:root{
    --bg:#0f1221;
    --body-bg:#0b0f1d;
    --panel:#14182b;
    --muted:#8b93a7;
    --txt:#e9ecf1;
    --brand:#7dd3fc;
    --brand-2:#60a5fa;
    --ok:#22c55e;
    --warn:#eac308;
    --err:#ef4444;
    --radius:18px;
    --gap:14px;

}

*{
    margin:0;
    padding: 0;
    box-sizing: border-box;

}

html, body{
    height: 100%;

}

body{
    font-family: sans-serif;
    background:linear-gradient(180deg, var(--body-bg), var(--bg) 35%);
    color:var(--txt);
}

header{
    padding: 20px;
    background:linear-gradient(90deg, rgba(96, 165, 250, 0.15), rgba(125, 211, 252, 0.1));
    border-bottom:1px solid rgba(255, 255, 255, 0.06);
}

.container{
    max-width: 1200px;
    margin-inline: auto;
    padding:14px;
    justify-content: space-between;
}

.brand{
    display: flex;
    align-items: center;
    gap:10px;
    font-weight: 700;
}

.brand .logo{
    inline-size: 36px;
    block-size:36px;
    border-radius: 10px;
    background: url("https://as1.ftcdn.net/v2/jpg/03/36/04/42/1000_F_336044236_DtS1d8wElWLZqh5FsNYxKNFUiyNEPTYT.jpg") center / cover no-repeat;
}

.title{
    font-size:clamp(18px, 2vw, 22px);
}

main{
    max-width: 1516px;
    margin-inline:auto;
    padding:18px;
    display: grid;
    grid-template-columns: 280px 1fr 360px;
    gap:var(--gap);
}

@media(max-width:1100px){
    main{
        grid-template-columns: 1fr;
    }
}

.card{
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255,0.03));
    border:1px solid rgba(255, 255,255, 0.1);
    border-radius:var(--radius);
    box-shadow: 0 10px 30px rgba(0 ,0, 0, 0,0.25);
}

.panel{
    padding:16px;
}

h2, h3{
    margin:0 0 12px;
}

.muted{
    color:var(--muted);
    font-size:13px;
}

.stack{
    display: flex;
    flex-direction: column;
    gap:10px;
}

.row{
    display: flex;
    flex-direction: row;
    align-items: center;
    gap:10px;
    flex-wrap:wrap;
    justify-content: space-between;
}

.btn{
    appearance: none;
    border: none;
    background: linear-gradient(180deg, var(--brand-2), var(--brand));
    color:#0b111f;
    font-weight: 700;
    padding:10px 14px;
    border:12px;
    cursor: pointer;
    box-shadow: 0 10px 24px rgba(96, 165, 250, 0.35);
}

.btn.secondary{
    background:transparent;
    border:1px solid rgba(255, 255, 255, 0.15);
    color:var(--txt);
    box-shadow: none;
}

.btn.warn{
    background:linear-gradient(180deg, #f59e0b, #eab308);
}

.btn.ok{
    background: linear-gradient(180deg, #34d399, #22c55e);
}

.btn.err{
    background:linear-gradient(180deg, #fb7185, #ef4444);
}

.select, select, .text{
    background: rgba(255,255, 255, 0.12);
    border:1px solid rgba(255, 255, 255, 0.12);
    color:var(--txt);
    padding:10px 12px;
    border-radius: 12px;
}

textarea.text{
    width: 100%;
    min-height: 120px;
}

.tabs{
    display: flex;
    gap:8px;
    flex-wrap:wrap;
}

.tab{
    padding: 8px 12px;
    border-radius: 10px;
    border:1px solid rgba(255,255, 255, 0.03);
    background:rgba(255,255, 255, 0.03);
    cursor: pointer;
    font-weight: 700;
    color:#fff;
}

.tab.active{
    background:linear-gradient(180deg, rgba(125, 211, 252, 0.18), rgba(96, 165, 250, 0.1));
    color:#00FF00 !important;
}


.editor-warp{
    position:relative;
    border:1px solid rgba(255, 255, 255, 0.12);
    border-radius:14px;
    overflow:hidden;
    min-height: 280px;
    background-color: #0b1020;
}

.editor{
    inline-size:100%;
    block-size: 380px;
}


iframe.preview{
    inline-size:100%;
    block-size:380px;   
    border:1px solid rgba(255, 255, 255, 0.12);
    border-radius:14px;
    background-color: #fff;
}

.out{
    background-color: #0a0e1a;
    border:1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    padding:10px;
    min-height: 160px;
    overflow:auto;
    white-space:pre-wrap;
}

.footer{
    opacity:0.7;
    font-size:17px;
    text-align: center;
    padding: 12px;
}

.kbd{
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Cascadia Code", monospace;
    background-color:#0e1324;
    border:1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 2px 6px;
}

.label{
    font-size:13px;
    color:var(--muted);
}