:root{
    --uac-blue:#0b3b8c;
    --uac-blue-dark:#082968;
    --uac-blue-light:#e8efff;
    --uac-gold:#c9a227;
    --bg:#f5f7fb;
    --card:#ffffff;
    --text:#1c2536;
    --muted:#6b7585;
    --border:#e3e7ef;
    --shadow:0 1px 2px rgba(15,30,60,.04), 0 4px 16px rgba(15,30,60,.06);
    --radius:14px;
}
*{box-sizing:border-box}
html,body{height:100%}
body.app-body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;font-size:14.5px}

/* Shell */
.app-shell{display:flex;min-height:100vh}
.app-main{flex:1;display:flex;flex-direction:column;min-width:0}

/* Sidebar */
.sidebar{width:264px;background:linear-gradient(180deg,var(--uac-blue) 0%,var(--uac-blue-dark) 100%);color:#dfe7f7;display:flex;flex-direction:column;padding:22px 14px;position:sticky;top:0;height:100vh}
.sidebar-brand{display:flex;align-items:center;gap:12px;padding:4px 8px 22px}
.brand-mark{width:42px;height:42px;border-radius:10px;background:var(--uac-gold);color:#1a1a1a;font-weight:800;display:grid;place-items:center;letter-spacing:.5px}
.brand-title{color:#fff;font-weight:700;font-size:15px;line-height:1.1}
.brand-sub{color:#a9bce3;font-size:11.5px;margin-top:3px}
.sidebar-nav{display:flex;flex-direction:column;gap:2px;margin-top:4px}
.sidebar-nav .nav-link{color:#cfd9ef;border-radius:9px;padding:9px 12px;display:flex;align-items:center;gap:10px;font-size:13.5px;text-decoration:none}
.sidebar-nav .nav-link:hover{background:rgba(255,255,255,.08);color:#fff}
.sidebar-nav .nav-link.active{background:rgba(255,255,255,.14);color:#fff}
.nav-section{font-size:10.5px;letter-spacing:.12em;color:#7e93c2;text-transform:uppercase;margin:16px 12px 6px}

/* Topbar */
.topbar{display:flex;align-items:center;justify-content:space-between;background:#fff;padding:14px 24px;border-bottom:1px solid var(--border);gap:16px;position:sticky;top:0;z-index:10}
.topbar-title{font-weight:600;color:var(--text);font-size:16px}
.topbar-right{display:flex;align-items:center;gap:14px}
.user-chip{display:flex;align-items:center;gap:10px}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--uac-blue);color:#fff;font-weight:700;display:grid;place-items:center}
.user-name{font-weight:600;font-size:13.5px;line-height:1}
.user-role{color:var(--muted);font-size:11.5px;margin-top:3px}
.sidebar-toggle{font-size:22px;padding:0}

/* Cards */
.card{border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-header{background:#fff;border-bottom:1px solid var(--border);font-weight:600}

/* Stat cards */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;margin-bottom:22px}
.stat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px 18px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.stat-card .label{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.06em;font-weight:600}
.stat-card .value{font-size:30px;font-weight:700;margin-top:6px;color:var(--text)}
.stat-card .icon{position:absolute;right:14px;top:14px;width:38px;height:38px;border-radius:10px;background:var(--uac-blue-light);color:var(--uac-blue);display:grid;place-items:center;font-size:18px}
.stat-card.success .icon{background:#e6f7ee;color:#157f3c}
.stat-card.warn .icon{background:#fff5e0;color:#a37800}
.stat-card.danger .icon{background:#fde8e8;color:#a32626}

/* Buttons */
.btn-primary{background:var(--uac-blue);border-color:var(--uac-blue)}
.btn-primary:hover{background:var(--uac-blue-dark);border-color:var(--uac-blue-dark)}
.btn-outline-primary{color:var(--uac-blue);border-color:var(--uac-blue)}
.btn-outline-primary:hover{background:var(--uac-blue);border-color:var(--uac-blue)}

/* Tables */
.table{margin-bottom:0}
.table thead th{background:#f7f9fd;color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid var(--border)}
.table tbody td{vertical-align:middle}
.badge.bg-secondary{background:#6c757d!important}
.badge.bg-info{background:#0d6efd!important;color:#fff!important}

/* Forms */
.form-label{font-weight:600;color:var(--text);font-size:13px}
.form-control,.form-select{border-color:var(--border);border-radius:9px;font-size:14px}
.form-control:focus,.form-select:focus{border-color:var(--uac-blue);box-shadow:0 0 0 .2rem rgba(11,59,140,.12)}
.section-title{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--uac-blue);margin:8px 0 14px;padding-bottom:8px;border-bottom:2px solid var(--uac-blue-light)}

/* Doublons sub-form */
.doublon-row{background:#f8faff;border:1px solid var(--border);border-radius:12px;padding:14px;margin-bottom:12px;position:relative;transition:opacity .2s, transform .2s}
.doublon-row.entering{opacity:0;transform:translateY(-4px)}
.doublon-row.leaving{opacity:0;transform:translateY(-4px)}
.doublon-row .remove-doublon{position:absolute;top:8px;right:8px}

/* Footer */
.app-footer{padding:14px 24px;background:#fff;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--muted)}

/* Auth */
body.auth-body{background:linear-gradient(135deg,var(--uac-blue) 0%,#031a4d 100%);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}
.auth-card{background:#fff;border-radius:18px;padding:36px 36px 32px;max-width:420px;width:100%;box-shadow:0 24px 60px rgba(0,0,0,.25)}
.auth-card .brand-mark{margin:0 auto 12px}
.auth-card h1{font-size:22px;text-align:center;margin-bottom:4px;color:var(--text)}
.auth-card .sub{text-align:center;color:var(--muted);font-size:13.5px;margin-bottom:24px}

/* Pagination */
.pagination .page-link{color:var(--uac-blue)}
.pagination .page-item.active .page-link{background:var(--uac-blue);border-color:var(--uac-blue)}

/* Responsive */
@media (max-width: 768px){
    .sidebar{position:fixed;z-index:1040;transform:translateX(-100%);transition:transform .25s}
    .sidebar.open{transform:translateX(0)}
    .app-main{margin-left:0}
}

/* Status badges */
.status-brouillon{background:#eef0f3;color:#444}
.status-soumise{background:#e0ebff;color:#0b3b8c}
.status-validee{background:#dff5e7;color:#157f3c}
.status-invalidee{background:#fde2e2;color:#a32626}
.status-pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:11.5px;font-weight:600;text-transform:uppercase;letter-spacing:.04em}