@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&display=swap');
:root{--bg:#080d10;--panel:#11191d;--panel2:#172126;--line:#29353a;--muted:#8f9ca1;--text:#f0f3f4;--green:#20c56a;--green2:#159b55}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:'DM Sans',Arial,sans-serif;height:100vh;overflow:hidden}.hidden{display:none!important}.login{height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#071012,#121e22)}.login-card{width:min(430px,calc(100% - 32px));padding:42px 38px;text-align:center;background:#10191d;border:1px solid #2a383d;border-radius:25px;box-shadow:0 25px 80px #0008}.brand-mark,.welcome-icon{margin:auto;display:grid;place-items:center;width:62px;height:62px;border-radius:20px;background:#6b4fc2;color:white;font-size:31px}.login h1{margin:18px 0 8px;font-size:34px}.login p{color:var(--muted);line-height:1.5;margin-bottom:29px}.login form{display:grid;gap:11px;text-align:left}.login label{font-size:13px;color:#b8c1c4}.login input,.search input,.composer input{border:0;outline:0;color:var(--text);background:#1b282d}.login input{padding:15px 16px;border-radius:12px;border:1px solid #334147;font:inherit}.login button{margin-top:5px;padding:15px;border:0;border-radius:12px;background:var(--green);font-weight:700;font-size:15px;color:#062b18;cursor:pointer}.login small{display:block;color:#68777c;margin-top:24px}.app{display:flex;height:100vh;background:#0c1417}.sidebar{width:330px;background:#10191d;border-right:1px solid var(--line);display:flex;flex-direction:column}.side-head,.chat-head{height:87px;display:flex;align-items:center;padding:0 23px;border-bottom:1px solid var(--line)}.side-head{justify-content:space-between}.brand{display:flex;gap:11px;align-items:center}.brand-icon{display:grid;place-items:center;width:35px;height:35px;border-radius:11px;background:#6d52c7;font-size:20px}.brand strong{display:block;font-size:17px}.brand small{color:#839196;font-size:11px}.icon-btn,.action,.round-action,.mobile-menu{background:none;border:0;color:#c7d0d3;font-size:25px;cursor:pointer}.search{margin:17px 18px 13px;padding:10px 13px;display:flex;align-items:center;gap:8px;border-radius:11px;background:#1b282d;color:#8b989d}.search input{width:100%;font:inherit}.section-title{padding:7px 22px;color:#68777c;font-size:11px;text-transform:uppercase;letter-spacing:1px}.online-title{margin-top:16px}.online-title span{float:right;background:#253339;color:#93a1a5;padding:1px 7px;border-radius:9px}.room-list,.user-list{overflow:auto}.room{padding:13px 18px;display:flex;gap:12px;align-items:center;cursor:pointer;border-left:3px solid transparent}.room:hover,.room.active{background:#1c2b30}.room.active{border-color:var(--green)}.avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:#6d52c7;color:#e9dcff;font-weight:700;flex:none}.room-info{min-width:0}.room-info strong,.room-info small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.room-info strong{font-size:14px}.room-info small{color:#859398;font-size:12px;margin-top:3px}.user{display:flex;align-items:center;gap:10px;padding:8px 23px}.user .avatar{width:27px;height:27px;font-size:10px}.user small{margin-left:auto;color:var(--green);font-size:11px}.profile{margin-top:auto;padding:15px 20px;border-top:1px solid var(--line);display:flex;align-items:center;gap:10px}.profile strong,.profile small{display:block}.profile small{font-size:11px;color:var(--green)}.profile .icon-btn{margin-left:auto}.chat{flex:1;min-width:0;display:flex;flex-direction:column;background-color:#0b1215;background-image:linear-gradient(#071014dd,#071014dd),url('chat-bg.jpg');background-size:540px 980px;background-repeat:repeat}.chat-head{background:#0c1418eF;gap:13px}.room-avatar{width:48px;height:48px}.chat-title{min-width:0;flex:1}.chat-title h2{font-size:18px;margin:0 0 4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-title span{font-size:12px;color:#829096}.head-actions{display:flex;gap:18px}.action{font-size:26px}.messages{flex:1;overflow-y:auto;padding:30px clamp(18px,6vw,100px) 18px}.welcome{text-align:center;max-width:390px;margin:45px auto 30px;color:#87959a}.welcome-icon{width:48px;height:48px;font-size:22px;border-radius:15px}.welcome h3{color:#dde4e5;font-size:18px;margin:16px 0 7px}.welcome p{font-size:13px;line-height:1.5;margin:0}.message{display:flex;gap:10px;max-width:720px;margin:13px 0}.message.mine{margin-left:auto;flex-direction:row-reverse}.message .avatar{width:31px;height:31px;font-size:10px}.bubble{background:#18252a;border:1px solid #26363b;border-radius:5px 16px 16px 16px;padding:10px 13px;min-width:80px}.mine .bubble{background:#125e42;border-color:#187851;border-radius:16px 5px 16px 16px}.bubble .meta{font-size:11px;color:#a5b1b4;margin-bottom:3px}.mine .meta{color:#b2d6c2}.bubble p{margin:0;font-size:14px;line-height:1.4;white-space:pre-wrap;overflow-wrap:anywhere}.bubble a{color:#aeecc9}.bubble time{display:block;text-align:right;font-size:10px;color:#9bb4aa;margin-top:5px}.typing{height:22px;padding:0 6vw;color:#94a3a7;font-size:12px;font-style:italic}.composer{margin:0 clamp(14px,4vw,70px) 20px;padding:7px 8px 7px 10px;height:61px;display:flex;align-items:center;gap:7px;background:#1a272c;border-radius:18px}.composer input{flex:1;min-width:70px;font-size:15px}.round-action{font-size:25px;width:31px}.camera{font-size:21px}.send-btn{width:46px;height:46px;border-radius:50%;border:0;background:var(--green);color:#062b18;font-size:20px;cursor:pointer}.file-preview{position:absolute;bottom:93px;right:8%;background:#18262a;border:1px solid #31505a;padding:10px 15px;border-radius:10px;color:#bcebd0}.toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:#e4f9eb;color:#083b20;padding:11px 16px;border-radius:10px;display:none;font-size:13px}.mobile-menu{display:none}
@media(max-width:720px){.sidebar{position:fixed;z-index:5;left:-340px;top:0;height:100%;transition:left .25s}.sidebar.open{left:0;box-shadow:20px 0 60px #0008}.mobile-menu{display:block;font-size:20px}.chat-head{padding:0 14px}.head-actions{gap:8px}.messages{padding:20px 14px}.composer{margin-left:9px;margin-right:9px}.composer .camera{display:none}}