bottom: 8px;
    padding: 2px 8px;
    font-size: .68rem;
    color: #fff;
    border-radius: 999px;
    background: rgba(40, 25, 30, .62);
    font-variant-numeric: tabular-nums;
    pointer-events: none;
}

.wall-mine {
    position: absolute;
    top: 8px; left: 8px;
    padding: 3px 10px;
    font-size: .64rem;
    letter-spacing: .08em;
    color: #fff;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--rose), var(--rose-deep));
    box-shadow: 0 3px 10px color-mix(in srgb, var(--rose) 40%, transparent);
    pointer-events: none;
}

/* 视频取不到封面时的占位 */
.wall-noposter {
    display: grid;
    place-items: center;
    aspect-ratio: 4 / 3;
    color: var(--ink-3);
    background: linear-gradient(135deg, var(--cream-2), var(--blush));
}
.wall-noposter svg { width: 42px; height: 42px; opacity: .55; }

/* =========================================================
   上传区（本次新增：点击 / 拖拽 → IndexedDB）
   ========================================================= */
.uploader {
    margin-bottom: 34px;
    padding: 22px;
    border-radius: var(--r-lg);
    border: 1px dashed var(--line-strong);
    background: color-mix(in srgb, var(--surface) 55%, transparent);
    transition: border-color .3s, background .3s;
}
.uploader-drop {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 18px;
    border-radius: var(--r-md);
    border: 1.5px solid transparent;
    background: var(--surface-solid);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: transform .3s var(--ease), box-shadow .3s, border-color .3s, background .3s;
}
.uploader-drop:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.uploader-drop.is-over {
    border-color: var(--rose);
    background: color-mix(in srgb, var(--rose) 10%, var(--surface-solid));
}
.uploader-drop.is-busy { pointer-events: none; opacity: .72; }

.uploader-icon {
    flex: none;
    width: 46px; height: 46px;
    padding: 12px;
    color: #fff;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--rose), var(--rose-deep));
    box-shadow: 0 6px 16px color-mix(in srgb, var(--rose) 40%, transparent);
}
.uploader-icon svg { width: 100%; height: 100%; }

.uploader-text { flex: 1; min-width: 0; }
.uploader-text b { display: block; font-size: .95rem; font-weight: 500; letter-spacing: .04em; }
.uploader-text small { font-size: .73rem; color: var(--ink-3); letter-spacing: .04em; }
.uploader-btn { flex: none; margin-left: 6px; }

.uploader-bar {
    position: relative;
    margin: 16px 2px 0;
    height: 8px;
    padding-bottom: 22px;
    border-radius: 999px;
    background: var(--line-strong);
}
.uploader-bar-fill {
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: 0;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--rose), var(--rose-deep));
    transition: width .3s var(--ease);
}
.uploader-bar-text {
    position: absolute;
    top: 14px; left: 1px;
    font-size: .72rem;
    color: var(--ink-3);
    letter-spacing: .04em;
}

.uploader-meta {
    margin-top: 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    font-size: .74rem;
    color: var(--ink-3);
    letter-spacing: .04em;
}
.uploader-off {
    padding: 18px;
    text-align: center;
    font-size: .82rem;
    color: var(--ink-3);
    border-radius: var(--r-md);
    background: var(--surface-solid);
}

.link-btn {
    color: var(--rose-deep);
    font-size: .74rem;
    letter-spacing: .04em;
    text-decoration: underline;
    text-underline-offset: 3px;
    opacity: .9;
    transition: opacity .2s;
}
.link-btn:hover { opacity: 1; }

/* =========================================================
   悄悄话 / 留言板（原项目无此模块，全新构建 + localStorage 持久化）
   ========================================================= */
.composer {
    padding: 20px;
    margin-bottom: 30px;
    border-radius: var(--r-lg);
    border: 1px solid var(--line);
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
}
.composer-top { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.composer-tip { font-size: .72rem; letter-spacing: .1em; color: var(--ink-3); }

.who-switch { display: flex; gap: 6px; padding: 3px; border-radius: 999px; background: color-mix(in srgb, var(--rose) 10%, transparent); }
.who-opt {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 5px 14px 5px 6px;
    font-size: .8rem;
    color: var(--ink-2);
    border-radius: 999px;
    transition: background .3s var(--ease), color .3s, box-shadow .3s;
}
.who-opt img { width: 22px; height: 22px; border-radius: 50%; object-fit: cover; }
.who-opt.is-active { color: var(--ink); background: var(--surface-solid); box-shadow: var(--shadow-sm); }

.composer-input {
    width: 100%;
    padding: 14px 16px;
    font-size: .88rem;
    line-height: 1.85;
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    background: color-mix(in srgb, var(--surface-solid) 70%, transparent);
    resize: vertical;
    outline: none;
    transition: border-color .3s, box-shadow .3s;
}
.composer-input::placeholder { color: var(--ink-3); }
.composer-input:focus {
    border-color: var(--rose-soft);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--rose) 15%, transparent);
}

.composer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 13px;
}
.moods { display: flex; flex-wrap: wrap; gap: 6px; }
.mood-btn {
    padding: 4px 12px;
    font-size: .74rem;
    letter-spacing: .05em;
    color: var(--ink-2);
    border-radius: 999px;
    border: 1px solid var(--line);
    transition: all .25s var(--ease);
}
.mood-btn:hover { border-color: var(--line-strong); }
.mood-btn.is-active {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(135deg, var(--rose), var(--rose-deep));
}
.composer-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.counter-chars { font-size: .7rem; color: var(--ink-3); font-variant-numeric: tabular-nums; }

/* 留言气泡 */
.msg-list { display: flex; flex-direction: column; gap: 16px; }

.msg {
    display: flex;
    gap: 12px;
    max-width: 80%;
    opacity: 0;
    transform: translateY(16px);
    animation: msgIn .55s var(--ease) forwards;
}
@keyframes msgIn { to { opacity: 1; transform: none; } }
.msg.is-right { flex-direction: row-reverse; margin-left: auto; }

.msg-avatar {
    width: 38px; height: 38px;
    flex: none;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--surface-solid);
    box-shadow: var(--shadow-sm);
}
.msg-main { min-width: 0; }
.msg-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; font-size: .72rem; color: var(--ink-3); }
.msg.is-right .msg-head { flex-direction: row-reverse; }
.msg-author { color: var(--ink-2); letter-spacing: .08em; }
.msg-mood { color: var(--rose-deep); }

.msg-bubble {
    position: relative;
    padding: 13px 17px;
    font-size: .87rem;
    line-height: 1.9;
    border-radius: 4px 18px 18px 18px;
    border: 1px solid var(--line);
    background: var(--surface-solid);
    box-shadow: var(--shadow-sm);
    word-break: break-word;
    white-space: pre-wrap;
}
.msg.is-right .msg-bubble {
    border-radius: 18px 4px 18px 18px;
    color: #fff;
    border-color: transparent;
    background: linear-gradient(135deg, var(--rose), var(--rose-deep));
}

.msg-foot { display: flex; align-items: center; gap: 12px; margin-top: 7px; font-size: .7rem; color: var(--ink-3); }
.msg.is-right .msg-foot { flex-direction: row-reverse; }

.like-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--ink-3);
    transition: color .25s, transform .25s var(--ease-out-back);
}
.like-btn svg { width: 13px; height: 12px; fill: none; stroke: currentColor; stroke-width: 2; }
.like-btn:hover { color: var(--rose); }
.like-btn.is-liked { color: var(--rose-deep); }
.like-btn.is-liked svg { fill: currentColor; stroke: none; }
.like-btn.is-pop { transform: scale(1.32); }

.del-btn { color: var(--ink-3); opacity: 0; transition: opacity .25s, color .2s; }
.msg:hover .del-btn { opacity: 1; }
.del-btn:hover { color: var(--rose-deep); }

.msg-empty {
    padding: 48px 20px;
    text-align: center;
    font-size: .84rem;
    color: var(--ink-3);
    letter-spacing: .06em;
    border: 1px dashed var(--line-strong);
    border-radius: var(--r-lg);
}

/* =========================================================
   页脚
   ========================================================= */
.footer { padding: 60px 0 30px; text-align: center; border-top: 1px solid var(--line); }
.footer-heart { display: block; width: 20px; height: 18px; margin: 0 auto 16px; fill: var(--rose-soft); animation: beat 2.6s var(--ease) infinite; }
.footer-note { font-family: var(--font-serif); font-size: .9rem; letter-spacing: .1em; color: var(--ink-2); }
.footer-credit { margin-top: 12px; font-size: .68rem; letter-spacing: .05em; color: var(--ink-3); }
.footer-credit a { color: var(--rose-deep); border-bottom: 1px solid var(--line-strong); }

/* =========================================================
   灯箱
   ========================================================= */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 250;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: color-mix(in srgb, var(--ink) 90%, transparent);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .4s var(--ease), visibility .4s;
}
.lightbox.is-open { opacity: 1; visibility: visible; }

.lb-stage { margin: 0; max-width: min(860px, 100%); text-align: center; }
.lb-stage img {
    max-width: 100%;
    max-height: 74vh;
    margin: 0 auto;
    border-radius: var(--r-md);
    box-shadow: 0 30px 80px rgba(0, 0, 0, .5);
    transform: scale(.94);
    opacity: 0;
    transition: transform .5s var(--ease-out-back), opacity .4s;
}
.lightbox.is-open .lb-stage img { transform: none; opacity: 1; }
.lb-stage figcaption { margin-top: 18px; color: #fff; }
.lb-stage figcaption span { display: block; font-size: .92rem; letter-spacing: .08em; }
.lb-stage figcaption small { font-size: .72rem; opacity: .6; letter-spacing: .1em; }

.lb-close, .lb-nav {
    position: absolute;
    display: grid;
    place-items: center;
    width: 44px; height: 44px;
    color: #fff;
    border-radius: 50%;
    background: rgba(255, 255, 255, .1);
    border: 1px solid rgba(255, 255, 255, .18);
    transition: background .25s, transform .3s var(--ease);
}
.lb-close svg, .lb-nav svg { width: 20px; height: 20px; }
.lb-close:hover, .lb-nav:hover { background: rgba(255, 255, 255, .22); }
.lb-close { top: max(22px, env(safe-area-inset-top)); right: 22px; }
.lb-prev { left: 22px; }
.lb-next { right: 22px; }

/* 灯箱视频（本次新增） */
.lb-stage video {
    max-width: 100%;
    max-height: 74vh;
    margin: 0 auto;
    border-radius: var(--r-md);
    background: #000;
    box-shadow: 0 30px 80px rgba(0, 0, 0, .5);
}
.lb-del {
    display: inline-block;
    margin-top: 14px;
    padding: 6px 18px;
    font-size: .76rem;
    letter-spacing: .06em;
    color: #fff;
    border-radius: 999px;
    background: rgba(255, 255, 255, .14);
    border: 1px solid rgba(255, 255, 255, .22);
    transition: background .25s, transform .3s var(--ease);
}
.lb-del:hover { background: rgba(201, 104, 124, .82); transform: translateY(-1px); }

/* =========================================================
   设置面板（桌面居中弹窗 / 移动端底部抽屉）
   ========================================================= */
.sheet {
    position: fixed;
    inset: 0;
    z-index: 220;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 22px;
    background: rgba(40, 25, 30, .42);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .35s var(--ease), visibility .35s;
}
.sheet.is-open { opacity: 1; visibility: visible; }

.sheet-panel {
    width: 100%;
    max-width: 420px;
    max-height: 86vh;
    overflow-y: auto;
    padding: 24px;
    border-radius: var(--r-xl);
    background: var(--surface-solid);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    transform: translateY(20px) scale(.97);
    transition: transform .42s var(--ease-out-back);
}
.sheet.is-open .sheet-panel { transform: none; }

.sheet-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.sheet-head h3 { font-family: var(--font-serif); font-size: 1.14rem; letter-spacing: .14em; }

.setting {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
}
.setting-col { flex-direction: column; align-items: stretch; gap: 10px; }
.setting-text { display: flex; flex-direction: column; gap: 2px; }
.setting-text b { font-size: .88rem; font-weight: 500; }
.setting-text small { font-size: .72rem; color: var(--ink-3); }
.setting .switch { margin-left: auto; }

.num-input {
    width: 100%;
    padding: 10px 14px;
    font-size: .86rem;
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    background: color-mix(in srgb, var(--cream-2) 60%, transparent);
    outline: none;
    transition: border-color .25s;
}
.num-input:focus { border-color: var(--rose-soft); }

.sheet-foot { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.sheet-foot .btn-ghost { flex: 1; min-width: 116px; }

/* =========================================================
   编辑内容后台（复用 .sheet 弹窗框架）
   ========================================================= */
.editor-panel { max-width: 580px; }
.editor-head-actions { display: flex; align-items: center; gap: 10px; }
.editor-head-actions .link-btn { font-size: .76rem; }
.btn-edit { color: var(--rose); border-color: var(--rose-soft); }

.editor-tabs {
    display: flex; flex-wrap: wrap; gap: 4px;
    margin: 14px 0 6px; padding-bottom: 8px;
    border-bottom: 1px solid var(--line);
}
.editor-tab {
    flex: 1; min-width: 60px; padding: 9px 6px;
    font-size: .8rem; font-family: inherit;
    border: none; background: none; color: var(--ink-3);
    cursor: pointer; border-bottom: 2px solid transparent;
    transition: color .2s, border-color .2s;
}
.editor-tab.is-active { color: var(--rose); border-bottom-color: var(--rose); font-weight: 600; }

.editor-body { padding: 8px 0 2px; }

.ed-sec { display: flex; flex-direction: column; gap: 12px; }
.ed-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.ed-row { display: flex; flex-direction: column; gap: 5px; }
.ed-label { font-size: .74rem; color: var(--ink-3); letter-spacing: .04em; }
.ed-input {
    width: 100%; padding: 9px 12px; font-size: .86rem; font-family: inherit;
    border: 1px solid var(--line); border-radius: var(--r-sm);
    background: color-mix(in srgb, var(--cream-2) 55%, transparent);
    color: var(--ink); outline: none; transition: border-color .25s;
}
.ed-input:focus { border-color: var(--rose-soft); }
textarea.ed-input { resize: vertical; line-height: 1.6; }

.ed-card, .ed-item {
    border: 1px solid var(--line); border-radius: var(--r-lg);
    padding: 14px; display: flex; flex-direction: column; gap: 10px;
    background: color-mix(in srgb, var(--cream) 32%, transparent);
}
.ed-card-head { display: flex; align-items: center; gap: 12px; }
.ed-av { width: 54px; height: 54px; border-radius: 50%; object-fit: cover; border: 2px solid var(--line); }

.ed-item-bar { display: flex; align-items: center; justify-content: space-between; }
.ed-item-idx { font-size: .74rem; color: var(--ink-3); }
.ed-del {
    width: 26px; height: 26px; border-radius: 50%;
    border: 1px solid var(--line); background: transparent;
    color: var(--rose); cursor: pointer; font-size: .76rem; line-height: 1;
    transition: background .2s, color .2s;
}
.ed-del:hover { background: var(--rose); color: #fff; }

.btn-add {
    padding: 11px; border: 1px dashed var(--rose-soft);
    border-radius: var(--r-md); background: transparent;
    color: var(--rose); cursor: pointer; font-size: .84rem; font-family: inherit;
    transition: background .2s;
}
.btn-add:hover { background: color-mix(in srgb, var(--rose) 8%, transparent); }

.btn-mini {
    align-self: flex-start; padding: 6px 12px; font-size: .74rem; font-family: inherit;
    border: 1px solid var(--line); border-radius: 999px;
    background: var(--surface-solid); color: var(--ink-2); cursor: pointer;
    transition: border-color .2s, color .2s;
}
.btn-mini:hover { border-color: var(--rose-soft); color: var(--rose); }

.ed-sub { font-size: .76rem; color: var(--ink-3); margin-top: 4px; }
.ed-empty { font-size: .8rem; color: var(--ink-3); text-align: center; padding: 8px; }
.ed-tip {
    font-size: .72rem; color: var(--ink-3); line-height: 1.6;
    background: color-mix(in srgb, var(--cream-2) 50%, transparent);
    padding: 9px 11px; border-radius: var(--r-sm);
}
.ed-photo-wrap { display: flex; flex-direction: column; gap: 6px; }
.ed-photo { width: 100%; max-height: 150px; object-fit: cover; border-radius: var(--r-sm); border: 1px solid var(--line); }
.ed-photo-ph { font-size: .74rem; color: var(--ink-3); padding: 12px; text-align: center; border: 1px dashed var(--line); border-radius: var(--r-sm); }

@media (max-width: 480px) { .ed-2col { grid-template-columns: 1fr; } }

/* =========================================================
   响应式：移动端适配
   ========================================================= */
@media (max-width: 900px) {
    .wall { columns: 2; }
    .cards { gap: 14px; }
}

@media (max-width: 720px) {
    /* 顶部导航收起，改用底部 Tab */
    .nav { display: none; }
    .tabbar { display: flex; }
    .topbar { padding: 10px 18px; }

    .app { padding: 0 18px calc(var(--tabbar-h) + 46px); }
    .section { padding: 62px 0; scroll-margin-top: 64px; }
    .section:first-child { padding-top: 86px; }
    .sec-head { margin-bottom: 34px; }

    /* Hero */
    .mascots { display: none; }
    .couple { gap: 8px; }
    .declaration { max-width: 24ch; }
    .counter { margin-top: 38px; padding: 26px 18px 22px; }
    .counter-fine { gap: 3px 9px; font-size: .7rem; }

    /* 资料卡改为单列 */
    .cards { grid-template-columns: 1fr; }

    /* 时间轴：轴线移到左侧，卡片单列 */
    .timeline::before { left: 7px; transform: none; }
    .tl-item,
    .tl-item:nth-child(even) {
        width: 100%;
        margin-left: 0;
        padding: 0 0 30px 30px;
    }
    .tl-dot,
    .tl-item:nth-child(even) .tl-dot { left: 1px; right: auto; top: 18px; }

    .tl-body { padding: 17px 17px 19px; }
    .tl-title { font-size: 1rem; }

    /* 照片墙单列以保证观感 */
    .wall { columns: 2; column-gap: 12px; }
    .wall-item { margin-bottom: 12px; border-radius: var(--r-sm); }
    /* 移动端无 hover，说明常显 */
    .wall-cap { opacity: 1; transform: none; padding: 22px 11px 10px; }
    .wall-cap b { font-size: .74rem; }
    .wall-cap small { display: none; }

    /* 留言 */
    .msg { max-width: 90%; }
    .del-btn { opacity: 1; }

    /* 灯箱 */
    .lb-nav { bottom: max(26px, env(safe-area-inset-bottom)); top: auto; }
    .lb-prev { left: 26%; }
    .lb-next { right: 26%; }
    .lb-stage img,
    .lb-stage video { max-height: 62vh; }

    /* 设置面板变底部抽屉 */
    .sheet { align-items: flex-end; padding: 0; }
    .sheet-panel {
        max-width: none;
        max-height: 88vh;
        border-radius: var(--r-xl) var(--r-xl) 0 0;
        padding: 22px 20px calc(24px + env(safe-area-inset-bottom));
        transform: translateY(100%);
    }
    .toast { bottom: calc(var(--tabbar-h) + 22px); }
}

@media (max-width: 430px) {
    .brand-text { font-size: .94rem; }
    .keypad { gap: 12px; }
    .key { height: 62px; }
    .who-ring { width: clamp(80px, 24vw, 104px); }
    .knot { width: 38px; }
    .counter-num { font-size: 3.2rem; }
    .anniv-grid { grid-template-columns: 1fr; }
    .sheet-foot .btn-ghost { min-width: 0; }
}

/* 桌面端不显示底部 Tab，回收其占位高度 */
@media (min-width: 721px) {
    :root { --tabbar-h: 0px; }
    .app { padding-bottom: 40px; }
}

/* 大屏优化 */
@media (min-width: 1100px) {
    .wall { columns: 3; }
}

/* color-mix 不受支持时的降级（旧内核浏览器） */
@supports not (background: color-mix(in srgb, red 50%, blue)) {
    .topbar { background: rgba(255, 247, 243, .92); }
    body[data-theme="dark"] .topbar { background: rgba(28, 23, 25, .92); }
    .tabbar { background: rgba(255, 247, 243, .96); }
    body[data-theme="dark"] .tabbar { background: rgba(28, 23, 25, .96); }
    .nav-link.is-active { background: rgba(232, 137, 154, .16); }
    .chip, .who-switch { background: rgba(232, 137, 154, .12); }
    .anniv-icon { background: rgba(232, 137, 154, .16); }
    .lightbox { background: rgba(40, 25, 30, .94); }
    .toast { background: #4A3B3F; }
    .anniv.is-today { background: var(--surface-solid); }
}