/* ============================================================
   School Management System - Admin theme
   Palette: ink navy + parchment + brass. Institutional/registry feel.
   ============================================================ */
:root{
  --ink:#16233a;          /* deep navy */
  --ink-2:#1f3252;
  --parchment:#f6f3ec;    /* warm paper */
  --paper:#fffdf8;
  --brass:#b8862d;        /* muted gold */
  --brass-soft:#e7d3a1;
  --line:#dcd6c8;
  --text:#243044;
  --muted:#6b7385;
  --green:#2f7a52;
  --red:#b23b3b;
  --amber:#b5842b;
  --shadow:0 1px 2px rgba(20,30,50,.06),0 4px 14px rgba(20,30,50,.05);
  --radius:8px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Segoe UI",-apple-system,Roboto,Helvetica,Arial,sans-serif;
  background:var(--parchment);color:var(--text);font-size:14px;line-height:1.5;
}
a{color:var(--ink-2);text-decoration:none}
a:hover{text-decoration:underline}

.layout{display:flex;min-height:100vh}

/* ---- Sidebar ---- */
.sidebar{
  width:230px;flex-shrink:0;background:var(--ink);color:#cdd6e6;
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh;
}
.brand{padding:20px 18px;border-bottom:1px solid rgba(255,255,255,.08);text-align:center}
.brand-logo{max-height:52px;max-width:120px;margin-bottom:8px;border-radius:6px;background:#fff;padding:4px}
.brand-title{font-weight:700;color:#fff;font-size:15px;letter-spacing:.3px}
.brand-slogan{font-size:11px;color:var(--brass-soft);margin-top:2px;font-style:italic}
.nav{display:flex;flex-direction:column;padding:10px 0;overflow-y:auto}
.nav-item{
  display:flex;align-items:center;gap:10px;padding:10px 18px;color:#c3ccdd;
  font-size:13.5px;border-left:3px solid transparent;
}
.nav-item:hover{background:rgba(255,255,255,.05);text-decoration:none;color:#fff}
.nav-item.active{background:var(--ink-2);border-left-color:var(--brass);color:#fff;font-weight:600}
.nav-item .ico{width:16px;text-align:center;color:var(--brass-soft)}

/* ---- Main ---- */
.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{
  display:flex;justify-content:space-between;align-items:center;
  background:var(--paper);border-bottom:1px solid var(--line);padding:12px 24px;
  position:sticky;top:0;z-index:5;
}
.topbar-title{font-weight:700;font-size:16px;color:var(--ink)}
.topbar-user{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:10px}
.logout{color:var(--red);font-weight:600}
.badge{padding:2px 9px;border-radius:20px;font-size:11px;font-weight:700;color:#fff}
.role-admin{background:var(--ink-2)} .role-teacher{background:var(--green)} .role-accountant{background:var(--brass)}

.content{padding:22px 24px;flex:1}
.footer{padding:14px 24px;border-top:1px solid var(--line);color:var(--muted);font-size:12px;text-align:center;background:var(--paper)}

/* ---- Flash ---- */
.flash{padding:11px 16px;border-radius:var(--radius);margin-bottom:16px;font-weight:600;border:1px solid}
.flash-success{background:#eaf5ee;color:var(--green);border-color:#bfe0cc}
.flash-error{background:#fbeaea;color:var(--red);border-color:#eecccc}
.flash-info{background:#eef2fa;color:var(--ink-2);border-color:#cdd8ee}

/* ---- Cards ---- */
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:20px}
.card-head{padding:14px 18px;border-bottom:1px solid var(--line);font-weight:700;color:var(--ink);display:flex;justify-content:space-between;align-items:center}
.card-body{padding:18px}

/* ---- Stat tiles ---- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:16px;margin-bottom:22px}
.stat{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.stat::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--brass)}
.stat .k{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.stat .v{font-size:26px;font-weight:800;color:var(--ink);margin-top:4px}
.stat.green::before{background:var(--green)} .stat.red::before{background:var(--red)} .stat.amber::before{background:var(--amber)}

/* ---- Tables ---- */
table.tbl{width:100%;border-collapse:collapse;background:var(--paper)}
.tbl th{background:#eef0f4;text-align:left;padding:10px 12px;font-size:12px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);border-bottom:1px solid var(--line)}
.tbl td{padding:10px 12px;border-bottom:1px solid var(--line);font-size:13.5px}
.tbl tr:hover td{background:#faf8f2}
.tbl .num{text-align:right;font-variant-numeric:tabular-nums}

/* ---- Forms ---- */
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.field{display:flex;flex-direction:column;gap:5px;margin-bottom:12px}
.field label{font-size:12.5px;font-weight:600;color:var(--muted)}
input,select,textarea{
  font-family:inherit;font-size:14px;padding:9px 11px;border:1px solid var(--line);
  border-radius:6px;background:#fff;color:var(--text);width:100%;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brass);box-shadow:0 0 0 3px rgba(184,134,45,.15)}
.section-label{font-weight:700;color:var(--ink);margin:18px 0 8px;padding-bottom:6px;border-bottom:2px solid var(--brass-soft)}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:6px;border:1px solid transparent;
  font-weight:600;font-size:13.5px;cursor:pointer;background:var(--ink);color:#fff}
.btn:hover{background:var(--ink-2);text-decoration:none}
.btn-brass{background:var(--brass)} .btn-brass:hover{background:#a2761f}
.btn-green{background:var(--green)} .btn-green:hover{background:#256341}
.btn-red{background:var(--red)} .btn-red:hover{background:#983131}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)} .btn-ghost:hover{background:#f2efe8}
.btn-sm{padding:5px 10px;font-size:12px}

/* ---- Pills / status ---- */
.pill{padding:2px 9px;border-radius:20px;font-size:11px;font-weight:700}
.pill-paid{background:#eaf5ee;color:var(--green)}
.pill-unpaid{background:#fbeaea;color:var(--red)}
.pill-partial{background:#fdf3e2;color:var(--amber)}
.pill-active{background:#eaf5ee;color:var(--green)}

.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:end;margin-bottom:16px}
.toolbar .field{margin-bottom:0}
.right{margin-left:auto}
.muted{color:var(--muted)}
.text-center{text-align:center}

/* ---- Login ---- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--ink) 0%,var(--ink-2) 100%);padding:20px}
.login-card{background:var(--paper);border-radius:12px;box-shadow:0 20px 60px rgba(0,0,0,.3);
  width:100%;max-width:400px;padding:34px;border-top:5px solid var(--brass)}
.login-card h1{margin:0 0 4px;font-size:20px;color:var(--ink)}
.login-card .sub{color:var(--muted);font-size:13px;margin-bottom:22px}

/* ---- Print ---- */
@media print{
  .sidebar,.topbar,.footer,.no-print{display:none!important}
  .content{padding:0}
  body{background:#fff}
  .card{box-shadow:none;border:1px solid #999}
}

@media(max-width:820px){
  .sidebar{position:fixed;left:-230px;z-index:50;transition:left .2s}
  .sidebar.open{left:0}
}