:root{
  --bg:#f5f7fa;
  --surface:#ffffff;
  --border:#e4e8ee;
  --text:#1b2733;
  --muted:#6b7785;
  --primary:#0d6e6e;
  --primary-dark:#0a5757;
  --primary-soft:#e6f2f2;
  --sidebar:#0f2530;
  --sidebar-muted:#8ca3ae;
  --sidebar-active:#12414f;
  --green:#137a4b; --green-bg:#e5f5ec;
  --red:#b02a2a;   --red-bg:#fbe9e9;
  --amber:#9a6b00; --amber-bg:#fdf3dd;
  --blue:#1d5fa8;  --blue-bg:#e7f0fb;
  --gray:#556; --gray-bg:#eef1f4;
  --radius:10px;
  --shadow:0 1px 2px rgba(16,32,48,.06),0 2px 8px rgba(16,32,48,.05);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
h1,h2,h3{margin:0}

/* ---------- Layout ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{width:236px;background:var(--sidebar);color:#fff;display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;z-index:40}
.main{flex:1;margin-left:236px;display:flex;flex-direction:column;min-height:100vh}
.brand{display:flex;align-items:center;gap:10px;padding:18px 18px;border-bottom:1px solid rgba(255,255,255,.07)}
.brand-mark{width:38px;height:38px;border-radius:9px;background:var(--primary);color:#fff;font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center;letter-spacing:.5px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:15px}
.brand-text span{font-size:11px;color:var(--sidebar-muted)}
.nav{flex:1;padding:12px 10px;display:flex;flex-direction:column;gap:2px;overflow-y:auto}
.nav-link{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:8px;color:var(--sidebar-muted);font-weight:500;transition:.15s}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-link.active{background:var(--sidebar-active);color:#fff}
.nav-icon{display:inline-flex;width:18px;height:18px}
.nav-icon svg{width:18px;height:18px}
.sidebar-foot{padding:10px;border-top:1px solid rgba(255,255,255,.07)}

/* ---------- Topbar ---------- */
.topbar{height:62px;background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:14px;padding:0 22px;position:sticky;top:0;z-index:30}
.page-title{font-size:17px;font-weight:600;flex:1}
.icon-btn{background:none;border:none;cursor:pointer;color:var(--text);padding:6px;border-radius:6px;display:none}
.icon-btn svg{width:22px;height:22px}
.user-chip{display:flex;align-items:center;gap:10px}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;text-transform:uppercase}
.user-meta{display:flex;flex-direction:column;line-height:1.2}
.user-meta strong{font-size:13px}
.user-meta span{font-size:11px;color:var(--muted)}

/* ---------- Content ---------- */
.content{flex:1;padding:24px 26px}
.app-foot{display:flex;justify-content:space-between;padding:14px 26px;color:var(--muted);font-size:12px;border-top:1px solid var(--border)}

/* ---------- Cards & grid ---------- */
.grid{display:grid;gap:16px}
.stat-grid{grid-template-columns:repeat(auto-fit,minmax(210px,1fr));margin-bottom:22px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-pad{padding:18px 20px}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 18px;box-shadow:var(--shadow)}
.stat-label{color:var(--muted);font-size:12.5px;font-weight:500;text-transform:uppercase;letter-spacing:.4px}
.stat-value{font-size:26px;font-weight:700;margin-top:6px}
.stat-sub{font-size:12px;color:var(--muted);margin-top:2px}
.stat.accent{border-left:3px solid var(--primary)}

.section{margin-bottom:26px}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:12px;flex-wrap:wrap}
.section-head h2{font-size:15px;font-weight:600}
.cols-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:900px){.cols-2{grid-template-columns:1fr}}

/* ---------- Tables ---------- */
.table-wrap{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:auto;box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:13.5px}
thead th{text-align:left;padding:11px 14px;background:#fafbfc;border-bottom:1px solid var(--border);color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.3px;white-space:nowrap}
tbody td{padding:11px 14px;border-bottom:1px solid var(--border)}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#fafcfc}
.num{text-align:right;font-variant-numeric:tabular-nums}
.empty{padding:40px;text-align:center;color:var(--muted)}

/* ---------- Badges ---------- */
.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:11.5px;font-weight:600;line-height:1.4;white-space:nowrap}
.badge-green{background:var(--green-bg);color:var(--green)}
.badge-red{background:var(--red-bg);color:var(--red)}
.badge-amber{background:var(--amber-bg);color:var(--amber)}
.badge-blue{background:var(--blue-bg);color:var(--blue)}
.badge-gray{background:var(--gray-bg);color:var(--gray)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 15px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-weight:600;font-size:13.5px;cursor:pointer;transition:.15s;font-family:inherit}
.btn:hover{background:#f3f5f7}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-danger{background:var(--red);border-color:var(--red);color:#fff}
.btn-danger:hover{filter:brightness(.93)}
.btn-sm{padding:6px 11px;font-size:12.5px}
.btn-ghost{background:none;border:none;color:var(--primary)}
.btn-row{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- Forms ---------- */
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.form-grid .full{grid-column:1/-1}
@media(max-width:700px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:12.5px;font-weight:600;color:var(--text)}
.field input,.field select,.field textarea{padding:9px 11px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;background:#fff;color:var(--text)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}
.field textarea{resize:vertical;min-height:80px}
.field .hint{font-size:11.5px;color:var(--muted)}

/* ---------- Alerts ---------- */
.alert{padding:12px 15px;border-radius:8px;margin-bottom:16px;font-size:13.5px;font-weight:500}
.alert-success{background:var(--green-bg);color:var(--green)}
.alert-danger,.alert-error{background:var(--red-bg);color:var(--red)}
.alert-info{background:var(--blue-bg);color:var(--blue)}
.alert-warning{background:var(--amber-bg);color:var(--amber)}

/* ---------- Login ---------- */
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0f2530,#12414f);padding:20px}
.login-card{background:#fff;width:100%;max-width:400px;border-radius:14px;padding:34px 32px;box-shadow:0 20px 50px rgba(0,0,0,.3)}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.login-brand .brand-mark{width:44px;height:44px;font-size:15px}
.login-sub{color:var(--muted);margin-bottom:24px;font-size:13px}
.login-card .field{margin-bottom:16px}

/* ---------- Utilities ---------- */
.muted{color:var(--muted)}
.right{text-align:right}
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
.flex{display:flex}.gap{gap:10px}.between{justify-content:space-between}.center{align-items:center}
.pill{font-size:12px;padding:2px 8px;border-radius:6px;background:var(--gray-bg);color:var(--gray)}
.progress{height:7px;background:#eef1f4;border-radius:6px;overflow:hidden}
.progress > span{display:block;height:100%;background:var(--primary)}
.progress > span.over{background:var(--red)}
.line-total{display:flex;justify-content:space-between;padding:6px 0;border-top:1px dashed var(--border)}
.line-total.grand{font-weight:700;font-size:16px;border-top:2px solid var(--text)}

/* ---------- Responsive ---------- */
@media(max-width:860px){
  .sidebar{transform:translateX(-100%);transition:.2s}
  .sidebar.open{transform:none}
  .main{margin-left:0}
  .icon-btn{display:inline-flex}
}