*{box-sizing:border-box} :root{--ink:#273a38;--muted:#7d8882;--green:#3c6557;--line:#e4e9e1;--paper:#fafbf7;--warm:#f1eee6} body{margin:0;color:var(--ink);font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;background:var(--paper)}button,input,select,textarea{font:inherit}button,.button{cursor:pointer;border:0;border-radius:9px;padding:10px 16px;transition:background .15s;text-decoration:none;display:inline-block}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible{outline:3px solid #8aaf9d;outline-offset:3px}input,select,textarea{border:1px solid #d9e0d6;border-radius:8px;background:#fff;padding:10px 12px;color:var(--ink);outline:none;max-width:100%}input:focus,textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px #3c655712}label{display:block;font-size:12px;font-weight:600}label input,label select{display:block;margin-top:6px;width:100%}h1,h2,h3,p{margin:0}h1{font-size:27px;letter-spacing:-.7px;font-weight:600}h2{font-size:22px}h3{font-size:14px;margin:22px 0 12px}.muted{color:var(--muted);font-size:13px}.primary{background:var(--green);color:#fff}.primary:hover{background:#2c5144}.secondary{background:#edf2eb;color:var(--green);border:1px solid #dbe4d8}.quiet{background:transparent;color:var(--muted)}.quiet:hover{background:#edf1e9;color:var(--ink)}.eyebrow{font-size:10px;letter-spacing:2.4px;color:#91a18e;font-weight:600;margin-bottom:9px}.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:15px;background:var(--green);color:#fff;font-family:serif;font-size:25px;margin-bottom:24px}.brand-mark.small{height:32px;width:32px;font-size:18px;border-radius:10px;margin:0 9px 0 0}.login-wrap{min-height:100dvh;display:grid;place-items:center;background:radial-gradient(ellipse at 20% 10%,#e8eee0,transparent 60%),var(--paper);padding:24px}.login-card{width:440px;max-width:100%;background:#ffffffd9;border:1px solid #e2e7dc;padding:44px;border-radius:22px;box-shadow:0 20px 80px #3c65570a}.login-card h1{margin-bottom:12px}.login-card form{margin-top:32px}.login-card form input{width:100%;margin:8px 0 16px}.login-card .primary{width:100%;display:flex;justify-content:space-between}.privacy-note{border-top:1px solid var(--line);margin-top:28px;padding-top:18px;color:#939b92;font-size:11px}.error{color:#ab4b3d;font-size:13px;min-height:20px;margin-top:10px}.topbar{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:#fff;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;color:var(--ink);text-decoration:none;font-size:17px;font-weight:600}.brand-sub{font-size:11px;font-weight:400;color:var(--muted);margin-left:16px;padding-left:16px;border-left:1px solid var(--line)}.top-actions{display:flex;align-items:center;gap:16px}.pill{font-size:11px;background:#edf2e8;color:var(--green);padding:4px 10px;border-radius:20px}.layout{display:grid;grid-template-columns:258px minmax(0,1fr);height:calc(100dvh - 68px)}.sidebar{padding:30px 18px 20px;border-right:1px solid var(--line);display:flex;flex-direction:column;overflow:auto;background:#f5f7f0}.aside-title{font-size:12px;color:var(--muted);padding:0 12px 20px;display:flex;justify-content:space-between}.collection{width:100%;padding:15px;text-align:left;margin-bottom:8px;background:transparent;color:var(--ink);border:1px solid transparent}.collection.active{background:white;border-color:#dce5d6;box-shadow:0 3px 10px #00000003}.collection strong{display:block;font-size:14px;font-weight:600;overflow-wrap:anywhere}.collection small{font-size:11px;color:var(--muted)}.import-box{border:1px dashed #cdd8c7;border-radius:12px;padding:16px;margin-top:22px}.import-box p{font-size:12px;font-weight:600;margin-bottom:6px}.import-box small{font-size:11px;color:var(--muted);display:block}.import-box .button{font-size:12px;margin-top:12px;width:100%;text-align:center}.import-box #import-status{font-weight:400;overflow-wrap:anywhere;margin-top:8px}.aside-footer{margin-top:auto;padding:32px 12px 0;color:#a0a898;font-size:10px;line-height:1.9}.reader{min-height:0;display:flex;flex-direction:column;background:var(--paper)}.reader-header{display:flex;align-items:center;justify-content:space-between;padding:26px 40px 18px;gap:16px;background:#fff}.reader-header .eyebrow{margin-bottom:3px}.reader-header h1{font-size:23px;margin-bottom:4px}.filters{padding:14px 40px;display:flex;align-items:flex-end;gap:12px;border-top:1px solid #f3f4ee;border-bottom:1px solid var(--line);background:#fff}.filters label{color:var(--muted);font-size:10px}.filters input{font-size:12px;padding:7px 9px}.compact{font-size:12px;padding:8px 18px}.filters .quiet{font-size:12px;padding:8px}.range-dash{padding-bottom:8px;color:#aab4a4}.filter-count{margin-left:auto;color:var(--muted);font-size:11px;padding-bottom:9px}.timeline{flex:1;min-height:0;overflow-y:auto;padding:0 40px 26px;scrollbar-color:#cad3c5 transparent;scrollbar-width:thin;overflow-anchor:none}.older-wrap{text-align:center;padding:18px 0 12px}.older-wrap button{font-size:11px}.day{text-align:center;font-size:11px;color:#8d9887;display:flex;align-items:center;justify-content:center;gap:16px;margin:28px 0}.day:before,.day:after{content:"";height:1px;background:var(--line);width:54px}.message{display:flex;gap:10px;margin:19px 0;max-width:100%;align-items:flex-start}.message.out{flex-direction:row-reverse}.avatar{width:32px;height:32px;flex:0 0 32px;background:#e5e9dd;border:1px solid #dce1d2;border-radius:10px;display:grid;place-items:center;color:#6a785e;font-size:12px}.out .avatar{background:#dae6dc;color:var(--green)}.message-body{max-width:min(76%,660px);min-width:0}.message-meta{display:flex;gap:12px;font-size:10px;color:#90998a;margin-bottom:5px}.out .message-meta{flex-direction:row-reverse}.bubble{border:1px solid #e5e8df;border-radius:2px 14px 14px 14px;background:#fff;padding:11px 15px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px}.out .bubble{background:#e7eee1;border-color:#dce6d5;border-radius:14px 2px 14px 14px}.bubble img{display:block;max-width:100%;max-height:300px;object-fit:contain;border-radius:7px;cursor:zoom-in}.bubble img.emoji{max-height:150px;max-width:180px}.bubble video{display:block;max-width:100%;max-height:350px;border-radius:7px;background:#17201e}.bubble audio{display:block;width:280px;max-width:100%}.bubble .caption{font-size:11px;color:var(--muted);margin-top:6px}.missing{font-size:12px;color:#99785a}.missing-note{background:#fbf4e5;color:#967d4c;font-size:11px;padding:9px 40px}.system{text-align:center;color:#929b8c;font-size:11px;margin:20px}.reader-footer{padding:9px 40px;background:#fff;border-top:1px solid var(--line);font-size:10px;color:#9aa191;display:flex;justify-content:space-between;gap:12px}.empty{text-align:center;color:var(--muted);padding:80px 20px}.empty span{font-size:45px;color:#bdcbb4}.empty h2{font-size:17px;font-weight:400;margin:12px 0}.empty p{font-size:12px}dialog{border:1px solid var(--line);border-radius:18px;padding:28px;width:520px;max-width:calc(100vw - 28px);max-height:85dvh;color:var(--ink);box-shadow:0 30px 120px #14271f40}dialog::backdrop{background:#1e302855;backdrop-filter:blur(3px)}.dialog-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:12px}#share-form{display:grid;grid-template-columns:1fr 100px;gap:14px;margin-top:22px}#share-form button{grid-column:1/-1}#share-result{background:#f1f5eb;padding:16px;border-radius:10px;margin-top:18px;font-size:12px}#share-text{width:100%;margin:9px 0;font-size:12px;resize:none}.share-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}.share-item small{display:block;color:var(--muted);font-size:11px}.share-item button{font-size:12px;color:#a2695d}#image-dialog{width:auto;padding:12px}#full-image{display:block;max-width:85vw;max-height:72dvh;object-fit:contain}#toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);background:#273e33;color:#fff;padding:12px 22px;border-radius:10px;box-shadow:0 8px 25px #0002;z-index:100;font-size:13px;max-width:90vw}[hidden]{display:none!important}
@media(max-width:760px){.topbar{height:58px;padding:0 16px}.brand-sub{display:none}.brand{font-size:15px}.top-actions{gap:6px}.layout{height:calc(100dvh - 58px);grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr)}.sidebar{display:block;padding:10px 14px;border-right:0;border-bottom:1px solid var(--line);max-height:150px}.aside-title,.aside-footer{display:none}#collections{display:flex;gap:8px;overflow-x:auto}.collection{width:auto;min-width:130px;margin:0;padding:8px 12px}.collection strong{font-size:12px}.import-box{margin:8px 0 0;padding:8px;display:flex;align-items:center;gap:8px}.import-box p,.import-box small{display:none}.import-box .button{margin:0;width:auto}.import-box #import-status{display:block;font-size:10px;margin:0}.reader-header{padding:16px 18px 12px}.reader-header h1{font-size:20px}.reader-header .muted{font-size:10px}.reader-header button{font-size:11px;padding:8px 10px;white-space:nowrap}.filters{padding:10px 14px;gap:7px;flex-wrap:wrap}.filters input{width:137px}.filters .filter-count{font-size:10px;padding:0}.filters label{flex:1}.filters .quiet{padding:7px 4px}.range-dash{display:none}.timeline{padding:0 14px 20px}.message-body{max-width:82%}.bubble{font-size:13px;padding:9px 11px}.avatar{width:27px;height:27px;flex-basis:27px;font-size:10px}.message{gap:7px}.bubble audio{width:235px}.reader-footer{padding:8px 14px;font-size:9px}.missing-note{padding:7px 15px}.login-card{padding:30px}.login-card h1{font-size:24px}}
.quote{margin:0 0 10px;padding:8px 10px;border-left:3px solid #bccab2;background:#edf0e866;font-size:12px;color:#75816e;white-space:pre-wrap}.quote strong{display:block;font-size:10px;margin-bottom:3px}

/* Keep both sides of a conversation within one comfortable reading column. */
#messages,.older-wrap,.empty{width:100%;max-width:720px;margin-left:auto;margin-right:auto}
.reader-header,.filters,.missing-note,.reader-footer{padding-left:max(24px,calc((100% - 720px)/2));padding-right:max(24px,calc((100% - 720px)/2))}
.timeline{padding-left:24px;padding-right:24px}
.message-body{max-width:76%}
.filters{gap:10px;align-items:flex-end;flex-wrap:wrap}
.filters select{font-size:12px;padding:8px 10px;min-width:156px}
.filters #chat-time{min-width:128px}
.filters .day-arrow{font-size:23px;line-height:1;padding:7px 9px;margin-bottom:1px}
.filters label{flex:none}
.filters .filter-count{font-size:10px;white-space:nowrap;margin-left:0}
.bubble img:not(.emoji){width:320px;height:230px;object-fit:contain}
.bubble img.emoji{width:128px;height:128px;object-fit:contain}
.bubble video{width:320px;height:240px;object-fit:contain}
.message-target .bubble{box-shadow:0 0 0 2px #8fa982}
@media(max-width:760px){
 .reader-header,.filters,.missing-note,.reader-footer{padding-left:16px;padding-right:16px}
 .timeline{padding-left:14px;padding-right:14px}
 .filters{gap:6px}.filters select{min-width:0;font-size:12px;padding:8px 6px}
 .filters #chat-time{min-width:0}.filters label{flex:1;min-width:0}
 .filters label:first-of-type{flex:1.4}.filters .day-arrow{padding:8px 4px}
 #latest{font-size:11px}.filters .filter-count{margin-left:auto}
 .message-body{max-width:80%}.bubble img:not(.emoji){height:180px}.bubble video{height:190px}
}

.compact-reading .topbar,.compact-reading .sidebar,.compact-reading .reader-header,.compact-reading .filters{display:none}
.compact-reading .layout{height:100dvh;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr)}
@media(max-width:420px){.top-actions{gap:2px}.top-actions .pill{display:none}.topbar{padding:0 12px}}

#search-dialog{width:640px}#search-form{display:flex;gap:10px}#search-query{flex:1;min-width:0}.search-help{margin:12px 0}#search-status{font-size:12px;margin:10px 0;color:var(--muted)}.search-result{display:block;width:100%;text-align:left;background:#fff;color:var(--ink);border:1px solid var(--line);margin:8px 0;padding:12px}.search-result:hover{background:#f1f5ee}.search-result-meta{font-size:11px;color:var(--muted)}.search-snippet{margin-top:6px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px}mark{background:#f4e5a8;color:inherit}.system.message-target{background:#f4e5a8;padding:8px;border-radius:8px}#search-more{width:100%;margin-top:12px}

/* A share grants one conversation; collection switching belongs to administration. */
.shared-reader .sidebar,.shared-reader .reader-header .eyebrow,.shared-reader #chat-title{display:none}
.shared-reader .layout{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr)}
.shared-reader .reader-header{padding-top:12px;padding-bottom:12px}

/* Wrap whole control groups instead of squeezing the date between buttons. */
.filters{flex-shrink:0;gap:10px 18px}
.date-navigation{display:flex;align-items:flex-end;gap:6px;flex:1 1 280px;min-width:0;max-width:360px}
.filters .date-navigation label{flex:1 1 auto;min-width:0}
.filters .date-navigation select{width:100%;min-width:0;font-size:12px;padding:9px 8px}
.filters .date-navigation .day-arrow{flex:0 0 26px;padding:9px 4px;margin:0;min-height:38px}
.navigation-actions{display:flex;align-items:center;gap:8px;flex:1 1 240px;min-width:0;flex-wrap:wrap}
.filters .navigation-actions button{flex:0 0 auto;font-size:12px;white-space:nowrap;padding:8px 10px;min-height:38px}
.filters .navigation-actions .filter-count{margin-left:auto;padding:0;white-space:nowrap}
.reader-header,.reader-footer{flex-shrink:0}

/* Avoid intrinsic grid sizing expanding the login card beyond a narrow viewport. */
.login-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;min-height:100dvh;width:100%;min-width:0;padding:24px}
.login-card{flex:0 0 auto;width:100%;max-width:440px;min-width:0;overflow-wrap:anywhere}
.login-card form,.login-card form input,.login-card .primary{min-width:0;max-width:100%}
.login-card form input{font-size:16px}
.login-card .primary{gap:12px;align-items:center;text-align:left;white-space:normal}
@media(max-width:480px){.login-wrap{padding:16px}.login-card{padding:26px 22px;border-radius:18px}.login-card form{margin-top:24px}.privacy-note{margin-top:22px;padding-top:16px}}
@media(max-height:600px){.login-wrap{justify-content:flex-start;padding-top:16px;padding-bottom:16px}.login-card .brand-mark{margin-bottom:12px}.login-card form{margin-top:18px}}