/* Calendar grid */
.calendar-grid {
    display: grid;
    grid-template-columns: 56px repeat(7, 1fr);
    border: 1px solid oklch(var(--bc) / 0.1);
    border-radius: 0.5rem;
    overflow: hidden;
    position: relative;
}
.calendar-time-header {
    background: oklch(var(--b2));
    border-bottom: 1px solid oklch(var(--bc) / 0.1);
    border-right: 1px solid oklch(var(--bc) / 0.1);
}
.calendar-day-header {
    text-align: center;
    padding: 0.25rem 0;
    background: oklch(var(--b2));
    border-bottom: 1px solid oklch(var(--bc) / 0.1);
    border-right: 1px solid oklch(var(--bc) / 0.05);
}
.calendar-day-header:last-child { border-right: none; }
.calendar-today { background: oklch(var(--p) / 0.07); }
.calendar-time-label {
    font-size: 0.675rem;
    padding: 0.25rem 0.375rem;
    text-align: right;
    color: oklch(var(--bc) / 0.5);
    border-right: 1px solid oklch(var(--bc) / 0.1);
    border-bottom: 1px solid oklch(var(--bc) / 0.05);
    height: 3.5rem;
}
.calendar-cell {
    border-right: 1px solid oklch(var(--bc) / 0.05);
    border-bottom: 1px solid oklch(var(--bc) / 0.05);
    height: 3.5rem;
}
.calendar-cell:nth-child(8n) { border-right: none; }
.calendar-cell-today { background: oklch(var(--p) / 0.03); }

/* Calendar event overlay */
.calendar-overlay {
    display: grid;
    grid-template-columns: 56px repeat(7, 1fr);
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    pointer-events: none;
}
.calendar-overlay-time {
    /* matches the time column + day header height */
}
.calendar-day-column {
    position: relative;
    /* total height = header row + 13 hour slots at 3.5rem each */
    height: calc(13 * 3.5rem);
    margin-top: calc(0.25rem + 1rem + 1.5rem + 1px); /* day header height approx */
    pointer-events: auto;
}
.calendar-event {
    position: absolute;
    left: 2px;
    right: 2px;
    border-left: 3px solid;
    border-radius: 0.25rem;
    padding: 0.125rem 0.25rem;
    overflow: hidden;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    z-index: 1;
    min-height: 1.25rem;
    transition: box-shadow 0.15s;
}
.calendar-event:hover {
    box-shadow: 0 2px 8px oklch(var(--bc) / 0.15);
    z-index: 2;
}

/* Responsive: stack on mobile */
@media (max-width: 768px) {
    .calendar-grid {
        grid-template-columns: 40px repeat(7, 1fr);
    }
    .calendar-overlay {
        grid-template-columns: 40px repeat(7, 1fr);
    }
    .calendar-time-label {
        font-size: 0.6rem;
        padding: 0.125rem 0.25rem;
    }
    .calendar-event {
        font-size: 0.625rem;
    }
}

/* Wrapper for positioning */
#calendar-grid {
    position: relative;
}

/* HTMX request-in-flight: swap button text + show spinner */
.htmx-request .btn-loading .btn-loading-text {
    display: inline;
}
.htmx-request .btn-loading .btn-default-text {
    display: none;
}
.htmx-request .btn-loading .loading {
    display: inline-block;
}
.btn-loading .btn-loading-text {
    display: none;
}
.btn-loading .loading {
    display: none;
}

/* Accessibility: focus-visible fallback */
:focus-visible {
    outline: 2px solid oklch(var(--p));
    outline-offset: 2px;
}