:root{--bg:#120d22;--card:rgba(255,255,255,.08);--card2:rgba(255,255,255,.12);--text:#fff8ff;--muted:#c9bedb;--accent:#c99cff;--accent2:#7be7d4;--danger:#ff8fa3;--shadow:0 18px 48px rgba(0,0,0,.28)}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:radial-gradient(circle at 10% 0,#4b2b80 0,#191029 38%,#0d0a17 100%)}body:before{content:"";position:fixed;inset:0;background:radial-gradient(circle at 80% 10%,rgba(123,231,212,.18),transparent 26%),radial-gradient(circle at 30% 80%,rgba(201,156,255,.18),transparent 30%);pointer-events:none}.app{position:relative;max-width:720px;margin:0 auto;min-height:100vh;padding:16px 14px 92px}.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;padding:12px 2px 16px;background:linear-gradient(180deg,rgba(18,13,34,.96),rgba(18,13,34,.74),transparent);backdrop-filter:blur(12px)}h1,h2,h3,p{margin:0}h1{font-size:24px;line-height:1.05;letter-spacing:-.04em}h2{font-size:22px;margin-bottom:12px;letter-spacing:-.03em}h3{font-size:16px;margin-bottom:8px}.eyebrow{font-size:12px;color:var(--accent2);text-transform:uppercase;letter-spacing:.12em;font-weight:800}.screen{display:none;animation:fade .2s ease}.screen.active{display:block}@keyframes fade{from{opacity:.3;transform:translateY(6px)}to{opacity:1;transform:none}}.card{background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid rgba(255,255,255,.14);border-radius:24px;padding:18px;margin:12px 0;box-shadow:var(--shadow);backdrop-filter:blur(18px)}.glass{display:flex;gap:16px;align-items:center}.moon{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;font-size:42px;background:linear-gradient(135deg,var(--accent),#f2d3ff);color:#27143f;box-shadow:0 0 38px rgba(201,156,255,.55)}.hero h2{margin-bottom:8px}.hero p,.hint{color:var(--muted);line-height:1.42}.grid{display:grid;gap:10px}.menu-grid{grid-template-columns:repeat(2,1fr)}button{border:0;cursor:pointer;color:var(--text);font:inherit}.menu-grid button,.tabs button,.plans button{min-height:62px;border-radius:20px;background:linear-gradient(135deg,rgba(255,255,255,.14),rgba(255,255,255,.07));border:1px solid rgba(255,255,255,.14);box-shadow:0 10px 28px rgba(0,0,0,.18);font-weight:850}.menu-grid button{display:flex;flex-direction:column;gap:6px;align-items:center;justify-content:center;font-size:24px}.menu-grid span{font-size:13px}.ghost{border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);border-radius:999px;padding:9px 12px;font-weight:800}.primary{width:100%;min-height:48px;border-radius:18px;background:linear-gradient(135deg,var(--accent),#8f68ff);font-weight:900;margin-top:12px;box-shadow:0 14px 28px rgba(143,104,255,.3)}.soft{box-shadow:none}.premium{display:flex;gap:14px;align-items:center;background:linear-gradient(135deg,rgba(201,156,255,.28),rgba(123,231,212,.16));cursor:pointer}.premium span{font-size:32px}.premium p{color:var(--muted);margin-top:4px}label{display:block;margin:12px 0 0;color:var(--muted);font-size:13px;font-weight:750}input,textarea{width:100%;margin-top:7px;border:1px solid rgba(255,255,255,.14);border-radius:16px;background:rgba(255,255,255,.09);color:var(--text);padding:13px 14px;font:inherit;outline:none}textarea{min-height:96px;resize:vertical}.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.chip{padding:10px 12px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);color:var(--muted);font-weight:800}.chip.active{background:linear-gradient(135deg,var(--accent),#8f68ff);color:#fff}.tabs{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.tabs button{min-height:46px;border-radius:16px;font-size:13px}.plans{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.plans button{min-height:76px}.result .answer,.msg,.history-item{white-space:pre-wrap;line-height:1.45;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.12);border-radius:22px;padding:16px;margin:12px 0;box-shadow:0 10px 30px rgba(0,0,0,.16)}.answer-title{font-weight:900;color:var(--accent2);margin-bottom:8px}.loading{padding:18px;text-align:center;color:var(--muted)}.chat-box{min-height:calc(100vh - 210px);padding-bottom:74px}.msg.user{margin-left:36px;background:linear-gradient(135deg,rgba(201,156,255,.24),rgba(143,104,255,.16))}.msg.ai{margin-right:36px}.composer{position:fixed;left:50%;bottom:70px;transform:translateX(-50%);width:min(720px,100%);padding:0 14px;display:flex;gap:8px;z-index:6}.composer input{margin:0;background:rgba(24,17,43,.9);backdrop-filter:blur(16px)}.composer button{width:48px;border-radius:16px;background:linear-gradient(135deg,var(--accent),#8f68ff);font-size:22px}.bottom{position:fixed;left:50%;bottom:0;transform:translateX(-50%);width:min(720px,100%);display:grid;grid-template-columns:repeat(5,1fr);gap:2px;padding:8px 10px max(8px,env(safe-area-inset-bottom));background:rgba(16,11,30,.88);backdrop-filter:blur(18px);border-top:1px solid rgba(255,255,255,.12);z-index:7}.bottom button{background:transparent;color:var(--muted);font-size:11px;font-weight:800;padding:8px 2px}.center{text-align:center}.error{color:var(--danger)}@media(max-width:420px){.app{padding-left:12px;padding-right:12px}h1{font-size:22px}.card{border-radius:22px;padding:16px}.menu-grid button{min-height:58px}.tabs{grid-template-columns:1fr 1fr}}