:root{
  --indigo:#1C2541;
  --indigo-light:#2A3A63;
  --gold:#E3A857;
  --gold-deep:#C88A38;
  --green:#3C6E47;
  --green-light:#557F5E;
  --parchment:#F5EFE2;
  --parchment-dark:#EAE1CC;
  --charcoal:#2A2A28;
  --clay:#B5533C;
  --line:#DDD2B8;
  --radius:10px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--parchment);
  color:var(--charcoal);
  font-family:'Work Sans', sans-serif;
  font-size:15px;
  line-height:1.5;
}
h1,h2,h3,h4{
  font-family:'Fraunces', serif;
  margin:0 0 .4em 0;
  color:var(--indigo);
  font-weight:600;
}
.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--green);
  font-weight:500;
}
a{color:inherit;text-decoration:none;}
button{font-family:'Work Sans',sans-serif;cursor:pointer;}
::selection{background:var(--gold);color:var(--indigo);}

/* Diamond pattern strip — signature motif */
.motif-strip{
  height:10px;
  width:100%;
  background-image:
    linear-gradient(45deg, var(--gold) 25%, transparent 25%, transparent 75%, var(--gold) 75%),
    linear-gradient(45deg, var(--gold) 25%, transparent 25%, transparent 75%, var(--gold) 75%);
  background-size:12px 12px;
  background-position:0 0, 6px 6px;
  opacity:.55;
}

/* Layout shell */
.app{
  display:flex;
  min-height:100vh;
}

/* Sidebar */
.sidebar{
  width:240px;
  flex-shrink:0;
  background:var(--indigo);
  color:#EFE9DA;
  display:flex;
  flex-direction:column;
  position:sticky;
  top:0;
  height:100vh;
}
.brand{
  padding:24px 20px 18px 20px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.brand .mark{
  font-family:'Fraunces',serif;
  font-size:22px;
  font-weight:700;
  color:#fff;
  letter-spacing:-.01em;
}
.brand .mark span{color:var(--gold);}
.brand .sub{
  font-family:'IBM Plex Mono',monospace;
  font-size:10.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:#9AA5C2;
  margin-top:4px;
}
nav.tabs{
  padding:14px 12px;
  display:flex;
  flex-direction:column;
  gap:3px;
  flex:1;
  overflow-y:auto;
}
nav.tabs button, nav.tabs a.tab-btn{
  all:unset;
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:8px;
  font-size:13.5px;
  color:#C7CEE3;
  cursor:pointer;
  transition:background .15s, color .15s;
}
nav.tabs button .num, nav.tabs a.tab-btn .num{
  font-family:'IBM Plex Mono',monospace;
  font-size:10.5px;
  color:#6F7BA0;
  width:16px;
}
nav.tabs button:hover, nav.tabs a.tab-btn:hover{background:rgba(255,255,255,.06); color:#fff;}
nav.tabs button.active, nav.tabs a.tab-btn.active{
  background:var(--gold);
  color:var(--indigo);
  font-weight:600;
}
nav.tabs button.active .num, nav.tabs a.tab-btn.active .num{color:var(--indigo);opacity:.6;}

.sidebar-foot{
  padding:16px 20px 20px 20px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:12px;
  color:#8B96B8;
}

/* Main */
main{
  flex:1;
  min-width:0;
}
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 34px;
  border-bottom:1px solid var(--line);
  background:#FBF8F0;
  position:sticky;
  top:0;
  z-index:5;
}
.topbar .path{
  font-family:'IBM Plex Mono',monospace;
  font-size:11.5px;
  color:var(--green);
  text-transform:uppercase;
  letter-spacing:.08em;
}
.user-chip{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
}
.role-badge{
  font-family:'IBM Plex Mono',monospace;
  font-size:10px;
  padding:2px 8px;
  border-radius:12px;
  background:var(--indigo);
  color:var(--gold);
  text-transform:uppercase;
}
.avatar{
  width:32px;height:32px;border-radius:50%;
  background:var(--green);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:'Fraunces',serif;font-weight:600;font-size:13px;
}

.logout-link{
  font-size:12.5px;
  color:var(--clay);
  font-weight:600;
  margin-left:12px;
}
.logout-link:hover{text-decoration:underline;}

.view{
  display:none;
  padding:36px 40px 60px 40px;
  max-width:1120px;
}
.view.active{display:block;}

/* Hero (Accueil) */
.hero{
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:40px;
  align-items:center;
  padding-bottom:30px;
}
.hero h1{font-size:38px;line-height:1.08;max-width:520px;}
.hero p.lead{font-size:15.5px;color:#54524A;max-width:480px;margin-top:14px;}
.stat-row{display:flex;gap:26px;margin-top:26px;}
.stat{border-left:2px solid var(--gold);padding-left:12px;}
.stat .n{font-family:'Fraunces',serif;font-size:26px;font-weight:700;color:var(--indigo);}
.stat .l{font-family:'IBM Plex Mono',monospace;font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:#7A7568;}
.hero-card{
  background:var(--indigo);
  border-radius:var(--radius);
  padding:26px;
  color:#EFE9DA;
  position:relative;
  overflow:hidden;
}
.hero-card .eyebrow{color:var(--gold);}
.hero-card h3{color:#fff;font-size:20px;margin-top:6px;}
.hero-card p{font-size:13px;color:#B9C0D6;}
.btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 18px;
  border-radius:7px;
  border:none;
  font-size:13.5px;
  font-weight:600;
  text-decoration:none;
  transition:transform .12s ease, box-shadow .12s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn:focus-visible, button:focus-visible, a:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}
.btn-gold{background:var(--gold); color:var(--indigo);}
.btn-outline{background:transparent;border:1px solid rgba(255,255,255,.35);color:#fff;}
.btn-green{background:var(--green);color:#fff;}
.btn-clay{background:var(--clay);color:#fff;}
.btn-ghost{background:var(--parchment-dark);color:var(--indigo);}

section.block{margin-top:38px;}
section.block .head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:16px;}
section.block .head h2{font-size:21px;}

/* Cards grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;}
.card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:18px;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.card .tag{
  align-self:flex-start;
  font-family:'IBM Plex Mono',monospace;
  font-size:10px;
  text-transform:uppercase;
  letter-spacing:.06em;
  padding:3px 8px;
  border-radius:20px;
  background:var(--parchment-dark);
  color:var(--green);
}
.card .tag.live{background:#FBEAE4;color:var(--clay);}
.card h4{font-size:15.5px;margin:2px 0 0 0;}
.card .meta{font-size:12.5px;color:#8A8574;font-family:'IBM Plex Mono',monospace;}
.card p.desc{font-size:13px;color:#54524A;flex:1;}
.card .footer-row{display:flex;justify-content:space-between;align-items:center;margin-top:6px;}

/* Progress path (modules) */
.path-track{
  display:flex;
  align-items:center;
  overflow-x:auto;
  padding:10px 4px 22px 4px;
  gap:0;
}
.path-node{
  flex-shrink:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  width:150px;
  position:relative;
}
.path-node .dot{
  width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:'IBM Plex Mono',monospace;font-size:12px;font-weight:600;
  background:#fff;border:2px solid var(--line);color:#9C9787;
  z-index:1;
}
.path-node.done .dot{background:var(--green);border-color:var(--green);color:#fff;}
.path-node.current .dot{background:var(--gold);border-color:var(--gold-deep);color:var(--indigo);}
.path-node .lbl{font-size:11.5px;text-align:center;margin-top:8px;color:var(--charcoal);max-width:120px;}
.path-node .connector{
  position:absolute;
  top:17px;left:calc(-75px + 17px);
  width:150px;height:2px;
  background:var(--line);
}
.path-node.done .connector{background:var(--green);}
.path-node:first-child .connector{display:none;}

.module-detail{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;margin-top:6px;
}
.module-detail ol{margin:10px 0 0 0;padding-left:18px;}
.module-detail li{font-size:13.5px;margin-bottom:6px;color:#403E38;}

/* Table-ish list (exercices) */
.list-row{
  display:grid;
  grid-template-columns:2.2fr 1fr 1fr 1fr auto;
  gap:14px;
  align-items:center;
  padding:14px 16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:8px;
  margin-bottom:10px;
  font-size:13.5px;
}
.list-row.header-row{
  background:transparent;border:none;
  font-family:'IBM Plex Mono',monospace;font-size:10.5px;text-transform:uppercase;
  letter-spacing:.05em;color:#8A8574;padding:0 16px;margin-bottom:6px;
}
.pill{
  font-family:'IBM Plex Mono',monospace;font-size:10.5px;padding:3px 9px;border-radius:20px;
  display:inline-block;width:fit-content;
}
.pill.a-rendre{background:#FBEAE4;color:var(--clay);}
.pill.corrige{background:#E4EFE6;color:var(--green);}
.pill.soumis{background:#F0E7D2;color:var(--gold-deep);}

.upload-box{
  border:1.5px dashed var(--line);
  border-radius:8px;
  padding:22px;
  text-align:center;
  color:#8A8574;
  font-size:13px;
  margin-top:18px;
  background:#FBF8F0;
}

/* Espace participant */
.profile-head{
  display:flex;
  gap:20px;
  align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 26px;
}
.avatar-lg{
  width:64px;height:64px;border-radius:50%;
  background:var(--green);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:'Fraunces',serif;font-size:24px;font-weight:700;
  flex-shrink:0;
}
.progress-bar{
  height:8px;background:var(--parchment-dark);border-radius:6px;overflow:hidden;margin-top:6px;
}
.progress-bar .fill{height:100%;background:var(--green);}
.badge-row{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap;}
.badge{
  display:flex;align-items:center;gap:7px;
  background:var(--parchment-dark);
  padding:7px 12px;border-radius:20px;font-size:12px;color:var(--indigo);
}
.badge .ic{width:16px;height:16px;border-radius:50%;background:var(--gold);flex-shrink:0;}

/* Visio */
.session-row{
  display:flex;justify-content:space-between;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 20px;margin-bottom:12px;
}
.session-row .when{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--green);}
.live-dot{
  width:8px;height:8px;border-radius:50%;background:var(--clay);display:inline-block;
  animation:pulse 1.6s infinite;
  margin-right:6px;
}
@keyframes pulse{0%{opacity:1;}50%{opacity:.35;}100%{opacity:1;}}

.note-callout{
  margin-top:30px;
  border-left:3px solid var(--gold);
  background:#FBF8F0;
  padding:14px 18px;
  font-size:12.5px;
  color:#6B6656;
  border-radius:0 8px 8px 0;
}

/* Auth Cards & Inputs */
.auth-container{
  display:flex;align-items:center;justify-content:center;
  min-height:100vh;padding:20px;
}
.auth-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  width:100%;
  max-width:440px;
  padding:36px;
  box-shadow:0 12px 30px rgba(0,0,0,0.06);
}
.auth-card h2{margin-bottom:6px;font-size:26px;}
.auth-card p.sub{font-size:13.5px;color:#666;margin-bottom:24px;}
.form-group{margin-bottom:18px;}
.form-group label{
  display:block;font-size:12px;font-weight:600;text-transform:uppercase;
  letter-spacing:.05em;color:var(--indigo);margin-bottom:6px;
}
.form-group input, .form-group select, .form-group textarea{
  width:100%;padding:11px 14px;border:1px solid var(--line);
  border-radius:8px;font-family:inherit;font-size:14px;
  background:#FBF8F0;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus{
  outline:none;border-color:var(--gold);background:#fff;
}
.password-wrapper{
  position:relative;
  display:flex;
  align-items:center;
}
.password-wrapper input{
  padding-right:42px;
}
.toggle-password{
  position:absolute;
  right:10px;
  background:none;
  border:none;
  color:#8A8574;
  cursor:pointer;
  padding:4px;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:color .15s ease;
}
.toggle-password:hover{
  color:var(--indigo);
}

/* Data Tables for Admin */
.data-table{
  width:100%;border-collapse:collapse;background:#fff;
  border:1px solid var(--line);border-radius:8px;overflow:hidden;
  font-size:13.5px;margin-top:14px;
}
.data-table th{
  background:#FBF8F0;padding:12px 16px;text-align:left;
  font-family:'IBM Plex Mono',monospace;font-size:11px;
  text-transform:uppercase;color:#8A8574;border-bottom:1px solid var(--line);
}
.data-table td{
  padding:12px 16px;border-bottom:1px solid var(--line);
  vertical-align:middle;
}
.data-table tr:last-child td{border-bottom:none;}
.data-table tr:hover td{background:#FDFBF7;}

/* Alerts */
.alert{
  padding:12px 16px;border-radius:8px;font-size:13.5px;margin-bottom:20px;
}
.alert-success{background:#E4EFE6;color:var(--green);border:1px solid #C4DFC8;}
.alert-error{background:#FBEAE4;color:var(--clay);border:1px solid #F5C6BA;}

@media (max-width:900px){
  .sidebar{position:fixed;transform:translateX(-100%);transition:transform .2s;z-index:50;box-shadow:0 0 40px rgba(0,0,0,.3);}
  .sidebar.open{transform:translateX(0);}
  .hero{grid-template-columns:1fr;}
  .view{padding:24px 18px 50px 18px;}
  .menu-btn{display:flex !important;}
  .list-row{grid-template-columns:1fr;gap:6px;}
  .list-row.header-row{display:none;}
}
.menu-btn{
  display:none;
  align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:8px;border:1px solid var(--line);
  background:#fff;
}