:root{
  --bg: #f3f4f6;         /* gris clair */
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #4b5563;
  --border: rgba(31,41,55,.12);

  --primary: #4f46e5;
  --primary2: #7c3aed;

  --shadow: 0 10px 30px rgba(0,0,0,.06);

  --focus: rgba(79,70,229,.35);
  --danger: #b91c1c;

  --mono-bg: rgba(79,70,229,.08);
  --kbd-bg: rgba(31,41,55,.08);
}

html[data-theme="dark"]{
  --bg: #0f1115;
  --panel: #151922;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: rgba(229,231,235,.14);

  --primary: #8b5cf6;
  --primary2: #a78bfa;

  --shadow: 0 14px 40px rgba(0,0,0,.35);

  --focus: rgba(139,92,246,.35);

  --mono-bg: rgba(139,92,246,.12);
  --kbd-bg: rgba(229,231,235,.10);
}

*{ box-sizing: border-box; }
html, body { height: 100%; }

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  line-height: 1.35;
}

.app{
  max-width: 1100px;
  margin: 0 auto;
  padding: 18px 16px 28px;
}

.topbar{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}

.logo{
  width: 70px;
  height: auto;
  border-radius: 90px;
  display: grid;
  place-items: center;
  display: block;
}

h1{
  margin: 0;
  font-size: 18px;
  letter-spacing: .2px;
}

.subtitle{
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.grid{
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 14px;
}

@media (max-width: 950px){
  .grid{ grid-template-columns: 1fr; }
}

.card{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 14px;
}

.card h2{
  margin: 0 0 12px;
  font-size: 16px;
}

.form{
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.field label{
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}

input[type="text"], input[type="range"], select{
  width: 100%;
  padding: 10px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  outline: none;
}

select{ padding-right: 30px; }

input:focus, select:focus{
  border-color: rgba(79,70,229,.55);
  box-shadow: 0 0 0 4px var(--focus);
}

.field.row{
  display: flex;
  gap: 10px;
  align-items: center;
}

.btn{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  transition: transform .06s ease, background .15s ease, border-color .15s ease;
  user-select: none;
}

.btn:hover{
  border-color: rgba(79,70,229,.35);
  background: rgba(79,70,229,.06);
}

.btn:active{ transform: translateY(1px); }

.btn.primary{
  border-color: rgba(79,70,229,.35);
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color: white;
}

.btn.ghost{
  padding: 10px 10px;
}

.btn-icon{ font-size: 16px; }

.results{
  margin-top: 12px;
}

.result-line{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border: 1px dashed var(--border);
  border-radius: 12px;
}

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

.value{
  font-size: 18px;
  font-weight: 650;
}

.mono{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.result-subgrid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 10px;
}

.result-chip{
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(127,127,127,.03);
}

.chip-label{
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 4px;
}

.chip-value{
  font-size: 14px;
  font-weight: 600;
}

.divider{
  height: 1px;
  background: var(--border);
  margin: 14px 0;
}

.extra h3{
  margin: 0 0 8px;
  font-size: 14px;
}

.help{
  color: var(--muted);
  font-size: 13px;
  margin-top: 6px;
}

.help.small{ font-size: 12px; }

.kbd{
  padding: 2px 6px;
  border-radius: 8px;
  background: var(--kbd-bg);
  border: 1px solid var(--border);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono","Courier New", monospace;
  font-size: 12px;
}

.tableLike{
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.tr{
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 10px;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
}

.tr:first-child{ border-top: 0; }

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

.td{
  font-size: 14px;
  font-weight: 600;
}

.preview{
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.compass{
  position: relative;
  width: 100%;
  max-width: 360px;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
}

.ring{
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--border);
  background:
    radial-gradient(circle at 50% 50%, rgba(79,70,229,.08), transparent 55%),
    linear-gradient(180deg, rgba(127,127,127,.05), transparent);
}

.gridlines{
  position: absolute;
  inset: 10%;
  border-radius: 50%;
  background:
    conic-gradient(from 0deg,
      rgba(127,127,127,.10) 0deg 1deg,
      transparent 1deg 30deg
    );
  opacity: .55;
  filter: saturate(.9);
}

.pointer{
  position: absolute;
  inset: 0;
  transform-origin: 50% 50%;
  display: grid;
  place-items: center;
}

.arrow{
  width: 46%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary2));
  position: relative;
}

.arrow::after{
  content: "";
  position: absolute;
  right: -2px;
  top: 50%;
  transform: translateY(-50%);
  border-left: 10px solid var(--primary2);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  filter: drop-shadow(0 8px 12px rgba(0,0,0,.12));
}

.hub{
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary2);
  box-shadow: 0 10px 25px rgba(79,70,229,.25);
}

.previewCaption{
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
}

.captionLine{
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 0;
}

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

.exampleRow{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.footer{
  margin-top: 14px;
  color: var(--muted);
  font-size: 13px;
  padding: 0 2px;
}