/* ========================================
   COMPONENT: CALENDAR
   ======================================== */

/* ========================================
   WIDGET WRAPPER
   ======================================== */

.modern-calendar-widget {
    overflow: hidden;
}


/* ========================================
   CALENDAR HEADER — BEM STRUCTURE
   ======================================== */

.calendar-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-gray-200) 100%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

/* Single-row controls: [nav] ... [title centered] ... [view-toggle] */
.calendar-header__controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.calendar-header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
    z-index: 1;
}

.calendar-header__title-section {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    pointer-events: none;
}

.calendar-header__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-800);
    margin: 0;
    line-height: 1.2;
}


/* View Toggle */
.calendar-header__view-toggle {
    display: flex;
    gap: var(--space-1);
    background: var(--color-white);
    padding: var(--space-1);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.calendar-view-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border: none;
    background: transparent;
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast) var(--ease-out),
                color var(--transition-fast) var(--ease-out);
    white-space: nowrap;
}

.calendar-view-btn i {
    font-size: var(--font-size-base);
}

.calendar-view-btn:hover {
    background: rgba(var(--color-primary-rgb), 0.1);
    color: var(--color-primary);
}

.calendar-view-btn--active {
    background: var(--color-primary);
    color: var(--color-white);
}

.calendar-view-btn--active:hover {
    background: var(--color-primary-dark);
    color: var(--color-white);
}

.calendar-view-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
    z-index: 1;
}

/* Navigation Buttons (prev / next) */
.calendar-nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    padding: 0;
    border: 1px solid var(--color-gray-300);
    background: var(--color-white);
    color: var(--color-gray-600);
    font-size: var(--font-size-base);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color var(--transition-fast) var(--ease-out),
                background-color var(--transition-fast) var(--ease-out),
                color var(--transition-fast) var(--ease-out);
}

.calendar-nav-btn:hover {
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.05);
    color: var(--color-primary);
}

.calendar-nav-btn:active {
    background: rgba(var(--color-primary-rgb), 0.12);
}

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

/* Today Button — distinct from arrow buttons */
.calendar-nav-btn--today {
    width: auto;
    padding: 0 var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
    border-color: var(--color-gray-400);
}

.calendar-nav-btn--today:hover {
    background: var(--color-gray-100);
    border-color: var(--color-gray-500);
    color: var(--color-gray-800);
}

/* ========================================
   CALENDAR BODY
   ======================================== */

.calendar-body {
    position: relative;
    padding: var(--space-6);
    min-height: 400px;
}

.modern-calendar-container {
    position: relative;
    z-index: 1;
    animation: fadeIn 0.4s ease-out;
}

/* Loading State */
.calendar-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    z-index: 10;
    backdrop-filter: blur(4px);
}

.calendar-loading .spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3rem;
}

/* ========================================
   FULLCALENDAR CUSTOMIZATION
   ======================================== */

.modern-calendar-container .fc {
    font-family: inherit;
}

.modern-calendar-container .fc-theme-standard td,
.modern-calendar-container .fc-theme-standard th {
    border-color: rgba(0, 0, 0, 0.08);
}

/* Column Headers (MON, TUE...) */
.modern-calendar-container .fc-col-header-cell {
    padding: var(--space-3);
    background: rgba(var(--color-primary-rgb), 0.04);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-xs);
    color: var(--color-gray-700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Day Cells */
.modern-calendar-container .fc-daygrid-day {
    background: var(--color-white);
    transition: background-color var(--transition-fast) var(--ease-out);
    cursor: pointer;
}

.modern-calendar-container .fc-daygrid-day:hover {
    background: rgba(var(--color-primary-rgb), 0.05);
    box-shadow: inset 0 0 0 2px rgba(var(--color-primary-rgb), 0.2);
}

.modern-calendar-container .fc-daygrid-day-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2);
}

/* Day Numbers */
.modern-calendar-container .day-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
    transition: all var(--transition-base) var(--ease-in-out);
}

/* Today */
.modern-calendar-container .fc-daygrid-day.is-today {
    background: rgba(var(--color-primary-rgb), 0.06);
}

.modern-calendar-container .fc-daygrid-day.is-today .day-number {
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: var(--font-weight-bold);
}

/* Selected */
.modern-calendar-container .fc-daygrid-day.is-selected {
    background: rgba(var(--color-primary-rgb), 0.08);
}

.modern-calendar-container .fc-daygrid-day.is-selected .day-number {
    background: var(--color-primary);
    color: var(--color-white);
}

/* Other Month Days */
.modern-calendar-container .fc-day-other .day-number {
    color: var(--color-gray-600);
}

.modern-calendar-container .fc-day-other {
    background: rgba(0, 0, 0, 0.02);
}

/* Days with / without events */
.modern-calendar-container .fc-daygrid-day.has-event {
    position: relative;
}

.modern-calendar-container .fc-daygrid-day.no-events {
    opacity: 0.8;
}

/* Event Chips */
.modern-calendar-container .fc-event {
    cursor: pointer;
}

.modern-calendar-container .fc-daygrid-event {
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    padding: 1px 5px;
    margin: 1px 2px 0;
    cursor: pointer;
}

.modern-calendar-container .fc-daygrid-event .fc-event-time {
    display: none;
}

.modern-calendar-container .fc-daygrid-event .fc-event-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: var(--font-weight-medium);
}

/* Hide scrollbars on all calendar sections — time slots still scroll via wheel/touch */
.modern-calendar-container .fc-scroller {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.modern-calendar-container .fc-scroller::-webkit-scrollbar {
    width: 0;
    height: 0;
}

/* Time Grid (week / day view) events */
.modern-calendar-container .fc-timegrid-event {
    border-radius: var(--radius-sm);
    border: none;
}

.modern-calendar-container .fc-timegrid-event .fc-event-main {
    padding: 2px 5px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.modern-calendar-container .fc-timegrid-event .fc-event-time {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    opacity: 0.85;
    flex-shrink: 0;
}

.modern-calendar-container .fc-timegrid-event .fc-event-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-shrink: 0;
}

.modern-calendar-container .fc-daygrid-more-link {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    padding: 0 4px;
    margin-top: 1px;
}

.modern-calendar-container .fc-daygrid-more-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* Event Count Badge */
.event-count-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 var(--space-1);
    background: var(--color-success);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 6px rgba(var(--color-success-rgb), 0.3);
    animation: badgePulse 0.3s var(--ease-out-expo);
}

/* ========================================
   LIST VIEW (Day View)
   ======================================== */

.modern-calendar-container .fc-list {
    border: none;
}

.modern-calendar-container .fc-list-day-cushion {
    background: rgba(var(--color-primary-rgb), 0.06);
    padding: var(--space-3) var(--space-4);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-gray-700);
    border-bottom: 2px solid var(--color-primary);
}

.modern-calendar-container .fc-list-event {
    transition: background-color var(--transition-fast) var(--ease-out);
    cursor: pointer;
}

.modern-calendar-container .fc-list-event:hover {
    background: rgba(var(--color-primary-rgb), 0.05);
}

.modern-calendar-container .fc-list-event-dot {
    border-width: 6px;
    border-radius: var(--radius-full);
}

.modern-calendar-container .fc-list-event-title {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-800);
}

.modern-calendar-container .fc-list-event-time {
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

.modern-calendar-container .fc-list-empty {
    padding: var(--space-8);
    text-align: center;
    background: rgba(0, 0, 0, 0.02);
}

.modern-calendar-container .fc-list-empty-cushion {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

/* ========================================
   CALENDAR LEGEND
   ======================================== */

.calendar-legend {
    display: flex;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.calendar-legend__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
}

.calendar-legend__dot {
    width: 12px;
    height: 12px;
    border-radius: 3px;
    flex-shrink: 0;
}

.calendar-legend__dot--appointments { background: var(--event-appointment); }
.calendar-legend__dot--goals        { background: var(--event-goal); }
.calendar-legend__dot--events       { background: var(--color-primary); }

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 991.98px) {
    .calendar-header {
        padding: var(--space-4) var(--space-5);
    }

    .calendar-header__controls {
        flex-wrap: wrap;
        gap: var(--space-3);
    }


    .calendar-body {
        padding: var(--space-5);
        min-height: 350px;
    }

    .modern-calendar-container .day-number {
        width: 28px;
        height: 28px;
        font-size: var(--font-size-xs);
    }

    .event-count-badge {
        min-width: 18px;
        height: 18px;
        font-size: 0.625rem;
    }
}

@media (max-width: 767.98px) {
    .calendar-header__nav {
        flex: 1;
    }

    .calendar-view-btn .btn-text {
        display: none;
    }

    .calendar-view-btn {
        padding: var(--space-2);
    }

    .calendar-nav-btn {
        width: 32px;
        height: 32px;
        font-size: var(--font-size-sm);
    }

    .calendar-nav-btn--today {
        flex: 1;
        justify-content: center;
        padding: 0 var(--space-2);
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 575.98px) {
    .calendar-header {
        padding: var(--space-4);
    }

    .calendar-body {
        padding: var(--space-4);
        min-height: 300px;
    }

    .modern-calendar-container .fc-col-header-cell {
        padding: var(--space-2);
    }
}

@media print {
    .modern-calendar-widget {
        box-shadow: none !important;
        page-break-inside: avoid;
    }

    .calendar-header__nav-controls,
    .calendar-header__view-toggle {
        display: none !important;
    }
}