/* Calendar Page Styles */

/* Calendar Container */
.calendar-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - var(--header-height) - var(--space-12));
    gap: var(--space-4);
}

/* Calendar Header */
.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-6);
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.calendar-navigation {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.calendar-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.calendar-nav-btn:hover {
    background-color: var(--color-bg-hover);
    border-color: var(--color-border-light);
    color: var(--color-text-primary);
}

.calendar-nav-btn svg {
    width: 20px;
    height: 20px;
}

.calendar-title {
    margin: 0;
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    min-width: 200px;
    text-align: center;
}

.calendar-actions {
    display: flex;
    gap: var(--space-3);
}

/* Accent button variant */
.btn-accent {
    color: white;
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-accent:hover:not(:disabled) {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
}

/* Calendar Main - Contains Grid and Legend */
.calendar-main {
    flex: 1;
    display: flex;
    gap: var(--space-4);
    overflow: hidden;
}

/* Calendar Grid */
.calendar-grid {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

/* Weekdays Header */
.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    border-bottom: 2px solid var(--color-border);
    background-color: var(--color-bg-elevated);
}

.calendar-weekday {
    padding: var(--space-3);
    text-align: center;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
}

/* Calendar Days Grid */
.calendar-days {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-auto-rows: 1fr;
}

/* Calendar Day Cell */
.calendar-day {
    border-right: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    min-height: 100px;
}

.calendar-day:nth-child(7n) {
    border-right: none;
}

.calendar-day--other-month {
    background-color: var(--color-bg-primary);
    opacity: 0.5;
}

.calendar-day--today {
    background-color: rgba(59, 130, 246, 0.05);
}

.calendar-day--today .calendar-day__number {
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Day Header */
.calendar-day__header {
    margin-bottom: var(--space-2);
}

.calendar-day__number {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
}

/* Day Content */
.calendar-day__content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    overflow-y: clip;
}

/* Scrollbar for day content */
.calendar-day__content::-webkit-scrollbar {
    width: 4px;
}

.calendar-day__content::-webkit-scrollbar-track {
    background: transparent;
}

.calendar-day__content::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-sm);
}

/* Calendar Event - Spanning Item */
.calendar-event {
    background-color: var(--color-accent);
    color: white;
    padding: var(--space-1) var(--space-2);
    border-radius: 0;
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: opacity var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    position: relative;
}

.calendar-event:hover {
    opacity: 0.9;
}

.calendar-event--single {
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-1);
}

.calendar-event--start {
    border-top-left-radius: var(--radius-sm);
    border-bottom-left-radius: var(--radius-sm);
    margin-right: calc(-1 * var(--space-2));
    padding-right: calc(var(--space-2) + var(--space-2) + 1px);
}

.calendar-event--middle {
    margin-left: calc(-1 * var(--space-2));
    margin-right: calc(-1 * var(--space-2));
    padding-left: calc(var(--space-2) + var(--space-2) + 1px);
    padding-right: calc(var(--space-2) + var(--space-2) + 1px);
}

.calendar-event--end {
    border-top-right-radius: var(--radius-sm);
    border-bottom-right-radius: var(--radius-sm);
    margin-bottom: var(--space-1);
    margin-left: calc(-1 * var(--space-2));
    padding-left: calc(var(--space-2) + var(--space-2) + 1px);
}

.calendar-event__time {
    font-size: var(--text-xs);
    opacity: 0.9;
}

.calendar-event__name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Calendar Task - In Cell Item */
.calendar-task {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1);
    background-color: var(--color-bg-elevated);
    border-left: 2px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.calendar-task:hover {
    background-color: var(--color-bg-hover);
    transform: translateX(2px);
}

.calendar-task svg {
    flex-shrink: 0;
    color: var(--color-primary);
}

.calendar-task__name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--color-text-primary);
}

.calendar-task--overdue {
    border-left-color: var(--color-error);
}

.calendar-task--overdue svg {
    color: var(--color-error);
}

.calendar-task--overdue .calendar-task__name {
    color: var(--color-error);
}

.calendar-task--imminent {
    border-left-color: var(--color-warning);
}

.calendar-task--imminent svg {
    color: var(--color-warning);
}

.calendar-task--imminent .calendar-task__name {
    color: var(--color-warning);
}

/* Calendar Legend */
.calendar-legend {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-4);
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    min-width: 160px;
}

.calendar-legend__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.calendar-legend__color {
    width: 20px;
    height: 12px;
    border-radius: var(--radius-sm);
}

.calendar-legend__color--task {
    background-color: var(--color-primary);
}

.calendar-legend__color--event {
    background-color: var(--color-accent);
}

.calendar-legend__color--overdue {
    background-color: var(--color-error);
}

.calendar-legend__color--imminent {
    background-color: var(--color-warning);
}

/* Responsive */
@media (max-width: 1024px) {
    .calendar-main {
        flex-direction: column;
    }

    .calendar-legend {
        flex-direction: row;
        justify-content: center;
        min-width: auto;
        gap: var(--space-4);
    }

    .calendar-header {
        flex-direction: column;
        gap: var(--space-4);
        padding: var(--space-3);
    }

    .calendar-actions {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .calendar-day {
        min-height: 70px;
        padding: var(--space-1-5);
    }

    .calendar-event__time {
        display: none;
    }
}

@media (max-width: 768px) {
    .calendar-container {
        height: auto;
        gap: var(--space-2);
    }

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

    .calendar-title {
        font-size: var(--text-lg);
        min-width: 150px;
    }

    .calendar-nav-btn {
        width: 32px;
        height: 32px;
    }

    .calendar-nav-btn svg {
        width: 16px;
        height: 16px;
    }

    .calendar-actions {
        gap: var(--space-2);
    }

    .calendar-actions .btn {
        font-size: var(--text-xs);
        padding: var(--space-1-5) var(--space-2);
    }

    .calendar-actions .btn svg {
        width: 14px;
        height: 14px;
    }

    .calendar-weekday {
        padding: var(--space-1-5);
        font-size: 10px;
    }

    .calendar-day {
        min-height: 60px;
        padding: var(--space-1);
    }

    .calendar-day__number {
        font-size: 11px;
    }

    .calendar-day--today .calendar-day__number {
        width: 22px;
        height: 22px;
        font-size: 10px;
    }

    .calendar-event,
    .calendar-task {
        font-size: 9px;
        padding: 2px 3px;
        gap: 2px;
    }

    .calendar-event__name,
    .calendar-task__name {
        max-width: 100%;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .calendar-task svg {
        width: 10px;
        height: 10px;
    }

    .calendar-legend {
        flex-wrap: wrap;
        gap: var(--space-2);
        padding: var(--space-2);
    }

    .calendar-legend__item {
        font-size: 11px;
        gap: var(--space-1);
    }

    .calendar-legend__color {
        width: 16px;
        height: 10px;
    }
}