:root{
  --bg:#f4f6fb; --surface:#ffffff; --ink:#1a2233; --muted:#6b7691;
  --line:#e6eaf2; --brand:#2f6df5; --brand-dark:#2050c9; --brand-soft:#eaf1ff;
  --ok:#128a5b; --ok-bg:#e5f6ee; --warn:#b7791f; --warn-bg:#fdf5e3;
  --bad:#c0392b; --bad-bg:#fdecea; --info:#2563a8; --info-bg:#e7f0fb;
  --radius:12px; --shadow:0 1px 3px rgba(20,30,60,.06),0 1px 2px rgba(20,30,60,.04);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--ink);font-size:14.5px;line-height:1.5}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{margin:0 0 .3em;font-weight:650;letter-spacing:-.01em}
h1{font-size:1.5rem}h2{font-size:1.15rem}h3{font-size:1rem}
.muted{color:var(--muted)}
.small{font-size:.82rem}

/* Layout shell */
.shell{display:flex;min-height:100vh}
.sidebar{width:240px;background:#141b2d;color:#cdd5e6;flex-shrink:0;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.sidebar .brand{padding:20px 22px;font-size:1.15rem;font-weight:700;color:#fff;display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(255,255,255,.07)}
.sidebar .brand .logo{width:28px;height:28px;background:var(--brand);border-radius:8px;display:grid;place-items:center;color:#fff;font-weight:800}
.nav{padding:12px 10px;flex:1;overflow-y:auto}
.nav a{display:flex;align-items:center;gap:11px;padding:10px 13px;border-radius:9px;color:#aeb8cf;font-weight:500;margin-bottom:2px}
.nav a:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none}
.nav a.active{background:var(--brand);color:#fff}
.nav a svg{width:18px;height:18px;flex-shrink:0}
.nav .section{font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;color:#5c6785;padding:16px 13px 6px}
.sidebar .foot{padding:14px 18px;border-top:1px solid rgba(255,255,255,.07);font-size:.8rem}

.main{flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{background:var(--surface);border-bottom:1px solid var(--line);padding:14px 26px;display:flex;
  align-items:center;justify-content:space-between;position:sticky;top:0;z-index:20}
.topbar .who{display:flex;align-items:center;gap:10px}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--brand-soft);color:var(--brand-dark);
  display:grid;place-items:center;font-weight:700}
.content{padding:26px;max-width:1200px;width:100%;margin:0 auto}
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:16px;flex-wrap:wrap}

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

/* Stat grid */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:22px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.stat .label{color:var(--muted);font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.stat .value{font-size:1.7rem;font-weight:750;margin-top:6px;letter-spacing:-.02em}
.stat .sub{font-size:.8rem;margin-top:4px}
.stat.accent{background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;border:0}
.stat.accent .label,.stat.accent .sub{color:rgba(255,255,255,.85)}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
@media(max-width:900px){.grid-2{grid-template-columns:1fr}}

/* Tables */
table.tbl{width:100%;border-collapse:collapse;background:var(--surface)}
.tbl th{text-align:left;font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);
  padding:12px 16px;border-bottom:1px solid var(--line);font-weight:700}
.tbl td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:middle}
.tbl tr:last-child td{border-bottom:0}
.tbl tr:hover td{background:#fafbfe}
.tbl .num{text-align:right;font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* Badges */
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.72rem;font-weight:700;letter-spacing:.02em}
.badge.ok{background:var(--ok-bg);color:var(--ok)}
.badge.warn{background:var(--warn-bg);color:var(--warn)}
.badge.bad{background:var(--bad-bg);color:var(--bad)}
.badge.info{background:var(--info-bg);color:var(--info)}
.badge.muted{background:#eef0f5;color:var(--muted)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:9px;font-weight:600;
  border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;font-size:.9rem;transition:.12s}
.btn:hover{text-decoration:none;border-color:#cfd6e6;background:#fbfcfe}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-dark);border-color:var(--brand-dark)}
.btn.danger{background:#fff;color:var(--bad);border-color:#f3c9c4}
.btn.danger:hover{background:var(--bad-bg)}
.btn.sm{padding:6px 11px;font-size:.82rem}
.btn.ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn-row{display:flex;gap:8px;flex-wrap:wrap}

/* Forms */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:2px}
.field.full{grid-column:1/-1}
.field label{font-weight:600;font-size:.85rem}
.field input,.field select,.field textarea{padding:10px 12px;border:1px solid var(--line);border-radius:9px;
  font-size:.92rem;font-family:inherit;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.field textarea{resize:vertical;min-height:80px}
.field .hint{font-size:.78rem;color:var(--muted)}

/* Flash */
.flash{padding:12px 16px;border-radius:9px;margin-bottom:18px;font-weight:500;border:1px solid transparent}
.flash.success{background:var(--ok-bg);color:var(--ok);border-color:#bfe6d3}
.flash.error{background:var(--bad-bg);color:var(--bad);border-color:#f3c9c4}

/* Auth pages */
.auth-wrap{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#1a2440,#2f6df5);padding:20px}
.auth-card{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.25);width:100%;max-width:420px;padding:34px}
.auth-card .brand{font-size:1.4rem;font-weight:750;text-align:center;margin-bottom:4px;display:flex;justify-content:center;align-items:center;gap:10px}
.auth-card .brand .logo{width:34px;height:34px;background:var(--brand);border-radius:9px;display:grid;place-items:center;color:#fff;font-weight:800}
.auth-card .tag{text-align:center;color:var(--muted);margin-bottom:24px}

/* Misc */
.empty{text-align:center;padding:50px 20px;color:var(--muted)}
.empty svg{width:46px;height:46px;opacity:.4;margin-bottom:10px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.chip{padding:7px 14px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-weight:600;font-size:.85rem;color:var(--muted)}
.chip.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.kv{display:grid;grid-template-columns:150px 1fr;gap:10px 16px}
.kv dt{color:var(--muted);font-weight:600}
.kv dd{margin:0}
.thumb{width:100%;height:150px;object-fit:cover;border-radius:10px 10px 0 0;background:#eef0f5}
.bars{display:flex;align-items:flex-end;gap:10px;height:120px;padding-top:10px}
.bars .bar{flex:1;background:var(--brand-soft);border-radius:6px 6px 0 0;position:relative;min-height:4px;transition:.2s}
.bars .bar span{position:absolute;bottom:-22px;left:0;right:0;text-align:center;font-size:.72rem;color:var(--muted)}
.bars .bar i{position:absolute;top:-18px;left:0;right:0;text-align:center;font-size:.66rem;color:var(--muted);font-style:normal}

/* Mobile nav */
.menu-toggle{display:none;background:none;border:0;cursor:pointer}
@media(max-width:820px){
  .sidebar{position:fixed;left:-260px;z-index:60;transition:.25s;box-shadow:4px 0 30px rgba(0,0,0,.2)}
  .sidebar.open{left:0}
  .menu-toggle{display:block}
  .content{padding:18px}
  .backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:50}
  .backdrop.show{display:block}
}