:root{--bg:#071426;--panel:#0c1b30;--panel2:#10233b;--line:#203650;--text:#eaf3ff;--muted:#93a8c1;--cyan:#43d9f4;--violet:#a69bff}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.topbar{height:72px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 26px;background:#08172a}.brand{display:flex;gap:11px;align-items:center;text-decoration:none;color:var(--text);font-weight:750;font-size:18px}.brand small{display:block;font-size:10px;color:var(--muted);font-weight:500;letter-spacing:.4px}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:13px;background:linear-gradient(135deg,#3bdcf4,#8e8bff);color:#061425;font-size:22px;font-weight:900}.top-actions{display:flex;gap:15px;align-items:center}.tier{font-size:12px;color:#b5c6d9}.btn-outline-info{border-color:#34788b;color:#83e9fa}.layout{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:calc(100vh - 72px)}.sidebar{border-right:1px solid var(--line);padding:22px 14px;display:flex;flex-direction:column;gap:6px;background:#09182b}.new-chat{padding:12px;border:1px solid #2b526d;background:#102b42;color:#e7faff;border-radius:10px;text-align:left;margin-bottom:20px}.nav-label{font-size:10px;letter-spacing:1.8px;color:#6f89a6;padding:15px 10px 6px}.nav-item{border:0;background:transparent;color:#aabbd0;padding:11px 12px;text-align:left;border-radius:8px;display:flex;gap:12px;align-items:center;font-size:14px}.nav-item span{color:inherit}.nav-item.active,.nav-item:hover{background:#122b43;color:#f2fbff}.nav-item.active{box-shadow:inset 2px 0 var(--cyan)}.sidebar-note{margin-top:auto;border-top:1px solid var(--line);padding:18px 8px 0;color:#c2d4e8;font-size:12px}.sidebar-note small{display:inline-block;margin-top:6px;color:var(--muted);line-height:1.5}.main{min-width:0;position:relative;display:flex;flex-direction:column;min-height:calc(100vh - 72px);padding:0 28px 24px}.welcome{width:min(780px,100%);margin:auto;text-align:center;padding:38px 0 22px}.orb{margin:0 auto 25px;width:56px;height:56px;border:1px solid #326078;border-radius:19px;display:grid;place-items:center;color:var(--cyan);font-size:27px;background:radial-gradient(circle at 25% 20%,#244c65,#102038 70%);box-shadow:0 0 50px #2ac9e31a}.eyebrow{font-size:10px;letter-spacing:2.6px;color:#82d8e9;font-weight:700}h1{font-size:clamp(34px,4.4vw,56px);letter-spacing:-2px;line-height:1.1;margin:15px 0}h1 span{background:linear-gradient(90deg,#8be9f5,#a8a2ff);background-clip:text;color:transparent}.subhead{color:var(--muted);font-size:15px;margin:15px 0 30px}.suggestions{display:grid;grid-template-columns:1fr 1fr;gap:10px;text-align:left}.suggestions button{background:#0c1d32;color:#d6e6f8;border:1px solid var(--line);border-radius:12px;padding:15px;font-size:13px;display:flex;justify-content:space-between;gap:10px}.suggestions button:hover{border-color:#47869d;background:#102640}.suggestions span{color:var(--cyan)}.composer-wrap{width:min(850px,100%);margin:0 auto}.mode-label{font-size:12px;color:#8ca6c0;margin:0 0 8px 4px}.composer-wrap form{border:1px solid #2b4763;background:#0d1e32;border-radius:16px;padding:13px 14px 10px;box-shadow:0 10px 40px #0002}.composer-wrap textarea{width:100%;resize:vertical;min-height:54px;max-height:240px;border:0;outline:0;background:transparent;color:var(--text);padding:6px 5px;font:inherit;font-size:14px}.composer-wrap textarea::placeholder{color:#6f88a3}.composer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:7px}.composer-hint{font-size:10px;color:#7189a4}.composer-bottom button{border:0;border-radius:10px;width:36px;height:36px;background:linear-gradient(135deg,#51dff4,#aaa2ff);color:#071426;font-size:23px;font-weight:800}.fine-print{text-align:center;font-size:10px;color:#657e98;margin:10px 0}.chat-area{width:min(850px,100%);margin:20px auto;flex:1;min-height:240px}.messages{display:flex;flex-direction:column;gap:16px;padding-bottom:15px}.message{padding:15px 17px;border-radius:14px;max-width:92%;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.65;font-size:14px}.message.user{align-self:flex-end;background:#17324c;border:1px solid #28516b}.message.assistant{align-self:flex-start;background:#0b1a2d;border:1px solid #1c344e}.message .role{font-size:10px;letter-spacing:1px;text-transform:uppercase;color:#7fdff0;margin-bottom:7px}.message .content{white-space:pre-wrap}.message.error{border-color:#8b5360}.spinner{display:inline-block;width:13px;height:13px;border:2px solid #34536c;border-top-color:var(--cyan);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}[hidden]{display:none!important}@media(max-width:760px){.topbar{padding:0 14px;height:64px}.tier{display:none}.layout{grid-template-columns:58px minmax(0,1fr);min-height:calc(100vh - 64px)}.sidebar{padding:14px 7px;align-items:center}.new-chat{font-size:0;width:42px;height:42px;padding:0;text-align:center}.new-chat:first-letter{font-size:20px}.nav-label,.nav-item span,.sidebar-note{display:none}.nav-item{width:42px;justify-content:center;padding:12px 0}.main{padding:0 13px 16px;min-height:calc(100vh - 64px)}.suggestions{grid-template-columns:1fr}.welcome{padding-top:28px}.brand small{display:none}h1{letter-spacing:-1px}.composer-hint{max-width:75%}}

/* Official logo and added intelligence tools */
.brand-logo { display:block; width:clamp(44px,5vw,64px); height:auto; max-height:54px; object-fit:contain; margin-right:10px; }
.brand { display:flex; align-items:center; gap:10px; }
.nav-item { text-align:left; }
.nav-item span { margin-left:6px; }