:root {
    --gpu-blu: #36648b;          /* colore del login desktop */
    --gpu-blu-chiaro: #4682b4;
    --gpu-giallo: #ffd84d;
    --gpu-bordo: #d9dee4;
    --gpu-sfondo: #f4f6f8;
    --gpu-testo-tenue: #66707a;
}

html, body {
    margin: 0;
    height: 100%;
    font-family: "Segoe UI", system-ui, sans-serif;
    font-size: 14px;
    background: var(--gpu-sfondo);
}

/* ---- Login ---- */
.gpu-login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 16px;
    box-sizing: border-box;
    background: linear-gradient(160deg, #2b5170, var(--gpu-blu));
}

.gpu-login-card {
    width: 100%;
    max-width: 380px;
    background: var(--gpu-blu);
    color: #fff;
    border-radius: 14px;
    padding: 28px 30px 30px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, .3);
    box-sizing: border-box;
}

.gpu-login-card h1 {
    font-size: 20px;
    font-weight: 400;
    color: var(--gpu-giallo);
    margin: 0 0 22px;
}

.gpu-login-card label {
    display: block;
    margin: 14px 0 6px;
}

.gpu-login-card input {
    width: 100%;
    box-sizing: border-box;
    padding: 9px 10px;
    font-size: 15px;
    border: 1px solid transparent;
    border-radius: 6px;
}

.gpu-login-card input:focus {
    outline: 2px solid var(--gpu-giallo);
}

.gpu-login-card button {
    margin-top: 24px;
    width: 100%;
    padding: 10px;
    font-size: 16px;
    color: #fff;
    background: var(--gpu-blu-chiaro);
    border: 0;
    border-radius: 6px;
    cursor: pointer;
}

.gpu-login-card button:hover { background: #64a0d2; }

.gpu-login-card .validation-message,
.gpu-login-error {
    color: #ffd2d2;
    margin-top: 6px;
}

.gpu-login-error {
    margin-top: 16px;
    padding: 8px 10px;
    background: rgba(160, 0, 0, .35);
    border-radius: 6px;
}

/* ---- Struttura ---- */
.gpu-shell {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.gpu-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 16px;
    background: var(--gpu-blu);
    color: #fff;
    min-height: 48px;
    flex-wrap: wrap;
}

.gpu-brand {
    font-size: 18px;
    font-weight: 600;
    color: var(--gpu-giallo);
    white-space: nowrap;
}

.gpu-brand span {
    font-size: 13px;
    font-weight: 400;
    color: #dbe7f1;
    margin-left: 6px;
}

.gpu-nav { flex: 1; }
.gpu-nav.dxbl-menu { background: transparent; }
.gpu-nav .dxbl-menu-item .dxbl-btn,
.gpu-nav .dxbl-menu-item a { color: #fff !important; }

.gpu-user {
    display: flex;
    align-items: center;
    gap: 12px;
    white-space: nowrap;
}

.gpu-user form { margin: 0; }

.gpu-btn-link {
    background: none;
    border: 1px solid rgba(255, 255, 255, .5);
    color: #fff;
    border-radius: 4px;
    padding: 3px 12px;
    cursor: pointer;
}

.gpu-btn-link:hover { background: rgba(255, 255, 255, .15); }

.gpu-main {
    flex: 1;
    min-height: 0;
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ---- Componenti comuni ---- */
.gpu-card {
    background: #fff;
    border: 1px solid var(--gpu-bordo);
    border-radius: 8px;
    padding: 14px 16px;
}

.gpu-card h2 {
    font-size: 15px;
    margin: 0 0 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.gpu-muted { color: var(--gpu-testo-tenue); }
.gpu-msg { padding: 24px; }

.gpu-badge {
    background: #c0392b;
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    border-radius: 10px;
    padding: 2px 8px;
}

.gpu-btn {
    display: inline-block;
    margin-top: 6px;
    padding: 6px 14px;
    background: var(--gpu-blu-chiaro);
    color: #fff;
    border-radius: 4px;
    text-decoration: none;
}

.gpu-list { list-style: none; margin: 0; padding: 0; }
.gpu-list li {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    padding: 5px 0;
    border-bottom: 1px solid #eef1f4;
}

.gpu-info { display: grid; grid-template-columns: 200px 1fr; gap: 6px 12px; margin: 0; }
.gpu-info dt { color: var(--gpu-testo-tenue); }
.gpu-info dd { margin: 0; }
.gpu-pre { white-space: pre-wrap; }

/* ---- Home ---- */
.gpu-home {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 12px;
    align-items: start;
}

.gpu-home-side { display: flex; flex-direction: column; gap: 12px; }
.gpu-row-unread td { font-weight: 600; }

/* ---- Prestazioni ---- */
.gpu-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 20px;
}

.gpu-toolbar-sub { font-size: 13px; }

.gpu-toolbar-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}

.gpu-toolbar-right { margin-left: auto; }
.gpu-lbl { white-space: nowrap; }
.gpu-w120 { width: 120px !important; flex: 0 0 auto; }
.gpu-w130 { width: 135px !important; flex: 0 0 auto; }
.gpu-w190 { width: 190px !important; flex: 0 0 auto; }
.gpu-total { font-weight: 600; min-width: 70px; }

.gpu-grid-prestazioni {
    flex: 1;
    min-height: 300px;
}

.gpu-cell-dettaglio { background-color: #add8e6 !important; }
.gpu-cell-vuota { background-color: #e6e6e6 !important; }

@media (max-width: 900px) {
    .gpu-home { grid-template-columns: 1fr; }
    .gpu-toolbar-right { margin-left: 0; }
    .gpu-brand span { display: none; }
}

/* ---- Errori Blazor ---- */
.blazor-error-boundary {
    background: #b32121;
    padding: 1rem;
    color: white;
}

.blazor-error-boundary::after { content: "Si è verificato un errore."; }