:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#e9edef;background:#0b141a;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top,#14342c,#071014 55%)}button,input,textarea{font:inherit}.hidden{display:none!important}.login{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(390px,100%);padding:42px;border:1px solid #25363f;border-radius:20px;background:#111b21;box-shadow:0 28px 80px #0008;text-align:center}.brand-mark,.hero-mark{display:grid;place-items:center;margin:0 auto 18px;width:60px;height:60px;border-radius:18px;background:linear-gradient(135deg,#25d366,#00a884);font-size:32px;font-weight:900;color:#052e25;box-shadow:0 10px 30px #00a88433}.login-card h1{margin:0;font-size:26px}.login-card p{margin:8px 0 26px;color:#8696a0}.login-card input{width:100%;padding:14px 16px;border:1px solid #33434c;border-radius:10px;background:#202c33;color:#fff;outline:none}.login-card input:focus{border-color:#00a884}.login-card button{width:100%;margin-top:14px;padding:13px;border:0;border-radius:10px;background:#00a884;color:white;font-weight:700;cursor:pointer}.login-card small{display:block;height:18px;margin-top:12px;color:#ff7070}.app{width:min(1600px,100%);height:100vh;margin:auto;display:grid;grid-template-columns:420px 1fr;background:#111b21;box-shadow:0 0 60px #0008}.sidebar{min-width:0;border-right:1px solid #283942;display:flex;flex-direction:column}.topbar,.chat-header{height:66px;padding:10px 16px;background:#202c33;display:flex;align-items:center;justify-content:space-between}.account-wrap,.chat-header>div{min-width:0;display:flex;align-items:center;gap:11px}.avatar{width:42px;height:42px;border-radius:50%;object-fit:cover;background:#35434b}.account-wrap div,.chat-header div{min-width:0;display:flex;flex-direction:column}.account-wrap strong,.chat-header strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.account-wrap span,.chat-header span{font-size:12px;color:#8696a0}.top-actions{display:flex}.icon-button,.back{border:0;background:transparent;color:#aebac1;font-size:24px;cursor:pointer;padding:8px}.instances{display:flex;gap:8px;padding:10px 12px;overflow-x:auto;background:#111b21;border-bottom:1px solid #202c33}.instance{flex:none;display:flex;align-items:center;gap:7px;padding:7px 10px;border:1px solid #283942;border-radius:999px;background:#182229;color:#cfd7db;cursor:pointer;font-size:12px}.instance.active{border-color:#00a884;background:#0b3b34;color:#eafff9}.dot{width:7px;height:7px;border-radius:50%;background:#8696a0}.dot.open{background:#25d366;box-shadow:0 0 8px #25d366}.search{margin:9px 12px;display:flex;align-items:center;gap:12px;padding:0 14px;background:#202c33;border-radius:9px;color:#8696a0}.search input{width:100%;height:38px;border:0;outline:0;background:transparent;color:#e9edef}.tabs{display:grid;grid-template-columns:1fr 1fr;padding:0 12px;border-bottom:1px solid #202c33}.tabs button{padding:10px;border:0;border-bottom:2px solid transparent;background:transparent;color:#8696a0;cursor:pointer}.tabs button.active{color:#00a884;border-color:#00a884}.chat-list{flex:1;overflow:auto}.chat-item{width:100%;display:flex;gap:12px;padding:11px 14px;border:0;border-bottom:1px solid #202c33;background:transparent;color:#e9edef;text-align:left;cursor:pointer}.chat-item:hover,.chat-item.active{background:#202c33}.chat-item .avatar{width:48px;height:48px}.chat-copy{min-width:0;flex:1}.chat-line{display:flex;align-items:center;justify-content:space-between;gap:8px}.chat-line strong,.preview{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.time{flex:none;font-size:11px;color:#8696a0}.preview{margin-top:4px;font-size:13px;color:#8696a0}.badge{flex:none;min-width:20px;padding:2px 6px;border-radius:12px;background:#25d366;color:#053b2f;text-align:center;font-size:11px;font-weight:800}.loading,.nothing{padding:32px;text-align:center;color:#8696a0}.conversation{min-width:0;position:relative;background:#0b141a;background-image:linear-gradient(#0b141aee,#0b141aee),radial-gradient(#ffffff12 1px,transparent 1px);background-size:auto,18px 18px}.empty-state{height:100%;display:grid;place-content:center;text-align:center;color:#8696a0}.empty-state h2{margin:0;color:#e9edef;font-weight:400;font-size:30px}.empty-state p{margin:12px 0 40px}.empty-state span{font-size:12px}.chat-view{height:100%;display:flex;flex-direction:column}.chat-header{justify-content:flex-start}.back{display:none}.messages{flex:1;overflow:auto;padding:24px clamp(18px,7vw,100px);display:flex;flex-direction:column;gap:5px}.message{align-self:flex-start;max-width:min(72%,650px);padding:7px 9px 5px;border-radius:8px;background:#202c33;box-shadow:0 1px 1px #0004;white-space:pre-wrap;overflow-wrap:anywhere}.message.mine{align-self:flex-end;background:#005c4b}.message .meta{display:flex;justify-content:flex-end;gap:5px;margin:3px 0 0 14px;color:#91a3ad;font-size:10px}.message img,.message video{display:block;max-width:100%;max-height:400px;border-radius:6px;margin-bottom:5px}.media-placeholder{padding:10px;color:#aebac1;font-style:italic}.day{align-self:center;margin:12px;padding:6px 11px;border-radius:7px;background:#182229;color:#aebac1;font-size:11px}.composer{min-height:64px;padding:9px 14px;display:flex;align-items:flex-end;gap:10px;background:#202c33}.composer textarea{flex:1;max-height:120px;resize:none;border:0;outline:0;border-radius:9px;padding:12px 14px;background:#2a3942;color:#e9edef}.composer button,.attach{width:42px;height:42px;display:grid;place-items:center;border:0;border-radius:50%;background:transparent;color:#aebac1;font-size:25px;cursor:pointer}.composer button{background:#00a884;color:#fff;font-size:18px}.attach input{display:none}.file-preview{position:absolute;right:16px;bottom:72px;max-width:70%;padding:10px 14px;border-radius:10px;background:#2a3942;box-shadow:0 8px 30px #0008}.file-preview button{margin-left:10px;border:0;background:transparent;color:#fff;cursor:pointer}.toast{position:fixed;left:50%;bottom:24px;z-index:20;transform:translate(-50%,120px);padding:11px 18px;border-radius:8px;background:#e9edef;color:#111b21;box-shadow:0 8px 30px #0008;transition:.25s}.toast.show{transform:translate(-50%,0)}
@media(max-width:760px){.app{grid-template-columns:1fr}.conversation{display:none;position:fixed;inset:0;z-index:5}.app.chat-open .conversation{display:block}.app.chat-open .sidebar{display:none}.back{display:block}.messages{padding:18px 12px}.message{max-width:86%}.login-card{padding:32px 24px}}

/* Mantém a rolagem dentro das listas, nunca na página inteira. */
html,body{width:100%;height:100%;overflow:hidden}
body{min-height:0}
.login{height:100dvh;min-height:0;overflow:auto}
.app{height:100dvh;max-height:100dvh;min-height:0;overflow:hidden}
.sidebar,.conversation,.chat-view{height:100%;min-height:0;overflow:hidden}
.sidebar{min-width:0}
.chat-list,.messages{min-height:0;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}
.conversation{contain:layout paint}
.chat-header,.composer{flex:none}
.message{min-width:0;max-width:min(72%,650px);overflow:hidden;overflow-wrap:anywhere;word-break:break-word}
.message,.day,.messages>.loading,.messages>.nothing{flex:none;flex-shrink:0}
.message>span{display:block;max-width:100%;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}
.messages{gap:8px}
.message .sender{display:block;margin-bottom:3px;color:#53bdeb;font-size:12px;line-height:1.2}
.message.mine .sender{display:none}
.date-separator{position:sticky;top:8px;z-index:2;text-transform:capitalize;box-shadow:0 2px 8px #0004;pointer-events:none}
.message img,.message video{width:auto;height:auto;max-width:100%;object-fit:contain}
.composer{position:relative;width:100%;max-width:100%;overflow:hidden}
.composer textarea{min-width:0;overflow-y:auto;overflow-wrap:anywhere;word-break:break-word}

@media(max-width:760px){
  .app{height:100dvh;max-height:100dvh}
  .conversation{height:100dvh;max-height:100dvh}
  .message{max-width:86%}
  .composer{padding-bottom:max(9px,env(safe-area-inset-bottom))}
}