:root{color-scheme:light;--primary:#6750a4;--primary-dark:#513b8b;--surface:#fff;--soft:#f5f2fa;--border:#e5dfec;--text:#24212a;--muted:#706b77;--danger:#b3261e;--success:#247a45;--shadow:0 18px 55px rgba(39,28,67,.13);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}
[data-theme="dark"]{color-scheme:dark;--primary:#c9b5ff;--primary-dark:#b49aec;--surface:#211e27;--soft:#302b39;--border:#403a49;--text:#f2edf6;--muted:#b8afc0;--danger:#ffb4ab;--success:#83d99f;--shadow:0 18px 55px rgba(0,0,0,.4)}
*{box-sizing:border-box}[hidden]{display:none!important}html,body{margin:0;min-height:100%;color:var(--text);background:#eeeaf4}button,input,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:var(--primary);text-decoration:none}
.auth-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at top left,#dcd1f4,transparent 40%),linear-gradient(145deg,#f8f6fb,#ece7f4)}
.login-page{align-items:start;padding-top:clamp(24px,8vh,80px)}
.auth-card{width:min(100%,420px);background:var(--surface);border:1px solid rgba(255,255,255,.7);border-radius:26px;padding:36px;box-shadow:var(--shadow)}.brand-mark{width:62px;height:62px;display:grid;place-items:center;margin:0 auto 18px;background:var(--soft);border-radius:20px;font-size:32px}.auth-card h1{text-align:center;margin:0 0 8px;font-size:28px}.muted{color:var(--muted)}.auth-card>.muted{text-align:center;margin:0 0 26px}
.stack-form{display:grid;gap:17px}.stack-form label,.inline-form label,.setting-form label{display:grid;gap:7px;font-size:14px;font-weight:650}.stack-form input,.inline-form input,.password-form input,.setting-form input{width:100%;padding:13px 14px;border:1px solid var(--border);border-radius:12px;background:#fff;outline:none}.stack-form input:focus,.inline-form input:focus,.password-form input:focus,.setting-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(103,80,164,.12)}.password-wrap{display:flex;position:relative}.password-wrap input{padding-right:48px}.password-wrap button{position:absolute;right:3px;top:3px;bottom:3px;border:0;background:transparent;padding:0 12px;cursor:pointer}
.primary-button{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:12px;padding:13px 18px;background:var(--primary);color:#fff;font-weight:700;cursor:pointer}.primary-button:hover{background:var(--primary-dark)}.full-width{width:100%}.alert{padding:12px 14px;border-radius:11px;margin:0 0 18px;font-size:14px}.alert.error{background:#ffdad6;color:#7e1510}.alert.success{background:#d9f4df;color:#175d32}
.chat-page{height:100dvh;overflow:hidden;display:grid;place-items:center;padding:24px;background:linear-gradient(135deg,#e9e2f5,#f8f6fb)}.chat-shell{--chat-font-size:16px;position:relative;width:min(820px,100%);height:min(820px,100%);background:var(--surface);display:grid;grid-template-rows:auto 1fr auto auto auto;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.8);border-radius:22px;overflow:hidden}.chat-header{min-height:68px;display:flex;align-items:center;justify-content:space-between;padding:11px 18px;border-bottom:1px solid var(--border);z-index:3}.chat-header h1{font-size:20px;margin:0}.status{display:block;font-size:12px;color:var(--muted);margin-top:3px}.status.online{color:var(--success)}.header-actions{display:flex;align-items:center;gap:10px}.header-actions form{margin:0}.user-name{font-size:14px;font-weight:650}.icon-link,.icon-button{border:0;background:var(--soft);color:var(--text);width:38px;height:38px;display:grid;place-items:center;border-radius:11px;cursor:pointer;font-size:18px}.theme-switch,.font-switch{display:flex;gap:3px;padding:3px;background:var(--soft);border:1px solid var(--border);border-radius:12px}.theme-switch button,.font-switch button{width:32px;height:30px;display:grid;place-items:center;border:0;border-radius:8px;background:transparent;opacity:.58;cursor:pointer;font-size:16px;transition:background .15s,opacity .15s,box-shadow .15s}.theme-switch button:hover,.font-switch button:hover{opacity:1}.theme-switch button.active{background:var(--surface);opacity:1;box-shadow:0 2px 7px rgba(39,28,67,.16)}.font-switch button{width:34px;font-size:13px;font-weight:750;color:var(--text)}.font-switch button:disabled{opacity:.25;cursor:not-allowed}
[data-theme="dark"] .chat-page{background:linear-gradient(135deg,#121016,#28222f)}[data-theme="dark"] .chat-shell{border-color:#38323f}[data-theme="dark"] .messages{background:#19171e linear-gradient(160deg,rgba(39,34,46,.78),rgba(20,18,24,.88))}[data-theme="dark"] .message.theirs{background:#2b2731}[data-theme="dark"] .message.mine{background:#493c62}[data-theme="dark"] .upload-preview,[data-theme="dark"] .emoji-panel,[data-theme="dark"] .composer{background:var(--surface)}[data-theme="dark"] .composer textarea,[data-theme="dark"] .stack-form input,[data-theme="dark"] .inline-form input,[data-theme="dark"] .password-form input{background:#19171e;color:var(--text)}[data-theme="dark"] .send-button{background:#8068bc;color:#fff}
.messages{overflow-y:auto;padding:20px;background:#f5f2f8 linear-gradient(160deg,rgba(255,255,255,.72),rgba(238,232,246,.72))}.load-older{display:block;margin:0 auto 18px;padding:8px 14px;border:1px solid var(--border);background:#fff;border-radius:99px;cursor:pointer;color:var(--primary)}#message-list{display:flex;flex-direction:column;gap:10px}.message{max-width:min(72%,610px);padding:10px 13px;border-radius:17px;box-shadow:0 2px 8px rgba(30,20,45,.07);overflow:hidden}.message.theirs{align-self:flex-end;background:#fff;border-bottom-right-radius:5px}.message.mine{align-self:flex-start;background:#e8def8;border-bottom-left-radius:5px}.message-meta{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:5px;font-size:11px}.message-meta strong{color:var(--primary)}.message-author{display:inline-flex;align-items:center;gap:5px}.message-meta time{color:var(--muted)}.message p{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.42;font-size:var(--chat-font-size)}.message-image{display:block;max-width:100%;max-height:420px;margin-top:7px;border-radius:11px;cursor:zoom-in;object-fit:contain}.empty-state{height:100%;min-height:300px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--muted);gap:6px}.empty-state strong{color:var(--text)}
.upload-preview{display:flex;align-items:center;gap:10px;padding:8px 14px;border-top:1px solid var(--border);background:#fff}.upload-preview img{width:48px;height:48px;border-radius:9px;object-fit:cover}.upload-preview span{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.emoji-panel{position:absolute;left:12px;bottom:72px;z-index:8;width:min(330px,calc(100% - 24px));display:grid;grid-template-columns:repeat(8,1fr);gap:3px;padding:10px;background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:0 12px 35px rgba(39,28,67,.2)}.emoji-panel button{font-size:22px;border:0;background:transparent;border-radius:8px;padding:6px 3px;cursor:pointer}.emoji-panel button:hover{background:var(--soft)}
.typing-indicator{display:flex;align-items:center;gap:8px;min-height:30px;padding:5px 16px;background:var(--surface);color:var(--muted);font-size:12px;border-top:1px solid var(--border)}.typing-dots{display:flex;align-items:center;gap:3px;padding:6px 8px;background:var(--soft);border-radius:12px}.typing-dots i{display:block;width:5px;height:5px;border-radius:50%;background:var(--primary);animation:typing-bounce 1.15s infinite ease-in-out}.typing-dots i:nth-child(2){animation-delay:.15s}.typing-dots i:nth-child(3){animation-delay:.3s}@keyframes typing-bounce{0%,60%,100%{transform:translateY(0);opacity:.45}30%{transform:translateY(-4px);opacity:1}}
.composer{display:flex;align-items:flex-end;gap:7px;padding:10px max(12px,env(safe-area-inset-right)) calc(10px + env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left));border-top:1px solid var(--border);background:#fff}.composer textarea{flex:1;resize:none;min-height:44px;max-height:130px;padding:11px 14px;border:1px solid var(--border);border-radius:17px;outline:none;line-height:1.35;font-size:var(--chat-font-size)}.composer textarea:focus{border-color:var(--primary)}.composer-button,.send-button{width:44px;height:44px;flex:0 0 44px;border:0;border-radius:14px;background:var(--soft);cursor:pointer;font-size:20px}.send-button{background:var(--primary);color:#fff}.send-button:disabled{opacity:.55}.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);z-index:20;background:#332f39;color:#fff;padding:10px 16px;border-radius:99px;box-shadow:var(--shadow);font-size:14px;text-align:center}.image-dialog{padding:0;border:0;background:transparent;max-width:94vw;max-height:94vh}.image-dialog::backdrop{background:rgba(10,8,14,.88)}.image-dialog img{display:block;max-width:92vw;max-height:90vh;object-fit:contain}.image-dialog button{position:fixed;top:14px;right:16px;border:0;background:#fff;width:42px;height:42px;border-radius:50%;font-size:26px;cursor:pointer}
.admin-page{min-height:100vh;background:#f5f2f8}.admin-header{height:auto;min-height:76px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:25px;padding:16px max(20px,calc((100vw - 1180px)/2))}.admin-header h1{font-size:22px;margin:0}.admin-main{max-width:1180px;margin:28px auto;padding:0 18px 40px;display:grid;gap:20px}.admin-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px;box-shadow:0 7px 25px rgba(39,28,67,.06)}.admin-card h2{font-size:19px;margin:0 0 18px}.inline-form{display:grid;grid-template-columns:1fr 1.3fr 1fr auto;align-items:end;gap:12px}.setting-form{display:grid;grid-template-columns:minmax(220px,520px) auto;align-items:end;gap:12px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--border);white-space:nowrap}th{font-size:12px;text-transform:uppercase;color:var(--muted)}.badge{display:inline-block;padding:4px 8px;border-radius:99px;font-size:12px}.badge.active{background:#d9f4df;color:#175d32}.badge.blocked{background:#ffdad6;color:#7e1510}.actions{display:flex;align-items:center;gap:7px}.actions form{margin:0}.password-form{display:flex;gap:5px}.password-form input{padding:8px;width:130px}.small-button,.danger-button{border:1px solid var(--border);background:#fff;padding:8px 10px;border-radius:9px;cursor:pointer}.danger-button{color:var(--danger);border-color:#f0c4c1}.moderation-list{display:grid}.moderation-list article{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:12px 0;border-bottom:1px solid var(--border)}.moderation-list article:last-child{border:0}.moderation-list p{margin:4px 0 0}.moderation-list time{color:var(--muted);font-size:12px;margin-left:10px}
@media(max-width:700px){.auth-card{padding:26px 21px;border-radius:21px}.chat-page{padding:0}.chat-shell{width:100%;height:100%;border:0;border-radius:0}.chat-header{min-height:64px;padding:10px 12px}.chat-header h1{font-size:18px}.header-actions{gap:5px}.theme-switch button{width:27px}.font-switch button{width:29px}.user-name{display:none}.messages{padding:13px 10px}.message{max-width:87%}.message-image{max-height:310px}.composer{gap:4px}.composer-button,.send-button{width:42px;height:42px;flex-basis:42px}.emoji-panel{bottom:68px}.inline-form,.setting-form{grid-template-columns:1fr}.admin-header{align-items:flex-start;flex-direction:column;gap:8px}.admin-card{padding:17px}.actions{align-items:flex-start;flex-direction:column}.moderation-list article{align-items:flex-start}}
.logout-button{min-height:44px;padding:0 14px;border:1px solid var(--border);border-radius:11px;background:var(--soft);color:var(--danger);font-size:14px;font-weight:650;white-space:nowrap;cursor:pointer}.logout-button:hover{background:var(--surface);border-color:var(--primary)}.logout-button:focus-visible{outline:2px solid var(--primary);outline-offset:3px}.chat-header{gap:12px;flex-wrap:wrap}.chat-header>div:first-child{min-width:0;overflow-wrap:anywhere}.header-actions{flex-wrap:wrap;margin-left:auto}#logout-form{flex-shrink:0}
@media(max-width:700px){.logout-button{padding:0 11px;font-size:13px}.chat-header{gap:8px}.header-actions{max-width:100%}}
.composer{flex-wrap:wrap}.composer textarea{min-width:0}.reply-preview{flex:0 0 100%;display:flex;align-items:center;gap:10px;padding:8px 10px;background:var(--soft);border-left:3px solid var(--primary);border-radius:9px}.reply-preview-content{flex:1;min-width:0}.reply-preview-content strong,.message-quote strong{display:block;color:var(--primary);font-size:12px;margin-bottom:4px}.reply-preview-content span,.message-quote span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere;white-space:pre-wrap;font-size:13px;line-height:1.4}.reply-preview .icon-button{flex:0 0 44px;height:44px}.message-quote{margin:0 0 8px;padding:8px 10px;border-left:3px solid var(--primary);border-radius:7px;background:var(--soft);color:var(--muted);font-size:13px;overflow-wrap:anywhere}.message{position:relative;padding-right:54px;min-height:64px}.reply-button{position:absolute;right:5px;top:50%;transform:translateY(-50%);display:grid;place-items:center;width:44px;height:44px;padding:0;border:0;border-radius:10px;background:transparent;color:var(--primary);cursor:pointer}.reply-button:hover{background:var(--soft)}.reply-button:focus-visible{outline:2px solid var(--primary);outline-offset:2px}@media(pointer:coarse){.reply-button{min-height:44px}}
#message-list{width:100%;min-width:0}.message.mine{margin-left:0;margin-right:auto}.message.theirs{margin-left:auto;margin-right:0}
.composer textarea{scrollbar-width:none}.composer textarea::-webkit-scrollbar{display:none}
.message p a{text-decoration:underline;text-underline-offset:2px;overflow-wrap:anywhere}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}