:root{
    --bg-1:#0b1016;
    --bg-2:#0f1a22;
    --ink:#d8e0e8;
    --muted:#93a4b2;
    --accent:#8fbad3;
    --line:#1f2a34;
}
*{box-sizing:border-box;}
body{
    margin:0;
    background:
        radial-gradient(900px 500px at 20% -10%, #162431 0%, transparent 60%),
        radial-gradient(800px 500px at 110% 20%, #13212b 0%, transparent 60%),
        linear-gradient(180deg, var(--bg-1), var(--bg-2));
    color:var(--ink);
    font-family:"Space Grotesk","Segoe UI",sans-serif;
}
.wrap{
    max-width:980px;
    margin:0 auto;
    padding:32px 20px 56px;
}
.wrap.home{
    padding:48px 20px 64px;
}
.wrap.wide{
    max-width:1100px;
}
.grid-rotate .grid-rotate-form-main{
    margin-bottom:12px;
}
.grid-rotate .grid-rotate-form textarea{
    height:96px;
}
.grid-rotate .grid-rotate-form .row{
    gap:12px;
}
.grid-rotate .grid-rotate-form .field{
    gap:6px;
}
.grid-rotate .grid-rotate-form .btn{
    padding:6px 10px;
    font-size:13px;
}
.grid-rotate .grid-rotate-form input[type="number"]{
    width:60px;
    font-size:14px;
    padding:5px;
}
.grid-rotate .grid-rotate-form input[type="text"]{
    font-size:13px;
    padding:5px 6px;
}
.grid-rotate .grid-rotate-form .section-title{
    margin-top:8px;
}
.chip{
    display:inline-flex;
    align-items:center;
    gap:10px;
    padding:6px 12px;
    border:1px solid var(--line);
    border-radius:999px;
    color:var(--muted);
    background:rgba(15,26,34,0.6);
    font-size:13px;
    letter-spacing:0.08em;
    text-transform:uppercase;
}
h1{
    margin:0 0 10px 0;
    font-size:28px;
}
.title-sm{
    font-size:24px;
}
.title-xl{
    margin:18px 0 8px;
    font-size:40px;
    font-weight:600;
    letter-spacing:0.02em;
}
h2{
    margin:24px 0 10px;
    font-size:20px;
    color:var(--muted);
    letter-spacing:0.06em;
    text-transform:uppercase;
}
p{
    margin:0 0 16px 0;
    color:var(--muted);
    line-height:1.6;
}
p.lead{
    margin:0;
    font-size:18px;
    max-width:760px;
}
.panel{
    border:1px solid var(--line);
    background:#0b0b0b;
    padding:14px;
    border-radius:12px;
}
.panel.soft{
    background:rgba(10,14,18,0.7);
    display:grid;
    gap:16px;
}
.panel.inline{
    display:inline-block;
    max-width:none;
}
pre.panel{
    white-space:pre-wrap;
    word-break:break-word;
    font-family:"IBM Plex Mono","SFMono-Regular",monospace;
    font-size:13.5px;
    line-height:1.4;
}
pre.panel.grid-output{
    white-space:pre;
    padding:14px;
    border:1px solid var(--line);
    background:#0b0b0b;
    font-size:18px;
    line-height:1.35;
    letter-spacing:0.5px;
    overflow:visible;
    max-width:none;
    display:inline-block;
}
textarea{
    width:100%;
    height:160px;
    background:#0b0b0b;
    color:#ddd;
    border:1px solid #333;
    padding:8px;
    font-family:"IBM Plex Mono","SFMono-Regular",monospace;
    font-size:14px;
    border-radius:8px;
}
textarea.textarea-sm{
    height:120px;
}
input[type="number"], input[type="text"]{
    background:#0b0b0b;
    color:#ddd;
    border:1px solid #333;
    padding:6px 8px;
    border-radius:8px;
    font-family:"IBM Plex Mono","SFMono-Regular",monospace;
    font-size:14px;
}
input[type="number"]{
    width:70px;
    text-align:center;
    font-size:16px;
    padding:6px;
}
.btn{
    background:#111923;
    color:var(--ink);
    border:1px solid #27323c;
    padding:8px 12px;
    cursor:pointer;
    text-decoration:none;
    border-radius:10px;
    font-family:"IBM Plex Mono","SFMono-Regular",monospace;
    font-size:14px;
}
.btn.run-btn{
    background:linear-gradient(180deg, #e6bfd8, #d8a9c7);
    border-color:#c88db3;
    color:#1a1017;
}
.btn.run-btn:hover{
    border-color:#b977a1;
}
.btn:hover{
    border-color:#3a4a59;
}
.meta{
    color:var(--muted);
    font-size:14px;
    margin:0 0 10px 0;
}
.mb-6{margin-bottom:6px;}
.mb-10{margin-bottom:10px;}
.mb-12{margin-bottom:12px;}
.mb-14{margin-bottom:14px;}
.mb-16{margin-bottom:16px;}
.mt-10{margin-top:10px;}
.spacer-6{height:6px;}
.spacer-10{height:10px;}
.spacer-12{height:12px;}
.form-row{
    display:flex;
    align-items:center;
    gap:12px;
    flex-wrap:wrap;
}
.form-row.compact{gap:10px;}
.row.tight{gap:12px;}
.align-center{align-items:center;}
.toolbar{
    display:flex;
    gap:8px;
    flex-wrap:wrap;
    align-items:center;
}
.section-title{margin:10px 0 6px;}
.input-wide{width:160px;}
.input-compact{width:70px;}
.dim{opacity:0.6;}
.error-panel{padding:16px;}
.row{
    display:flex;
    flex-wrap:wrap;
    gap:16px;
}
.field{
    display:flex;
    gap:8px;
    align-items:center;
}
.card{
    flex:1 1 260px;
    border:1px solid #1b242c;
    border-radius:12px;
    padding:16px;
    background:linear-gradient(180deg, rgba(18,24,30,0.7), rgba(12,16,20,0.7));
}
.card.compact{
    flex:1 1 220px;
    padding:14px;
}
.link-card{
    display:block;
    text-decoration:none;
    color:inherit;
    transition:border-color 0.2s ease, transform 0.2s ease;
}
.link-card:hover{
    border-color:#32414d;
    transform:translateY(-2px);
}
.disabled{
    opacity:0.65;
}
.disabled .value{
    color:var(--muted);
}
.label{
    font-family:"IBM Plex Mono","SFMono-Regular",monospace;
    color:var(--accent);
    font-size:12px;
    letter-spacing:0.12em;
    text-transform:uppercase;
}
.value{
    margin-top:8px;
    font-size:16px;
    color:var(--ink);
}
.value.sm{
    font-size:15px;
    line-height:1.5;
    word-break:break-word;
}
.link{
    color:var(--ink);
    text-decoration:none;
    font-family:"IBM Plex Mono","SFMono-Regular",monospace;
    font-size:15px;
}
.link:hover{
    color:var(--accent);
}
.badge{
    display:inline-block;
    margin-top:10px;
    font-size:11px;
    letter-spacing:0.1em;
    text-transform:uppercase;
    color:var(--muted);
}
.footer{
    margin-top:24px;
    color:#6f8190;
    font-size:13px;
    font-family:"IBM Plex Mono","SFMono-Regular",monospace;
}
.mark-first{ color:#32d973; font-weight:600; }
.mark-last{ color:#ff5b5b; font-weight:600; }
.loading{
    position:fixed;
    inset:0;
    display:flex;
    align-items:center;
    justify-content:center;
    background:rgba(8,12,16,0.7);
    color:var(--ink);
    font-family:"IBM Plex Mono","SFMono-Regular",monospace;
    letter-spacing:0.5px;
    opacity:0;
    pointer-events:none;
    transition:opacity 180ms ease;
    z-index:1000;
}
.loading.show{
    opacity:1;
}
.loading .pill{
    border:1px solid var(--line);
    background:#0b0b0b;
    padding:10px 14px;
    border-radius:999px;
    display:flex;
    gap:10px;
    align-items:center;
    font-size:13px;
}
.loading .dot{
    width:6px;
    height:6px;
    border-radius:50%;
    background:var(--accent);
    animation:pulse 0.9s infinite ease-in-out;
}
.loading .dot:nth-child(2){ animation-delay:0.15s; }
.loading .dot:nth-child(3){ animation-delay:0.3s; }
@keyframes pulse{
    0%, 80%, 100% { transform:scale(0.6); opacity:0.4; }
    40% { transform:scale(1); opacity:1; }
}
details.panel{
    margin-bottom:16px;
    padding:0;
}
details.panel > summary{
    list-style:none;
    cursor:pointer;
    padding:16px;
    display:flex;
    align-items:center;
    gap:10px;
}
details.panel > summary::-webkit-details-marker{
    display:none;
}
.panel-body{
    padding:16px;
    border-top:1px solid var(--line);
}
pre.data{
    white-space:pre-wrap;
    margin:0;
    font-family:"IBM Plex Mono","SFMono-Regular",monospace;
    font-size:13px;
    line-height:1.45;
    color:#d7dde2;
}
.toggle{
    margin-left:auto;
    font-size:12px;
    color:var(--muted);
    font-family:"IBM Plex Mono","SFMono-Regular",monospace;
}