/**
 * ============================================================================
 *    CALENDAR COMPONENT
 * ============================================================================
 * Componente de calendario mensual con tokens CSS centralizados.
 * Diseñado para 1920x1080 - toda información visible sin scroll.
 * 
 * Tokens requeridos: design-tokens.css
 * ============================================================================
 */

/* -----------------------------------------------------------------------------
   Viewport & Layout principal
   ----------------------------------------------------------------------------- */
.calendar-viewport {
    height: var(--calendar-viewport-height);
    min-height: var(--calendar-viewport-min-height);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.calendar-layout-page {
    height: var(--calendar-viewport-height);
    margin-bottom: 0;
}

.calendar-layout-page__header {
    display: flex;
    flex-direction: column;
    gap: var(--calendar-layout-gap);
}

.calendar-layout-page__body {
    overflow: hidden;
}

.calendar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--calendar-content-padding);
}

/* -----------------------------------------------------------------------------
   Calendar Grid
   ----------------------------------------------------------------------------- */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: var(--calendar-grid-rows);
    gap: var(--calendar-grid-gap);
    background: var(--color-gray-200);
    border: var(--border-width) solid var(--color-gray-200);
    border-radius: var(--calendar-grid-radius);
    height: 100%;
}

/* -----------------------------------------------------------------------------
   Day Headers (Lun, Mar, Mié...)
   ----------------------------------------------------------------------------- */
.calendar-day-header {
    background: var(--calendar-header-bg);
    padding: var(--calendar-header-padding-y) var(--calendar-header-padding-x);
    text-align: center;
    font-weight: var(--calendar-header-weight);
    font-size: var(--calendar-header-font-size);
    color: var(--calendar-header-color);
}

.calendar-day-header.weekend {
    background: var(--calendar-header-weekend-bg);
    color: var(--calendar-header-weekend-color);
}

/* -----------------------------------------------------------------------------
   Day Cells
   ----------------------------------------------------------------------------- */
.calendar-day {
    background: var(--calendar-day-bg);
    min-height: var(--calendar-day-min-height);
    padding: var(--calendar-day-padding);
    position: relative;
    transition: var(--transition-base);
    overflow-x: hidden;
    overflow-y: auto;
}

/* Celda clicable para crear festivo */
.calendar-day:not(.empty) {
    cursor: pointer;
}

.calendar-day.empty {
    background: var(--calendar-day-empty-bg);
}

.calendar-day.weekend {
    background: var(--calendar-day-weekend-bg);
}

.calendar-day.today {
    background: var(--calendar-day-today-bg);
}

.calendar-day.festivo {
    background: var(--calendar-day-festivo-bg);
}

.calendar-day.festivo .day-number {
    color: var(--danger-text);
}

/* Drag over state */
.calendar-day.drag-over {
    background: var(--info-bg);
    box-shadow: inset 0 0 0 2px var(--info-text);
}

/* -----------------------------------------------------------------------------
   Day Number
   ----------------------------------------------------------------------------- */
.day-number {
    font-weight: var(--calendar-daynum-font-weight);
    margin-bottom: var(--calendar-daynum-margin);
    font-size: var(--calendar-daynum-font-size);
    color: var(--calendar-daynum-color);
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.day-number .today-indicator {
    width: var(--calendar-daynum-today-size);
    height: var(--calendar-daynum-today-size);
    background: var(--primary-500);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
}

/* -----------------------------------------------------------------------------
   Festivo Label
   ----------------------------------------------------------------------------- */
.festivo-label {
    font-size: var(--calendar-festivo-font-size);
    color: var(--calendar-festivo-color);
    background: var(--calendar-festivo-bg);
    padding: var(--calendar-festivo-padding-y) var(--calendar-festivo-padding-x);
    border-radius: var(--calendar-festivo-radius);
    display: inline-block;
    margin-bottom: var(--space-1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    cursor: pointer;
    transition: var(--transition-base);
}

.festivo-label:hover {
    filter: brightness(0.95);
}

.calendar-day .day-number {
    cursor: pointer;
}

/* -----------------------------------------------------------------------------
   Session Items
   ----------------------------------------------------------------------------- */
.session-item {
    background: var(--calendar-session-bg);
    border-left: var(--calendar-session-border-left) solid var(--calendar-session-border);
    padding: var(--calendar-session-padding-y) var(--calendar-session-padding-x);
    margin-bottom: var(--calendar-session-margin-bottom);
    font-size: var(--calendar-session-font-size);
    border-radius: var(--calendar-session-radius);
    cursor: pointer;
    transition: var(--transition-base);
}

.session-item:hover {
    filter: brightness(0.95);
    transform: translateX(2px);
}

.session-item.realizada {
    background: var(--calendar-session-realizada-bg);
    border-left-color: var(--calendar-session-realizada-border);
}

.session-item.cancelada {
    background: var(--calendar-session-cancelada-bg);
    border-left-color: var(--calendar-session-cancelada-border);
    opacity: var(--calendar-session-cancelada-opacity);
}

.session-item.evento {
    background: var(--calendar-session-evento-bg);
    border-left-color: var(--calendar-session-evento-border);
}

.session-item.extraordinary {
    background: var(--calendar-session-extra-bg);
    border-left-color: var(--calendar-session-extra-border);
}

.session-item.on-festivo {
    border-left-color: var(--warning-500);
    box-shadow: inset 0 0 0 1px rgba(245, 158, 11, 0.25);
}

/* Session time & group */
.session-time {
    font-weight: var(--calendar-sess-time-weight);
    color: var(--calendar-sess-time-color);
    display: flex;
    align-items: center;
    gap: var(--calendar-sess-time-gap);
    font-size: var(--calendar-sess-time-size);
}

.session-group {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--calendar-sess-group-color);
    font-size: var(--calendar-sess-group-size);
}

/* -----------------------------------------------------------------------------
   Calendar Navigation
   ----------------------------------------------------------------------------- */
.calendar-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--calendar-nav-padding);
    background: var(--calendar-nav-bg);
    border: var(--border-width) solid var(--calendar-nav-border);
    border-radius: var(--calendar-nav-radius);
    margin-bottom: var(--space-2);
}

.calendar-month-title {
    font-size: var(--calendar-title-size);
    font-weight: var(--calendar-title-weight);
    color: var(--calendar-title-color);
}

/* -----------------------------------------------------------------------------
   Legend
   ----------------------------------------------------------------------------- */
.calendar-legend {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--calendar-legend-gap);
    padding: var(--calendar-legend-padding-y) 0;
    font-size: var(--calendar-legend-font-size);
    color: var(--calendar-legend-color);
    border-bottom: var(--border-width) solid var(--calendar-legend-border);
    margin-bottom: var(--space-3);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.legend-dot {
    width: var(--calendar-dot-size);
    height: var(--calendar-dot-size);
    border-radius: 50%;
}

.legend-dot.regular {
    background: var(--info-text);
}

.legend-dot.extraordinary {
    background: var(--warning-text);
}

.legend-dot.realizada {
    background: var(--success-text);
}

.legend-dot.cancelada {
    background: var(--danger-text);
}

.legend-dot.today {
    background: var(--warning-400);
    border: var(--border-width) solid var(--warning-500);
}

.calendar-counter {
    margin-left: auto;
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
}

.calendar-toolbar-actions {
    display: flex;
    gap: var(--calendar-toolbar-gap);
    flex-wrap: wrap;
}

/* -----------------------------------------------------------------------------
   Back to group bar
   ----------------------------------------------------------------------------- */
.calendar-back-to-group {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--calendar-bar-padding);
    background: var(--calendar-bar-bg);
    border-radius: var(--calendar-bar-radius);
    margin: var(--calendar-bar-margin);
}

.calendar-back-to-group__return {
    background: var(--color-gray-50);
    color: var(--primary-700);
    font-weight: var(--font-weight-semibold);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    transition: var(--transition-base);
}

.calendar-back-to-group__return:hover {
    transform: translateX(-2px);
}

.calendar-back-to-group__meta {
    color: var(--color-gray-100);
    font-size: var(--text-sm);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.calendar-back-to-group__all {
    color: var(--color-gray-100);
    border-color: var(--primary-300);
}

.calendar-back-to-group__all:hover {
    background: var(--primary-500);
    color: var(--color-gray-100);
}

/* -----------------------------------------------------------------------------
   Active filter chip
   ----------------------------------------------------------------------------- */
.calendar-active-filter-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--calendar-filter-chip-gap);
    padding: var(--calendar-filter-chip-padding);
    margin-bottom: var(--space-2);
    font-size: var(--calendar-filter-chip-font-size);
    background: var(--info-bg);
    border: var(--border-width) solid var(--info-border);
    border-radius: var(--radius-full);
    color: var(--info-text);
}

.calendar-active-filter-chip .chip-remove,
.calendar-active-filter-chip .chip-link {
    display: inline-flex;
    align-items: center;
    color: inherit;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
    text-decoration: none;
}

.calendar-active-filter-chip .chip-remove:hover,
.calendar-active-filter-chip .chip-link:hover {
    opacity: 1;
}

/* -----------------------------------------------------------------------------
   Filters bar
   ----------------------------------------------------------------------------- */
.calendar-filters-bar {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: 0;
    flex-wrap: wrap;
}

.calendar-filters-toggle-compact {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    background: var(--calendar-filter-btn-bg);
    border: var(--border-width) solid var(--calendar-filter-btn-border);
    color: var(--calendar-filter-btn-color);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: var(--transition-base);
    white-space: nowrap;
}

.calendar-filters-toggle-compact:hover {
    background: var(--color-gray-200);
    border-color: var(--color-gray-400);
}

.calendar-filters-toggle-compact .toggle-icon {
    transition: transform var(--transition-fast);
    font-size: var(--text-xs);
}

.calendar-filters-toggle-compact .toggle-icon.rotated {
    transform: rotate(180deg);
}

/* Inline filters */
.calendar-filters-inline {
    display: none;
    align-items: center;
    gap: var(--space-1);
    flex-wrap: wrap;
    flex: 1;
}

.filter-select-compact {
    padding: var(--space-1) var(--space-2);
    border: var(--border-width) solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    background: white;
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    min-width: var(--calendar-filter-select-min-width);
    max-width: var(--calendar-filter-select-max-width);
    cursor: pointer;
}

.filter-select-compact:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(130, 3, 3, 0.1);
}

/* -----------------------------------------------------------------------------
   Nav + Legend merged bar
   ----------------------------------------------------------------------------- */
.calendar-nav-legend-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0;
    gap: var(--space-1);
    flex-wrap: wrap;
}

.calendar-nav-compact {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.calendar-month-title-compact {
    font-weight: var(--calendar-compact-title-weight);
    font-size: var(--calendar-compact-title-size);
    color: var(--color-gray-800);
    min-width: 120px;
    text-align: center;
}

.calendar-legend-compact {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    color: var(--color-gray-600);
    flex-wrap: wrap;
}

.legend-dot-inline {
    width: var(--calendar-dot-size);
    height: var(--calendar-dot-size);
    border-radius: 50%;
    display: inline-block;
    margin-left: var(--space-1);
}

.legend-dot-inline.regular { background: var(--primary-500); }
.legend-dot-inline.extraordinary { background: var(--warning-500); }
.legend-dot-inline.realizada { background: var(--success-500); }
.legend-dot-inline.cancelada { background: var(--danger-500); }
.legend-dot-inline.today { background: var(--gray-800); }

.calendar-counter-compact {
    margin-left: var(--space-2);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
}

/* -----------------------------------------------------------------------------
   Compact filter bar (v1.4)
   ----------------------------------------------------------------------------- */
.calendar-filter-select {
    padding: var(--space-1) var(--space-2);
    border: var(--border-width) solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    background: white;
    font-size: var(--text-sm);
    min-width: 100px;
    max-width: none;
}

.calendar-filter-select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(130, 3, 3, 0.1);
}

/* -----------------------------------------------------------------------------
   Legacy styles (deprecated v1.4, kept for compat)
   ----------------------------------------------------------------------------- */
.calendar-breadcrumb__clear { margin-left: auto; }
.calendar-filters-container { display: none; }
.calendar-filters-content { display: none; }
.calendar-filters--collapsed { display: none; }

/* -----------------------------------------------------------------------------
   Responsive - diseñado para tablet HD
   ----------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .calendar-viewport {
        height: auto;
        overflow: visible;
    }

    .calendar-content {
        overflow: visible;
        padding: var(--space-2);
    }

    .calendar-back-to-group {
        flex-direction: column;
        align-items: stretch;
        margin: calc(-1 * var(--space-2)) calc(-1 * var(--space-2)) var(--space-2) calc(-1 * var(--space-2));
    }

    .calendar-back-to-group__meta {
        justify-content: flex-start;
        font-size: var(--text-sm);
    }

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

    .calendar-legend {
        gap: var(--space-3);
        padding: var(--space-2) 0;
        font-size: var(--text-xs);
    }
}

/* -----------------------------------------------------------------------------
   Responsive móvil
   ----------------------------------------------------------------------------- */
@media (max-width: 640px) {
    .calendar-grid {
        grid-template-columns: 1fr;
    }
    
    .calendar-day-header {
        display: none;
    }
    
    .session-item {
        font-size: var(--text-sm);
    }
}