:root{--bg:#f6f8fc;--paper:#ffffff;--paper2:#f9fbff;--line:#e6ebf3;--text:#111827;--muted:#64748b;--accent:#3468f6;--accent2:#0ea5e9;--danger:#ef4444;--success:#10b981;--shadow:0 22px 70px rgba(15,23,42,.10)}*{box-sizing:border-box}html,body{height:100%}body{margin:0;min-height:100dvh;background:radial-gradient(circle at 8% 0%,rgba(52,104,246,.12),transparent 28rem),radial-gradient(circle at 100% 20%,rgba(14,165,233,.10),transparent 25rem),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Arial,sans-serif;overflow:hidden}.shell{height:100dvh;display:grid;place-items:center;padding:16px}.hidden{display:none!important}
.login-card{width:min(520px,100%);background:rgba(255,255,255,.88);border:1px solid var(--line);border-radius:30px;padding:32px;box-shadow:var(--shadow);backdrop-filter:blur(20px)}.brand-row{display:flex;gap:18px;align-items:center;margin-bottom:24px}.brand-orb,.logo-dot{display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-weight:950;box-shadow:0 14px 34px rgba(52,104,246,.28)}.brand-orb{width:72px;height:72px;border-radius:24px}.logo-dot{width:42px;height:42px;border-radius:15px;flex:0 0 auto}.login-card h1,.app h1{margin:0;font-size:30px;letter-spacing:-.045em}.login-card p{color:var(--muted);line-height:1.55;margin:6px 0 0}label{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:850}input,textarea,select{width:100%;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:16px;padding:14px 16px;font:inherit;outline:none}select option{background:#fff;color:#111}input:focus,textarea:focus,select:focus{border-color:rgba(52,104,246,.75);box-shadow:0 0 0 4px rgba(52,104,246,.12)}.login-card input{margin:7px 0 16px}button{border:0;border-radius:15px;background:linear-gradient(135deg,var(--accent),#244fd8);color:white;padding:12px 15px;font-weight:850;cursor:pointer;transition:.18s transform,.18s box-shadow,.18s background}button:hover{transform:translateY(-1px);box-shadow:0 12px 24px rgba(52,104,246,.18)}button:disabled{opacity:.55;cursor:not-allowed}.ghost{background:#fff!important;color:var(--accent)!important;border:1px solid var(--line)!important}.danger{background:#fff!important;color:var(--danger)!important;border:1px solid #fecaca!important}.danger-text{color:var(--danger)!important}.login-card button{width:100%;margin-top:6px}.error{min-height:22px;margin-top:14px;color:var(--danger);font-weight:700}
.app{width:min(1240px,100%);height:calc(100dvh - 32px);max-height:930px;display:grid;grid-template-columns:310px minmax(0,1fr);background:rgba(255,255,255,.82);border:1px solid rgba(226,232,240,.9);border-radius:32px;overflow:hidden;box-shadow:var(--shadow);backdrop-filter:blur(18px)}.sidebar{min-height:0;border-right:1px solid var(--line);background:linear-gradient(180deg,#fff,#f8fbff);display:flex;flex-direction:column;min-width:0}.side-top{padding:18px;display:flex;gap:12px;align-items:center;border-bottom:1px solid var(--line)}.side-top b{display:block}.side-top small{display:block;color:var(--muted);margin-top:2px}.side-actions{display:grid;grid-template-columns:1fr auto;gap:8px;padding:14px;border-bottom:1px solid var(--line)}.side-actions button{padding:11px 12px}.nav-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:12px 14px}.tab{background:#eef4ff;color:#46607f;box-shadow:none}.tab.active{background:var(--text);color:#fff}.folder-title{font-size:12px;text-transform:uppercase;letter-spacing:.11em;color:#94a3b8;font-weight:900;padding:10px 16px 6px}.folder-list{display:flex;gap:8px;overflow-x:auto;padding:0 14px 10px}.folder{background:#fff;color:#334155;border:1px solid var(--line);white-space:nowrap;padding:9px 12px;box-shadow:none}.folder.active{background:#eaf1ff;color:#1d4ed8;border-color:#b8ccff}.chat-list{min-height:0;flex:1 1 auto;padding:10px 12px 16px;overflow:auto;display:flex;flex-direction:column;gap:10px}.chat-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:8px;box-shadow:0 8px 22px rgba(15,23,42,.04)}.chat-card.active{border-color:#9bb8ff;box-shadow:0 14px 34px rgba(52,104,246,.12)}.chat-main{width:100%;background:transparent;color:var(--text);text-align:left;box-shadow:none;padding:9px}.chat-main:hover{box-shadow:none;transform:none}.chat-main span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:850}.chat-main small{display:block;color:var(--muted);margin-top:6px;font-weight:650}.mini-actions{display:flex;gap:6px;padding:0 6px 4px}.mini-actions button{flex:1;background:#f8fafc;color:#475569;border:1px solid var(--line);box-shadow:none;padding:7px 8px;border-radius:12px;font-size:12px}.empty{color:var(--muted);padding:14px;text-align:center;border:1px dashed var(--line);border-radius:18px;background:#fff}
.main-pane{min-height:0;min-width:0;display:grid;grid-template-rows:auto minmax(0,1fr) auto;background:linear-gradient(180deg,#fff,#fbfdff)}header{min-height:86px;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.86);z-index:2}header p{margin:4px 0 0;color:var(--muted);font-size:13px}.eyebrow{color:var(--accent);font-size:12px;letter-spacing:.16em;font-weight:950;margin-bottom:3px}.status{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}.status span{border:1px solid var(--line);border-radius:999px;padding:9px 12px;color:#334155;background:#fff;font-size:13px;box-shadow:0 8px 20px rgba(15,23,42,.04)}.status button{background:#fff;color:#334155;border:1px solid var(--line);padding:10px 12px;box-shadow:none}.messages{min-height:0;overflow:auto;padding:26px;display:flex;flex-direction:column;gap:14px}.msg{max-width:min(780px,92%);padding:15px 17px;border-radius:22px;border:1px solid var(--line);line-height:1.55;white-space:pre-wrap;box-shadow:0 10px 26px rgba(15,23,42,.04)}.msg.user{align-self:flex-end;background:linear-gradient(135deg,#3468f6,#0ea5e9);color:#fff;border-color:transparent}.msg.ai{align-self:flex-start;background:#fff}.msg.sys{align-self:center;text-align:center;color:var(--muted);font-size:14px;background:#f8fafc;border-style:dashed;box-shadow:none}.composer-wrap{z-index:5;padding:14px 18px 16px;border-top:1px solid var(--line);background:rgba(255,255,255,.94);box-shadow:0 -18px 36px rgba(15,23,42,.05)}.model-row{display:grid;grid-template-columns:70px minmax(0,1fr);gap:10px;align-items:center;margin-bottom:9px}.composer{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:end}.composer textarea{resize:none;max-height:150px;min-height:54px;background:#fff}.composer button{height:54px;min-width:104px}.hint{color:var(--muted);font-size:12px;margin-top:8px}
@media(max-width:880px){body{overflow:hidden}.shell{padding:0}.app{height:100dvh;max-height:none;border-radius:0;grid-template-columns:1fr;grid-template-rows:238px minmax(0,1fr)}.sidebar{height:238px;border-right:0;border-bottom:1px solid var(--line)}.side-top{padding:10px 12px}.side-actions{padding:8px 12px}.nav-tabs{padding:8px 12px}.folder-title{padding:7px 12px 4px}.chat-list{flex-direction:row;overflow-x:auto;overflow-y:hidden;padding:8px 12px}.chat-card{min-width:225px}.folder-list{padding:0 12px 7px}.login-card{border-radius:0;min-height:100dvh;display:flex;flex-direction:column;justify-content:center}.main-pane{height:calc(100dvh - 238px)}header{min-height:118px;padding:12px;align-items:flex-start}.app h1{font-size:23px}.model-row{grid-template-columns:1fr}.composer{grid-template-columns:1fr}.composer button{width:100%}.status{justify-content:flex-start;gap:6px}.status span,.status button{font-size:12px;padding:8px 9px}.messages{padding:12px}.msg{max-width:100%;font-size:14px}.composer-wrap{padding:10px 12px calc(10px + env(safe-area-inset-bottom))}.hint{display:none}}