.chat-intro{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin:8px 0 24px}
.chat-intro h1{font-size:clamp(2.4rem,6vw,5rem);line-height:.96;margin:8px 0 12px}
.chat-intro p{margin:0;color:var(--muted)}
.quiet-action{background:transparent;color:#8eb5da;border:1px solid #294662;border-radius:999px;padding:9px 14px;font-weight:650}
.chatbox-v2{height:min(58vh,650px);padding:26px;scroll-behavior:smooth}
.chatbox-v2 .msg{width:min(88%,900px);max-width:none;box-shadow:0 12px 32px rgba(0,0,0,.14)}
.chatbox-v2 .msg.user{width:auto;max-width:70%}
.response-actions{display:flex;gap:14px;margin-top:18px;padding-top:12px;border-top:1px solid #294662}
.response-actions a{font-size:.88rem;color:#79dff1;text-decoration:none}
.response-actions a:hover{text-decoration:underline}
.composer-v2{position:relative;margin-top:14px;background:#0a1c30;border:1px solid #31506f;border-radius:22px;padding:10px;box-shadow:0 18px 45px rgba(0,0,0,.2)}
.composer-row{display:grid;grid-template-columns:44px minmax(180px,1fr) auto 48px;gap:9px;align-items:end}
.composer-row textarea{min-height:62px;max-height:180px;resize:vertical;border:0;background:transparent;color:#eef7ff;padding:12px 8px;font:inherit;outline:none}
.icon-button,.send-button{width:44px;height:44px;border-radius:50%;padding:0;font-size:1.55rem;display:grid;place-items:center}
.icon-button{background:#17314f;color:#bfe5ff;border:1px solid #31506f}
.send-button{background:linear-gradient(135deg,#26c7e8,#347cf2);color:#041322}
.composer-row select{height:44px;border:1px solid #31506f;border-radius:12px;background:#10243d;color:#dceeff;padding:0 36px 0 12px;font:inherit}
.attachment-chip{display:inline-flex;margin:0 0 8px 53px;padding:7px 11px;border-radius:999px;background:#143957;color:#8de8f6;font-size:.87rem}
.chat-state{min-height:24px;margin:8px 8px;color:#8eb5da;font-size:.9rem}
.academic-answer>div{font-size:1rem}
@media(max-width:760px){
 .chat-intro{align-items:flex-start;flex-direction:column}.chat-intro h1{font-size:3rem}
 .composer-row{grid-template-columns:42px 1fr 45px}.composer-row select{grid-column:2/4;grid-row:2}
 .chatbox-v2 .msg,.chatbox-v2 .msg.user{max-width:96%;width:auto}.attachment-chip{margin-left:0}
}
.conversation-tools{display:flex;gap:.7rem;align-items:center;flex-wrap:wrap}.conversation-tools select{max-width:260px;background:#081a30;color:#dcecff;border:1px solid #284a6d;border-radius:999px;padding:.72rem 1rem}.conversation-tools .quiet-action{white-space:nowrap}
.response-actions{display:none}.response-actions.requested-export{display:flex}
.compact-intro{align-items:center;margin-bottom:16px}.compact-intro h1{font-size:clamp(1.75rem,4vw,3rem);margin:.25rem 0}.compact-intro>div:first-child{min-width:0}.compact-intro h1{overflow:hidden;text-overflow:ellipsis}
.chat-menu{position:relative}.chat-menu summary{list-style:none;display:grid;place-items:center;width:42px;height:42px;border:1px solid #31506f;border-radius:50%;background:#0b2139;color:#cbe5f9;cursor:pointer;font-weight:800}.chat-menu summary::-webkit-details-marker{display:none}.chat-menu[open]{z-index:12}.chat-menu[open] summary{border-color:var(--cyan)}.chat-menu>form{position:absolute;right:0;top:50px;width:280px;padding:12px;background:#0b1d32;border:1px solid #31506f;box-shadow:0 18px 45px #0008}.chat-menu>form:first-of-type{border-radius:14px 14px 0 0}.chat-menu>form:last-of-type{top:143px;border-top:0;border-radius:0 0 14px 14px}.chat-menu form button{width:100%;margin-top:8px;padding:10px}.chat-menu form .danger{background:#3b1d2a;color:#ff9bad;border:1px solid #75384a}
.chat-welcome{min-height:100%;display:grid;place-content:center;justify-items:center;text-align:center;padding:30px;color:#dcecff}.welcome-mark{width:52px;height:52px;border-radius:17px;font-weight:900}.chat-welcome h2{font-size:clamp(1.55rem,3vw,2.25rem);margin:16px 0 4px}.chat-welcome p{color:var(--muted);margin:0}.prompt-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:24px;max-width:780px}.prompt-grid button{background:#102a46;color:#dcecff;border:1px solid #31506f;text-align:left;font-weight:650;line-height:1.35;min-height:84px}.prompt-grid button:hover{border-color:var(--cyan);transform:translateY(-2px)}
.message-tools{display:flex;justify-content:flex-start;gap:12px;margin-top:14px;padding:10px 0 0;border-top:1px solid #294662;text-align:left}.message-tools button,.message-tools a{background:transparent;border:0;color:#93b5d2;font-size:.82rem;font-weight:700;padding:3px 0}.message-tools button:hover,.message-tools a:hover{color:var(--cyan);text-decoration:none}.academic-answer ul{margin:.7rem 0 1rem;padding-left:1.35rem}.academic-answer li{margin:.35rem 0}.academic-answer aside{display:block;margin:1rem 0;padding:.8rem 1rem;border-left:3px solid var(--cyan);background:#0b1d32;color:#bdd8ee}
.attachment-chip{align-items:center;gap:8px}.attachment-chip button{border:0;background:transparent;color:#c8edf5;padding:0 2px;font-size:1.15rem}.composer-foot{display:flex;justify-content:space-between;gap:16px;padding:6px 54px 0;color:#7898b5;font-size:.76rem}.composer-row button:disabled,.composer-row select:disabled{opacity:.55;cursor:wait}
@media(max-width:760px){.compact-intro{gap:12px}.compact-intro h1{font-size:1.75rem}.conversation-tools{width:100%}.conversation-tools select{flex:1;max-width:none}.prompt-grid{grid-template-columns:1fr;width:100%}.prompt-grid button{min-height:auto}.chat-menu>form{right:0}.composer-foot{padding:6px 4px 0;display:block}.composer-foot span{display:block}.composer-foot span:last-child{display:none}}