:root {
    --accent: #1f4e5f;
    --bg: #f4f6f7;
    --card-bg: #ffffff;
    --border: #dde3e5;
    --text: #1f2933;
    --muted: #6b7680;
}
* { box-sizing: border-box; }
body {
    font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
}
header.topbar {
    background: var(--accent);
    color: #fff;
    padding: 20px 28px;
    position: relative;
}
header.topbar h1 { margin: 0 0 4px; font-size: 1.4rem; }
header.topbar .muted { color: #cfe0e6; margin: 0; }
header.topbar .muted code { color: #fff; }
header.topbar .logout {
    position: absolute; top: 20px; right: 28px;
    color: #fff; text-decoration: none; border: 1px solid rgba(255,255,255,.5);
    padding: 6px 12px; border-radius: 6px; font-size: .85rem;
}
main { max-width: 860px; margin: 24px auto; padding: 0 16px; }
.admin-nav {
    max-width: 860px; margin: 0 auto; padding: 10px 16px;
    display: flex; flex-wrap: wrap; gap: 4px 18px; align-items: center;
    border-bottom: 1px solid var(--border); font-size: .9rem;
}
.admin-nav a { color: var(--muted); text-decoration: none; padding: 4px 2px; }
.admin-nav a:hover { color: var(--accent); }
.admin-nav a.active { color: var(--accent); font-weight: 600; border-bottom: 2px solid var(--accent); }
.admin-nav-user { margin-left: auto; color: var(--muted); font-size: .85rem; }
.admin-nav-user a { color: var(--accent); }
table.data-table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: .85rem; }
table.data-table th, table.data-table td { border-bottom: 1px solid var(--border); padding: 7px 8px; text-align: left; vertical-align: middle; }
table.data-table th { color: var(--muted); font-weight: 600; }
table.data-table select, table.data-table input[type=number] { padding: 4px 6px; border: 1px solid var(--border); border-radius: 5px; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: .75rem; font-weight: 600; }
.badge.active { background: #e3f3e6; color: #1f6b2e; }
.badge.inactive { background: #f3e3e3; color: #8a1f1f; }
.badge.totp-on { background: #e3ecf3; color: #1f4e8a; }
.badge.totp-off { background: #f3ecdf; color: #8a5a1f; }
.inline-form { display: inline-flex; gap: 6px; align-items: center; }
form.new-item-form { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; margin-top: 14px; }
form.new-item-form > div { display: flex; flex-direction: column; gap: 4px; }
form.new-item-form label { font-size: .8rem; color: var(--muted); }
form.new-item-form input, form.new-item-form select { padding: 7px 9px; border: 1px solid var(--border); border-radius: 6px; }
.btn-small { padding: 4px 10px; font-size: .8rem; }
.btn-danger { background: #b3261e; }
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px 24px;
    margin-bottom: 20px;
}
.card h2 { margin-top: 0; font-size: 1.1rem; color: var(--accent); }
.muted { color: var(--muted); font-size: .9rem; }
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 10px 20px;
    margin: 14px 0;
}
.stats-grid div { font-size: .85rem; color: var(--muted); }
.stats-grid strong { display: block; font-size: 1.2rem; color: var(--text); }
button {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 9px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: .9rem;
}
button.secondary { background: #fff; color: var(--accent); border: 1px solid var(--accent); }
.btn-link {
    display: inline-flex; align-items: center;
    background: #fff; color: var(--accent); border: 1px solid var(--accent);
    padding: 9px 16px; border-radius: 6px; font-size: .9rem; text-decoration: none;
}
button:disabled { opacity: .55; cursor: not-allowed; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 10px; }
.progress { background: #e9edee; border-radius: 6px; height: 10px; overflow: hidden; margin: 10px 0 6px; }
.progress-bar { background: var(--accent); height: 100%; width: 0%; transition: width .3s; }
.log { font-size: .85rem; color: var(--muted); min-height: 1.2em; }
table.dup-table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: .85rem; }
table.dup-table th, table.dup-table td { border-bottom: 1px solid var(--border); padding: 6px 8px; text-align: left; }
table.dup-table th { color: var(--muted); font-weight: 600; }

body.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px 0; }
.login-box {
    background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px;
    padding: 32px; width: 300px; display: flex; flex-direction: column; gap: 10px;
}
.login-box h1 { margin: 0; font-size: 1.2rem; color: var(--accent); }
.login-box input { padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; }
.login-box .error { color: #b3261e; font-size: .85rem; margin: 0; }
.login-box label { font-size: .85rem; color: var(--muted); margin-bottom: -4px; }

.totp-box { width: 340px; align-items: center; text-align: center; }
.totp-box p { text-align: left; width: 100%; }
#qrcode-container { display: flex; justify-content: center; margin: 6px 0; min-height: 40px; }
#qrcode { display: inline-block; }
.secret-code {
    font-family: "SFMono-Regular", Consolas, Menlo, monospace;
    font-size: 1.05rem; letter-spacing: 1px; background: var(--bg);
    border: 1px solid var(--border); border-radius: 6px; padding: 8px 10px;
    text-align: center; word-break: break-all;
}
.totp-box input#code {
    text-align: center; font-size: 1.3rem; letter-spacing: 4px;
    font-family: "SFMono-Regular", Consolas, Menlo, monospace;
}

/* Ricerca pubblica (ricerca.php / libro.php) */
.search-form { display: flex; gap: 10px; }
.search-form input[type=text] {
    flex: 1; padding: 10px 12px; border: 1px solid var(--border); border-radius: 6px; font-size: 1rem;
}
.result-list { display: flex; flex-direction: column; gap: 14px; margin-top: 14px; }
.result-card { border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; }
.result-card h3 { margin: 0 0 4px; font-size: 1.05rem; }
.result-card h3 a { color: var(--accent); text-decoration: none; }
.result-card h3 a:hover { text-decoration: underline; }
.result-meta { color: var(--muted); font-size: .85rem; margin: 4px 0; }
.book-detail-layout { display: flex; gap: 24px; flex-wrap: wrap; }
.book-cover {
    width: 160px; height: auto; border-radius: 6px; border: 1px solid var(--border);
    object-fit: cover; flex-shrink: 0;
}
.book-detail-layout > div:last-child { flex: 1; min-width: 240px; }
.book-description { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
.book-description h3 { margin-top: 0; font-size: 1rem; color: var(--accent); }

/* Vetrina casuale "stile catalogo" in cima a ricerca.php (CatalogShowcase) */
.showcase-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 16px; margin-top: 14px;
}
.showcase-item { text-align: center; }
.showcase-item a { color: inherit; text-decoration: none; display: block; }
.showcase-cover {
    width: 100%; aspect-ratio: 2 / 3; object-fit: cover; border-radius: 6px;
    border: 1px solid var(--border); background: var(--bg);
}
.showcase-title {
    display: block; margin-top: 6px; font-size: .8rem; font-weight: 600;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.showcase-creator { display: block; font-size: .75rem; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Ricerca avanzata catalogo (admin/catalogo.php) */
.filter-form { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: flex-end; }
.filter-form label { display: flex; flex-direction: column; gap: 4px; font-size: .8rem; color: var(--muted); }
.filter-form input[type=text], .filter-form select {
    padding: 7px 9px; border: 1px solid var(--border); border-radius: 6px; font-size: .9rem; min-width: 130px;
}
.table-scroll { overflow-x: auto; }
.path-cell { font-family: "SFMono-Regular", Consolas, Menlo, monospace; font-size: .8rem; color: var(--muted); word-break: break-all; }

/* Lettore integrato (admin/leggi.php) */
body.reader-page { display: flex; flex-direction: column; height: 100vh; margin: 0; overflow: hidden; }
.reader-topbar { padding: 10px 20px; flex: 0 0 auto; }
.reader-topbar h1.reader-title { margin: 0; font-size: 1.05rem; }
.reader-topbar .muted { margin: 0 0 2px; }
.reader-error {
    background: #fbeaea; color: #8a1f1f; border-bottom: 1px solid #e3b8b8;
    padding: 10px 20px; font-size: .9rem;
}
#reader-area { flex: 1 1 auto; min-height: 0; background: #fff; }
#reader-area iframe { border: none; }
.reader-toolbar {
    flex: 0 0 auto; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
    gap: 10px 20px; padding: 10px 20px; background: var(--card-bg); border-top: 1px solid var(--border);
}
.reader-toolbar-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.reader-toolbar button {
    background: #fff; color: var(--accent); border: 1px solid var(--accent);
    padding: 6px 12px; border-radius: 6px; font-size: .9rem; cursor: pointer;
}
.reader-toolbar button:disabled { opacity: .4; cursor: not-allowed; }
.reader-toolbar select, .reader-toolbar input[type=range] { vertical-align: middle; }
#reader-location { font-size: .85rem; min-width: 3em; text-align: center; }