:root {
    --colore-primario: #1d5f8a;
    --colore-primario-scuro: #164a6c;
    --colore-sfondo: #f4f6f8;
    --colore-bordo: #d9dee3;
    --colore-testo: #23303a;
    --colore-errore: #b3261e;
    --colore-errore-bg: #fdecea;
    --colore-info-bg: #e8f1f8;
}

* { box-sizing: border-box; }

body {
    font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    color: var(--colore-testo);
    background: var(--colore-sfondo);
    margin: 0;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 20px 60px;
}

/* Topbar */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--colore-primario);
    color: white;
    padding: 12px 20px;
}
.topbar a { color: white; }
.breadcrumb { margin-left: 12px; font-weight: normal; opacity: 0.95; }
.link-small { font-size: 0.85em; text-decoration: underline; opacity: 0.85; }

/* Login */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}
.login-box {
    background: white;
    padding: 32px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    width: 320px;
}
.login-box h1 { margin: 0 0 4px; font-size: 1.4em; }
.login-box .subtitle { margin: 0 0 20px; color: #666; font-size: 0.9em; }
.login-box label { display: block; margin-bottom: 14px; font-size: 0.9em; }
.login-box input { width: 100%; padding: 8px; margin-top: 4px; border: 1px solid var(--colore-bordo); border-radius: 4px; }
.login-box button { width: 100%; padding: 10px; }

/* Card selezione impianto / ditta */
.card-list { display: flex; flex-direction: column; gap: 10px; max-width: 500px; }
.card-item {
    display: flex;
    justify-content: space-between;
    padding: 14px 18px;
    background: white;
    border: 1px solid var(--colore-bordo);
    border-radius: 6px;
    text-decoration: none;
    color: var(--colore-testo);
}
.card-item:hover { border-color: var(--colore-primario); background: var(--colore-info-bg); }
.card-title { font-weight: 600; }
.card-sub { color: #777; }

/* Filtri */
.filtri { background: white; padding: 16px; border-radius: 6px; border: 1px solid var(--colore-bordo); margin-bottom: 20px; }
.filtri-riga { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; }
.filtri-riga label { display: flex; flex-direction: column; font-size: 0.85em; gap: 4px; }
.filtri-riga select, .filtri-riga input { padding: 7px; border: 1px solid var(--colore-bordo); border-radius: 4px; }
.filtri-riga button { padding: 9px 18px; }

button {
    background: var(--colore-primario);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.95em;
    padding: 9px 16px;
}
button:hover { background: var(--colore-primario-scuro); }
button:disabled { background: #a9b6bd; cursor: not-allowed; }

/* Tabella */
.tabella-causali { width: 100%; border-collapse: collapse; background: white; }
.tabella-causali th, .tabella-causali td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--colore-bordo);
    text-align: left;
    font-size: 0.9em;
}
.tabella-causali thead th { background: #eef2f5; }
.col-check { width: 34px; text-align: center; }
.col-importo { text-align: right; white-space: nowrap; }
.nuovo-pagamento td { border-top: 2px solid var(--colore-primario); }
.pagamento-badge { font-size: 0.75em; color: #888; }
tfoot td { border-top: 2px solid var(--colore-testo); border-bottom: none; }

/* Riepilogo selezione */
.riepilogo-selezione {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    padding: 14px 18px;
    background: white;
    border: 1px solid var(--colore-bordo);
    border-radius: 6px;
    flex-wrap: wrap;
    gap: 12px;
}
.riepilogo-box { font-size: 0.95em; }
.azioni-box { display: flex; gap: 10px; }
#btn-stampa { background: #6c7a86; }
#btn-stampa:hover { background: #55606a; }

/* Alert */
.alert { margin: 14px 0; padding: 12px 16px; border-radius: 6px; font-size: 0.92em; }
.alert-error { background: var(--colore-errore-bg); color: var(--colore-errore); border: 1px solid #f3c2be; }
.alert-info { background: var(--colore-info-bg); color: var(--colore-primario-scuro); border: 1px solid #bcdcee; }
.alert-success { background: #e6f4ea; color: #1e7a34; border: 1px solid #b6e0c1; }

.only-print { display: none; }

/* Stampa */
@media print {
    .no-print { display: none !important; }
    .only-print { display: block; }
    body { background: white; }
    .container { max-width: 100%; padding: 0; }
    .topbar { display: none; }
    .tabella-causali { font-size: 12px; }
}