/* ==========================================================================
   AIA Test Manager - Foglio di stile principale
   CSS puro, nessun framework esterno.
   ========================================================================== */

:root {
    --aia-blu: #003087;
    --aia-blu-dark: #001f5c;
    --aia-oro: #FFD700;
    --aia-oro-dark: #e6c200;
    --aia-bianco: #ffffff;
    --aia-grigio: #f4f6f9;

    --testo: #1e2733;
    --testo-muto: #6b7684;
    --bordo: #e2e8f0;
    --ombra: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .06);
    --ombra-lg: 0 10px 25px rgba(0, 0, 0, .10);
    --radius: 10px;
    --radius-sm: 6px;

    --success: #1a9c54;
    --success-bg: #e6f6ec;
    --danger: #d13b3b;
    --danger-bg: #fbeaea;
    --warning: #c98a1a;
    --warning-bg: #fdf3e0;
    --info: #1c72c9;
    --info-bg: #e7f1fb;

    --sidebar-w: 240px;
    --navbar-h: 60px;
}

/* ---- Reset base ---- */
*,
*::before,
*::after { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--aia-grigio);
    color: var(--testo);
    font-size: 15px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 { margin: 0 0 .6em; color: var(--aia-blu-dark); font-weight: 700; line-height: 1.25; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.1rem; }

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar {
    height: var(--navbar-h);
    background: linear-gradient(90deg, var(--aia-blu-dark), var(--aia-blu));
    color: var(--aia-bianco);
    display: flex;
    align-items: center;
    padding: 0 20px;
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    box-shadow: var(--ombra);
}

.navbar__brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--aia-bianco);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: .3px;
}
.navbar__brand:hover { text-decoration: none; }

.navbar__logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--aia-bianco);
    padding: 2px;
    object-fit: cover;
}

.navbar__brand small {
    display: block;
    font-size: .68rem;
    font-weight: 400;
    color: var(--aia-oro);
    letter-spacing: .5px;
}

.navbar__spacer { flex: 1; }

.navbar__user {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: .9rem;
}
.navbar__user a { color: var(--aia-oro); }

.navbar__toggle {
    display: block; /* visibile sia su desktop (comprimi sidebar) sia su mobile (drawer) */
    background: transparent;
    border: 0;
    color: var(--aia-bianco);
    font-size: 1.5rem;
    cursor: pointer;
    margin-right: 8px;
}

/* Comprimi sidebar su desktop per una vista più ampia */
@media (min-width: 769px) {
    body.sidebar-collapsed .sidebar { transform: translateX(-100%); }
    body.sidebar-collapsed .content { margin-left: 0; }
    body.sidebar-collapsed .app-footer { margin-left: 0; }
    .sidebar { transition: transform .2s ease; }
}

/* ==========================================================================
   Layout con sidebar
   ========================================================================== */
.layout {
    display: flex;
    min-height: 100vh;
    padding-top: var(--navbar-h);
}

.sidebar {
    width: var(--sidebar-w);
    background: var(--aia-bianco);
    border-right: 1px solid var(--bordo);
    position: fixed;
    top: var(--navbar-h);
    bottom: 0;
    left: 0;
    overflow-y: auto;
    padding: 16px 0;
    z-index: 90;
}

.sidebar__section {
    padding: 8px 20px 4px;
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .8px;
    color: var(--testo-muto);
    font-weight: 700;
}

.sidebar a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: var(--testo);
    font-weight: 500;
    border-left: 3px solid transparent;
}
.sidebar a:hover { background: var(--aia-grigio); text-decoration: none; }
.sidebar a.active {
    background: var(--info-bg);
    color: var(--aia-blu);
    border-left-color: var(--aia-oro);
    font-weight: 600;
}
.sidebar a .ico { width: 20px; text-align: center; }

.content {
    flex: 1;
    margin-left: var(--sidebar-w);
    padding: 24px 28px 60px;
    min-width: 0;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

/* Layout a due colonne generico */
.cols-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
    background: var(--aia-bianco);
    border: 1px solid var(--bordo);
    border-radius: var(--radius);
    box-shadow: var(--ombra);
    margin-bottom: 20px;
}
.card__header {
    padding: 14px 18px;
    border-bottom: 1px solid var(--bordo);
    font-weight: 700;
    color: var(--aia-blu-dark);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.card__body { padding: 18px; }
.card__body--flush { padding: 0; }

/* Stat cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--aia-bianco);
    border: 1px solid var(--bordo);
    border-radius: var(--radius);
    box-shadow: var(--ombra);
    padding: 18px 20px;
    border-top: 4px solid var(--aia-blu);
}
.stat-card--oro { border-top-color: var(--aia-oro); }
.stat-card--success { border-top-color: var(--success); }
.stat-card--info { border-top-color: var(--info); }
.stat-card--danger { border-top-color: var(--danger); }
.stat-card--warning { border-top-color: var(--warning); }
.stat-card__value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--aia-blu-dark);
    line-height: 1;
}
.stat-card__label {
    color: var(--testo-muto);
    font-size: .85rem;
    margin-top: 6px;
    text-transform: uppercase;
    letter-spacing: .4px;
}

/* ==========================================================================
   Tabelle
   ========================================================================== */
.table-wrap { overflow-x: auto; }
table.table {
    width: 100%;
    border-collapse: collapse;
    font-size: .9rem;
}
table.table th,
table.table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--bordo);
    white-space: nowrap;
}
table.table thead th {
    background: var(--aia-grigio);
    color: var(--aia-blu-dark);
    font-weight: 700;
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .4px;
}
table.table tbody tr:hover { background: #fafbfd; }
table.table td.wrap { white-space: normal; }
.table-empty {
    padding: 30px;
    text-align: center;
    color: var(--testo-muto);
}

/* ==========================================================================
   Form
   ========================================================================== */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--aia-blu-dark);
    font-size: .88rem;
}
.form-control,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="search"],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--bordo);
    border-radius: var(--radius-sm);
    font-size: .95rem;
    font-family: inherit;
    background: var(--aia-bianco);
    color: var(--testo);
    transition: border-color .15s, box-shadow .15s;
}
.form-control:focus,
input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--aia-blu);
    box-shadow: 0 0 0 3px rgba(0, 48, 135, .12);
}
textarea { min-height: 90px; resize: vertical; }
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.form-hint { font-size: .8rem; color: var(--testo-muto); margin-top: 4px; }

/* ==========================================================================
   Bottoni
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: .9rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    line-height: 1;
    transition: background .15s, box-shadow .15s, transform .05s;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--aia-blu); color: var(--aia-bianco); }
.btn--primary:hover { background: var(--aia-blu-dark); }
.btn--oro { background: var(--aia-oro); color: var(--aia-blu-dark); }
.btn--oro:hover { background: var(--aia-oro-dark); }
.btn--ghost { background: transparent; color: var(--aia-blu); border-color: var(--bordo); }
.btn--ghost:hover { background: var(--aia-grigio); }
.btn--danger { background: var(--danger); color: #fff; }
.btn--danger:hover { background: #b32e2e; }
.btn--sm { padding: 6px 12px; font-size: .82rem; }
.btn--block { width: 100%; justify-content: center; }
.btn-group { display: flex; gap: 10px; flex-wrap: wrap; }

/* ==========================================================================
   Badges
   ========================================================================== */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: .74rem;
    font-weight: 700;
    letter-spacing: .3px;
    line-height: 1.4;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-neutro { background: #eceff3; color: var(--testo-muto); }
.badge-blu { background: var(--aia-blu); color: #fff; }
.badge-oro { background: var(--aia-oro); color: var(--aia-blu-dark); }

/* ==========================================================================
   Alert / Flash
   ========================================================================== */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    border: 1px solid transparent;
    font-size: .9rem;
    display: flex;
    align-items: center;
    gap: 10px;
}
.alert-success { background: var(--success-bg); color: #14733e; border-color: #bfe6cd; }
.alert-error, .alert-danger { background: var(--danger-bg); color: #a52a2a; border-color: #f0c2c2; }
.alert-warning { background: var(--warning-bg); color: #8a5e10; border-color: #f0dcb0; }
.alert-info { background: var(--info-bg); color: #17548f; border-color: #c3ddf5; }

/* ==========================================================================
   Pagina di login
   ========================================================================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: linear-gradient(135deg, var(--aia-blu-dark) 0%, var(--aia-blu) 60%, #0a47b0 100%);
}
.login-card {
    background: var(--aia-bianco);
    border-radius: 16px;
    box-shadow: var(--ombra-lg);
    width: 100%;
    max-width: 400px;
    padding: 36px 32px 32px;
    text-align: center;
}
.login-logo {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    object-fit: cover;
    margin: -78px auto 12px;
    background: var(--aia-bianco);
    box-shadow: var(--ombra-lg);
    border: 4px solid var(--aia-bianco);
    display: block;
}
.login-card h1 { font-size: 1.4rem; margin-bottom: 2px; }
.login-card .subtitle { color: var(--testo-muto); font-size: .88rem; margin-bottom: 24px; }
.login-card form { text-align: left; }
.login-card .btn { margin-top: 6px; }
.login-footer {
    margin-top: 22px;
    font-size: .78rem;
    color: var(--testo-muto);
}

/* Wrapper per far "salire" il logo fuori dalla card */
.login-shell {
    width: 100%;
    max-width: 400px;
    margin-top: 78px;
}

/* ==========================================================================
   Utility
   ========================================================================== */
.text-muted { color: var(--testo-muto); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: 16px; }
.flex { display: flex; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: 8px; }
.w-100 { width: 100%; }
.hidden { display: none; }

/* Footer area admin */
.app-footer {
    margin-left: var(--sidebar-w);
    padding: 16px 28px;
    color: var(--testo-muto);
    font-size: .8rem;
    border-top: 1px solid var(--bordo);
    background: var(--aia-bianco);
}

/* Overlay scuro dietro la sidebar (mobile) */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: var(--navbar-h); left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, .45);
    z-index: 85;
}

/* ==========================================================================
   Responsive - breakpoint 768px
   ========================================================================== */
@media (max-width: 768px) {
    .navbar__toggle { display: block; }
    .navbar__brand small { display: none; }

    .sidebar {
        transform: translateX(-100%);
        transition: transform .2s ease;
        box-shadow: var(--ombra-lg);
    }
    body.sidebar-open .sidebar { transform: translateX(0); }
    body.sidebar-open .sidebar-overlay { display: block; }

    .content { margin-left: 0; padding: 18px 16px 48px; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .cols-2 { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr !important; }

    .navbar__user span.nome { display: none; }

    /* Bottoni touch-friendly: altezza minima 44px */
    .btn { min-height: 44px; padding: 12px 18px; }
    .btn--sm { min-height: 40px; }
    .sidebar a { padding: 14px 20px; }
    input, select, textarea, .form-control { min-height: 44px; }

    /* Tabelle: scroll orizzontale garantito */
    .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table.table { min-width: 560px; }

    .page-header { flex-direction: column; align-items: flex-start; }
    .app-footer { margin-left: 0; }
}

@media (max-width: 460px) {
    .stats-grid { grid-template-columns: 1fr; }
}