:root{
    --nsu-green:#006633;
    --nsu-green-dark:#004d26;
    --nsu-gold:#D4AF37;
    --nsu-bg:#F4F7F6;
    --nsu-card:#FFFFFF;
    --nsu-border:#D8E2D9;
    --nsu-text:#1B1B1B;
    --nsu-muted:#5D6B62;
    --nsu-danger:#B42318;
    --nsu-warning:#B8860B;
    --nsu-success:#067647;
}

*{
    box-sizing:border-box;
}

body{
    margin:0;
    font-family:Arial, Helvetica, sans-serif;
    background:var(--nsu-bg);
    color:var(--nsu-text);
}

.topbar{
    background:var(--nsu-green);
    color:#fff;
    padding:18px 24px;
    border-bottom:5px solid var(--nsu-gold);
    box-shadow:0 2px 10px rgba(0,0,0,.08);
}

.topbar h1{
    margin:0;
    font-size:28px;
    font-weight:700;
}

.topbar .subtitle{
    margin-top:6px;
    font-size:14px;
    color:#f4e7a1;
}

.container{
    max-width:1280px;
    margin:28px auto;
    padding:0 16px 40px;
}

.card{
    background:var(--nsu-card);
    border:1px solid var(--nsu-border);
    border-radius:14px;
    box-shadow:0 10px 24px rgba(0,0,0,.06);
    overflow:hidden;
    margin-bottom:20px;
}

.card h2,
.card h3{
    margin-top:0;
}

.card-header{
    background:#F8FBF8;
    border-bottom:1px solid var(--nsu-border);
    padding:18px 22px;
}

.card-header h2,
.card-header h3{
    margin:0;
    color:var(--nsu-green);
}

.card-body{
    padding:22px;
}

.grid{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));
    gap:14px;
}

.form-group{
    margin-bottom:14px;
}

label{
    display:block;
    margin-bottom:6px;
    font-weight:700;
    color:var(--nsu-green);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="file"],
select,
textarea{
    width:100%;
    padding:10px 12px;
    border:1px solid #C9D6CB;
    border-radius:8px;
    background:#fff;
    color:var(--nsu-text);
}

input:focus,
select:focus,
textarea:focus{
    outline:none;
    border-color:var(--nsu-green);
    box-shadow:0 0 0 3px rgba(0,102,51,.12);
}

.btn,
button,
a.btn{
    display:inline-block;
    background:var(--nsu-green);
    color:#fff;
    text-decoration:none;
    border:none;
    border-radius:10px;
    padding:10px 16px;
    font-weight:700;
    cursor:pointer;
    transition:.2s ease;
}

.btn:hover,
button:hover,
a.btn:hover{
    background:var(--nsu-green-dark);
}

.btn-secondary{
    background:#6B7280;
}

.btn-secondary:hover{
    background:#4B5563;
}

.btn-warning{
    background:var(--nsu-warning);
}

.btn-warning:hover{
    background:#8E6A0A;
}

.btn-danger{
    background:var(--nsu-danger);
}

.btn-danger:hover{
    background:#8F1D14;
}

.msg{
    padding:12px 14px;
    border-radius:10px;
    margin-bottom:16px;
    font-weight:600;
}

.msg-ok{
    background:#ECFDF3;
    color:var(--nsu-success);
    border:1px solid #ABEFC6;
}

.msg-err{
    background:#FEF3F2;
    color:var(--nsu-danger);
    border:1px solid #FECDCA;
}

table{
    width:100%;
    border-collapse:collapse;
    background:#fff;
}

th, td{
    padding:11px 10px;
    border-bottom:1px solid #E7ECE8;
    text-align:left;
    vertical-align:top;
}

th{
    background:#F7FBF8;
    color:#163524;
    font-weight:700;
}

tr:hover td{
    background:#FAFCFA;
}

.small{
    font-size:12px;
    color:var(--nsu-muted);
}

.section-title{
    color:var(--nsu-green);
    border-left:5px solid var(--nsu-gold);
    padding-left:10px;
    margin-bottom:14px;
    font-weight:700;
}