:root{--bg:#f5f7fb;--card:#fff;--line:#dfe5ee;--text:#182235;--muted:#68758a;--primary:#315efb;--green:#138a55;--red:#c93636;--amber:#b57400;--soft:#eef3ff;--private:#fff5dc}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}button,input,select,textarea{font:inherit}.shell{max-width:1180px;margin:auto;padding:24px}.topbar{padding:8px 2px 22px}.brand{font-size:28px;font-weight:800}.subtitle,.muted{color:var(--muted)}.main-grid{display:grid;grid-template-columns:390px 1fr;gap:20px;align-items:start}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px}.section-title{font-size:18px;font-weight:800;margin-bottom:14px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.span-2{grid-column:1/-1}label{display:block;font-weight:700;font-size:14px}input,select,textarea{width:100%;border:1px solid #cfd7e3;border-radius:10px;padding:12px 13px;margin-top:6px;background:#fff;color:var(--text)}input:focus,select:focus,textarea:focus{outline:2px solid #a8bbff;border-color:var(--primary)}.btn{border:1px solid var(--line);background:#fff;color:var(--text);border-radius:10px;padding:10px 14px;font-weight:800;cursor:pointer}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-success{background:var(--green);color:#fff;border-color:var(--green)}.btn-danger{background:var(--red);color:#fff;border-color:var(--red)}.btn-warning{background:#fff3cf;color:#7a4a00;border-color:#e7c768}.form-actions{text-align:right}.rooms-head,.chat-header,.room-actions,.room-title-wrap,.panel-head,.conversation-head,.composer-row,.message-meta{display:flex;align-items:center;gap:12px}.rooms-head,.chat-header,.panel-head,.conversation-head,.message-meta{justify-content:space-between}.rooms-list{display:grid;gap:12px}.room-card{display:flex;justify-content:space-between;gap:15px;border:1px solid var(--line);border-radius:14px;padding:16px}.room-card.closed{background:#f7f7f8}.room-card-title{font-size:17px;font-weight:800}.owner-badge{display:inline-block;font-size:12px;background:#fff4c2;border:1px solid #ecd271;padding:4px 7px;border-radius:999px;margin-left:5px}.room-meta,.room-desc{font-size:13px;color:var(--muted);margin-top:5px}.room-card-side{display:flex;flex-direction:column;align-items:flex-end;gap:10px;min-width:105px}.status{font-weight:800;font-size:13px}.status-open{color:var(--green)}.status-closed{color:var(--red)}.empty-state,.loading{padding:30px;text-align:center;color:var(--muted)}.notice{margin-top:10px;padding:10px;border-radius:9px;font-size:14px}.notice.error{background:#fff0f0;color:#9b2626}.notice.ok{background:#eaf8f0;color:#14653f}.hidden{display:none!important}.modal{position:fixed;inset:0;background:#0008;display:flex;align-items:center;justify-content:center;padding:20px}.modal-card{width:min(500px,100%);background:white;border-radius:16px;padding:20px}.modal-title{font-size:20px;font-weight:800;margin-bottom:14px}.modal-card label{margin-bottom:13px}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:16px}.chat-shell{max-width:1400px;margin:auto;padding:16px}.chat-header{background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px 16px;margin-bottom:14px}.back-link{text-decoration:none;color:var(--primary);font-weight:800}.room-title{font-size:20px;font-weight:800}.room-location{font-size:13px;color:var(--muted);margin-top:3px}.room-actions{flex-wrap:wrap;justify-content:flex-end}.chat-layout{display:grid;grid-template-columns:260px 1fr;gap:14px}.participants-panel,.conversation-panel{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}.participants-panel{padding:12px;align-self:start}.panel-head{padding:6px 5px 12px}.count-badge{background:var(--soft);border-radius:999px;padding:4px 8px;font-size:12px}.participant{width:100%;border:0;background:transparent;border-radius:10px;padding:10px;display:flex;gap:10px;text-align:left;cursor:pointer;color:var(--text)}.participant:hover,.participant.active{background:var(--soft)}.participant small{display:block;color:var(--muted);margin-top:2px}.avatar{width:25px}.conversation-panel{display:grid;grid-template-rows:auto minmax(420px,65vh) auto}.conversation-head{padding:14px 16px;border-bottom:1px solid var(--line)}.conversation-title{font-weight:800;font-size:18px}.privacy{font-size:11px;font-weight:900;padding:6px 9px;border-radius:999px}.privacy.public{background:#eaf8f0;color:#14653f}.privacy.private{background:#fff0c9;color:#7b5100}.messages{padding:16px;overflow-y:auto;background:#fafbfe}.message{max-width:76%;margin-bottom:11px;border:1px solid var(--line);border-radius:14px;padding:11px 13px;background:#fff}.message.mine{margin-left:auto;border-color:#b9c7ff;background:#f5f7ff}.message.private-msg{background:var(--private);border-color:#ebd69c}.message-meta{font-size:11px;color:var(--muted);margin-bottom:6px}.message-text{white-space:pre-wrap;word-break:break-word;line-height:1.4}.composer{padding:12px;border-top:1px solid var(--line)}.send-target{font-size:13px;font-weight:800;margin-bottom:7px}.composer-row textarea{margin:0;resize:vertical;min-height:50px}.send-btn{align-self:stretch;min-width:100px}@media(max-width:850px){.main-grid,.chat-layout{grid-template-columns:1fr}.shell{padding:14px}.chat-header{align-items:flex-start;flex-direction:column}.room-actions{justify-content:flex-start}.participants-panel{order:2}.conversation-panel{order:1}.conversation-panel{grid-template-rows:auto minmax(360px,58vh) auto}}@media(max-width:560px){.form-grid{grid-template-columns:1fr}.span-2{grid-column:auto}.room-card{flex-direction:column}.room-card-side{align-items:flex-start}.composer-row{flex-direction:column}.send-btn{width:100%;min-height:44px}.message{max-width:90%}.brand{font-size:23px}}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:14px}.unread-global,.private-alert{background:#fff0c9;color:#7b5100;border:1px solid #e4c66f;border-radius:999px;padding:8px 11px;font-size:13px;font-weight:900}.participant-row{display:grid;grid-template-columns:minmax(0,1fr) 38px;align-items:center}.participant-row .participant{min-width:0}.participant-menu{position:relative}.participant-menu summary{list-style:none;cursor:pointer;text-align:center;font-size:24px;line-height:38px;border-radius:9px}.participant-menu summary::-webkit-details-marker{display:none}.participant-menu summary:hover{background:var(--soft)}.menu-pop{position:absolute;right:0;top:38px;z-index:10;min-width:130px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:5px;box-shadow:0 10px 30px #1a263522}.menu-pop button{display:block;width:100%;border:0;background:#fff;text-align:left;padding:9px;border-radius:7px;cursor:pointer}.menu-pop button:hover{background:var(--soft)}.unread-dot{display:inline-block;min-width:20px;padding:2px 6px;border-radius:999px;background:#c93636;color:#fff;font-size:11px;text-align:center}.participant-help{border-top:1px solid var(--line);margin-top:10px;padding:10px 6px 2px;color:var(--muted);font-size:11px;line-height:1.4}@media(max-width:560px){.topbar{align-items:flex-start;flex-direction:column}.unread-global{align-self:flex-start}}

/* V1.5 - temas, anexos e melhor enquadramento */
:root{--input:#fff;--panel-bg:#fafbfe;--private:#fff5dc;--shadow:#1a263522}
:root[data-theme="dark"]{--bg:#111722;--card:#1b2431;--line:#344052;--text:#edf2f8;--muted:#aeb9c9;--primary:#6f8cff;--green:#46c98a;--red:#ff7171;--amber:#ffc45c;--soft:#273347;--private:#3b3423;--input:#222c3a;--panel-bg:#151d28;--shadow:#0008}
body,input,select,textarea,.btn,.modal-card,.participants-panel,.conversation-panel,.chat-header,.card,.room-card,.message,.menu-pop,.menu-pop button{transition:background-color .15s,color .15s,border-color .15s}
input,select,textarea{background:var(--input);color:var(--text);border-color:var(--line)}
.btn{background:var(--card);color:var(--text);border-color:var(--line)}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.card,.chat-header,.participants-panel,.conversation-panel,.modal-card,.room-card,.message,.menu-pop,.menu-pop button{background:var(--card);color:var(--text);border-color:var(--line)}
.messages{background:var(--panel-bg)}
.message.mine{background:var(--soft);border-color:var(--primary)}
.message.private-msg{background:var(--private);border:2px solid #d19a23;box-shadow:inset 4px 0 0 #d19a23}
.message.private-msg .message-meta b{font-weight:900}
.room-card.closed{background:var(--soft)}
.menu-pop{box-shadow:0 10px 30px var(--shadow)}
.theme-panel{position:absolute;right:14px;top:64px;z-index:60;width:min(310px,calc(100% - 28px));background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:0 12px 30px var(--shadow)}
.chat-header,.topbar{position:relative}.theme-panel label{margin-bottom:10px}.theme-colors{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px}.theme-colors label{font-size:12px}.theme-colors input[type=color]{height:42px;padding:3px;cursor:pointer}.top-actions{display:flex;align-items:center;gap:8px}.btn-compact{padding:8px 10px;min-height:38px}.active-control{border-color:var(--primary);background:var(--soft)}
.recent-badge{display:inline-block;font-size:11px;background:var(--soft);border:1px solid var(--line);padding:3px 6px;border-radius:999px;margin-left:4px;color:var(--muted)}
.chat-shell{max-width:none;width:100%;padding:10px 12px}.chat-header{margin-bottom:10px;padding:10px 12px}.chat-layout{grid-template-columns:235px minmax(0,1fr);gap:10px}.conversation-panel{grid-template-rows:auto minmax(0,1fr) auto;height:calc(100vh - 94px);min-height:540px}.participants-panel{height:calc(100vh - 94px);overflow-y:auto}.messages{min-height:0}.room-title-wrap{min-width:0}.room-main-title{min-width:0}.room-title,.room-location{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.room-actions{gap:7px}.conversation-head{padding:10px 14px}.conversation-head-text{min-width:0}.typing-indicator{font-size:12px;color:var(--primary);font-weight:700;margin-top:3px}.composer{padding:9px 10px}.composer-top{display:flex;justify-content:space-between;gap:8px;align-items:center}.composer-row{gap:8px}.composer-row textarea{min-height:48px;max-height:130px}.composer-tools{display:flex;gap:6px;align-items:stretch}.tool-btn{display:flex;align-items:center;justify-content:center;width:46px;min-height:48px;border:1px solid var(--line);border-radius:10px;background:var(--card);cursor:pointer;font-size:20px}.tool-btn:hover{background:var(--soft)}.send-btn{min-width:90px}.composer-help{font-size:11px;color:var(--muted);margin-top:5px}.file-preview{display:flex;align-items:center;gap:7px;max-width:60%;background:var(--soft);border:1px solid var(--line);padding:5px 8px;border-radius:9px;font-size:12px;min-width:0}.file-preview span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-preview button{border:0;background:transparent;color:var(--text);font-size:18px;cursor:pointer}.image-attachment{display:block;margin-top:8px}.image-attachment img{display:block;max-width:min(440px,100%);max-height:360px;border-radius:10px;border:1px solid var(--line);object-fit:contain;background:#0001}.attachment-name{font-size:11px;color:var(--muted);margin-top:4px}.file-attachment{display:flex;align-items:center;gap:8px;margin-top:8px;padding:10px;border:1px solid var(--line);border-radius:10px;background:var(--soft);color:var(--text);text-decoration:none}.file-attachment span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-attachment small{margin-left:auto;color:var(--muted);white-space:nowrap}
@media(max-width:850px){body.chat-page{overflow:auto}.chat-shell{padding:8px}.chat-layout{grid-template-columns:1fr}.conversation-panel{height:auto;min-height:0;grid-template-rows:auto minmax(360px,58vh) auto}.participants-panel{height:auto;max-height:310px;order:2}.conversation-panel{order:1}.chat-header{gap:8px}.room-location{white-space:normal}.theme-panel{top:105px}}
@media(max-width:560px){.shell{padding:10px}.chat-shell{padding:5px}.chat-header{border-radius:11px;padding:8px}.room-title{font-size:17px}.room-location{font-size:11px}.room-actions{width:100%;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:5px}.room-actions .btn,.room-actions .status{font-size:11px;padding:7px 5px;text-align:center}.private-alert{grid-column:1/-1}.conversation-head{padding:8px 10px}.conversation-title{font-size:16px}.conversation-panel{border-radius:11px;grid-template-rows:auto minmax(330px,56vh) auto}.messages{padding:10px}.message{max-width:94%;padding:9px 10px}.composer-row{align-items:stretch}.composer-tools{display:grid;grid-template-columns:46px 46px 1fr}.send-btn{width:auto;min-width:0}.file-preview{max-width:100%;margin-bottom:5px}.composer-top{display:block}.composer-help{line-height:1.3}.theme-colors{grid-template-columns:1fr}.theme-panel{top:145px}.top-actions{width:100%;justify-content:space-between}.topbar{gap:8px}}