:root{
  --red:#e2001a;
  --red-dark:#b60016;
  --ink:#2b2b2b;
  --line:#c9c9c9;
  --bg:#f4f5f7;
  --card:#ffffff;
  --radius:6px;
  --shadow:0 1px 3px rgba(0,0,0,.14);
}

*{box-sizing:border-box}
/* L'attribut HTML "hidden" doit toujours l'emporter sur les display:flex ci-dessous */
[hidden]{display:none !important}
html,body{margin:0}
body{
  font-family:"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
}

/* ---------------------------------------------------------- LOGIN ------- */
.login-screen{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  padding:24px;
  background:linear-gradient(135deg,#f4f5f7 0%,#e9ebef 100%);
}
.login-card{
  width:100%;max-width:380px;background:var(--card);
  border-radius:12px;box-shadow:0 10px 40px rgba(0,0,0,.14);
  padding:32px 30px 26px;display:flex;flex-direction:column;gap:14px;
  border-top:6px solid var(--red);
}
.login-badge{
  align-self:flex-start;background:var(--red);color:#fff;font-weight:800;
  letter-spacing:.5px;padding:6px 12px;border-radius:4px;font-size:14px;
}
.login-title{margin:6px 0 0;font-size:22px}
.login-sub{margin:0 0 6px;color:#666;font-size:14px}
.login-card label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:#444}
.login-card input{
  padding:11px 12px;border:1px solid var(--line);border-radius:var(--radius);
  font-size:15px;font-weight:400;
}
.login-card input:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(226,0,26,.12)}
.login-error{background:#fdecec;color:#b60016;border:1px solid #f5c2c2;
  padding:9px 12px;border-radius:var(--radius);font-size:13px;margin:0}
.login-hint{color:#999;font-size:12px;text-align:center;margin:2px 0 0}

.btn-primary{
  background:var(--red);color:#fff;border:0;padding:12px;border-radius:var(--radius);
  font-size:15px;font-weight:700;cursor:pointer;transition:background .15s;
}
.btn-primary:hover{background:var(--red-dark)}
.btn-primary:disabled{opacity:.6;cursor:default}

/* --------------------------------------------------------- TOPBAR ------- */
.topbar{
  background:var(--red);color:#fff;display:flex;align-items:center;
  justify-content:space-between;padding:0 22px;height:78px;gap:16px;
  box-shadow:var(--shadow);position:sticky;top:0;z-index:5;
}
.brand{display:flex;align-items:center;gap:14px;min-width:0}
.brand-logo{
  width:54px;height:54px;border:2px solid #fff;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:12px;background:rgba(255,255,255,.08);
  background-size:cover;background-position:center;flex:none;
}
.brand-title{font-size:26px;font-weight:800;letter-spacing:1px}
.topbar-right{display:flex;align-items:center;gap:12px}
.search{
  padding:8px 12px;border:0;border-radius:20px;font-size:14px;min-width:220px;
}
.user-chip{font-size:13px;opacity:.95}
.btn-ghost{
  background:rgba(255,255,255,.15);color:#fff;border:1px solid rgba(255,255,255,.5);
  padding:7px 12px;border-radius:var(--radius);cursor:pointer;font-size:13px;
}
.btn-ghost:hover{background:rgba(255,255,255,.28)}

/* ---------------------------------------------------------- CHART ------- */
.chart{max-width:1600px;margin:0 auto;padding:26px 22px 60px}
.direction{
  width:520px;max-width:90%;margin:6px auto 0;background:var(--card);
  border:1px solid #d0d0d0;border-radius:var(--radius);box-shadow:var(--shadow);
  padding:14px 18px;text-align:center;position:relative;
}
.direction-title{font-size:20px;font-weight:700}
.direction-sub{font-size:13px;color:#666;font-style:italic;margin-top:2px}

/* trait vertical sous la Direction */
.columns{
  position:relative;margin-top:34px;
  display:grid;gap:18px;
  grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
}
.columns::before{                     /* barre horizontale de liaison */
  content:"";position:absolute;top:-18px;left:5%;right:5%;height:2px;background:var(--line);
}
.direction::after{                    /* trait Direction -> barre */
  content:"";position:absolute;bottom:-34px;left:50%;width:2px;height:16px;
  background:var(--line);transform:translateX(-50%);
}

.column{display:flex;flex-direction:column;gap:10px;position:relative}
.column::before{                      /* petit trait barre -> colonne */
  content:"";position:absolute;top:-18px;left:50%;width:2px;height:18px;
  background:var(--line);transform:translateX(-50%);
}
.col-head{
  color:#fff;font-weight:700;text-align:center;padding:14px 12px;
  border-radius:var(--radius);box-shadow:var(--shadow);line-height:1.25;
  font-size:15px;
}
.box{
  color:#fff;text-align:center;padding:14px 12px;border-radius:var(--radius);
  box-shadow:var(--shadow);cursor:pointer;line-height:1.3;font-size:14px;
  transition:transform .1s,filter .1s;border:0;
}
.box:hover{filter:brightness(1.06);transform:translateY(-1px)}
.box:active{transform:translateY(0)}
.box.sub{margin-left:14px;font-size:13px;opacity:.96}      /* niveaux profonds */
.box.hidden{display:none}
.column.dim{opacity:.25}

.loading{grid-column:1/-1;text-align:center;color:#888;padding:40px}
.empty-note{grid-column:1/-1;text-align:center;color:#a33;padding:30px}

/* ---------------------------------------------------------- MODALE ------ */
.modal{position:fixed;inset:0;z-index:20;display:flex;align-items:center;justify-content:center;padding:20px}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.45)}
.modal-box{
  position:relative;background:#fff;border-radius:10px;width:100%;max-width:560px;
  max-height:82vh;display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.3);
  overflow:hidden;
}
.modal-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;color:#fff;
}
.modal-head h2{margin:0;font-size:18px}
.modal-x{background:none;border:0;color:#fff;font-size:26px;line-height:1;cursor:pointer;opacity:.9}
.modal-x:hover{opacity:1}
.modal-body{padding:8px 0;overflow:auto}

.member{
  display:flex;flex-direction:column;gap:2px;padding:12px 20px;
  border-bottom:1px solid #eee;
}
.member:last-child{border-bottom:0}
.member .m-name{font-weight:600}
.member .m-meta{font-size:13px;color:#666;display:flex;gap:14px;flex-wrap:wrap}
.member .m-meta a{color:#0a66c2;text-decoration:none}
.member-empty{padding:26px 20px;text-align:center;color:#888}
.member-count{padding:10px 20px;color:#888;font-size:13px;border-bottom:1px solid #eee}

@media (max-width:640px){
  .brand-title{font-size:20px}
  .search{min-width:130px}
  .topbar{height:auto;padding:12px 14px;flex-wrap:wrap}
}