:root{
  --teal:#0f766e; --teal-d:#0b5650; --teal-l:#14b8a6;
  --ink:#1f2937; --muted:#6b7280; --line:#e5e7eb; --bg:#f3f5f7;
  --card:#ffffff; --danger:#dc2626; --danger-d:#b91c1c; --ok:#15803d;
  --warn:#b45309; --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.45}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}

/* Topbar */
.topbar{display:flex;align-items:center;gap:14px;background:linear-gradient(90deg,var(--teal),var(--teal-d));color:#fff;padding:10px 18px;box-shadow:var(--shadow);position:sticky;top:0;z-index:30}
.brand{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-weight:700;font-size:17px}
.brand-sub{font-size:12px;opacity:.85}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.who{font-size:13px;opacity:.95}
.role-badge{font-size:10px;text-transform:uppercase;letter-spacing:.04em;padding:2px 6px;border-radius:10px;background:rgba(255,255,255,.2)}
.menu-toggle{display:none;background:none;border:0;color:#fff;font-size:22px;cursor:pointer}

/* Layout */
.layout{display:flex;min-height:calc(100vh - 52px)}
.sidebar{width:210px;background:var(--card);border-right:1px solid var(--line);padding:14px 10px;flex-shrink:0}
.nav-link{display:block;padding:9px 12px;border-radius:8px;color:var(--ink);font-size:14px;margin-bottom:2px}
.nav-link:hover{background:#eef6f5;text-decoration:none}
.nav-link.active{background:var(--teal);color:#fff;font-weight:600}
.nav-section{font-size:11px;text-transform:uppercase;color:var(--muted);margin:14px 12px 4px;letter-spacing:.05em}
.content{flex:1;padding:22px 26px;max-width:1200px}
.footer{text-align:center;color:var(--muted);font-size:12px;padding:18px;border-top:1px solid var(--line);background:var(--card)}

/* Headings */
h1{font-size:22px;margin:0 0 4px}
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;flex-wrap:wrap;gap:10px}
.subtle{color:var(--muted);font-size:13px}

/* Cards / stats */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;box-shadow:var(--shadow)}
.stat{font-size:30px;font-weight:700;color:var(--teal-d)}
.stat-label{color:var(--muted);font-size:13px;margin-top:2px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.chart-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;box-shadow:var(--shadow)}
.chart-card h3{margin:0 0 12px;font-size:15px}
@media(max-width:900px){.grid-2{grid-template-columns:1fr}}

/* Tables */
.table-wrap{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:auto;box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
th{background:#f8fafa;font-size:12px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);position:sticky;top:0}
tbody tr:hover{background:#f9fcfc}
td.wrap,th.wrap{white-space:normal}
.tag{display:inline-block;font-size:11px;padding:2px 8px;border-radius:10px;background:#eef2f5;color:var(--muted)}
.tag.you{background:#e0f2f1;color:var(--teal-d)}
.muted{color:var(--muted)}

/* Forms */
.form{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px;box-shadow:var(--shadow);max-width:640px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{margin-bottom:14px}
label{display:block;font-size:13px;font-weight:600;margin-bottom:5px}
input,select,textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font-size:14px;font-family:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--teal-l);border-color:var(--teal-l)}
.hint{font-size:12px;color:var(--muted);margin-top:4px}
@media(max-width:620px){.form-row{grid-template-columns:1fr}}

/* Buttons */
.btn{display:inline-block;padding:9px 16px;border-radius:8px;border:0;background:var(--teal);color:#fff;font-size:14px;font-weight:600;cursor:pointer}
.btn:hover{background:var(--teal-d);text-decoration:none}
.btn-sm{padding:5px 10px;font-size:12.5px}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.5);color:#fff}
.btn-secondary{background:#fff;color:var(--teal-d);border:1px solid var(--teal)}
.btn-secondary:hover{background:#eef6f5}
.btn-danger{background:var(--danger)}.btn-danger:hover{background:var(--danger-d)}
.btn-row{display:flex;gap:10px;align-items:center;margin-top:8px}
.actions{display:flex;gap:6px}

/* Filter bar */
.filterbar{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px;box-shadow:var(--shadow);margin-bottom:14px}
.filterbar form{display:flex;gap:10px;flex-wrap:wrap;align-items:end}
.filterbar .field{margin:0;min-width:140px}
.filterbar input,.filterbar select{padding:7px 9px}

/* Flash */
.flash{padding:11px 14px;border-radius:8px;margin-bottom:14px;font-size:14px;border:1px solid}
.flash-success{background:#ecfdf5;border-color:#a7f3d0;color:#065f46}
.flash-error{background:#fef2f2;border-color:#fecaca;color:#991b1b}
.flash-info{background:#eff6ff;border-color:#bfdbfe;color:#1e40af}

/* Pagination */
.pager{display:flex;gap:6px;justify-content:center;margin:16px 0;flex-wrap:wrap}
.pager a,.pager span{padding:6px 11px;border-radius:7px;border:1px solid var(--line);background:#fff;font-size:13px}
.pager .cur{background:var(--teal);color:#fff;border-color:var(--teal)}

/* Login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--teal),var(--teal-d));padding:20px}
.login-card{background:#fff;border-radius:16px;padding:34px;width:100%;max-width:380px;box-shadow:0 12px 30px rgba(0,0,0,.2)}
.login-card h1{color:var(--teal-d);text-align:center}
.login-logo{text-align:center;margin-bottom:6px;font-size:13px;color:var(--muted)}

/* Mobile nav */
@media(max-width:760px){
  .menu-toggle{display:block}
  .sidebar{position:fixed;left:-220px;top:52px;bottom:0;transition:left .2s;z-index:25;box-shadow:var(--shadow)}
  body.nav-open .sidebar{left:0}
  .content{padding:16px}
  .who{display:none}
}