:root{
  --bg:#eef3f8;--panel:#ffffff;--panel2:#f8fbff;--text:#0f172a;--muted:#64748b;
  --brand:#0f766e;--brand2:#14b8a6;--accent:#f59e0b;--blue:#2563eb;--danger:#dc2626;
  --border:#dbe5ef;--shadow:0 18px 45px rgba(15,23,42,.10);--shadow2:0 8px 24px rgba(15,23,42,.08);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;background:
  radial-gradient(circle at top left,rgba(20,184,166,.18),transparent 32%),
  radial-gradient(circle at top right,rgba(37,99,235,.12),transparent 30%),var(--bg);color:var(--text);min-height:100vh}
a{color:inherit;text-decoration:none}.topbar{position:sticky;top:0;z-index:10;background:linear-gradient(135deg,#083344,#0f766e 60%,#14b8a6);color:#fff;padding:18px 28px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;box-shadow:0 14px 35px rgba(8,51,68,.25)}
.topbar h1{font-size:24px;letter-spacing:.2px;margin:0;font-weight:800;display:flex;align-items:center;gap:10px}.topbar h1:after{content:'Control Panel';font-size:12px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.22);padding:5px 9px;border-radius:999px}.nav{display:flex;gap:9px;flex-wrap:wrap}.nav a{color:#ecfeff;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.18);padding:10px 13px;border-radius:12px;font-weight:700;font-size:13px;backdrop-filter:blur(10px);transition:.18s}.nav a:hover{transform:translateY(-1px);background:rgba(255,255,255,.24)}
.container{max-width:1250px;margin:26px auto;padding:0 18px}.container:before{content:'Overview';display:block;font-size:12px;text-transform:uppercase;letter-spacing:1.5px;color:var(--brand);font-weight:900;margin:0 0 10px 4px}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.two{display:grid;grid-template-columns:1fr 1fr;gap:18px}.card{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid rgba(219,229,239,.95);border-radius:22px;box-shadow:var(--shadow2);padding:22px;margin-bottom:18px;position:relative;overflow:hidden}.card:hover{box-shadow:var(--shadow)}.card h2{margin:0 0 15px;font-size:20px;letter-spacing:-.2px}.card h2:before{content:'';display:inline-block;width:9px;height:22px;border-radius:10px;background:linear-gradient(var(--brand2),var(--brand));vertical-align:middle;margin-right:10px}.stat{min-height:145px}.stat:after{content:'';position:absolute;right:-35px;top:-35px;width:110px;height:110px;border-radius:50%;background:linear-gradient(135deg,rgba(20,184,166,.16),rgba(37,99,235,.10))}.stat .label{color:var(--muted);font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.6px}.stat .value{font-size:30px;font-weight:900;margin-top:12px;letter-spacing:-1px;color:#0f172a}.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.form-grid.two-col{grid-template-columns:repeat(2,1fr)}label{font-size:12px;color:#475569;display:block;margin:0 0 7px;font-weight:800;text-transform:uppercase;letter-spacing:.45px}input,select,textarea{width:100%;border:1px solid var(--border);border-radius:13px;padding:12px 13px;font-size:14px;background:#fff;color:var(--text);outline:none;transition:.15s;box-shadow:inset 0 1px 0 rgba(15,23,42,.03)}input:focus,select:focus,textarea:focus{border-color:var(--brand2);box-shadow:0 0 0 4px rgba(20,184,166,.13)}textarea{min-height:82px}.btn{border:0;background:linear-gradient(135deg,var(--brand),var(--brand2));color:white;border-radius:13px;padding:12px 16px;cursor:pointer;font-weight:900;display:inline-flex;align-items:center;justify-content:center;gap:8px;box-shadow:0 10px 22px rgba(15,118,110,.22);transition:.16s}.btn:hover{transform:translateY(-1px);filter:saturate(1.1)}.btn.secondary{background:linear-gradient(135deg,#334155,#0f172a);box-shadow:0 10px 22px rgba(15,23,42,.18)}.btn.danger{background:linear-gradient(135deg,#dc2626,#991b1b);box-shadow:0 10px 22px rgba(220,38,38,.18)}.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:16px;background:#fff}table{width:100%;border-collapse:separate;border-spacing:0;background:white}th,td{border-bottom:1px solid #edf2f7;padding:12px 13px;text-align:left;white-space:nowrap}th{position:sticky;top:0;background:#f8fafc;color:#334155;font-size:12px;text-transform:uppercase;letter-spacing:.55px;font-weight:900}tr:hover td{background:#fbfdff}tr:last-child td{border-bottom:0}.muted{color:var(--muted);font-weight:600;line-height:1.55}.pill{display:inline-flex;align-items:center;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:900}.pill.paid{background:#dcfce7;color:#166534}.pill.pending{background:#fee2e2;color:#991b1b}.preview{background:linear-gradient(135deg,#ecfdf5,#eff6ff);border:1px solid #b7f0df;border-radius:18px;padding:14px 15px;font-weight:900;color:#064e3b;line-height:1.8}.alert{padding:13px 15px;border-radius:14px;margin-bottom:16px;font-weight:800;border:1px solid transparent}.alert.ok{background:#dcfce7;color:#166534;border-color:#bbf7d0}.alert.err{background:#fee2e2;color:#991b1b;border-color:#fecaca}.actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.right{text-align:right}.footer{color:#64748b;font-size:12px;text-align:center;padding:22px;font-weight:700}.footer:before{content:'◆ ';color:var(--brand)}
@media(max-width:1000px){.grid{grid-template-columns:repeat(2,1fr)}.two,.form-grid,.form-grid.two-col{grid-template-columns:1fr}.topbar{align-items:flex-start}.stat .value{font-size:26px}}@media(max-width:620px){.grid{grid-template-columns:1fr}.topbar{padding:16px}.topbar h1{font-size:20px}.nav a{font-size:12px;padding:9px 10px}.container{margin:18px auto;padding:0 12px}.card{border-radius:18px;padding:17px}th,td{padding:10px}}