/* Ecriture & Rédaction — thème : fond blanc, accents indigo & or */
:root{--bg:#ffffff;--ink:#1f2937;--mut:#64748b;--acc:#4f46e5;--acc-dark:#312e81;--acc-soft:#eef2ff;--bd:#d7dbe8;--silver:#f6f7fb;--gold:#b45309}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7}
.wrap{max-width:860px;margin:0 auto;padding:20px}
header{background:linear-gradient(135deg,#312e81,#4f46e5);color:#fff;padding:34px 16px;text-align:center;border-bottom:4px solid #c9a227}
header h1{font-size:1.7rem;margin-bottom:8px}
header p{opacity:.92}
nav{background:#fff;border-bottom:1px solid var(--bd);padding:10px 16px;display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
nav a{color:var(--acc);text-decoration:none;font-weight:600;font-size:.92rem}
nav a:hover{text-decoration:underline}
h2{color:var(--acc-dark);font-size:1.35rem;margin:30px 0 12px;border-left:4px solid var(--acc);padding-left:10px}
h3{font-size:1.05rem;margin:18px 0 8px}
p{margin-bottom:14px}
ul,ol{margin:0 0 14px 22px}
li{margin-bottom:6px}
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.93rem}
th,td{border:1px solid var(--bd);padding:10px 12px;text-align:left}
th{background:var(--acc-soft);color:var(--acc-dark)}
tr:nth-child(even) td{background:var(--silver)}
a{color:var(--acc)}
.card{background:#fff;border:1px solid var(--bd);border-radius:12px;padding:18px;margin:16px 0;box-shadow:0 1px 3px rgba(30,27,75,.06)}
.btn{display:inline-block;background:var(--acc);color:#fff!important;text-decoration:none;padding:10px 18px;border-radius:8px;font-weight:600;cursor:pointer;border:none;font-size:.95rem}
.btn:hover{background:var(--acc-dark)}
.note{background:#f8fafc;border-left:4px solid #94a3b8;padding:12px 14px;border-radius:0 8px 8px 0;font-size:.92rem;color:#475569;margin:14px 0}
.warn{background:#fffbeb;border-left:4px solid #d97706;padding:12px 14px;border-radius:0 8px 8px 0;font-size:.92rem;color:#78350f;margin:14px 0}
.gold{background:#fffbeb;border-left:4px solid #c9a227;padding:12px 14px;border-radius:0 8px 8px 0;font-size:.92rem;color:#78350f;margin:14px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:16px 0}
.tile{background:#fff;border:1px solid var(--bd);border-radius:12px;padding:16px;border-top:3px solid var(--acc)}
.tile a{text-decoration:none;font-weight:600}
.tile a:hover{text-decoration:underline}
.tile p{font-size:.88rem;color:var(--mut);margin:6px 0 0}
.calc{background:var(--silver);border:1px solid var(--bd);border-radius:12px;padding:18px;margin:16px 0}
.calc label{display:block;font-weight:600;font-size:.9rem;margin:12px 0 4px}
.calc input,.calc select,.calc textarea{width:100%;padding:9px 10px;border:1px solid var(--bd);border-radius:8px;font-size:1rem;background:#fff;color:var(--ink);font-family:inherit}
.calc textarea{min-height:150px;resize:vertical}
.calc .row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.res{background:#fff;border:1px solid var(--acc);border-left:5px solid var(--acc);border-radius:12px;padding:18px;margin:16px 0}
.res .big{font-size:1.4rem;font-weight:800;color:var(--acc-dark)}
.res table{margin:8px 0}
.res th{width:55%}
details{background:var(--silver);border:1px solid var(--bd);border-radius:10px;padding:12px 16px;margin:10px 0}
details summary{font-weight:600;cursor:pointer;color:var(--acc-dark)}
details p{margin:10px 0 0;font-size:.93rem}
.checklist{list-style:none;margin:0 0 16px}
.checklist li{margin-bottom:10px;font-size:.95rem}
.checklist input{margin-right:8px;transform:scale(1.2);accent-color:var(--acc)}
footer{text-align:center;color:var(--mut);font-size:.85rem;padding:26px 0 14px;border-top:1px solid var(--bd);margin-top:36px;background:var(--silver)}
footer a{color:var(--acc)}
footer .links{max-width:860px;margin:0 auto 10px;display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
@media(max-width:600px){h1{font-size:1.35rem}header{padding:26px 14px}.calc .row{grid-template-columns:1fr}}