:root{--bg:#111;--panel:#171717;--raised:#242424;--hover:#2e2e2e;--text:#ececec;--muted:#a8a8a8;--line:#333;--accent:#10a37f;--danger:#ff5c5c;--sidebar:306px;--content:920px;color-scheme:dark;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}[hidden]{display:none!important}html,body{height:100%;margin:0;background:var(--bg);color:var(--text)}button,input,textarea,select{font:inherit;color:inherit}button{border:0;background:none;cursor:pointer}.shell{height:100%;display:grid;grid-template-columns:var(--sidebar) 1fr;overflow:hidden}.sidebar{position:relative;background:#0c0c0c;border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0}.sidebar-head,.topbar{height:64px;display:flex;align-items:center;justify-content:space-between;padding:10px 14px}.brand{display:flex;align-items:center;gap:10px;font-size:18px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#3776f6);color:white;font-weight:800}.brand-mark.small{width:30px;height:30px}.brand-mark.hero{width:56px;height:56px;margin:auto}.head-actions{display:flex}.head-actions button,.top-actions button,.mobile-menu{padding:9px;border-radius:10px}.head-actions button:hover,.top-actions button:hover,.mobile-menu:hover{background:var(--hover)}.primary-nav{padding:8px}.primary-nav button,.profile-menu button,.chat-menu button{width:100%;padding:11px 12px;border-radius:9px;text-align:left;display:flex;gap:12px;align-items:center}.primary-nav button:hover,.profile-menu button:hover,.chat-menu button:hover{background:var(--hover)}.side-section{padding:12px 12px 4px}.side-section h3,.conversation-group h3{margin:10px 8px 6px;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.08em}.project-pill{font-size:13px;color:var(--muted);padding:6px 8px}.conversation-list{min-height:0;overflow-y:auto;padding:0 8px 90px}.conversation{display:flex;align-items:center;border-radius:9px;padding:9px 10px;gap:8px}.conversation:hover,.conversation.active{background:var(--raised)}.conversation button:first-child{flex:1;text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conversation .more{opacity:0}.conversation:hover .more{opacity:1}.profile-button{position:absolute;bottom:0;left:0;width:100%;min-height:70px;padding:12px;display:flex;align-items:center;gap:10px;background:#0c0c0c;border-top:1px solid var(--line);text-align:left}.profile-button:hover{background:var(--raised)}.profile-button>span:nth-child(2){display:flex;flex-direction:column;min-width:0}.profile-button small{color:var(--muted)}.profile-button .chevron{margin-left:auto}.avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:#597d2b;font-weight:700}.main{min-width:0;position:relative;display:grid;grid-template-rows:64px minmax(0,1fr) auto}.topbar{border-bottom:1px solid transparent}.topbar h1{font-size:16px;margin:0}.topbar small{color:var(--muted)}.top-actions{display:flex;gap:4px}.mobile-menu{display:none}.workspace{overflow-y:auto;position:relative}.messages{max-width:var(--content);margin:auto;padding:28px 28px 160px}.welcome{text-align:center;margin:18vh auto 0;padding:20px}.welcome h2{font-size:30px;margin:20px 0 8px}.welcome p{color:var(--muted)}.message{display:grid;grid-template-columns:34px minmax(0,1fr);gap:15px;margin:0 0 32px}.message.user{grid-template-columns:minmax(0,1fr);justify-items:end}.message.user .bubble{max-width:78%;background:var(--raised);border-radius:22px;padding:12px 18px}.message .who{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:var(--accent);font-size:12px;font-weight:800}.message-body{min-width:0;line-height:1.62;font-size:16px}.message-body p{margin:0 0 14px}.message-body pre{overflow:auto;background:#090909;border:1px solid var(--line);padding:15px;border-radius:12px}.message-body code{font-family:"SFMono-Regular",Consolas,monospace}.message-body img,.message-body video{display:block;max-width:min(100%,760px);max-height:650px;border-radius:16px;margin:12px 0}.message-actions{display:flex;gap:4px;margin-top:8px}.message-actions button{color:var(--muted);padding:6px;border-radius:8px}.message-actions button:hover{color:var(--text);background:var(--raised)}.attachment-thumb{max-width:280px;max-height:220px;border-radius:14px}.thinking{color:var(--muted);display:flex;gap:6px}.thinking i{width:6px;height:6px;border-radius:50%;background:var(--muted);animation:pulse 1s infinite alternate}.thinking i:nth-child(2){animation-delay:.2s}.thinking i:nth-child(3){animation-delay:.4s}@keyframes pulse{to{opacity:.25;transform:translateY(-3px)}}.composer-wrap{position:absolute;bottom:0;left:0;right:0;padding:0 24px 10px;background:linear-gradient(transparent,var(--bg) 28%)}.composer{max-width:var(--content);margin:30px auto 0;background:var(--raised);border:1px solid #424242;border-radius:26px;display:flex;align-items:flex-end;gap:6px;padding:10px}.composer:focus-within{border-color:#5e5e5e}.composer button{width:38px;height:38px;border-radius:50%;font-size:20px;flex:none}.composer button:hover{background:#383838}.composer textarea{flex:1;resize:none;max-height:180px;min-height:38px;padding:8px 6px;border:0;outline:0;background:transparent;line-height:1.4}.composer select{align-self:center;border:0;background:transparent;color:var(--muted);font-size:13px;max-width:90px}.composer .send{background:white;color:#111;font-weight:800}.composer .send:disabled{opacity:.25}.disclaimer{display:block;text-align:center;color:#777;margin-top:7px}.attachment-preview{max-width:var(--content);margin:0 auto -22px;padding:8px 16px;background:var(--raised);border-radius:16px 16px 0 0}.attachment-preview img{width:70px;height:70px;object-fit:cover;border-radius:10px}.job-progress{max-width:var(--content);margin:7px auto;display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;font-size:12px;color:var(--muted)}progress{width:100%;height:5px;accent-color:var(--accent)}.jump-bottom{position:absolute;bottom:145px;left:50%;width:36px;height:36px;border-radius:50%;background:var(--raised);border:1px solid var(--line)}.popover{position:absolute;z-index:20;background:#303030;border:1px solid #444;border-radius:16px;padding:8px;box-shadow:0 18px 45px #0008}.profile-menu{left:12px;bottom:72px;width:275px}.chat-menu{right:14px;top:54px;width:220px}.popover hr{border:0;border-top:1px solid #4a4a4a}.danger{color:var(--danger)!important}.modal{border:1px solid #444;border-radius:24px;background:#242424;color:var(--text);box-shadow:0 30px 90px #000b}.modal::backdrop{background:#000a;backdrop-filter:blur(3px)}.modal-close{position:absolute;right:18px;top:14px;font-size:30px;border-radius:10px}.settings-modal{width:min(96vw,1040px);height:min(88vh,760px);padding:0;grid-template-columns:310px 1fr}.settings-modal[open]{display:grid}.settings-modal aside{padding:28px 20px;border-right:1px solid #444}.settings-modal aside h2{margin:0 0 26px}.settings-modal aside button{display:block;width:100%;padding:13px;text-align:left;border-radius:10px;margin:2px}.settings-modal aside button.active{background:#383838}.settings-modal section{padding:28px 34px;overflow:auto}.setting-row{min-height:96px;border-top:1px solid #3c3c3c;display:flex;align-items:center;justify-content:space-between;gap:20px}.setting-row span{display:flex;flex-direction:column}.setting-row small{color:var(--muted);margin-top:7px}.setting-row select,.setting-row input:not([type=color]){background:#333;border:1px solid #555;padding:9px;border-radius:8px}.compact-modal{width:min(92vw,600px);padding:28px}.compact-modal form{display:grid;grid-template-columns:1fr auto auto;gap:8px}.compact-modal input,.compact-modal select,.panel-modal input,.panel-modal select{background:#191919;border:1px solid #555;border-radius:9px;padding:11px}.panel-modal{width:min(95vw,1100px);height:min(88vh,780px);padding:28px;overflow:auto}.panel-grid{display:grid;gap:12px}.card{border:1px solid #444;background:#1b1b1b;border-radius:14px;padding:16px}.card-row{display:flex;justify-content:space-between;align-items:center;gap:14px}.card small{color:var(--muted)}.card-actions{display:flex;gap:8px;flex-wrap:wrap}.primary{background:var(--accent);color:white!important;border-radius:10px;padding:11px 16px}.full{width:100%}.login-screen{height:100%;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 50% 25%,#1e3b35,#111 45%)}.login-card{width:min(92vw,410px);background:#1b1b1b;border:1px solid #3b3b3b;border-radius:24px;padding:34px}.login-card .brand-mark{margin:auto}.login-card h1{text-align:center}.login-card p{text-align:center;color:var(--muted)}.login-card label{display:grid;gap:7px;margin:16px 0}.login-card input{border:1px solid #555;background:#111;border-radius:10px;padding:13px}.error{color:#ff8585;min-height:22px;margin-top:12px}.toast{position:fixed;z-index:99;left:50%;bottom:24px;transform:translateX(-50%);padding:11px 16px;background:#eee;color:#111;border-radius:12px}.empty{text-align:center;color:var(--muted);padding:50px}.admin-table{width:100%;border-collapse:collapse}.admin-table th,.admin-table td{text-align:left;padding:10px;border-bottom:1px solid #3b3b3b}.admin-table select{background:#222;border:1px solid #555;border-radius:6px;padding:5px}
body.light{--bg:#fff;--panel:#fff;--raised:#f1f1f1;--hover:#e6e6e6;--text:#161616;--muted:#666;--line:#ddd}.light .sidebar,.light .profile-button{background:#f7f7f7}.high-contrast{--line:#777}.sidebar-collapsed{--sidebar:72px}.sidebar-collapsed .brand b,.sidebar-collapsed .primary-nav button:not([data-action="new-chat"]),.sidebar-collapsed .conversation-list,.sidebar-collapsed .side-section,.sidebar-collapsed .profile-button span:not(.avatar){display:none}.sidebar-collapsed .primary-nav button[data-action="new-chat"]{font-size:0}.sidebar-collapsed .primary-nav button[data-action="new-chat"] span{font-size:18px}.sidebar-collapsed .head-actions{display:none}
@media(max-width:760px){.shell{grid-template-columns:1fr}.sidebar{position:fixed;z-index:40;inset:0 17% 0 0;transform:translateX(-110%);transition:.2s;box-shadow:20px 0 60px #0009}.sidebar.open{transform:none}.mobile-menu{display:block}.messages{padding:20px 16px 150px}.composer-wrap{padding:0 10px 8px}.topbar{padding:8px}.top-actions span{display:none}.settings-modal[open]{display:block;height:95vh}.settings-modal aside{display:none}.settings-modal section{padding:50px 20px}.compact-modal form{grid-template-columns:1fr}.message.user .bubble{max-width:90%}}

/* Keep the composer in its own grid row. Only the message history scrolls. */
.shell{height:100dvh}
.sidebar{min-height:0}
.main{min-height:0;height:100%;overflow:hidden}
.workspace{min-height:0;overflow-y:auto;overscroll-behavior:contain}
.messages{padding-bottom:48px}
.message-body img,.message-body video{max-height:min(650px,calc(100dvh - 260px))}
.composer-wrap{position:relative;z-index:10;bottom:auto;left:auto;right:auto}
.jump-bottom{bottom:20px}
@media(max-width:760px){.messages{padding-bottom:34px}.composer-wrap{padding-bottom:max(8px,env(safe-area-inset-bottom))}}