/* Minimal, clean MVP styling (not 'fancy design', just usable) */
:root{
  --bg:#0b0f14;
  --card:#0f1620;
  --text:#e9eef6;
  --muted:#a8b3c4;
  --line:#223042;
  --accent:#4dd2ff;
  --accent2:#ffe14d;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  background: radial-gradient(1200px 600px at 10% 10%, rgba(77,210,255,.15), transparent 55%),
              radial-gradient(900px 500px at 90% 15%, rgba(255,225,77,.12), transparent 55%),
              var(--bg);
  color:var(--text);
}

a{color:var(--text); text-decoration:none}
a:hover{text-decoration:underline}
.header{
  max-width: 1120px;
  margin: 0 auto;
  padding: 18px 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.brand{display:flex; align-items:center; gap:12px; min-width: 240px;}
.logo{
  width:38px;height:38px;border-radius:12px;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,.25), transparent 45%),
    linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 10px 25px rgba(0,0,0,.35);
}
.brand-name{font-weight:800; letter-spacing:.2px; font-size:18px}
.brand-sub{font-size:12px; color:var(--muted); margin-top:2px}

.nav{display:flex; align-items:center; gap:12px; flex-wrap:wrap; justify-content:flex-end}
.nav a{padding:8px 10px; border-radius:10px; border:1px solid transparent}
.nav a.active{border-color: var(--line); background: rgba(255,255,255,.03)}
.lang{display:flex; gap:6px; padding-left:6px}
.lang-btn{
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  color: var(--text);
  padding:7px 10px;
  border-radius:10px;
  cursor:pointer;
  font-weight:600;
}
.lang-btn.active{outline:2px solid rgba(77,210,255,.35)}

.main{max-width:1120px; margin:0 auto; padding: 0 16px 32px}
.card{
  border:1px solid var(--line);
  background: rgba(15,22,32,.78);
  border-radius: 18px;
  box-shadow: 0 20px 60px rgba(0,0,0,.35);
  padding: 18px;
}
.title{margin: 0 0 8px; font-size: 26px; letter-spacing:.2px}
.lead{margin: 0 0 14px; color: var(--muted); line-height:1.5}

.controls{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  align-items:flex-end;
  padding: 12px;
  border:1px solid var(--line);
  border-radius:14px;
  background: rgba(0,0,0,.12);
}
.control{display:flex; flex-direction:column; gap:6px; min-width: 170px}
.label{font-size:12px; color: var(--muted)}
input[type="file"], select{
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  color: var(--text);
  padding:10px 10px;
  border-radius:12px;
}
.buttons{display:flex; gap:10px}
.btn{
  border:1px solid var(--line);
  background: linear-gradient(135deg, rgba(77,210,255,.20), rgba(255,225,77,.14));
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  cursor:pointer;
  font-weight:700;
}
.btn:disabled{opacity:.55; cursor:not-allowed}

.grid2{
  display:grid;
  grid-template-columns: 1.4fr .6fr;
  gap:14px;
  margin-top:14px;
}
@media (max-width: 980px){
  .grid2{grid-template-columns: 1fr}
}
.preview{border:1px solid var(--line); border-radius:14px; overflow:hidden; background: rgba(0,0,0,.14)}
.preview-head{display:flex; justify-content:space-between; gap:10px; padding:10px 12px; border-bottom:1px solid var(--line)}
.preview-title{font-weight:800}
.hint{color: var(--muted); font-size:12px; margin-top:2px}
.canvas-wrap{padding:12px}
canvas{
  width:100%;
  height:auto;
  display:block;
  border-radius:12px;
  background: rgba(255,255,255,.02);
  border: 1px solid rgba(255,255,255,.06);
}

.info{display:flex; flex-direction:column; gap:12px}
.info-box{
  border:1px solid var(--line);
  border-radius:14px;
  padding: 12px;
  background: rgba(0,0,0,.12);
}
.info-title{font-weight:800; margin-bottom:8px}
.stats{
  margin:0;
  color: var(--text);
  font-size:12px;
  line-height:1.45;
  white-space: pre-wrap;
}
.list{margin:0; padding-left:18px; color: var(--muted); line-height:1.6}
.footer{
  display:flex;
  align-items:center;
  gap:10px;
  justify-content:center;
  margin-top: 14px;
  color: var(--muted);
  font-size: 12px;
  flex-wrap:wrap;
}
.sep{opacity:.6}
.doc h2{margin: 16px 0 6px}
.doc ul{margin: 6px 0 0; color: var(--muted); line-height:1.6}
.muted{color: var(--muted); font-size: 12px}