:root{
  --bg:#f5f6f8; --panel:#fff; --ink:#101114; --muted:#6b7280;
  --line:#e6e8ec; --red:#c0392b; --yellow:#f4d35e; --green:#16a34a;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--ink)} code{background:#f0f1f4;padding:1px 6px;border-radius:6px;font-size:12px}
.muted{color:var(--muted)} .center{text-align:center} .small{font-size:13px}

.logo-mark{width:36px;height:36px;border-radius:9px;background:linear-gradient(140deg,#1c1f24,#0a0a0b);
  color:#f4d35e;display:grid;place-items:center;font-weight:800;font-family:Montserrat,sans-serif;letter-spacing:1px}
.logo-mark.big{width:54px;height:54px;border-radius:14px;font-size:18px;margin:0 auto 8px}

/* LOGIN */
.login-body{min-height:100vh;display:grid;place-items:center;
  background:radial-gradient(1200px 600px at 20% 0%, #1c1f24 0%, #0a0a0b 60%, #000 100%);color:#fff}
.login-card{background:#fff;color:var(--ink);padding:32px;border-radius:16px;width:min(380px,92vw);
  box-shadow:0 30px 60px rgba(0,0,0,.35);display:flex;flex-direction:column;gap:6px;text-align:center}
.login-card h1{margin:6px 0 0;font-family:Montserrat,sans-serif}
.login-card label{text-align:left;font-size:13px;font-weight:600;margin-top:10px}
.login-card input{padding:11px 13px;border:1px solid var(--line);border-radius:10px;font-size:15px}
.login-card .btn{margin-top:14px} .login-card .back{margin-top:14px;font-size:13px;color:var(--muted);text-decoration:none}

/* LAYOUT */
.sidebar{position:fixed;inset:0 auto 0 0;width:240px;background:#0e1013;color:#dadde2;padding:18px;display:flex;flex-direction:column;gap:14px;overflow-y:auto}
.sidebar .brand{display:flex;gap:10px;align-items:center}
.sidebar .brand strong{display:block;color:#fff;font-family:Montserrat,sans-serif;letter-spacing:.5px}
.sidebar .brand span{font-size:11px;color:#9aa0a6;text-transform:uppercase;letter-spacing:1.5px}
.sidebar nav{display:flex;flex-direction:column;gap:2px;margin-top:6px}
.sidebar nav a{color:#cfd2d6;text-decoration:none;padding:10px 12px;border-radius:8px;font-size:14px}
.sidebar nav a:hover{background:#191c20;color:#fff}
.sidebar nav a.on{background:linear-gradient(135deg,#c0392b,#7d1e15);color:#fff;box-shadow:0 8px 18px rgba(192,57,43,.3)}
.side-foot{margin-top:auto;font-size:12px;color:#9aa0a6;border-top:1px solid #1d2025;padding-top:12px}
.side-foot a{color:var(--yellow);text-decoration:none;margin-right:6px}

.content{margin-left:240px;padding:26px 32px 80px;min-height:100vh}
.page-head h1{margin:0 0 18px;font-family:Montserrat,sans-serif;font-size:24px}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:22px;box-shadow:0 4px 14px rgba(15,17,21,.04)}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.panel-head h2{margin:0;font-size:17px;font-family:Montserrat,sans-serif}

/* KPI */
.cards-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;display:flex;flex-direction:column;gap:6px;box-shadow:0 4px 14px rgba(15,17,21,.04)}
.kpi span{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:1.2px}
.kpi strong{font-size:30px;font-family:Montserrat,sans-serif}

/* FORMS */
.form-stack{display:flex;flex-direction:column;gap:14px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px}
.field input[type=text],.field input[type=number],.field input[type=tel],.field input[type=password],.field textarea{
  width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14px;font-family:inherit;background:#fafbfc}
.field textarea{resize:vertical;min-height:74px}
.check{display:inline-flex;align-items:center;gap:8px;font-size:14px;cursor:pointer}
.actions{display:flex;gap:10px;justify-content:flex-end;margin-top:6px}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);font-weight:600;font-size:14px;text-decoration:none;cursor:pointer;transition:.15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 14px rgba(0,0,0,.08)}
.btn.primary{background:linear-gradient(135deg,#c0392b,#8e2620);color:#fff;border-color:transparent}
.btn.ghost{background:transparent}
.btn.danger{background:#fff;color:var(--red);border-color:#f3c8c2}
.btn.danger:hover{background:#fbecea}
.btn.sm{padding:6px 10px;font-size:12px;border-radius:8px}

/* TABLE */
.tbl{width:100%;border-collapse:collapse}
.tbl th,.tbl td{padding:11px 12px;border-bottom:1px solid var(--line);font-size:14px;text-align:left;vertical-align:top}
.tbl th{background:#fafbfc;font-size:12px;text-transform:uppercase;color:#6b7280;letter-spacing:1px}
.tbl .ellipsis{max-width:320px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tbl .cell-wrap{max-width:340px;white-space:pre-wrap}
.thumb{width:54px;height:54px;object-fit:contain;background:#fafbfc;border:1px solid var(--line);border-radius:8px}

/* ALERTS */
.alert{padding:12px 14px;border-radius:10px;margin-bottom:16px;font-size:14px;border:1px solid}
.alert.ok{background:#ecfdf5;color:#065f46;border-color:#a7f3d0}
.alert.err{background:#fef2f2;color:#991b1b;border-color:#fecaca}

@media (max-width:900px){
  .sidebar{position:static;width:100%;flex-direction:row;flex-wrap:wrap;gap:6px;padding:14px}
  .sidebar nav{flex-direction:row;flex-wrap:wrap;width:100%}
  .sidebar .side-foot{width:100%}
  .content{margin-left:0;padding:18px}
  .cards-row,.grid-2{grid-template-columns:1fr}
}