:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-hover: #475569;

    --accent-blue: #3b82f6;
    --accent-green: #22c55e;
    --accent-purple: #8b5cf6;
    --accent-orange: #f97316;
    --accent-red: #ef4444;
    --accent-yellow: #eab308;

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --border-color: #334155;
    --border-focus: #3b82f6;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.5);

    --header-height: 56px;
    --transition: 0.2s ease;
    --radius: 8px;
}

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

html, body {
    height: 100%;
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    background: var(--bg-primary);
    color: var(--text-primary);
}

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

/* ── Header ─────────────────────────────────────────────────────── */
.app-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    box-shadow: var(--shadow-md);
    z-index: 1000;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-brand h1 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.header-brand span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.header-nav { display: flex; align-items: center; gap: 8px; }

.nav-link {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all var(--transition);
    white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    text-decoration: none;
}

.header-right { display: flex; align-items: center; gap: 8px; }

/* Badge utente */
.user-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 5px 10px;
    font-size: 0.8rem;
}
.user-badge-name { font-weight: 600; color: var(--text-primary); }
.user-badge-role {
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
}
.role-titolare { background: rgba(139,92,246,0.2); color: var(--accent-purple); }
.role-dipendente { background: rgba(59,130,246,0.2); color: var(--accent-blue); }

.btn-icon {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    transition: all var(--transition);
    font-size: 1rem;
    line-height: 1;
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text-primary); }

/* ── Layout principale ───────────────────────────────────────────── */
.page-content {
    margin-top: var(--header-height);
    padding: 24px;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

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

.card-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

/* ── Bottoni ─────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}
.btn-primary { background: var(--accent-blue); color: #fff; }
.btn-primary:hover { background: #2563eb; color: #fff; }
.btn-success { background: var(--accent-green); color: #fff; }
.btn-success:hover { background: #16a34a; color: #fff; }
.btn-danger { background: var(--accent-red); color: #fff; }
.btn-danger:hover { background: #dc2626; color: #fff; }
.btn-ghost {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }
.btn-sm { padding: 5px 10px; font-size: 0.8rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.filtro-stato.active { background: var(--accent-blue); color: #fff; border-color: var(--accent-blue); }

/* ── Formulari ───────────────────────────────────────────────────── */
.form-group { margin-bottom: 14px; }
.form-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
    font-weight: 500;
}
.form-control {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 8px 10px;
    font-size: 0.875rem;
    transition: border-color var(--transition);
    font-family: inherit;
}
.form-control:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}
.form-control::placeholder { color: var(--text-muted); }
textarea.form-control { resize: vertical; min-height: 80px; }

.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; }

.form-check { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.form-check input[type=checkbox] {
    accent-color: var(--accent-blue);
    width: 16px; height: 16px;
    cursor: pointer;
}

/* ── Tabella ─────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}
thead th {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 10px 12px;
    text-align: left;
    white-space: nowrap;
    border-bottom: 1px solid var(--border-color);
}
tbody td {
    padding: 9px 12px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--bg-tertiary); }

/* ── Badge priorità/stato ────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.badge-alta    { background: rgba(239,68,68,0.2);   color: var(--accent-red); }
.badge-media   { background: rgba(234,179,8,0.2);   color: var(--accent-yellow); }
.badge-bassa   { background: rgba(100,116,139,0.2); color: var(--text-muted); }
.badge-da_fare   { background: rgba(100,116,139,0.2); color: var(--text-secondary); }
.badge-in_corso  { background: rgba(59,130,246,0.2);  color: var(--accent-blue); }
.badge-fatta     { background: rgba(34,197,94,0.2);   color: var(--accent-green); }

/* ── Modal ───────────────────────────────────────────────────────── */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}
.modal-overlay.open { display: flex; }

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 24px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}
.modal-title { font-size: 1rem; font-weight: 600; }
.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
    padding: 4px;
}
.modal-close:hover { color: var(--text-primary); }
.modal-footer {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

/* ── Toast notifiche ─────────────────────────────────────────────── */
#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px 16px;
    font-size: 0.85rem;
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    animation: slideIn 0.2s ease;
}
.toast.toast-ok  { border-left: 3px solid var(--accent-green); }
.toast.toast-err { border-left: 3px solid var(--accent-red); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to   { transform: translateX(0);   opacity: 1; }
}

/* ── Grid dashboard ──────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 900px) { .grid-2, .grid-4 { grid-template-columns: 1fr; } }

/* ── Selettore mese ──────────────────────────────────────────────── */
.mese-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

/* ── Task card ───────────────────────────────────────────────────── */
.task-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    margin-bottom: 8px;
    transition: border-color var(--transition);
}
.task-card:hover { border-color: var(--accent-blue); }
.task-card-title { font-weight: 600; margin-bottom: 4px; }
.task-card-meta {
    font-size: 0.78rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}
.task-card-actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* ── Colonne attività (admin board) ──────────────────────────────── */
.board {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 8px;
}
.board-col {
    min-width: 240px;
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 12px;
}
.board-col-header {
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ── Alert ───────────────────────────────────────────────────────── */
.alert {
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    margin-bottom: 12px;
}
.alert-err { background: rgba(239,68,68,0.15); color: var(--accent-red); border: 1px solid rgba(239,68,68,0.3); }
.alert-ok  { background: rgba(34,197,94,0.15); color: var(--accent-green); border: 1px solid rgba(34,197,94,0.3); }

/* ── Tab ─────────────────────────────────────────────────────────── */
.tab-bar { display: flex; gap: 4px; margin-bottom: 20px; border-bottom: 1px solid var(--border-color); }
.tab-btn {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 10px 16px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition);
    margin-bottom: -1px;
}
.tab-btn.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Utility ─────────────────────────────────────────────────────── */
.flex { display: flex; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.text-muted { color: var(--text-muted); font-size: 0.85rem; }
.text-right { text-align: right; }
.hidden { display: none !important; }
.w-full { width: 100%; }