:root{--bg:#f5f7fb;--card:#fff;--text:#172033;--muted:#73809a;--primary:#5b5bd6;--secondary:#8b5cf6;--danger:#dc3545;--border:#e7eaf2}
*{box-sizing:border-box}body{margin:0;font-family:Inter,Poppins,Arial,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.login-page{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#111827,#4f46e5 55%,#8b5cf6)}.login-card{width:min(430px,92vw);background:#fff;padding:38px;border-radius:24px;box-shadow:0 30px 80px #0005}.brand{font-size:25px;font-weight:800}.brand span{color:var(--primary)}.login-card h1{margin:24px 0 8px}.muted{color:var(--muted)}.field{margin:16px 0}.field label{display:block;font-size:13px;font-weight:700;margin-bottom:7px}.input,select,textarea{width:100%;border:1px solid var(--border);border-radius:11px;padding:12px 13px;background:#fff;font:inherit}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:11px;padding:11px 16px;background:#eef0f6;font-weight:700;cursor:pointer}.btn-primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--secondary))}.btn-danger{color:#fff;background:var(--danger)}.btn-block{width:100%}.layout{display:grid;grid-template-columns:245px 1fr;min-height:100vh}.sidebar{background:#111827;color:#cbd5e1;padding:24px 14px;position:sticky;top:0;height:100vh}.sidebar .brand{color:#fff;padding:0 10px 25px}.nav a{display:block;padding:11px 13px;border-radius:10px;margin:3px 0;font-size:14px}.nav a:hover,.nav a.active{background:#ffffff16;color:#fff}.main{min-width:0}.topbar{height:70px;background:#fff;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;padding:0 28px}.content{padding:26px}.page-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.page-title h1{font-size:24px;margin:0}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.card{background:var(--card);border:1px solid var(--border);border-radius:17px;padding:20px;box-shadow:0 6px 20px #11182708}.stat b{font-size:26px;display:block;margin-top:10px}.stat small{color:var(--muted)}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse;font-size:14px}.table th,.table td{padding:12px;border-bottom:1px solid var(--border);text-align:left;white-space:nowrap}.table th{color:var(--muted);font-size:12px;text-transform:uppercase}.badge{display:inline-block;padding:5px 9px;border-radius:20px;background:#e9e7ff;color:#4f46e5;font-size:12px}.alert{padding:12px 15px;border-radius:10px;margin-bottom:18px;background:#dcfce7;color:#166534}.alert.error{background:#fee2e2;color:#991b1b}.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.full{grid-column:1/-1}.mobile-toggle{display:none}@media(max-width:1000px){.cards{grid-template-columns:repeat(2,1fr)}.form-grid{grid-template-columns:1fr 1fr}}@media(max-width:720px){.layout{grid-template-columns:1fr}.sidebar{position:fixed;z-index:5;left:-260px;width:245px;transition:.2s}.sidebar.open{left:0}.mobile-toggle{display:block}.content{padding:16px}.topbar{padding:0 16px}.cards,.grid-2,.form-grid{grid-template-columns:1fr}}

.nav-group{margin:3px 0}.nav-toggle{display:flex;align-items:center;justify-content:space-between;padding:11px 13px;border-radius:10px;font-size:14px}.nav-toggle:hover{background:#ffffff10}.nav-toggle .chev{transition:transform .18s;font-size:14px;opacity:.7;cursor:pointer;padding:6px 10px;margin:-6px -10px}.nav-toggle .chev:hover{opacity:1}.nav-group.open .nav-toggle .chev{transform:rotate(180deg)}.nav-sub{display:none}.nav-group.open .nav-sub{display:block}.nav-sub a{display:block;padding:9px 13px 9px 40px;border-radius:10px;margin:2px 0;font-size:13.5px;color:#b7c0d4}.nav-sub a:hover,.nav-sub a.active{background:#ffffff16;color:#fff}