:root{--bg:#f7f7f8;--panel:#ffffff;--panel-soft:#f3f4f6;--text:#111827;--muted:#6b7280;--border:#e5e7eb;--border-strong:#d1d5db;--user-bubble:#e5e7eb;--assistant-bubble:transparent;--link:#2563eb;--shadow:0 10px 20px rgba(0,0,0,0.06)}:root[data-theme=dark]{--bg:#0b1020;--panel:#111827;--panel-soft:#0f172a;--text:#e5e7eb;--muted:#94a3b8;--border:#1f2937;--border-strong:#334155;--user-bubble:#1d4ed8;--assistant-bubble:transparent;--link:#93c5fd;--shadow:0 10px 24px rgba(0,0,0,0.35)}body,html{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}*{box-sizing:border-box}a{color:var(--link);text-decoration:none}button{cursor:pointer}.container{max-width:100%;margin:0 auto;padding:0}.stack{flex-direction:column;gap:16px}.row,.stack{display:flex}.row{gap:12px;align-items:center}.small{color:var(--muted);font-size:.88rem}.top-nav{position:-webkit-sticky;position:sticky;top:0;z-index:30;padding:10px 16px;background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}.theme-toggle{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:8px 12px}.theme-toggle.icon-only{border:none;background:transparent;padding:6px 8px;font-size:1rem;color:var(--text)}.theme-toggle.icon-only:hover{background:color-mix(in srgb,var(--text) 8%,transparent)}input,select,textarea{width:100%;padding:10px 12px}button,input,select,textarea{border-radius:12px;border:1px solid var(--border-strong);background:var(--panel);color:var(--text)}button{padding:10px 14px}.card{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:20px}.auth-shell{min-height:90vh;display:grid;place-items:center}.auth-card{width:100%;max-width:460px;background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:24px;display:flex;flex-direction:column;gap:14px}.social-btn{display:inline-flex;align-items:center;justify-content:center}.sidebar-action{border:none;background:transparent;justify-content:flex-start;padding:8px 10px}.chat-layout{display:grid;grid-template-columns:300px 1fr;min-height:100vh;position:relative}.chat-sidebar{border-right:1px solid var(--border);background:var(--panel-soft);padding:16px;display:flex;flex-direction:column;gap:10px;position:-webkit-sticky;position:sticky;top:0;height:100vh;overflow:hidden;justify-content:space-between;transition:width .22s ease,padding .22s ease,background-color .18s ease}.shared-chat-layout .chat-sidebar.shared-chat-sidebar{background:var(--bg);border-right:1px solid var(--border)}.chat-sidebar.collapsed{width:84px;padding:12px 10px}.chat-sidebar.collapsed .sidebar-action{justify-content:center}.chat-brand{display:inline-flex;align-items:center;justify-content:flex-start;margin:4px 0 8px}.brand-logo{height:72px;width:auto;object-fit:contain}.brand-logo-dark,:root[data-theme=dark] .brand-logo-light{display:none}:root[data-theme=dark] .brand-logo-dark{display:inline-block}.chat-sidebar.collapsed .brand-logo{height:32px}.sidebar-top{position:-webkit-sticky;position:sticky;top:0;background:var(--panel-soft);z-index:2;padding-bottom:8px;border-bottom:1px solid var(--border)}.sidebar-list{overflow-y:auto;flex:1 1;min-height:120px;padding-top:10px}.sidebar-account{border-top:1px solid var(--border);padding-top:10px;display:flex;gap:10px;align-items:center;position:relative;cursor:pointer}.avatar-circle{width:28px;height:28px;border-radius:999px;display:grid;place-items:center;background:#60a5fa;color:#fff;font-weight:700}.account-popover{animation:pop-in .14s ease-out;position:absolute;left:0;bottom:42px;background:var(--panel);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);min-width:220px;padding:10px;display:flex;flex-direction:column;gap:6px;z-index:40}.account-popover a,.account-popover button{border:none;background:transparent;text-align:left;padding:8px 6px;color:var(--text)}.account-popover a:hover,.account-popover button:hover{background:color-mix(in srgb,var(--text) 7%,transparent);border-radius:8px}.session-item{width:100%;text-align:left;background:transparent;border:none;border-radius:12px;padding:10px 12px;color:var(--text)}.session-item.active{background:color-mix(in srgb,var(--text) 8%,transparent)}.session-title span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.session-row{position:relative;display:grid;grid-template-columns:1fr auto;align-items:center;border-radius:12px}.session-row:hover{background:color-mix(in srgb,var(--text) 5%,transparent)}.session-menu{border:none;background:transparent;padding:4px 8px;color:var(--muted)}.session-popover{animation:pop-in .14s ease-out;position:absolute;right:0;top:36px;z-index:30;background:var(--panel);border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow);display:flex;flex-direction:column;min-width:130px}.session-popover button{border:none;background:transparent;text-align:left;padding:8px 10px}.session-popover button:hover{background:color-mix(in srgb,var(--text) 8%,transparent)}.chat-main{display:grid;grid-template-rows:1fr auto;max-width:none;width:100%;margin:0;padding:0 24px 20px;grid-gap:12px;gap:12px;height:100vh}.chat-main-empty{grid-template-rows:1fr auto}.mobile-chat-topbar,.mobile-sidebar-backdrop{display:none}.chat-main-with-toolbar{position:relative}.chat-floating-top{position:absolute;top:10px;left:24px;right:24px;z-index:3;display:flex;align-items:center;justify-content:space-between;pointer-events:none}.chat-main-with-toolbar .messages-wrap{padding-top:54px}.model-selector{border:none;background:transparent;color:var(--text);font-weight:600;font-size:1.05rem;padding:4px 2px;gap:6px}.chat-top-actions,.model-selector{pointer-events:auto;display:inline-flex;align-items:center}.chat-top-actions{gap:8px}.top-action-btn{border:none;background:transparent;color:var(--text);font-weight:600;padding:6px 8px;border-radius:10px}.top-action-btn:hover:not(:disabled){background:color-mix(in srgb,var(--text) 8%,transparent)}.messages-wrap{overflow-y:auto;display:flex;flex-direction:column;gap:18px;padding:10px 0 20px;max-width:900px;width:100%;margin:0 auto}.chat-main-empty .messages-wrap{justify-content:center;overflow-y:hidden}.empty-state{margin:auto;color:var(--muted);min-height:1px}.message-row{display:flex}.message-row.user{justify-content:flex-end}.message-row.assistant{justify-content:flex-start}.message-bubble{max-width:min(840px,92%);padding:12px 14px;border-radius:14px;border:1px solid var(--border);background:var(--panel)}.message-row.user .message-bubble{background:var(--user-bubble);border-color:var(--border-strong)}.message-row.assistant .message-bubble{border:none;background:var(--assistant-bubble);padding-left:0}.citations-card{margin-top:10px;border-top:1px solid var(--border);padding-top:8px}.citation-item{border:1px solid var(--border);border-radius:10px;padding:10px;margin-top:8px;background:var(--panel)}.composer{position:-webkit-sticky;position:sticky;bottom:12px;display:grid;grid-template-columns:1fr auto;grid-template-rows:auto auto;grid-gap:10px;gap:10px;align-items:end;background:var(--panel);border:1px solid var(--border-strong);border-radius:26px;padding:10px 12px 8px;box-shadow:var(--shadow);max-width:900px;width:100%;margin:0 auto}.composer textarea{grid-column:1/-1;border-radius:14px;padding:8px 8px 6px;border-color:transparent;background:transparent;font-size:1.05rem;line-height:1.45;min-height:52px;resize:none}.composer textarea::placeholder{color:color-mix(in srgb,var(--text) 55%,transparent);font-weight:500}.composer-meta{display:flex;align-items:center;gap:10px;padding-left:6px}.attachment-disabled{font-size:1.5rem;line-height:1;color:var(--muted);padding:0 2px}.attachment-disabled,.mode-pill{border:none;background:transparent}.mode-pill{color:#0b6bda;padding:6px 8px;border-radius:10px;display:inline-flex;align-items:center;gap:6px}.mode-pill .small{color:#0b6bda;font-size:1.1rem}.composer-actions{display:inline-flex;align-items:center;justify-content:flex-end;gap:8px}.mic-btn{border:none;background:transparent;font-size:1.25rem;color:var(--text);padding:6px 8px}.send-btn{border-radius:999px;width:36px;height:36px;padding:0;border:none;background:#0a0a0a;color:#fff;font-size:1rem}.send-btn:disabled{opacity:.55}.composer-empty{position:static;width:min(780px,100%);margin:0 auto 18vh}.composer-empty textarea{min-height:58px;font-size:1.1rem;font-weight:500;letter-spacing:0;padding-top:8px}.typing{display:inline-flex;gap:5px}.typing span{width:8px;height:8px;border-radius:9999px;background:var(--muted);animation:blink 1.2s ease-in-out infinite}.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){animation-delay:.4s}.typing:after{content:" Генерирам одговор…";margin-left:8px;color:var(--muted);font-size:.9rem}@keyframes blink{0%,80%,to{opacity:.2;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}@media (max-width:960px){.chat-layout{grid-template-columns:1fr}.chat-sidebar{position:fixed;left:0;top:0;bottom:0;width:min(86vw,340px);height:100vh;border-right:1px solid var(--border);border-bottom:none;z-index:60;transform:translateX(-100%);transition:transform .22s ease}.chat-sidebar.mobile-open{transform:translateX(0)}.mobile-sidebar-backdrop{display:block;position:fixed;inset:0;background:rgba(0,0,0,.45);border:none;z-index:50}.chat-main{grid-template-rows:auto 1fr auto;padding:12px;height:100dvh;min-height:100dvh}.sidebar-top .sidebar-action{font-size:1.05rem;font-weight:500}.sidebar-top input{font-size:1.05rem}.sidebar-list{padding-top:14px}.session-item{font-size:1.12rem;line-height:1.35;padding:12px}.session-menu{font-size:1.2rem;padding:6px 10px}.mobile-chat-topbar{position:-webkit-sticky;position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;margin:-12px -12px 0;padding:10px 12px;border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--bg) 90%,transparent);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.chat-main-with-toolbar .messages-wrap{padding-top:10px}.messages-wrap{min-height:0}.chat-floating-top{display:none}.composer-empty{margin:0 auto 8vh}.sidebar-account{margin-top:8px}.message-bubble{max-width:100%}}@keyframes pop-in{0%{opacity:0;transform:translateY(4px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.landing-shell{min-height:100vh;padding:40px 20px 60px;max-width:1060px;margin:0 auto;display:flex;flex-direction:column;gap:18px}.landing-hero{padding:40px;background:linear-gradient(130deg,color-mix(in srgb,var(--panel) 88%,#2563eb 12%),var(--panel))}.landing-kicker{margin:0;font-size:.84rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.landing-hero h1{margin:4px 0 10px;font-size:clamp(1.9rem,3.5vw,3rem);line-height:1.1}.landing-subtitle{max-width:780px;color:var(--muted);margin:0}.landing-actions{margin-top:12px;display:flex;flex-wrap:wrap;gap:10px}.landing-btn{display:inline-flex;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--border-strong);background:var(--panel);color:var(--text);padding:10px 14px;font-weight:600}.landing-btn-primary{background:#2563eb;color:white;border-color:#2563eb}.landing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));grid-gap:14px;gap:14px}.landing-feature h2{margin:0;font-size:1.05rem}.settings-shell{max-width:860px;margin:0 auto;padding:36px 20px 60px}.settings-row{display:flex;align-items:center;justify-content:space-between;border:1px solid var(--border);background:var(--panel-soft);border-radius:12px;padding:12px}.account-popover form{margin:0}.account-popover form button{width:100%}