:root{
  --bg:#1b1e23;
  --bg2:#16181c;
  --card:#262a30;
  --card-strong:#33373e;
  --text:#ececef;
  --muted:#aeb3bd;
  --accent:#d32f2f;
  --border:rgba(255,255,255,0.10);
  --shadow:0 10px 30px rgba(0,0,0,0.28);
  --radius:16px;
  --input:#191c21;
  --inputText:#ececef;
}

html[data-theme="light"]{
  --bg:#ffffff;
  --bg2:#f5f5f7;
  --card:#f8f9fb;
  --card-strong:#e5e7eb;
  --text:#1c1c1e;
  --muted:#6b7280;
  --accent:#e2001a;
  --border:#e5e7eb;
  --shadow:0 1px 3px rgba(0,0,0,.08);
  --input:#ffffff;
  --inputText:#111111;
}

*{box-sizing:border-box}
html, body{
  height:100%;
  margin:0;
  padding:0;
  background-color:var(--bg2);
  color:var(--text);
  font:15px/1.45 -apple-system, BlinkMacSystemFont,"SF Pro Text","Inter",Segoe UI,Roboto,Arial,Helvetica,sans-serif;
}

a{color:inherit}

.topbar{
  position:sticky; top:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  gap:16px;
  padding:16px clamp(16px,3vw,28px);
  background:rgba(22,24,28,0.75);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow);
}
html[data-theme="light"] .topbar{
  background:var(--bg);
  backdrop-filter:none;
}

.brand{display:flex; align-items:center; gap:12px; text-decoration:none; color:var(--text)}
.logo{height:30px; width:auto; display:block}
.brand-text{display:flex; flex-direction:column; gap:2px}
.title{font-weight:700; font-size:18px; letter-spacing:.2px}
.subtitle{font-size:13px; color:var(--muted)}

.content{padding:18px clamp(16px,3vw,28px) 40px}

.grid{display:flex; flex-wrap:wrap; gap:18px}

.card{
  position:relative;
  width:320px;
  min-height:200px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  display:flex; flex-direction:column; gap:10px;
  padding:16px;
}
.card.wide{width:min(100%, 1100px)}

h2{margin:0 0 8px; font-size:17px; font-weight:600}

.input{
  width:100%;
  padding:12px 14px;
  border-radius:14px;
  border:1px solid var(--border);
  background:var(--input);
  color:var(--inputText);
}

.upload-row{display:flex; gap:12px; align-items:center; flex-wrap:wrap}

.row{display:flex; gap:10px; align-items:center; flex-wrap:wrap; margin-bottom:4px}

.btn{
  margin-top:10px;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid var(--border);
  background:var(--card-strong);
  color:var(--text);
  font-weight:600;
  cursor:pointer;
}

.btn.primary{
  background:var(--accent);
  border-color:rgba(0,0,0,0.3);
  color:#fff;
}

.btn:disabled{opacity:.55; cursor:not-allowed}

.msg{min-height:18px; margin:10px 0 0; font-size:13px}
.msg.success{color:#7fd8a7}
.msg.error{color:#ff7474}
.muted{color:var(--muted); font-size:13px}

.is-hidden{display:none}

.topbar-links{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
  font-size:13px;
}

.pill{
  border:1px solid var(--border);
  background:var(--card);
  border-radius:999px;
  display:inline-flex;
  overflow:hidden;
}
.pill button{
  border:0;
  background:transparent;
  padding:8px 10px;
  cursor:pointer;
  color:var(--text);
  font-weight:700;
  font-size:12px;
}
.pill button.active{
  background:var(--accent);
  color:#fff;
  box-shadow:0 1px 3px rgba(0,0,0,.12);
}

.toggle{
  border:1px solid var(--border);
  background:var(--card);
  border-radius:50%;
  width:36px;
  height:36px;
  padding:0;
  cursor:pointer;
  font-weight:700;
  font-size:14px;
  color:var(--text);
  display:flex; align-items:center; justify-content:center;
  user-select:none;
}

@media (max-width: 760px){
  .card{width:100%}
  .logo{height:24px}
}