/* =====================================================
   GESTIONALE CORSI - STILE
   Estetica: sobria, professionale, da strumento di lavoro
   ===================================================== */

:root {
    --c-bg:          #f4f3ef;
    --c-surface:     #ffffff;
    --c-border:      #d9d6cf;
    --c-border-soft: #e8e6e0;
    --c-text:        #1c1c1c;
    --c-text-soft:   #5a5a55;
    --c-text-muted:  #8b8a83;
    --c-accent:      #1f4d3f;   /* verde petrolio scuro */
    --c-accent-hover:#143329;
    --c-accent-soft: #e6efeb;
    --c-danger:      #a8341f;
    --c-success:     #2b7a4b;
    --c-warning:     #b07b1e;

    --radius:   4px;
    --radius-lg: 8px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow:    0 2px 8px rgba(0,0,0,0.06);

    --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--c-bg);
    color: var(--c-text);
    font-family: var(--font-sans);
    font-size: 14.5px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

/* ---------- LAYOUT ---------- */
.topbar {
    background: var(--c-text);
    color: #f4f3ef;
    padding: 14px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 3px solid var(--c-accent);
}
.topbar .brand {
    font-family: var(--font-serif);
    font-size: 19px;
    font-weight: 600;
    letter-spacing: -0.01em;
}
.topbar .brand small {
    display: block;
    font-family: var(--font-sans);
    font-size: 10.5px;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: #a8a69d;
    margin-top: 2px;
}
.topbar nav { display: flex; gap: 6px; align-items: center; }
.topbar nav a {
    color: #d9d6cf;
    padding: 7px 14px;
    border-radius: var(--radius);
    font-size: 13.5px;
    transition: background 0.15s;
}
.topbar nav a:hover { background: rgba(255,255,255,0.08); text-decoration: none; }
.topbar nav a.active { background: var(--c-accent); color: #fff; }
.topbar .user {
    font-size: 13px;
    color: #a8a69d;
    margin-left: 18px;
    padding-left: 18px;
    border-left: 1px solid #444;
}
.topbar .user a { color: #d9d6cf; margin-left: 10px; }

.main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 28px;
}

.page-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--c-border);
}
.page-head h1 {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 600;
    margin: 0;
    letter-spacing: -0.015em;
}
.page-head .sub {
    color: var(--c-text-muted);
    font-size: 13px;
    margin-top: 4px;
}

/* ---------- BOTTONI ---------- */
.btn {
    display: inline-block;
    padding: 8px 18px;
    border: 1px solid var(--c-border);
    background: var(--c-surface);
    color: var(--c-text);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 13.5px;
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
}
.btn:hover { background: var(--c-border-soft); text-decoration: none; }
.btn-primary {
    background: var(--c-accent);
    color: #fff;
    border-color: var(--c-accent);
}
.btn-primary:hover { background: var(--c-accent-hover); border-color: var(--c-accent-hover); color: #fff; }
.btn-danger {
    background: var(--c-surface);
    color: var(--c-danger);
    border-color: var(--c-border);
}
.btn-danger:hover { background: var(--c-danger); color: #fff; border-color: var(--c-danger); }
.btn-sm { padding: 5px 11px; font-size: 12.5px; }

/* ---------- CARDS ---------- */
.card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}
.card h2 {
    font-family: var(--font-serif);
    font-size: 18px;
    margin: 0 0 16px 0;
    font-weight: 600;
}

/* ---------- DASHBOARD SEZIONI ---------- */
.sezioni {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px;
    margin-bottom: 30px;
}
.sezione-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 26px;
    text-decoration: none;
    color: var(--c-text);
    transition: all 0.2s;
    display: block;
    position: relative;
    overflow: hidden;
}
.sezione-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background: var(--c-accent);
    transition: width 0.2s;
}
.sezione-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    text-decoration: none;
}
.sezione-card:hover::before { width: 8px; }
.sezione-card .label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--c-text-muted);
    margin-bottom: 8px;
}
.sezione-card h3 {
    font-family: var(--font-serif);
    font-size: 22px;
    margin: 0 0 6px 0;
    font-weight: 600;
}
.sezione-card .descr {
    color: var(--c-text-soft);
    font-size: 13px;
}

/* ---------- FORM ---------- */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px 20px;
}
.form-grid .full { grid-column: 1 / -1; }

.field { display: flex; flex-direction: column; gap: 5px; }
.field label {
    font-size: 12px;
    font-weight: 500;
    color: var(--c-text-soft);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="date"],
.field input[type="password"],
.field input[type="file"],
.field select,
.field textarea {
    padding: 9px 11px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 14px;
    background: var(--c-surface);
    color: var(--c-text);
    transition: border-color 0.15s, box-shadow 0.15s;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
    outline: none;
    border-color: var(--c-accent);
    box-shadow: 0 0 0 3px var(--c-accent-soft);
}
.field textarea { resize: vertical; min-height: 80px; }

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 8px;
    padding: 14px;
    background: var(--c-bg);
    border-radius: var(--radius);
    border: 1px solid var(--c-border-soft);
}
.checkbox-grid label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13.5px;
    cursor: pointer;
    padding: 4px;
    text-transform: none;
    letter-spacing: 0;
    color: var(--c-text);
}
.checkbox-grid input[type="checkbox"] { accent-color: var(--c-accent); }

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--c-border-soft);
}

/* ---------- FILTRI ---------- */
.filtri {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr auto;
    gap: 10px;
    align-items: end;
    margin-bottom: 18px;
    padding: 16px;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
}

/* ---------- TABELLA ---------- */
.tabella-wrap {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.tabella {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}
.tabella th {
    text-align: left;
    padding: 12px 14px;
    background: var(--c-bg);
    border-bottom: 1px solid var(--c-border);
    font-weight: 600;
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--c-text-soft);
}
.tabella td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--c-border-soft);
}
.tabella tbody tr:hover { background: #faf9f6; }
.tabella tbody tr:last-child td { border-bottom: none; }

.badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--c-accent-soft);
    color: var(--c-accent);
    border-radius: 3px;
    font-size: 11.5px;
    font-weight: 500;
    margin: 1px 2px 1px 0;
}

.actions-cell { white-space: nowrap; text-align: right; }
.actions-cell a { margin-left: 4px; }

.empty {
    text-align: center;
    padding: 50px 20px;
    color: var(--c-text-muted);
    font-style: italic;
}

/* ---------- MESSAGGI ---------- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 18px;
    font-size: 13.5px;
    border-left: 3px solid;
}
.alert-success { background: #eaf4ee; border-color: var(--c-success); color: #1d5234; }
.alert-error   { background: #f7e8e4; border-color: var(--c-danger);  color: #7a2415; }
.alert-info    { background: #eaf0f5; border-color: #2c5680;          color: #1c3a55; }

/* ---------- LOGIN ---------- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at 20% 30%, rgba(31,77,63,0.04) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(31,77,63,0.05) 0%, transparent 50%),
        var(--c-bg);
}
.login-box {
    width: 100%;
    max-width: 380px;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 38px 34px;
    box-shadow: var(--shadow);
}
.login-box .logo {
    text-align: center;
    margin-bottom: 26px;
}
.login-box .logo .name {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 600;
    color: var(--c-text);
}
.login-box .logo .tag {
    font-size: 10.5px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--c-text-muted);
    margin-top: 4px;
}
.login-box .field { margin-bottom: 14px; }
.login-box .btn { width: 100%; padding: 11px; font-size: 14px; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 800px) {
    .form-grid { grid-template-columns: 1fr; }
    .filtri { grid-template-columns: 1fr; }
    .topbar { flex-direction: column; gap: 12px; align-items: stretch; }
    .topbar nav { flex-wrap: wrap; }
    .main { padding: 18px; }
}