/**
 * MC-EMS Base – Frontend Stylesheet
 *
 * Sections:
 *  1. CSS Variables
 *  2. Booking Form (#prenotazione-esame)
 *  3. Booking Calendar
 *  4. Manage Booking (shortcode_gestisci)
 *  5. Bookings List table
 *  6. Utility / shared
 *  7. Accessibility
 *  8. Print styles
 *  9. Media queries (responsive)
 */

/* =============================================================
   1. CSS Variables
   ============================================================= */
:root {
    --mcemexce-color-primary:      #2271b1;
    --mcemexce-color-success:      #4caf50;
    --mcemexce-color-warning:      #ff9800;
    --mcemexce-color-danger:       #f44336;
    --mcemexce-color-limited:      #ffeb3b;
    --mcemexce-color-past:         #c3c4c7;
    --mcemexce-color-text:         #1d2327;
    --mcemexce-color-muted:        #667085;
    --mcemexce-color-border:       #e5e7eb;
    --mcemexce-color-bg:           #f9f9f9;
    --mcemexce-color-card-bg:      #ffffff;
    --mcemexce-color-pill-bg:      #f2f4f7;
    --mcemexce-color-pill-text:    #344054;
    --mcemexce-radius-sm:          5px;
    --mcemexce-radius-md:          10px;
    --mcemexce-radius-lg:          14px;
    --mcemexce-radius-xl:          16px;
    --mcemexce-shadow-card:        0 1px 2px rgba(16, 24, 40, 0.06);
    --mcemexce-font-sm:            0.75rem;   /* 12px */
    --mcemexce-font-base:          0.9rem;    /* ~14px */
    --mcemexce-font-md:            1rem;
    --mcemexce-font-lg:            1.25rem;
    --mcemexce-font-xl:            1.5rem;
    --mcemexce-spacing-xs:         4px;
    --mcemexce-spacing-sm:         8px;
    --mcemexce-spacing-md:         14px;
    --mcemexce-spacing-lg:         20px;
    --mcemexce-spacing-xl:         24px;
}

/* =============================================================
   2. Booking Form (#prenotazione-esame)
   ============================================================= */
#prenotazione-esame {
    max-width: 640px;
    margin: 0 auto;
    padding: var(--mcemexce-spacing-lg);
    border: 1px solid var(--mcemexce-color-border);
    border-radius: var(--mcemexce-radius-md);
    background-color: var(--mcemexce-color-bg);
    box-sizing: border-box;
}

#prenotazione-esame h2 {
    text-align: center;
    font-size: var(--mcemexce-font-xl);
    margin-bottom: var(--mcemexce-spacing-sm);
}

#prenotazione-esame .mcemexce-login-required {
    text-align: center;
    color: var(--mcemexce-color-danger);
    font-weight: bold;
}

#prenotazione-esame .mcemexce-lead {
    text-align: center;
    margin: 0 0 var(--mcemexce-spacing-md);
    font-size: var(--mcemexce-font-base);
    color: var(--mcemexce-color-muted);
}

#prenotazione-esame label {
    font-weight: bold;
    display: block;
    margin-bottom: var(--mcemexce-spacing-sm);
}

#prenotazione-esame select,
#prenotazione-esame input[type="date"],
#prenotazione-esame input[type="text"],
#prenotazione-esame input[type="email"] {
    width: 100%;
    padding: 10px;
    border-radius: var(--mcemexce-radius-sm);
    border: 1px solid #ccc;
    margin-bottom: var(--mcemexce-spacing-lg);
    font-size: var(--mcemexce-font-base);
    box-sizing: border-box;
}

#prenotazione-esame select:focus,
#prenotazione-esame input:focus {
    outline: 2px solid var(--mcemexce-color-primary);
    outline-offset: 1px;
    border-color: var(--mcemexce-color-primary);
}

/* Confirm booking button */
#confirm-button {
    background-color: var(--mcemexce-color-success);
    color: #fff;
    padding: 12px 24px;
    border: none;
    border-radius: var(--mcemexce-radius-sm);
    cursor: pointer;
    font-size: var(--mcemexce-font-md);
    font-weight: bold;
    transition: background-color 0.2s ease;
}

#confirm-button:hover {
    background-color: #43a047;
}

#confirm-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

#confirm-container {
    text-align: center;
    margin-top: var(--mcemexce-spacing-lg);
}

/* Slot container */
#slot-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

/* Individual exam slot buttons */
.mcemexce-slot {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 90px;
    padding: var(--mcemexce-spacing-sm) var(--mcemexce-spacing-md);
    border: 2px solid var(--mcemexce-color-border);
    border-radius: var(--mcemexce-radius-md);
    cursor: pointer;
    font-weight: 700;
    font-size: var(--mcemexce-font-sm);
    background: var(--mcemexce-color-card-bg);
    transition: border-color 0.15s, background 0.15s;
}

.mcemexce-slot:hover {
    border-color: var(--mcemexce-color-primary);
    background: #e8f0fe;
}

.mcemexce-slot.selected {
    border-color: var(--mcemexce-color-primary);
    background: var(--mcemexce-color-primary);
    color: #fff;
}

.mcemexce-slot.full {
    opacity: 0.45;
    cursor: not-allowed;
    border-color: var(--mcemexce-color-danger);
    color: var(--mcemexce-color-danger);
}

/* =============================================================
   3. Booking Calendar
   ============================================================= */
#mcemexce-booking-calendar-wrap {
    margin-bottom: var(--mcemexce-spacing-lg);
}

/* Calendar header nav */
.mcemexce-cal-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

#mcemexce-prev-month,
#mcemexce-next-month {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    padding: 5px 7px;
    border-radius: 50%;
    transition: background 0.15s;
}

#mcemexce-prev-month:hover,
#mcemexce-next-month:hover {
    background: #e8f0fe;
}

#mcemexce-month-year {
    font-weight: 700;
    font-size: 17px;
    text-transform: capitalize;
}

/* Calendar grid */
#mcemexce-booking-calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    max-width: 360px;
    margin: 0 auto;
    gap: var(--mcemexce-spacing-xs);
}

/* Day cells */
.mcemexce-cal-day-cell {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    aspect-ratio: 1;
    border-radius: 50%;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform 0.1s, box-shadow 0.1s;
    box-sizing: border-box;
}

.mcemexce-cal-day-cell:hover {
    transform: scale(1.1);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

/* Color coding for availability */
.mcemexce-cal-available {
    background: var(--mcemexce-color-success);
    color: #fff;
}

.mcemexce-cal-limited {
    background: var(--mcemexce-color-limited);
    color: #555;
    border-color: #d4c600;
}

.mcemexce-cal-low {
    background: var(--mcemexce-color-warning);
    color: #fff;
}

.mcemexce-cal-full {
    background: var(--mcemexce-color-danger);
    color: #fff;
    cursor: not-allowed;
}

.mcemexce-cal-full:hover {
    transform: none;
    box-shadow: none;
}

.mcemexce-cal-past {
    background: var(--mcemexce-color-past);
    color: #888;
    cursor: default;
}

.mcemexce-cal-past:hover {
    transform: none;
    box-shadow: none;
}

.mcemexce-cal-selected {
    border-color: var(--mcemexce-color-primary) !important;
    box-shadow: 0 0 0 3px rgba(34, 113, 177, 0.35);
}

/* Calendar weekday header row */
.mcemexce-cal-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    max-width: 360px;
    margin: 0 auto var(--mcemexce-spacing-xs);
    gap: var(--mcemexce-spacing-xs);
}

.mcemexce-cal-weekday {
    text-align: center;
    font-weight: 700;
    font-size: 12px;
    padding: 3px 0;
    color: var(--mcemexce-color-muted);
}

/* Legend */
.mcemexce-cal-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin: 12px auto 0;
    font-size: 12px;
    color: #555;
    max-width: 420px;
}

.mcemexce-cal-legend-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.mcemexce-cal-legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

/* =============================================================
   4. Manage Booking (shortcode_gestisci) – .mcemexce-* classes
   ============================================================= */
.mcemexce-wrap {
    max-width: 980px;
    margin: 0 auto;
}

.mcemexce-h3 {
    margin: 0 0 10px;
    font-size: var(--mcemexce-font-lg);
}

.mcemexce-sub {
    margin: 0 0 18px;
    color: var(--mcemexce-color-muted);
    font-size: var(--mcemexce-font-base);
}

.mcemexce-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--mcemexce-spacing-md);
}

.mcemexce-card {
    background: var(--mcemexce-color-card-bg);
    border: 1px solid var(--mcemexce-color-border);
    border-radius: var(--mcemexce-radius-lg);
    padding: var(--mcemexce-spacing-md) var(--mcemexce-spacing-md) 12px;
    box-shadow: var(--mcemexce-shadow-card);
}

.mcemexce-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
}

.mcemexce-exam {
    font-weight: 800;
    font-size: var(--mcemexce-font-md);
    line-height: 1.3;
}

.mcemexce-meta {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: var(--mcemexce-spacing-sm);
}

.mcemexce-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--mcemexce-spacing-sm);
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--mcemexce-color-pill-bg);
    color: var(--mcemexce-color-pill-text);
    font-size: var(--mcemexce-font-sm);
    font-weight: 700;
}

.mcemexce-pill strong {
    font-weight: 900;
}

.mcemexce-actions {
    margin-top: 12px;
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.mcemexce-btn {
    appearance: none;
    border: 1px solid #d0d5dd;
    background: var(--mcemexce-color-card-bg);
    border-radius: var(--mcemexce-radius-md);
    padding: var(--mcemexce-spacing-sm) 12px;
    font-weight: 800;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-size: var(--mcemexce-font-base);
    transition: background 0.15s;
    color: var(--mcemexce-color-text);
}

.mcemexce-btn:hover {
    background: #f9fafb;
}

.mcemexce-btn:focus {
    outline: 2px solid var(--mcemexce-color-primary);
    outline-offset: 2px;
}

.mcemexce-muted {
    color: var(--mcemexce-color-muted);
    font-size: var(--mcemexce-font-sm);
    font-weight: 700;
}

.mcemexce-note {
    margin-top: var(--mcemexce-spacing-md);
    color: var(--mcemexce-color-muted);
    font-size: var(--mcemexce-font-sm);
}

/* =============================================================
   5. Bookings List table (.mcemexce-bookings-*)
   ============================================================= */
.mcemexce-bookings-wrap {
    max-width: 1100px;
    margin: 0 auto;
    overflow-x: auto;
}

.mcemexce-bookings-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--mcemexce-spacing-sm);
    align-items: flex-end;
    margin-bottom: var(--mcemexce-spacing-md);
}

.mcemexce-bookings-filter-bar label {
    font-weight: 600;
    font-size: var(--mcemexce-font-sm);
    color: var(--mcemexce-color-muted);
    display: block;
    margin-bottom: 3px;
}

.mcemexce-bookings-filter-bar input,
.mcemexce-bookings-filter-bar select {
    padding: 6px 10px;
    border: 1px solid #ccc;
    border-radius: var(--mcemexce-radius-sm);
    font-size: var(--mcemexce-font-base);
}

.mcemexce-bookings-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--mcemexce-font-base);
}

.mcemexce-bookings-table th {
    text-align: left;
    padding: var(--mcemexce-spacing-sm) 12px;
    background: #f0f0f1;
    border-bottom: 2px solid var(--mcemexce-color-border);
    font-size: var(--mcemexce-font-sm);
    font-weight: 700;
    color: #3c434a;
    white-space: nowrap;
}

.mcemexce-bookings-table td {
    padding: var(--mcemexce-spacing-sm) 12px;
    border-bottom: 1px solid var(--mcemexce-color-border);
    vertical-align: middle;
}

.mcemexce-bookings-table tr:nth-child(even) td {
    background: #f9fafb;
}

.mcemexce-bookings-table tr:hover td {
    background: #eef2f7;
}

/* =============================================================
   6. Utility / shared
   ============================================================= */

/* Loading spinner */
.mcemexce-spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 3px solid rgba(34, 113, 177, 0.25);
    border-top-color: var(--mcemexce-color-primary);
    border-radius: 50%;
    animation: mcemexce-spin 0.7s linear infinite;
    vertical-align: middle;
    margin-right: 6px;
}

@keyframes mcemexce-spin {
    to { transform: rotate(360deg); }
}

/* Status / feedback messages */
.mcemexce-msg {
    padding: 10px 14px;
    border-radius: var(--mcemexce-radius-sm);
    font-size: var(--mcemexce-font-base);
    margin: 10px 0;
}

.mcemexce-msg-success {
    background: #ecfdf3;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.mcemexce-msg-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.mcemexce-msg-info {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* =============================================================
   7. Accessibility
   ============================================================= */
*:focus-visible {
    outline: 2px solid var(--mcemexce-color-primary);
    outline-offset: 2px;
}

/* Skip link (if added) */
.mcemexce-skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--mcemexce-color-primary);
    color: #fff;
    padding: 6px 14px;
    z-index: 9999;
    transition: top 0.15s;
    border-radius: 0 0 var(--mcemexce-radius-sm) 0;
}

.mcemexce-skip-link:focus {
    top: 0;
}

/* =============================================================
   8. Print styles
   ============================================================= */
@media print {
    #prenotazione-esame,
    .mcemexce-actions,
    .mcemexce-bookings-filter-bar,
    #confirm-container {
        display: none !important;
    }

    .mcemexce-bookings-table,
    .mcemexce-card {
        page-break-inside: avoid;
    }

    .mcemexce-bookings-table {
        font-size: 10pt;
    }
}

/* =============================================================
   9. Media queries (responsive / mobile-first)
   ============================================================= */
@media (max-width: 640px) {
    #prenotazione-esame {
        padding: var(--mcemexce-spacing-md);
    }

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

    #mcemexce-booking-calendar {
        max-width: 100%;
    }

    .mcemexce-cal-weekdays {
        max-width: 100%;
    }

    .mcemexce-bookings-wrap {
        overflow-x: auto;
    }

    .mcemexce-bookings-filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .mcemexce-cal-legend {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .mcemexce-btn {
        width: 100%;
        text-align: center;
    }

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

    .mcemexce-pill {
        font-size: 11px;
    }
}

/* =============================================================
   10. Session Assignment Calendar (mcemexce_sessions_calendar shortcode)
   ============================================================= */
.calendar-wrapper {
    text-align: center;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

.calendar-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.calendar-nav button {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: background .2s;
}

.calendar-nav button:hover {
    background: #e0e0e0;
}

#monthYear {
    font-weight: 700;
    font-size: 18px;
    text-transform: capitalize;
}

.calendar-header,
#calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    max-width: 520px;
    margin: 0 auto;
    gap: 4px;
}

.calendar-header div {
    text-align: center;
    font-weight: 700;
    font-size: 13px;
    padding: 4px 0;
}

.calendar-day {
    border: 1px solid #ddd;
    padding: 8px;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 10px;
    margin: 0 auto;
    font-size: 13px;
    transition: transform .12s, box-shadow .12s;
}

.calendar-day:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, .06);
}

.no-slot {
    background-color: #eee;
    color: #777;
    cursor: not-allowed;
}

.slot-verde {
    background-color: #4caf50;
    color: #fff;
}

.slot-giallo {
    background-color: #ffeb3b;
    color: #000;
}

.slot-arancione {
    background-color: #ff9800;
    color: #fff;
}

.slot-rosso {
    background-color: #f44336;
    color: #fff;
}

.my-sessions-wrap {
    margin: 18px auto 0;
    max-width: 520px;
    text-align: center;
}

.btns-stack {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: stretch;
}

.btn-outline {
    appearance: none;
    background: #fff;
    color: #111827;
    border: 1px solid #d1d5db;
    border-radius: 12px;
    padding: 10px 14px;
    font-weight: 700;
    cursor: pointer;
    transition: background .2s, transform .06s, border-color .2s;
}

.btn-outline:hover {
    background: #f9fafb;
    transform: translateY(-1px);
    border-color: #9ca3af;
}

.btn-outline.small {
    padding: 8px 12px;
    font-weight: 600;
}

.btn-outline.small.tight {
    padding: 4px 8px;
    font-size: 13px;
    line-height: 1.1;
    width: auto;
    min-width: unset;
    white-space: nowrap;
}

.filters-row {
    display: flex;
    gap: 10px;
    align-items: flex-end;
    margin: 8px 0 12px;
    flex-wrap: wrap;
}

.filters-row label {
    display: flex;
    flex-direction: column;
    font-size: 14px;
    gap: 4px;
    color: #374151;
}

.filters-row select {
    padding: 6px 8px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
}

.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    inset: 0;
    background: rgba(0, 0, 0, .45);
}

.modal-content {
    background: #fff;
    margin: 6% auto;
    padding: 20px;
    border-radius: 12px;
    width: 92%;
    max-width: 720px;
    box-shadow: 0 16px 50px rgba(0, 0, 0, .25);
    max-height: 82vh;
    overflow: auto;
}

.close {
    float: right;
    font-size: 24px;
    cursor: pointer;
}

#modalSlotInfo .slot-row,
#mySessionsBody .slot-row,
#allAssignmentsBody .slot-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid #eee;
    border-radius: 10px;
    padding: 10px 12px;
    margin: 10px 0;
    background: #fafafa;
    gap: 12px;
}

.slot-meta {
    font-size: 14px;
}

.slot-meta strong {
    font-size: 16px;
}

.actions {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    min-width: 180px;
}

.slot-actions .btn-assegna,
.actions .btn-modifica,
.actions .btn-elimina {
    width: 100%;
}

.btn-assegna,
.btn-modifica,
.btn-elimina {
    appearance: none;
    border: 1px solid;
    border-radius: 8px;
    padding: 8px 12px;
    font-weight: 700;
    cursor: pointer;
    transition: background .2s, transform .06s, opacity .2s, border-color .2s;
}

.btn-assegna {
    background: #2563eb;
    border-color: #2563eb;
    color: #fff;
}

.btn-assegna:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
}

.btn-modifica {
    background: #10b981;
    border-color: #0ea5a4;
    color: #fff;
}

.btn-modifica:hover {
    background: #059669;
    transform: translateY(-1px);
}

.btn-elimina {
    background: #ef4444;
    border-color: #dc2626;
    color: #fff;
}

.btn-elimina:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

.btn-assegna:disabled,
.btn-modifica:disabled,
.btn-elimina:disabled {
    opacity: .6;
    cursor: not-allowed;
    transform: none;
}

.badge-soft {
    display: inline-block;
    background: #eff6ff;
    color: #1d4ed8;
    border-radius: 999px;
    padding: 4px 10px;
    font-weight: 700;
    font-size: 12px;
}

.muted {
    color: #6b7280;
}

.notice {
    margin: 8px 0;
    font-size: 13px;
    color: #374151;
}

.scrollable {
    max-height: 64vh;
    overflow: auto;
}

.slot-id {
    margin-left: 8px;
    font-size: 12px;
    font-weight: 700;
    color: #6b7280;
}

.nf-es-badge {
    display: inline-block;
    border: 1px solid #2563eb;
    color: #2563eb;
    background: #dbeafe;
    padding: 4px 10px;
    border-radius: 999px;
    font-weight: 900;
    font-size: 12px;
    line-height: 1;
    margin-left: 10px;
    vertical-align: middle;
    white-space: nowrap;
}

/* =============================================================
   11. Tutor LMS Exam Gate (locked exam overlay)
   ============================================================= */
.tutor-card.tutor-card-md.tutor-sidebar-card { display: none !important; }
.tutor-course-details-tab.tutor-mt-32 { display: none !important; }
.tutor-course-single-curriculum { display: none !important; }
.tutor-course-lesson { display: none !important; }
.tutor-course-quiz { display: none !important; }

.mcemexce-locked-exam {
    max-width: 820px;
    margin: 28px auto;
    padding: 18px;
    border-radius: 16px;
    border: 1px solid #fda29b;
    background: #fffbfa;
    box-shadow: 0 10px 30px rgba(16, 24, 40, .08);
}

.mcemexce-locked-exam__title {
    font-weight: 900;
    color: #b42318;
    font-size: 18px;
    margin-bottom: 8px;
}

.mcemexce-locked-exam__body {
    color: #7a271a;
    font-weight: 800;
    font-size: 14px;
    line-height: 1.5;
}