:root{
    --navy:#0f2545;
    --navy-2:#153463;
    --accent:#2f6fed;
    --bg:#f4f6fa;
    --line:#e3e8f1;
}
*{box-sizing:border-box}
body{background:var(--bg);font-family:"Segoe UI",system-ui,-apple-system,Arial,sans-serif;color:#1c2533}

/* ---------- Login ---------- */
.login-body{min-height:100vh;display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 60%,#1d4b95 100%)}
.login-card{background:#fff;border-radius:14px;padding:36px 34px;width:100%;max-width:400px;
    box-shadow:0 18px 50px rgba(0,0,0,.28)}
.login-brand{font-weight:800;letter-spacing:1.5px;font-size:1.15rem;margin-bottom:18px;color:var(--navy)}
.brand-mark{display:inline-flex;width:30px;height:30px;border-radius:8px;background:var(--accent);
    color:#fff;align-items:center;justify-content:center;font-weight:800;margin-right:8px}

/* ---------- Layout ---------- */
.app-shell{display:flex;min-height:100vh}
.sidebar{width:250px;background:var(--navy);color:#cbd6e8;flex-shrink:0;display:flex;flex-direction:column;
    position:fixed;top:0;bottom:0;left:0;z-index:1040;overflow-y:auto;transition:transform .2s ease}
.app-main{margin-left:250px;flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{height:58px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;
    gap:12px;padding:0 18px;position:sticky;top:0;z-index:1030}
.topbar-title{font-weight:600}
.topbar-user{margin-left:auto;display:flex;align-items:center;font-size:.875rem}
.app-content{padding:20px;flex:1}
.app-footer{padding:14px 20px;font-size:.75rem;color:#7a879b;border-top:1px solid var(--line);background:#fff}

/* ---------- Sidebar ---------- */
.brand{display:flex;align-items:center;gap:10px;padding:18px 18px 14px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand-text{font-weight:800;letter-spacing:1px;font-size:.95rem;color:#fff;line-height:1.1}
.brand-text small{display:block;font-weight:400;font-size:.62rem;letter-spacing:.4px;color:#8fa3c4}
.sidebar .nav{padding:12px 8px;gap:2px}
.sidebar .nav-link{color:#c2cee3;border-radius:8px;padding:9px 12px;font-size:.875rem;display:flex;
    align-items:center;gap:10px}
.sidebar .nav-link:hover{background:rgba(255,255,255,.07);color:#fff}
.sidebar .nav-link.active{background:var(--accent);color:#fff;font-weight:600}
.sidebar .nav-link i{font-size:1rem}
.nav-heading{padding:14px 14px 6px;font-size:.66rem;letter-spacing:1.2px;text-transform:uppercase;color:#7a8dad}
.sidebar-foot{margin-top:auto;padding:14px 18px;font-size:.7rem;color:#7a8dad;border-top:1px solid rgba(255,255,255,.08)}

/* ---------- Cards / stats ---------- */
.card{border:1px solid var(--line);border-radius:12px;box-shadow:0 1px 2px rgba(16,35,64,.04)}
.card-header{border-bottom:1px solid var(--line);border-radius:12px 12px 0 0!important}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;display:flex;
    gap:14px;align-items:center;height:100%}
.stat-icon{width:44px;height:44px;border-radius:10px;background:#eaf0fc;color:var(--accent);
    display:flex;align-items:center;justify-content:center;font-size:1.25rem}
.stat-label{font-size:.75rem;color:#6c7a90;text-transform:uppercase;letter-spacing:.4px}
.stat-value{font-size:1.15rem;font-weight:700;color:var(--navy)}

/* ---------- Buttons ---------- */
.btn-navy{background:var(--navy);border-color:var(--navy);color:#fff}
.btn-navy:hover,.btn-navy:focus{background:var(--navy-2);border-color:var(--navy-2);color:#fff}
.btn-outline-navy{border-color:var(--navy);color:var(--navy)}
.btn-outline-navy:hover{background:var(--navy);color:#fff}

/* ---------- Forms / tables ---------- */
.form-label{font-size:.8rem;font-weight:600;color:#3a475c;margin-bottom:.25rem}
.form-control,.form-select{font-size:.875rem}
.table>thead th{font-size:.72rem;text-transform:uppercase;letter-spacing:.4px;color:#6c7a90;
    background:#f8fafd;border-bottom:1px solid var(--line);white-space:nowrap}
.table>tbody td{font-size:.85rem}

/* ---------- Responsive ---------- */
@media (max-width: 991.98px){
    .sidebar{transform:translateX(-100%)}
    .sidebar.open{transform:translateX(0)}
    .app-main{margin-left:0}
}