/* =============================================================================
   gestadmin/assets/css/app.css | 15/02/2026 | v1.1

   SCOPO:
     Foglio stile unico per GestAdmin. NO CSS inline nel codice PHP.
     Layout responsive, contenuto centrato in alto.

   STRUTTURA:
     1. Reset e variabili
     2. Layout (container, sidebar, main)
     3. Componenti (card, btn, form, table, flash, badge)
     4. Pagina login
     5. Responsive (breakpoints 1024, 768, 480)
   ============================================================================= */

/* =============================================================================
   1. RESET E VARIABILI
   ============================================================================= */

:root {
    --bg: #f4f5f7;
    --card: #ffffff;
    --sidebar-bg: #1e293b;
    --sidebar-text: #cbd5e1;
    --sidebar-active: #3b82f6;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --warning: #f59e0b;
    --success: #16a34a;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 6px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --sidebar-w: 240px;
    --content-max: 1200px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; }

/* =============================================================================
   2. LAYOUT
   ============================================================================= */

.app-container {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-w);
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    overflow-y: auto;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 20px 16px 12px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
    font-size: 18px;
    color: #fff;
    margin: 0;
}

.sidebar-header small {
    color: var(--text-muted);
    font-size: 11px;
}

.sidebar-nav {
    flex: 1;
    padding: 8px 0;
}

.sidebar-nav ul { list-style: none; }

.sidebar-nav li a {
    display: block;
    padding: 9px 16px;
    color: var(--sidebar-text);
    font-size: 13px;
    transition: background 0.2s, color 0.2s;
}

.sidebar-nav li a:hover {
    background: rgba(255,255,255,0.08);
    text-decoration: none;
    color: #fff;
}

.nav-section {
    padding: 18px 16px 6px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    font-weight: 600;
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
}

.sidebar-footer a { color: var(--sidebar-text); font-size: 12px; }

/* Overlay per mobile (quando sidebar aperta) */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 99;
}

.sidebar-overlay.active { display: block; }

/* --- Main content --- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-w);
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.topbar {
    width: 100%;
    max-width: var(--content-max);
    background: var(--card);
    padding: 14px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar h1 {
    font-size: 18px;
    font-weight: 600;
    flex: 1;
    margin: 0;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text);
    padding: 4px;
}

/* Contenuto centrato in alto */
.content {
    width: 100%;
    max-width: var(--content-max);
    padding: 24px;
}

/* =============================================================================
   3. COMPONENTI
   ============================================================================= */

/* --- Section title --- */
.section-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
}

/* --- Card --- */
.card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    border: 1px solid var(--border);
}

.card h3 {
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-bottom: 8px;
}

.card-number {
    display: block;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.card-warning { color: var(--warning); }

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
    cursor: pointer;
    background: var(--card);
    color: var(--text);
    transition: background 0.2s;
    text-align: center;
    line-height: 1.4;
}

.btn:hover { background: var(--bg); text-decoration: none; }

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-hover); color: #fff; }

.btn-danger {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}
.btn-danger:hover { background: var(--danger-hover); color: #fff; }

.btn-success {
    background: var(--success);
    color: #fff;
    border-color: var(--success);
}

.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-block { display: block; width: 100%; }

/* --- Forms --- */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 4px;
    color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    background: #fff;
    color: var(--text);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.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(37, 99, 235, 0.1);
}

.form-group textarea { min-height: 100px; resize: vertical; }

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.form-actions {
    margin-top: 24px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.form-section {
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.form-section h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text);
}

/* --- Tables --- */
.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: var(--bg);
    padding: 10px 12px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

.data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

.data-table tr:last-child td { border-bottom: none; }

.data-table tr:hover { background: rgba(37, 99, 235, 0.03); }

.data-table .actions { white-space: nowrap; }

.data-table .actions a {
    margin-right: 8px;
    font-size: 12px;
}

.data-table .text-right { text-align: right; }
.data-table .text-center { text-align: center; }

.data-table tfoot td {
    font-weight: 600;
    background: var(--bg);
    border-top: 2px solid var(--border);
}

/* --- Paginazione --- */
.pagination {
    display: flex;
    gap: 4px;
    align-items: center;
    margin-top: 16px;
    font-size: 13px;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card);
}

.pagination a:hover {
    background: var(--bg);
    text-decoration: none;
}

.pagination .current {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* --- Flash messages --- */
.flash {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin: 0 24px 16px;
    font-size: 13px;
    border: 1px solid;
    max-width: var(--content-max);
    width: 100%;
}

.flash-success { background: #f0fdf4; color: #166534; border-color: #bbf7d0; }
.flash-error   { background: #fef2f2; color: #991b1b; border-color: #fecaca; }
.flash-warning { background: #fffbeb; color: #92400e; border-color: #fde68a; }
.flash-info    { background: #eff6ff; color: #1e40af; border-color: #bfdbfe; }

/* --- Badge --- */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}

.badge-success { background: #dcfce7; color: #166534; }
.badge-danger  { background: #fee2e2; color: #991b1b; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-info    { background: #dbeafe; color: #1e40af; }

.badge-messaggi {
    background: var(--danger);
    color: #fff;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.badge-messaggi:hover { text-decoration: none; opacity: 0.9; }

/* --- Frase benvenuto --- */
.frase-benvenuto {
    font-style: italic;
    color: var(--text-muted);
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
}

/* --- Toolbar (filtri, ricerca) --- */
.toolbar {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.toolbar input[type="search"],
.toolbar input[type="text"],
.toolbar select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
    min-width: 200px;
    background: #fff;
}

.toolbar .spacer { flex: 1; }

/* --- Stato vuoto --- */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-muted);
}

.empty-state p {
    font-size: 15px;
    margin-bottom: 16px;
}

/* =============================================================================
   4. PAGINA LOGIN
   ============================================================================= */

.login-page {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 10vh;
    min-height: 100vh;
    background: var(--sidebar-bg);
}

.login-container {
    background: var(--card);
    padding: 40px;
    border-radius: 8px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    text-align: center;
}

.login-container h1 {
    font-size: 24px;
    margin-bottom: 4px;
}

.login-subtitle {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 24px;
}

.login-container form { text-align: left; }

.login-version {
    margin-top: 20px;
    font-size: 11px;
    color: var(--text-muted);
}

/* =============================================================================
   5. RESPONSIVE
   ============================================================================= */

/* --- Tablet (<=1024px) --- */
@media (max-width: 1024px) {
    :root { --sidebar-w: 200px; }

    .content { padding: 20px; }
}

/* --- Mobile (<=768px) --- */
@media (max-width: 768px) {
    :root { --sidebar-w: 260px; }

    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .topbar {
        padding: 12px 16px;
    }

    .topbar h1 { font-size: 16px; }

    .content { padding: 16px; }

    .flash { margin: 0 16px 12px; }

    .dashboard-grid {
        grid-template-columns: 1fr 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .card-number { font-size: 26px; }
}

/* --- Small mobile (<=480px) --- */
@media (max-width: 480px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .login-page { padding-top: 5vh; }

    .login-container {
        margin: 16px;
        padding: 24px;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar input[type="search"],
    .toolbar input[type="text"],
    .toolbar select {
        min-width: unset;
        width: 100%;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn { width: 100%; }

    .topbar h1 { font-size: 15px; }
}

/* --- Print --- */
@media print {
    .sidebar, .topbar, .menu-toggle, .sidebar-overlay { display: none !important; }
    .main-content { margin-left: 0 !important; }
    .content { padding: 0; max-width: 100%; }
    .flash { display: none; }
    .btn { display: none; }
}