:root {
/*    --bg-primary: #0b192c;*/
    --bg-primary: #0b2c24;
    --bg-secondary: #1e3e62;
    --accent: #00adb5;
    --accent-hover: #00888f;
    --bg-light: #f8fafc;
    --card-bg: #ffffff;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #10b981;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; }

body { background-color: var(--bg-light); color: var(--text-dark); display: flex; flex-direction: column; min-height: 100vh; }

/* Navbar Stile Tregi.net */
.header-nav { background-color: var(--bg-primary); color: #fff; padding: 0 2rem; display: flex; align-items: center; justify-content: space-between; height: 70px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.header-brand { font-size: 1.4rem; font-weight: 700; color: #fff; text-decoration: none; display: flex; align-items: center; gap: 0.5rem; }
.header-brand span { color: var(--accent); }
.nav-menu { display: flex; gap: 1.5rem; list-style: none; }
.nav-menu a { color: #cbd5e1; text-decoration: none; font-weight: 500; font-size: 0.95rem; transition: color 0.2s; }
.nav-menu a:hover, .nav-menu a.active { color: var(--accent); }

/* Layout e Container */
.container { max-width: 1200px; width: 100%; margin: 2rem auto; padding: 0 1rem; flex: 1; }
.page-title { margin-bottom: 1.5rem; font-size: 1.6rem; color: var(--bg-primary); border-bottom: 2px solid var(--border-color); padding-bottom: 0.5rem; display: flex; justify-content: space-between; align-items: center; }

/* Dashboard Cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; margin-bottom: 2rem; }
.stat-card { background: var(--card-bg); border-radius: 8px; padding: 1.5rem; border: 1px solid var(--border-color); border-left: 5px solid var(--accent); box-shadow: 0 2px 5px rgba(0,0,0,0.03); }
.stat-card.danger { border-left-color: var(--danger); }
.stat-card.warning { border-left-color: var(--warning); }
.stat-number { font-size: 2rem; font-weight: 700; margin-top: 0.5rem; color: var(--bg-primary); }
.stat-label { font-size: 0.85rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

/* Tabelle */
.table-container { background: var(--card-bg); border-radius: 8px; border: 1px solid var(--border-color); overflow: hidden; margin-bottom: 2rem; box-shadow: 0 2px 5px rgba(0,0,0,0.02); }
.table-header { padding: 1rem 1.5rem; background: #f1f5f9; font-weight: 600; color: var(--bg-primary); border-bottom: 1px solid var(--border-color); }
table { width: 100%; border-collapse: collapse; text-align: left; }
th, td { padding: 0.85rem 1.25rem; border-bottom: 1px solid var(--border-color); font-size: 0.95rem; }
th { background-color: #f8fafc; color: var(--text-muted); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; }
tr:hover { background-color: #f8fafc; }

/* Badge Status */
.badge { display: inline-block; padding: 0.25rem 0.6rem; border-radius: 50px; font-size: 0.75rem; font-weight: 600; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-warning { background: #fef3c7; color: #92400e; }

/* Pulsanti e Form */
.btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.55rem 1.1rem; border-radius: 6px; font-weight: 600; text-decoration: none; cursor: pointer; border: none; font-size: 0.9rem; transition: background 0.2s, transform 0.1s; }
.btn-primary { background-color: var(--bg-secondary); color: #fff; }
.btn-primary:hover { background-color: var(--bg-primary); }
.btn-accent { background-color: var(--accent); color: #fff; }
.btn-accent:hover { background-color: var(--accent-hover); }
.btn-danger { background-color: var(--danger); color: #fff; }
.btn-danger:hover { background-color: #dc2626; }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8rem; }

.form-card { background: var(--card-bg); padding: 2rem; border-radius: 8px; border: 1px solid var(--border-color); max-width: 700px; margin: 0 auto 2rem auto; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: 0.4rem; font-weight: 600; font-size: 0.9rem; color: var(--text-dark); }
.form-control { width: 100%; padding: 0.6rem 0.8rem; border: 1px solid var(--border-color); border-radius: 6px; font-size: 0.95rem; }
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0, 173, 181, 0.15); }
.form-control[readonly] { background-color: #f1f5f9; cursor: not-allowed; }

/* Filtro Alfabeto */
.alphabet-bar { display: flex; flex-wrap: wrap; gap: 0.3rem; margin-bottom: 1.5rem; }
.alphabet-bar a { padding: 0.4rem 0.7rem; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 4px; color: var(--bg-primary); text-decoration: none; font-weight: 600; font-size: 0.85rem; }
.alphabet-bar a:hover, .alphabet-bar a.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* Generatore Password Box */
.pass-gen-box { display: flex; gap: 0.5rem; margin-top: 0.5rem; }