/* Gestione Impianti - Responsive */
:root {
    --primary: #1a5f7a;
    --primary-dark: #0d3d4d;
    --accent: #159895;
    --bg: #f5f6fa;
    --card-bg: #fff;
    --text: #2c3e50;
    --text-muted: #6c757d;
    --border: #dee2e6;
    --danger: #c0392b;
    --success: #27ae60;
    --radius: 8px;
    --shadow: 0 2px 8px rgba(0,0,0,.08);
    --header-h: 56px;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); line-height: 1.5; min-height: 100vh; position: relative; }
/* Evita overlay/backdrop estranei (estensioni o script di terzi) che coprono la pagina */
body::before, body::after { display: none !important; }
.main-header { position: relative; z-index: 2; }
.main-content { position: relative; z-index: 1; }
body.auth-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 1rem; background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); }

/* Header */
.main-header { position: sticky; top: 0; z-index: 100; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; padding: 0.75rem 1.5rem; background: var(--card-bg); box-shadow: var(--shadow); }
.logo { font-weight: 700; font-size: 1.25rem; color: var(--primary); text-decoration: none; }
.logo:hover { color: var(--primary-dark); }
.nav-toggle { display: none; width: 40px; height: 40px; border: none; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%232c3e50'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M4 6h16M4 12h16M4 18h16'/%3E%3C/svg%3E") center no-repeat; cursor: pointer; }
.main-nav { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.main-nav a { color: var(--text); text-decoration: none; padding: 0.4rem 0.6rem; border-radius: var(--radius); }
.main-nav a:hover { background: var(--bg); color: var(--primary); }
.nav-user { color: var(--text-muted); font-size: 0.9rem; margin-left: 0.5rem; }
.btn-logout { color: var(--danger) !important; }
.main-content { max-width: 1200px; margin: 0 auto; padding: 1.5rem; }

/* Auth */
.auth-box { width: 100%; max-width: 380px; padding: 2rem; background: var(--card-bg); border-radius: 12px; box-shadow: 0 8px 32px rgba(0,0,0,.2); }
.auth-box h1 { margin: 0 0 0.25rem; font-size: 1.5rem; color: var(--primary); }
.auth-subtitle { color: var(--text-muted); margin: 0 0 1.5rem; font-size: 0.95rem; }
.auth-form { display: flex; flex-direction: column; gap: 1rem; }
.auth-hint { margin-top: 1rem; font-size: 0.8rem; color: var(--text-muted); }

/* Forms */
.form-group { display: flex; flex-direction: column; gap: 0.35rem; }
.form-group label { font-weight: 500; font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea { padding: 0.5rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1rem; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,95,122,.2); }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; }
.form-actions { margin-top: 1.5rem; display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.5rem 1rem; border-radius: var(--radius); font-size: 0.95rem; font-weight: 500; text-decoration: none; border: none; cursor: pointer; transition: opacity .2s; }
.btn:hover { opacity: .9; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-secondary { background: var(--border); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: 0.35rem 0.65rem; font-size: 0.85rem; }

/* Alerts */
.alert { padding: 0.75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; }
.alert-danger { background: #fde8e8; color: var(--danger); border: 1px solid #f5c6cb; }
.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }

/* Page */
.page-header { margin-bottom: 1.5rem; }
.page-header h1 { margin: 0 0 0.25rem; font-size: 1.75rem; }
.welcome { color: var(--text-muted); margin: 0; }

/* Dashboard cards */
.dashboard-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem; margin-bottom: 2rem; }
.card { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 1.5rem; background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); text-decoration: none; color: inherit; transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,.12); }
.card-number { font-size: 2rem; font-weight: 700; color: var(--primary); }
.card-label { font-size: 0.9rem; color: var(--text-muted); }

.quick-actions h2 { font-size: 1.1rem; margin: 0 0 0.75rem; }
.action-links { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* Tables / Lists */
.table-wrap { overflow-x: auto; background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--border); }
th { font-weight: 600; background: var(--bg); }
tr:hover { background: #fafbfc; }
.table-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.badge { font-size: 0.75rem; padding: 0.2rem 0.5rem; background: var(--text-muted); color: #fff; border-radius: 4px; }
.text-muted { color: var(--text-muted); }
.toolbar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; margin-bottom: 1rem; }
.toolbar h2 { margin: 0; font-size: 1.25rem; }

/* Detail */
.detail-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.detail-item label { display: block; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.2rem; }
.detail-item span { font-weight: 500; }

/* Mobile nav */
@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .main-nav { display: none; width: 100%; flex-direction: column; align-items: stretch; }
    .main-nav.is-open { display: flex; }
    .main-nav .nav-user { margin-left: 0; margin-top: 0.5rem; padding-top: 0.5rem; border-top: 1px solid var(--border); }
    .main-content { padding: 1rem; }
    .form-row { grid-template-columns: 1fr; }
    th, td { padding: 0.5rem; font-size: 0.9rem; }
}