/* ===== Variabili ===== */
:root{
  --bg:#f6f8fc;
  --panel:#ffffffcc;
  --text:#172033;
  --muted:#667085;
  --line:#d8deea;
  --brand:#3858e9;
  --brand-soft:#eef2ff;
  --danger:#b42318;
  --danger-soft:#fff0f0;
  --success:#12b76a;
  --success-soft:#dcfae6;
  --warn:#fff1d6;
  --shadow:0 14px 36px #1820331a;
  --shadow-sm:0 5px 18px #1820330d;
  --radius:14px;
  --radius-sm:10px;
  --menu-w:240px;
  --font:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
}

/* ===== Reset & base ===== */
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  font-family:var(--font);
  color:var(--text);
  background:linear-gradient(135deg,#f6f8fc,#eef3ff 45%,#fff7ec);
  overflow:hidden;
}
button,input,select,textarea{font:inherit}
[hidden]{display:none !important}
.muted{color:var(--muted)}
.small{font-size:12px}
.error{color:var(--danger)}

/* ===== Pulsanti comuni ===== */
.btn{
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:#fff;
  color:var(--text);
  padding:8px 12px;
  cursor:pointer;
  font-weight:600;
  box-shadow:0 1px 0 #0001;
  transition:transform .05s ease, background .15s ease;
}
.btn:hover{background:#f8fafc}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn.primary:hover{background:#2c47c4}
.btn.danger{background:var(--danger-soft);color:var(--danger);border-color:#fecaca}
.btn.danger:hover{background:#ffe2e2}
.btn.ghost{background:transparent;border-color:transparent}
.btn.sm{padding:5px 9px;font-size:12px;border-radius:8px}

/* ===== Login ===== */
.login-gate{
  position:fixed;inset:0;z-index:100;
  display:grid;place-items:center;
  background:#f6f8fce6;backdrop-filter:blur(8px);
}
.login-box{
  width:min(420px,92vw);
  background:#fff;border:1px solid var(--line);
  border-radius:22px;box-shadow:var(--shadow);
  padding:22px;
}
.login-box h2{margin:0 0 6px}
.login-box select,.login-box input{
  width:100%;margin:8px 0;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;padding:10px;
}
.login-box .btn{width:100%;margin-top:6px}

/* ===== Layout app ===== */
.app{
  height:100vh;
  display:grid;
  grid-template-columns:var(--menu-w) 1fr;
}

/* ===== Menu laterale ===== */
.menu{
  background:#ffffffd9;
  border-right:1px solid var(--line);
  padding:14px 10px;
  display:flex;flex-direction:column;gap:2px;
  overflow:auto;
  backdrop-filter:blur(10px);
}
.menu-brand{
  font-weight:900;font-size:16px;
  padding:6px 10px 14px;
  border-bottom:1px solid var(--line);
  margin-bottom:8px;
}
.menu-brand small{display:block;font-weight:500;color:var(--muted);font-size:11px;margin-top:2px}
.menu-link{
  display:flex;align-items:center;gap:9px;
  padding:9px 12px;
  border:0;background:transparent;
  text-align:left;width:100%;
  border-radius:var(--radius-sm);
  cursor:pointer;color:var(--text);
  font-weight:600;font-size:13.5px;
}
.menu-link:hover{background:var(--brand-soft)}
.menu-link.active{background:var(--brand);color:#fff}
.menu-link .ico{width:18px;text-align:center}
.menu-section{
  font-size:10px;text-transform:uppercase;letter-spacing:.06em;
  color:var(--muted);font-weight:800;
  padding:14px 12px 4px;
}
.menu-footer{
  margin-top:auto;padding:10px 6px 0;
  border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:4px;
}
.menu-user{
  padding:8px 12px;font-size:12px;color:var(--muted);
}
.menu-user b{color:var(--text)}

/* ===== Slot pagina ===== */
.page{
  overflow:auto;
  min-height:0;
  position:relative;
}
.page-header{
  padding:16px 22px 10px;
  background:#ffffffa8;
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  position:sticky;top:0;z-index:5;
}
.page-title{font-size:22px;font-weight:850;margin:0 0 4px}
.page-subtitle{color:var(--muted);font-size:13px}
.page-body{padding:18px 22px}

/* ===== Card grafica generica (placeholder) ===== */
.placeholder{
  background:#fff;border:1px dashed var(--line);
  border-radius:18px;padding:38px;text-align:center;
  color:var(--muted);
}
.placeholder h3{color:var(--text);margin:0 0 6px}

/* ===== Responsive ===== */
@media (max-width:900px){
  body{overflow:auto}
  .app{
    grid-template-columns:1fr;
    height:auto;min-height:100vh;
  }
  .menu{
    flex-direction:row;flex-wrap:wrap;
    border-right:0;border-bottom:1px solid var(--line);
    padding:8px;
  }
  .menu-brand,.menu-section,.menu-footer{display:none}
  .menu-link{padding:6px 10px;font-size:12px}
}