:root {
  --bleu: #2563eb;
  --bleu-d: #1d4ed8;
  --bg: #f8fafc;
  --txt: #0f172a;
  --muted: #64748b;
  --bord: #e2e8f0;
  --ok: #16a34a;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--txt);
  line-height: 1.5;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 24px 18px 60px; }
h1 { font-size: 24px; margin: 0 0 6px; }
h2 { font-size: 18px; margin: 24px 0 10px; }
.sub { color: var(--muted); margin: 0 0 20px; }
.card {
  background: #fff;
  border: 1px solid var(--bord);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
label { display: block; font-weight: 600; font-size: 14px; margin: 12px 0 4px; }
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--bord);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  background: #fff;
}
input:focus, select:focus { outline: 2px solid var(--bleu); border-color: var(--bleu); }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 120px; }
button, .btn {
  display: inline-block;
  background: var(--bleu);
  color: #fff;
  border: 1px solid var(--bleu);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}
button:hover, .btn:hover { background: var(--bleu-d); }
.btn.alt { background: #fff; color: var(--bleu); }
.btn.alt:hover { background: #eff6ff; }
.btn.sm { padding: 6px 10px; font-size: 13px; }
.muted { color: var(--muted); font-size: 14px; }
.creneau-line { display: flex; gap: 8px; align-items: flex-end; margin-bottom: 8px; }
.creneau-line > * { flex: 1; }
.creneau-line .del { flex: 0 0 auto; }
.del { background:#fff; color:#dc2626; border:1px solid #fecaca; }
.del:hover { background:#fef2f2; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--bord); font-size: 14px; }
th { color: var(--muted); font-weight: 600; }
.badge { display:inline-block; background:#eff6ff; color:var(--bleu); border-radius:999px;
  padding:2px 10px; font-size:13px; font-weight:600; }
.badge.zero { background:#f1f5f9; color:var(--muted); }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background:#0f172a; color:#fff; padding:12px 18px; border-radius:10px; font-size:14px;
  opacity:0; transition:opacity .2s; pointer-events:none; max-width:90%; }
.toast.show { opacity: 1; }
.toast.ok { background: var(--ok); }
.toast.err { background:#dc2626; }
.link-box { display:flex; gap:8px; margin:6px 0; }
.link-box input { font-family: monospace; font-size:13px; }
canvas { touch-action: none; width: 100%; height: 200px; background:#fff;
  border: 2px dashed #cbd5e1; border-radius: 10px; display:block; }
.sig-actions { display:flex; gap:8px; margin-top:8px; }
.hidden { display: none !important; }
.success-box { text-align:center; padding:30px 16px; }
.success-box .check { font-size:48px; }