/* ============================================================
   爱信箱 - 浪漫样式（电脑 + 手机自适应）
   ============================================================ */
.lm-wrap{max-width:880px;margin:0 auto}
.lm-wrap-narrow{max-width:760px}

/* ---------- 上半屏：背景轮播窗口（占窗口一半高度） ---------- */
.lm-hero{position:relative;height:50vh;min-height:320px;max-height:560px;border-radius:0 0 28px 28px;overflow:hidden;box-shadow:0 10px 40px rgba(233,30,99,.18)}
.lm-bg-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1.4s ease}
.lm-bg-slide.active{opacity:1}
.lm-bg-default{background:linear-gradient(135deg,#ff8fab 0%,#ff5e8a 45%,#e91e63 100%)}
.lm-bg-hearts{position:absolute;inset:0;display:flex;align-items:center;justify-content:space-around;font-size:120px;color:rgba(255,255,255,.16);letter-spacing:30px;white-space:nowrap;overflow:hidden}
.lm-hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(233,30,99,.12) 0%,rgba(233,30,99,.25) 100%)}

/* 浮动爱心 */
.lm-floating-hearts{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.lm-floating-hearts i{position:absolute;bottom:-40px;color:rgba(255,255,255,.75);font-style:normal;animation:lmFloat linear infinite;user-select:none}
@keyframes lmFloat{0%{transform:translateY(0) rotate(0deg);opacity:0}15%{opacity:.85}100%{transform:translateY(-115vh) rotate(30deg);opacity:0}}

.lm-hero-content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#fff;padding:20px}
.lm-hero-icon{width:66px;height:66px;line-height:66px;border-radius:50%;background:rgba(255,255,255,.22);backdrop-filter:blur(4px);font-size:32px;margin-bottom:12px;box-shadow:0 0 30px rgba(255,255,255,.35);animation:lmBeat 1.6s ease-in-out infinite}
@keyframes lmBeat{0%,100%{transform:scale(1)}25%{transform:scale(1.12)}45%{transform:scale(.98)}}
.lm-hero-title{font-size:44px;letter-spacing:14px;margin:0 0 10px;text-shadow:0 3px 18px rgba(194,24,91,.55);font-weight:700}
.lm-hero-sub{font-size:15px;opacity:.95;margin:0;text-shadow:0 2px 8px rgba(0,0,0,.25);letter-spacing:1px}
.lm-hero-badge{margin-top:14px;padding:6px 18px;border-radius:20px;background:rgba(255,255,255,.22);backdrop-filter:blur(4px);font-size:13px}

/* 爱心形状上传背景按钮 */
.lm-heart-upload{position:absolute;z-index:3;left:50%;bottom:18px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:4px;cursor:pointer;transition:transform .25s}
.lm-heart-upload:hover{transform:translateX(-50%) scale(1.08)}
/* 设置页静态爱心上传按钮（不绝对定位） */
.lm-heart-upload-static{position:static;transform:none;margin:0 auto}
.lm-heart-upload-static:hover{transform:scale(1.08)}
.lm-heart-icon{display:flex;align-items:center;justify-content:center;width:84px;height:84px;font-size:38px;color:#fff;
    background:linear-gradient(135deg,#ff6b9d,#e91e63);clip-path:polygon(50% 0%,61% 9%,75% 9%,87% 19%,93% 34%,93% 48%,83% 63%,50% 100%,17% 63%,7% 48%,7% 34%,13% 19%,25% 9%,39% 9%);
    filter:drop-shadow(0 6px 14px rgba(194,24,91,.5));animation:lmBeat 1.8s ease-in-out infinite}
.lm-heart-label{color:#fff;font-size:12px;background:rgba(194,24,91,.55);padding:3px 12px;border-radius:12px;backdrop-filter:blur(3px)}
.lm-file-input{display:none}
.lm-photo-count{position:absolute;z-index:3;right:14px;bottom:14px;color:#fff;font-size:12px;background:rgba(0,0,0,.3);padding:4px 12px;border-radius:14px;backdrop-filter:blur(3px)}

.lm-login-tip{position:absolute;z-index:3;left:50%;bottom:20px;transform:translateX(-50%);display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.2);backdrop-filter:blur(6px);padding:10px 18px;border-radius:30px;color:#fff;font-size:14px;white-space:nowrap}
.lm-login-tip .lm-btn{margin:0}

/* ---------- 下半屏：功能窗口 ---------- */
.lm-panel{background:linear-gradient(180deg,#fff 0%,#fff5f8 100%);border-radius:0 0 24px 24px;padding:22px 20px 34px}
.lm-actions{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-bottom:18px}
.lm-action{display:flex;flex-direction:column;align-items:center;gap:8px;padding:14px 6px;background:#fff;border:1px solid #ffd6e2;border-radius:16px;cursor:pointer;text-decoration:none;color:#c2185b;font-size:13px;transition:all .25s;box-shadow:0 2px 10px rgba(233,30,99,.06)}
.lm-action:hover{transform:translateY(-3px);box-shadow:0 8px 22px rgba(233,30,99,.16);border-color:#ff5e8a}
.lm-action-icon{width:42px;height:42px;line-height:42px;border-radius:50%;background:linear-gradient(135deg,#fff0f5,#ffd6e2);font-size:20px}

.lm-search{background:#fff;border:1px solid #ffd6e2;border-radius:16px;padding:14px;margin-bottom:16px;box-shadow:0 4px 16px rgba(233,30,99,.08)}
.lm-search form{display:flex;gap:8px;flex-wrap:wrap}
.lm-search-tip{font-size:12px;color:#d81b60;margin-top:8px;opacity:.75}
.lm-input{flex:1;min-width:120px;padding:10px 14px;border:1px solid #ffc9da;border-radius:12px;font-size:14px;outline:none;background:#fffafc;color:#4a1d2e;transition:border .2s,box-shadow .2s}
.lm-input:focus{border-color:#ff5e8a;box-shadow:0 0 0 3px rgba(255,94,138,.15)}
.lm-input-date{min-width:150px;max-width:180px}

.lm-tabs{display:flex;gap:10px;margin-bottom:16px}
.lm-tab{padding:9px 20px;border-radius:24px;border:1px solid #ffc9da;background:#fff;color:#c2185b;font-size:14px;cursor:pointer;transition:all .2s}
.lm-tab.active{background:linear-gradient(135deg,#ff5e8a,#e91e63);color:#fff;border-color:transparent;box-shadow:0 4px 14px rgba(233,30,99,.3)}
.lm-tab:hover:not(.active){border-color:#ff5e8a}

.lm-list-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:12px}
.lm-list-head span:first-child{font-size:17px;font-weight:700;color:#8e1042}
.lm-list-count{font-size:12px;color:#d81b60;opacity:.7}
.lm-list{display:flex;flex-direction:column;gap:12px}
.lm-card{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid #ffe1ea;border-left:4px solid #ff5e8a;border-radius:16px;padding:14px 16px;text-decoration:none;color:inherit;transition:all .25s;box-shadow:0 2px 10px rgba(233,30,99,.05)}
.lm-card:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(233,30,99,.14)}
.lm-card-body{flex:1;min-width:0}
.lm-card-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.lm-card-title{font-size:16px;font-weight:700;color:#8e1042;word-break:break-all}
.lm-card-media{font-size:12px;color:#e91e63;background:#fff0f5;padding:2px 8px;border-radius:10px}
.lm-card-date{font-size:12px;color:#d81b60;margin-top:4px;opacity:.75}
.lm-card-preview{font-size:13px;color:#7a5a66;margin-top:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lm-del-btn{flex-shrink:0;width:34px;height:34px;border:none;border-radius:50%;background:#fff0f5;color:#e91e63;font-size:15px;cursor:pointer;transition:all .2s}
.lm-del-btn:hover{background:#e91e63;color:#fff}

.lm-empty{text-align:center;padding:44px 10px;color:#c2185b}
.lm-empty-icon{font-size:52px;margin-bottom:10px;animation:lmBeat 2s ease-in-out infinite}
.lm-empty p{font-size:14px;opacity:.85;margin:0 0 6px}
.lm-loadmore{text-align:center;margin-top:18px}

/* ---------- 按钮 ---------- */
.lm-btn{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;border-radius:24px;border:none;font-size:14px;cursor:pointer;text-decoration:none;transition:all .25s}
.lm-btn-primary{background:linear-gradient(135deg,#ff5e8a,#e91e63);color:#fff;box-shadow:0 4px 14px rgba(233,30,99,.32)}
.lm-btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(233,30,99,.42)}
.lm-btn-ghost{background:#fff;color:#c2185b;border:1px solid #ffc9da}
.lm-btn-ghost:hover{border-color:#ff5e8a;background:#fff5f8}
.lm-btn-light{background:rgba(255,255,255,.25);color:#fff;border:1px solid rgba(255,255,255,.6);padding:7px 16px}
.lm-btn-light:hover{background:rgba(255,255,255,.4)}
.lm-btn-soft{background:#fff0f5;color:#c2185b;border:1px solid #ffd6e2}
.lm-btn-soft:hover{background:#ffd6e2}
.lm-btn-danger{background:#fff;color:#e91e63;border:1px solid #ffb3c6}
.lm-btn-danger:hover{background:#e91e63;color:#fff;border-color:#e91e63}
.lm-btn-sm{padding:6px 13px;font-size:13px}
.lm-btn-lg{padding:12px 34px;font-size:16px}

/* ---------- 弹窗 ---------- */
.lm-modal{display:none;position:fixed;inset:0;z-index:2000;background:rgba(138,16,66,.45);backdrop-filter:blur(3px);align-items:center;justify-content:center;padding:16px}
.lm-modal.active{display:flex}
.lm-modal-box{position:relative;width:100%;max-width:460px;max-height:82vh;overflow-y:auto;background:linear-gradient(180deg,#fff,#fff5f8);border-radius:22px;padding:26px 22px;box-shadow:0 20px 60px rgba(138,16,66,.35);animation:lmPop .3s ease}
@keyframes lmPop{from{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}
.lm-modal-close{position:absolute;top:12px;right:14px;width:34px;height:34px;border:none;border-radius:50%;background:#fff0f5;color:#c2185b;font-size:20px;cursor:pointer;line-height:1}
.lm-modal-close:hover{background:#e91e63;color:#fff}
.lm-modal-title{text-align:center;color:#8e1042;margin:0 0 18px;font-size:20px}
.lm-loading{text-align:center;color:#c2185b;padding:26px 0;font-size:14px}

/* 伴侣弹窗 */
.lm-partner-status{text-align:center;padding:8px 0 14px}
.lm-partner-avatar{width:70px;height:70px;line-height:70px;margin:0 auto 10px;border-radius:50%;background:linear-gradient(135deg,#ff5e8a,#e91e63);color:#fff;font-size:30px;box-shadow:0 6px 18px rgba(233,30,99,.35)}
.lm-partner-name{font-size:17px;font-weight:700;color:#8e1042}
.lm-partner-meta{font-size:12px;color:#d81b60;margin-top:6px;opacity:.8}
.lm-partner-actions{display:flex;gap:10px;justify-content:center;margin-top:16px;flex-wrap:wrap}
.lm-join-form{display:flex;flex-direction:column;gap:12px;margin-top:8px}
.lm-join-tip{font-size:13px;color:#c2185b;background:#fff0f5;border:1px dashed #ffb3c6;border-radius:12px;padding:10px 12px;line-height:1.7}

/* 恋爱史 */
.lm-history-sec{font-size:15px;font-weight:700;color:#8e1042;margin:16px 0 8px;display:flex;align-items:center;gap:8px}
.lm-history-sec::after{content:'';flex:1;height:1px;background:linear-gradient(90deg,#ffd6e2,transparent)}
.lm-history-item{display:flex;gap:12px;padding:10px 4px;border-bottom:1px dashed #ffd6e2}
.lm-history-item:last-child{border-bottom:none}
.lm-history-dot{width:30px;height:30px;line-height:30px;border-radius:50%;background:#fff0f5;color:#e91e63;text-align:center;flex-shrink:0;font-size:14px}
.lm-history-dot-pink{background:linear-gradient(135deg,#ff5e8a,#e91e63);color:#fff}
.lm-history-body{min-width:0}
.lm-history-line{font-size:14px;color:#5b2436}
.lm-history-time{font-size:12px;color:#d81b60;opacity:.75;margin-top:3px;word-break:break-all}
.lm-history-blank{text-align:center;padding:36px 10px;color:#c2185b}
.lm-history-blank .lm-empty-icon{font-size:60px}
.lm-history-blank p{margin:6px 0;font-size:17px;font-weight:700}
.lm-history-tip{font-size:13px!important;font-weight:400!important;opacity:.75;line-height:1.7}

/* ---------- 写信页 ---------- */
.lm-write-card{background:#fff;border:1px solid #ffd6e2;border-radius:24px;padding:26px 24px 30px;box-shadow:0 10px 40px rgba(233,30,99,.1);margin:22px 0}
.lm-write-head{text-align:center;margin-bottom:6px}
.lm-write-head .lm-btn{position:absolute;left:0} 
.lm-write-head{position:relative}
.lm-write-title{color:#8e1042;font-size:26px;margin:0 0 6px}
.lm-write-sub{color:#d81b60;opacity:.8;font-size:14px;margin:0}
.lm-write-date{text-align:center;color:#c2185b;background:#fff0f5;border-radius:14px;padding:8px 0;margin:16px 0 20px;font-size:14px}
.lm-label{display:block;font-weight:700;color:#8e1042;margin-bottom:8px;font-size:14px}
.lm-optional{font-weight:400;color:#d81b60;opacity:.75;font-size:12px}
.lm-textarea{width:100%;padding:14px;border:1px solid #ffc9da;border-radius:14px;font-size:15px;line-height:1.8;outline:none;background:#fffafc;color:#4a1d2e;resize:vertical;min-height:180px;font-family:inherit}
.lm-textarea:focus{border-color:#ff5e8a;box-shadow:0 0 0 3px rgba(255,94,138,.15)}
.lm-emoji-row{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:10px;padding:10px 12px;background:#fff0f5;border-radius:14px}
.lm-emoji-row>span{font-size:13px;color:#c2185b;margin-right:2px}
.lm-emoji{width:34px;height:34px;border:none;background:#fff;border-radius:10px;font-size:18px;cursor:pointer;transition:transform .15s,background .15s}
.lm-emoji:hover{transform:scale(1.18);background:#ffd6e2}
.lm-media-tools{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.lm-media-tools .lm-btn{cursor:pointer}
.lm-media-tip{font-size:12px;color:#d81b60;opacity:.75}
.lm-media-preview{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:10px;margin-top:12px}
.lm-media-preview-item{position:relative;border-radius:12px;overflow:hidden;background:#f5e6ec;border:1px solid #ffd6e2}
.lm-media-preview-item img,.lm-media-preview-item video{width:100%;height:110px;object-fit:cover;display:block}
.lm-media-preview-item video{background:#000}
.lm-media-remove{position:absolute;top:4px;right:4px;width:24px;height:24px;border:none;border-radius:50%;background:rgba(233,30,99,.85);color:#fff;font-size:13px;cursor:pointer;line-height:1}
.lm-media-remove:hover{background:#c2185b}
.lm-write-actions{display:flex;align-items:center;gap:14px;margin-top:22px;flex-wrap:wrap}
.lm-write-hint{font-size:12px;color:#d81b60;opacity:.7}
/* 写信上传进度条 */
.lm-progress{display:flex;align-items:center;gap:10px;margin-top:18px}
.lm-progress-track{flex:1;height:10px;background:#fce4ec;border-radius:10px;overflow:hidden;border:1px solid #f8bbd0}
.lm-progress-bar{height:100%;width:0%;background:linear-gradient(90deg,#ff6b9d,#ff2e63);border-radius:10px;transition:width .2s ease}
.lm-progress-text{font-size:12px;font-weight:bold;color:#ff2e63;min-width:38px;text-align:right}

/* ---------- 看信页 ---------- */
.lm-letter-card{background:linear-gradient(180deg,#fffdfd,#fff5f8);border:1px solid #ffe1ea;border-radius:24px;padding:30px 26px 26px;margin:22px 0;box-shadow:0 10px 40px rgba(233,30,99,.1)}
.lm-letter-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap;gap:8px}
.lm-banner{padding:10px 16px;border-radius:14px;font-size:13px;margin-bottom:16px}
.lm-banner-partner{background:#fff0f5;border:1px solid #ffb3c6;color:#c2185b}
.lm-banner-admin{background:#eef4ff;border:1px solid #c3d5ff;color:#3a5bbf}
.lm-letter-date{text-align:center;color:#d81b60;font-size:14px;letter-spacing:1px}
.lm-letter-title{text-align:center;color:#8e1042;font-size:26px;margin:12px 0 8px;line-height:1.4;word-break:break-all}
.lm-letter-divider{display:flex;align-items:center;gap:12px;color:#ff5e8a;margin:14px 0 20px}
.lm-letter-divider::before,.lm-letter-divider::after{content:'';flex:1;height:1px;background:linear-gradient(90deg,transparent,#ffb3c6)}
.lm-letter-content{font-size:16px;line-height:2.1;color:#4a1d2e;word-break:break-word;white-space:normal}
.lm-letter-media{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;margin-bottom:22px}
.lm-letter-img{border-radius:14px;overflow:hidden;display:block;border:1px solid #ffe1ea;box-shadow:0 4px 14px rgba(233,30,99,.1);transition:transform .25s}
.lm-letter-img:hover{transform:scale(1.02)}
.lm-letter-img img{width:100%;height:200px;object-fit:cover;display:block}
.lm-letter-video{border-radius:14px;overflow:hidden;grid-column:1/-1;background:#000}
.lm-letter-video video{width:100%;max-height:420px;display:block}
.lm-letter-foot{text-align:center;margin-top:24px;padding-top:16px;border-top:1px dashed #ffd6e2}
.lm-letter-foot-text{color:#d81b60;opacity:.7;font-size:12px}

/* ---------- 响应式：手机 ---------- */
@media (max-width:768px){
    .lm-hero{height:42vh;min-height:280px;border-radius:0 0 20px 20px}
    .lm-hero-title{font-size:30px;letter-spacing:8px}
    .lm-hero-sub{font-size:13px;padding:0 20px}
    .lm-hero-icon{width:54px;height:54px;line-height:54px;font-size:26px}
    .lm-heart-icon{width:68px;height:68px;font-size:30px}
    .lm-panel{padding:16px 12px 28px}
    .lm-actions{grid-template-columns:repeat(5,1fr);gap:6px}
    .lm-action{padding:10px 2px;font-size:12px}
    .lm-action-icon{width:36px;height:36px;line-height:36px;font-size:17px}
    .lm-login-tip{flex-direction:column;gap:8px;text-align:center;white-space:normal;max-width:88%}
    .lm-letter-title{font-size:21px}
    .lm-letter-media{grid-template-columns:repeat(2,1fr)}
    .lm-letter-img img{height:140px}
    .lm-search form{flex-direction:column}
    .lm-input-date{max-width:none}
    .lm-write-card{padding:20px 14px}
    .lm-media-preview{grid-template-columns:repeat(auto-fill,minmax(90px,1fr))}
}
@media (max-width:400px){
    .lm-actions{grid-template-columns:repeat(3,1fr)}
    .lm-action:nth-child(4),.lm-action:nth-child(5){grid-column:auto}
}