/* Data Viz Critique Expert-inspired theme (clean, blue, high contrast) */
:root{
  --bg: #0b1220;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.08);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);
  --border: rgba(255,255,255,.14);
  --shadow: 0 14px 40px rgba(0,0,0,.35);
  --primary: #4ea3ff;
  --primary2: #2e7dd6;
  --danger: #ff5b6b;
  --ok: #39d98a;
  --focus: rgba(78,163,255,.35);
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  --radius: 18px;
}

:root[data-theme="light"]{
  --bg: #f6f8ff;
  --panel: rgba(10,20,40,.06);
  --panel2: rgba(10,20,40,.08);
  --text: rgba(10,20,40,.92);
  --muted: rgba(10,20,40,.70);
  --border: rgba(10,20,40,.14);
  --shadow: 0 14px 40px rgba(10,20,40,.12);
  --primary: #1f6feb;
  --primary2: #1558bf;
  --focus: rgba(31,111,235,.22);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: var(--sans);
  background: radial-gradient(1200px 600px at 15% 10%, rgba(78,163,255,.22), transparent 60%),
              radial-gradient(900px 500px at 90% 15%, rgba(57,217,138,.16), transparent 55%),
              radial-gradient(900px 500px at 60% 85%, rgba(255,91,107,.12), transparent 55%),
              var(--bg);
  color: var(--text);
}

a{color:inherit}
.container{max-width:1100px;margin:0 auto;padding:18px 16px 40px}

.topbar{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(0,0,0,.18);
  border-bottom: 1px solid var(--border);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding: 12px 14px;
}
:root[data-theme="light"] .topbar{background: rgba(246,248,255,.72)}

.brand{display:flex;align-items:center;gap:12px;min-width:240px}
.logo{
  width:44px;height:44px;border-radius:14px;
  background: linear-gradient(135deg, var(--primary), rgba(255,255,255,.10));
  border: 1px solid rgba(255,255,255,.14);
  display:grid;place-items:center;
  font-weight:800;
  letter-spacing:.5px;
}
:root[data-theme="light"] .logo{border-color: rgba(10,20,40,.14)}
.brandtext .title{font-weight:800;font-size:16px;line-height:1.05}
.brandtext .subtitle{font-size:12px;color:var(--muted);margin-top:3px}

.actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}

.card{
  background: linear-gradient(180deg, var(--panel), transparent 180%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-top: 14px;
}

.card h2{margin:0 0 12px;font-size:16px}
.cardhead{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.cardhead h2{margin:0}

.grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 900px){
  .grid{grid-template-columns:1fr}
}

.row{display:flex;flex-direction:column;gap:8px;margin:10px 0}
.grid2{display:grid;grid-template-columns: 1.3fr .7fr;gap:12px;align-items:center}
@media (max-width: 900px){ .grid2{grid-template-columns:1fr} }

.row-inline{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap}

.label{font-size:12px;color:var(--muted);font-weight:700}
.input{
  width:100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,.16);
  color: var(--text);
  outline:none;
}
:root[data-theme="light"] .input{background: rgba(255,255,255,.72)}
.input:focus{box-shadow: 0 0 0 4px var(--focus); border-color: rgba(78,163,255,.45)}

.btn{
  border: 1px solid var(--border);
  background: rgba(0,0,0,.12);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 14px;
  cursor:pointer;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  gap:8px;
  user-select:none;
}
:root[data-theme="light"] .btn{background: rgba(255,255,255,.62)}
.btn:hover{transform: translateY(-1px)}
.btn:active{transform: translateY(0px)}
.btn:disabled{opacity:.55;cursor:not-allowed}

.btn-primary{
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  border-color: rgba(255,255,255,.18);
  color: white;
}
.btn-ghost{background: transparent}
.btn-sm{padding:8px 10px;border-radius:12px;font-size:12px}

.status{
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px dashed var(--border);
  color: var(--muted);
  min-height: 42px;
  display:flex;
  align-items:center;
}
.status.ok{border-style: solid; color: var(--ok)}
.status.err{border-style: solid; color: var(--danger)}

.hint{font-size:12px;color:var(--muted);line-height:1.5}

.prose{font-size:13px;line-height:1.6}
.prose p{margin:0 0 10px}
.muted{color:var(--muted)}

.steps{margin:0;padding-left:18px}
.steps li{margin: 8px 0; line-height:1.5}

.details summary{cursor:pointer;color:var(--muted);font-weight:700}
.code{
  font-family: var(--mono);
  font-size: 12px;
  overflow:auto;
  padding: 12px;
  background: rgba(0,0,0,.18);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin: 10px 0 0;
}
:root[data-theme="light"] .code{background: rgba(255,255,255,.72)}

.chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 2px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,.10);
  color: var(--muted);
  font-size: 12px;
}
:root[data-theme="light"] .chip{background: rgba(255,255,255,.6)}
.chip b{color: var(--text)}

.footer{margin-top:14px;text-align:center;font-size:12px}