/* Modern clean UI (Outlook-ish but modern). */
:root{
  --bg: #f6f7fb;
  --panel: #ffffff;
  --panel2: #fbfcfe;
  --text: #111827;
  --muted: #6b7280;
  --border: rgba(17,24,39,.10);
  --accent: #0f6cbd;
  --accent2: rgba(15,108,189,.10);
  --danger: #b42318;
  --ok: #067647;
  --warn: #b54708;

  --shadow: 0 10px 30px rgba(17,24,39,.08);
  --shadow2: 0 6px 18px rgba(17,24,39,.06);
  --radius: 16px;
  --radius2: 12px;

  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Helvetica Neue", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  background: radial-gradient(1200px 600px at 20% 0%, rgba(15,108,189,.08), transparent 60%),
              radial-gradient(900px 500px at 80% 10%, rgba(99,102,241,.08), transparent 60%),
              var(--bg);
}
a{color:inherit}
small.code{font-family:var(--mono);color:var(--muted)}
/* Layout */
.app{
  min-height:100vh;
  display:grid;
  grid-template-columns: 270px 1fr;
}
@media (max-width: 980px){
  .app{grid-template-columns:1fr}
  .sidebar{position:sticky;top:0;z-index:10}
}
.sidebar{
  background: linear-gradient(180deg, var(--panel), var(--panel2));
  border-right:1px solid var(--border);
  padding:14px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  padding:10px;border-radius:14px;text-decoration:none;
  border:1px solid transparent;
}
.brand:hover{background:var(--panel2);border-color:var(--border)}
.brand img{height:38px;width:38px;border-radius:12px;object-fit:cover;border:1px solid var(--border)}
.brand .title{font-weight:900;letter-spacing:.2px}
.brand .sub{font-size:12px;color:var(--muted)}
.nav{margin-top:12px;display:flex;flex-direction:column;gap:6px}
.nav a{
  padding:10px 10px;border-radius:14px;text-decoration:none;
  display:flex;align-items:center;justify-content:space-between;
  border:1px solid transparent;
}
.nav a:hover{background:var(--panel2);border-color:var(--border)}
.nav a.active{background:var(--accent2);border-color:rgba(15,108,189,.20)}
.nav .badge{font-size:12px;border:1px solid var(--border);border-radius:999px;padding:2px 8px;color:var(--muted);background:rgba(255,255,255,.7)}
.main{padding:18px}
.toprow{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-bottom:12px}
.h1{font-size:20px;font-weight:950;margin:0;letter-spacing:.2px}
.h2{font-size:16px;font-weight:900;margin:0;letter-spacing:.2px}
.muted{color:var(--muted)}
/* Cards / tables */
.card{
  background:rgba(255,255,255,.92);
  backdrop-filter: blur(6px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow2);
  padding:14px;
}
.hr{height:1px;background:var(--border);margin:12px 0}
.grid{display:grid;gap:14px}
.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:980px){.grid.cols-2,.grid.cols-3{grid-template-columns:1fr}}
.row{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap}
/* Buttons */
.btn{
  appearance:none;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 12px;border-radius:14px;border:1px solid var(--border);
  background:rgba(255,255,255,.85);
  text-decoration:none;cursor:pointer;
  transition: transform .08s ease, box-shadow .08s ease, filter .08s ease;
}
.btn:hover{filter:brightness(.98);box-shadow:var(--shadow2)}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--accent);border-color:rgba(15,108,189,.6);color:white}
.btn.ok{background:var(--ok);border-color:rgba(6,118,71,.55);color:white}
.btn.danger{background:var(--danger);border-color:rgba(180,35,24,.55);color:white}
/* Inputs */
.input, textarea, select{
  width:100%;
  padding:10px 12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:white;
  color:var(--text);
  outline:none;
}
.input:focus, textarea:focus, select:focus{
  border-color: rgba(15,108,189,.35);
  box-shadow: 0 0 0 4px rgba(15,108,189,.12);
}
textarea{min-height:90px;resize:vertical}
label{display:block;font-size:12px;color:var(--muted);margin:10px 0 6px}
/* Badges */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 8px;border-radius:999px;border:1px solid var(--border);
  font-size:12px;color:var(--muted);background:rgba(255,255,255,.75);
}
.badge.ok{color:var(--ok);border-color:rgba(6,118,71,.25);background:rgba(6,118,71,.07)}
.badge.warn{color:var(--warn);border-color:rgba(181,71,8,.25);background:rgba(181,71,8,.08)}
.badge.danger{color:var(--danger);border-color:rgba(180,35,24,.25);background:rgba(180,35,24,.08)}
/* Table */
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px 8px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
.table th{font-size:12px;color:var(--muted);font-weight:900;background:rgba(251,252,254,.9)}
/* List items */
.list{display:flex;flex-direction:column;gap:10px}
.list-item{
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:rgba(255,255,255,.92);
  padding:12px;
  text-decoration:none;
  box-shadow:var(--shadow2);
}
.list-item:hover{filter:brightness(.99)}
.kpi{display:flex;flex-direction:column;gap:6px}
.kpi .num{font-size:20px;font-weight:950}
.toast{padding:10px 12px;border:1px solid var(--border);border-radius:14px;background:rgba(255,255,255,.85);box-shadow:var(--shadow2)}
.toast.ok{border-color:rgba(6,118,71,.20);background:rgba(6,118,71,.07)}
.toast.err{border-color:rgba(180,35,24,.20);background:rgba(180,35,24,.07)}
footer{margin-top:18px;color:var(--muted);font-size:12px}