:root{--sky:#87CEEB;--ink:#0b2a4a;--soft:#3d5d7c;--blue:#1e6fd9;--glass:rgba(255,255,255,.55);--line:rgba(255,255,255,.75)}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;background:linear-gradient(160deg,#a9dcf2 0%,var(--sky) 45%,#bfe6f7 100%);color:var(--ink);font:400 16px/1.55 Lexend,system-ui,sans-serif;display:flex;flex-direction:column}
h1,h2,.brand{font-family:Manrope,system-ui,sans-serif}
.bubbles span{position:fixed;border-radius:50%;background:rgba(255,255,255,.35);filter:blur(2px);z-index:0;pointer-events:none}
.bubbles span:nth-child(1){width:320px;height:320px;top:-80px;right:-60px}
.bubbles span:nth-child(2){width:180px;height:180px;bottom:12%;left:-50px}
.bubbles span:nth-child(3){width:90px;height:90px;top:40%;right:12%}
.bubbles span:nth-child(4){width:50px;height:50px;top:22%;left:18%}
.top,main,.foot{position:relative;z-index:1}
.top{padding:18px 24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--ink);text-decoration:none}
.tile{width:38px;height:38px;border-radius:10px;background:#fff;display:grid;place-items:center;box-shadow:0 2px 8px rgba(11,42,74,.12)}
.tile img{width:26px;height:26px}
main{width:100%;max-width:1040px;margin:0 auto;padding:0 18px 40px;flex:1}
.hero{text-align:center;padding:28px 0 22px}
.hero h1{font-size:clamp(30px,5vw,50px);line-height:1.1;margin:0 0 10px;font-weight:800}
.hero h1 span{color:var(--blue)}
.hero p{margin:0;color:var(--soft);font-size:18px}
.card{background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:22px;box-shadow:0 10px 30px rgba(11,42,74,.10);padding:18px}
.input input{width:100%;font:inherit;font-size:17px;padding:15px 16px;border-radius:14px;border:1px solid #cfe7f5;background:#fff;color:var(--ink);outline:none}
.input input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(30,111,217,.15)}
.row{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px;align-items:center}
.seg{display:inline-flex;background:rgba(255,255,255,.7);border-radius:12px;padding:3px}
.seg button,.tabs button{font:inherit;font-size:14px;border:0;background:none;color:var(--soft);padding:8px 13px;border-radius:9px;cursor:pointer}
.seg button.on,.tabs button.on{background:#fff;color:var(--ink);font-weight:500;box-shadow:0 1px 4px rgba(11,42,74,.12)}
.primary{margin-left:auto;font:500 16px Lexend,sans-serif;background:var(--blue);color:#fff;border:0;border-radius:12px;padding:12px 22px;cursor:pointer;box-shadow:0 4px 14px rgba(30,111,217,.3)}
.primary:disabled{opacity:.55;cursor:wait}
.ghost{font:inherit;font-size:14px;background:#fff;border:1px solid #cfe7f5;color:var(--ink);border-radius:9px;padding:7px 12px;cursor:pointer}
.status{margin-top:14px;color:var(--soft);font-size:14px}
.bar{height:6px;background:rgba(255,255,255,.8);border-radius:6px;overflow:hidden;margin-bottom:8px}
.bar i{display:block;height:100%;width:30%;background:var(--blue);border-radius:6px;animation:slide 1.4s ease-in-out infinite}
@keyframes slide{0%{margin-left:-30%}100%{margin-left:100%}}
.error{margin-top:12px;background:#fde8e8;color:#9b1c1c;border-radius:10px;padding:10px 12px;font-size:14px}
.result{margin-top:18px;padding:12px}
.tabs{display:flex;gap:4px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
.grow{flex:1}
#frame{width:100%;height:min(78vh,760px);border:0;border-radius:14px;background:#fff}
#plan{width:100%;min-height:420px;font:inherit;font-size:15px;border:1px solid #cfe7f5;border-radius:14px;padding:14px;background:#fff;color:var(--ink);resize:vertical}
.hint{font-size:13px;color:var(--soft);margin:6px 2px 0}
#code{margin:0;max-height:70vh;overflow:auto;background:#fff;border-radius:14px;padding:14px;font-size:12.5px;white-space:pre-wrap;word-break:break-word}
.history{margin-top:26px}
.history h2{font-size:18px;margin:0 0 10px}
#list{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.item{background:var(--glass);border:1px solid var(--line);border-radius:14px;padding:12px;cursor:pointer;text-align:left;font:inherit;color:var(--ink)}
.item b{display:block;font-family:Manrope,sans-serif;font-size:15px;margin-bottom:3px}
.item small{color:var(--soft)}
.foot{display:flex;align-items:center;justify-content:center;gap:8px;padding:18px;font:600 13px Manrope,sans-serif;color:var(--soft)}
.foot img{height:22px;width:auto}
@media (max-width:600px){.primary{width:100%;margin-left:0}.seg{flex:1}.seg button{flex:1}#frame{height:72vh}.hero p{font-size:16px}}