/* ============================================================
   ZenScheduler — Global CSS (zen- prefixed, no scoping needed)
   All classes prefixed with zen-scheduler- to avoid conflicts.
   Uses design tokens from ZenithUI Core.
   ============================================================ */

/* ─────────────────────────────────────────────────────────────────
   UNLAYERED coexistence guards — see zen-grid.css for rationale.
   ───────────────────────────────────────────────────────────────── */
button.zen-scheduler-toolbar-btn {
    border: 1px solid var(--zen-border, #E2E5EC);
    border-radius: var(--zen-radius-action);
    background: var(--zen-bg-base, #FFFFFF);
    color: var(--zen-text-primary, #1A1D27);
    font-family: inherit;
    cursor: pointer;
}

button.zen-scheduler-toolbar-btn--active {
    background: var(--zen-accent, #4F7FFF);
    color: #FFFFFF;
    border-color: var(--zen-accent, #4F7FFF);
}

@layer zenith-components {


/* === Scheduler Container === */
.zen-scheduler {
    position: relative;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--zen-card-border);
    border-radius: var(--zen-radius-card);
    box-shadow: var(--zen-elev-card);
    overflow: hidden;
    background: var(--zen-bg-base, #FFFFFF);
    font-family: var(--zen-font-family, system-ui, sans-serif);
    font-size: var(--zen-font-size-base, 13px);
    color: var(--zen-text-primary, #1A1D27);
}

.zen-scheduler-body {
    flex: 1;
    overflow: hidden;
}

/* === Toolbar === */
.zen-scheduler-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--zen-space-2, 8px) var(--zen-space-3, 12px);
    border-bottom: 1px solid var(--zen-border, #E2E5EC);
    background: var(--zen-bg-surface, #F8F9FB);
    gap: var(--zen-space-3, 12px);
    flex-shrink: 0;
}

.zen-scheduler-toolbar-nav {
    display: flex;
    align-items: center;
    gap: var(--zen-space-1, 4px);
}

.zen-scheduler-toolbar-title {
    font-size: var(--zen-font-size-lg, 16px);
    font-weight: var(--zen-font-weight-semibold, 600);
    margin: 0;
    white-space: nowrap;
}

.zen-scheduler-toolbar-views {
    display: flex;
    gap: var(--zen-space-1, 4px);
}

.zen-scheduler-toolbar-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: calc(var(--zen-control-h) - 4px);
    padding: 0 var(--zen-space-3, 12px);
    border: 1px solid var(--zen-border, #E2E5EC);
    border-radius: var(--zen-radius-action);
    background: var(--zen-bg-base, #FFFFFF);
    color: var(--zen-text-primary, #1A1D27);
    font-size: var(--zen-font-size-sm, 12px);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.zen-scheduler-toolbar-btn:hover {
    background: var(--zen-bg-muted, #F0F2F5);
    border-color: var(--zen-border-strong);
}

[data-zen-skin="material"] .zen-scheduler-toolbar-btn {
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: var(--zen-font-weight-medium, 500);
}

.zen-scheduler-toolbar-btn--active {
    background: var(--zen-accent, #4F7FFF);
    color: #FFFFFF;
    border-color: var(--zen-accent, #4F7FFF);
}

.zen-scheduler-toolbar-btn--active:hover {
    background: var(--zen-accent-hover, #6B95FF);
    border-color: var(--zen-accent-hover, #6B95FF);
}

.zen-scheduler-toolbar-btn--today {
    font-weight: var(--zen-font-weight-medium, 500);
}

/* Toolbar content slots */
.zen-scheduler-toolbar-start,
.zen-scheduler-toolbar-end {
    display: flex;
    align-items: center;
    gap: var(--zen-space-2, 8px);
}

/* Resource filter */
.zen-scheduler-resource-filter {
    position: relative;
}

.zen-scheduler-resource-filter__trigger {
    gap: var(--zen-space-1, 4px);
}

.zen-scheduler-resource-filter__arrow {
    font-size: 10px;
    opacity: 0.6;
}

.zen-scheduler-resource-filter__backdrop {
    position: fixed;
    inset: 0;
    z-index: 19;
}

.zen-scheduler-resource-filter__dropdown {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    z-index: 20;
    background: var(--zen-bg-base, #FFFFFF);
    border: 1px solid var(--zen-border, #E2E5EC);
    border-radius: var(--zen-radius-menu);
    padding: var(--zen-space-2, 8px);
    box-shadow: var(--zen-elev-overlay);
    min-width: 200px;
    display: flex;
    flex-direction: column;
    gap: var(--zen-space-1, 4px);
}

.zen-scheduler-resource-filter__option {
    display: flex;
    align-items: center;
    width: 100%;
    padding: var(--zen-space-2, 8px) var(--zen-space-3, 12px);
    border: none;
    border-radius: var(--zen-radius-control);
    background: transparent;
    color: var(--zen-text-primary, #1A1D27);
    font-size: var(--zen-font-size-sm, 12px);
    cursor: pointer;
    text-align: left;
    transition: background 0.15s;
}

.zen-scheduler-resource-filter__option:hover {
    background: var(--zen-bg-muted, #F0F2F5);
}

.zen-scheduler-resource-filter__option--active {
    background: var(--zen-accent-subtle, rgba(79, 127, 255, 0.1));
    color: var(--zen-accent, #4F7FFF);
    font-weight: var(--zen-font-weight-medium, 500);
}

.zen-scheduler-resource-filter__divider {
    height: 1px;
    background: var(--zen-border, #E2E5EC);
    margin: var(--zen-space-1, 4px) 0;
}

.zen-scheduler-resource-filter__resource {
    display: flex;
    align-items: center;
    gap: var(--zen-space-2, 8px);
    padding: var(--zen-space-1, 4px) var(--zen-space-3, 12px);
    font-size: var(--zen-font-size-sm, 12px);
    cursor: pointer;
    border-radius: var(--zen-radius-control);
    transition: background 0.15s;
}

.zen-scheduler-resource-filter__resource:hover {
    background: var(--zen-bg-muted, #F0F2F5);
}

.zen-scheduler-resource-filter__resource input[type="checkbox"] {
    accent-color: var(--zen-accent, #4F7FFF);
}

.zen-scheduler-resource-filter__dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.zen-scheduler-resource-filter__shared-label {
    padding: var(--zen-space-2, 8px) var(--zen-space-3, 12px);
    font-size: var(--zen-font-size-xs, 11px);
    font-weight: var(--zen-font-weight-semibold, 600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--zen-text-tertiary);
}

.zen-scheduler-resource-filter__resource--shared {
    cursor: default;
    opacity: 0.85;
}

.zen-scheduler-resource-filter__resource--shared:hover {
    background: transparent;
}

/* === Time Grid (shared by Week/Day views) === */
.zen-scheduler-timegrid {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.zen-scheduler-timegrid__day-headers {
    display: grid;
    grid-template-columns: var(--zen-scheduler-time-column-width, 60px) 1fr;
    border-bottom: 1px solid var(--zen-border, #E2E5EC);
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 5;
    background: var(--zen-bg-surface, #F8F9FB);
}

.zen-scheduler-timegrid__day-headers-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
}

.zen-scheduler-timegrid__day-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--zen-space-2, 8px) 0;
    font-size: var(--zen-font-size-sm, 12px);
    border-right: 1px solid var(--zen-border-muted, #E2E5EC);
}

.zen-scheduler-timegrid__day-header--today .zen-scheduler-timegrid__day-number {
    background: var(--zen-accent, #4F7FFF);
    color: #FFFFFF;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--zen-font-weight-semibold, 600);
}

.zen-scheduler-timegrid__day-header--group {
    border-bottom: 1px solid var(--zen-border-muted, #E2E5EC);
}

.zen-scheduler-timegrid__day-headers--sub {
    border-bottom: 1px solid var(--zen-border, #E2E5EC);
}

.zen-scheduler-timegrid__day-headers--sub .zen-scheduler-timegrid__column-header {
    padding: var(--zen-space-1, 4px);
    font-size: var(--zen-font-size-xs, 11px);
}

.zen-scheduler-timegrid__day-name {
    color: var(--zen-text-tertiary);
    text-transform: uppercase;
    font-size: var(--zen-font-size-xs, 11px);
    letter-spacing: 0.05em;
}

.zen-scheduler-timegrid__day-number {
    font-size: var(--zen-font-size-md, 14px);
    font-weight: var(--zen-font-weight-medium, 500);
    margin-top: 2px;
}

/* All-day row */
.zen-scheduler-timegrid__allday {
    display: grid;
    grid-template-columns: var(--zen-scheduler-time-column-width, 60px) 1fr;
    border-bottom: 1px solid var(--zen-border, #E2E5EC);
    min-height: 36px;
    flex-shrink: 0;
}

.zen-scheduler-timegrid__allday-events {
    display: grid;
    gap: 2px;
    padding: var(--zen-space-1, 4px);
}

.zen-scheduler-timegrid__allday-cell {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 2px;
    border-right: 1px solid var(--zen-border-muted, #E2E5EC);
}

/* Scrollable time grid */
.zen-scheduler-timegrid__scroll {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

.zen-scheduler-timegrid__grid {
    display: grid;
    grid-template-columns: var(--zen-scheduler-time-column-width, 60px) 1fr;
    min-height: 100%;
}

.zen-scheduler-timegrid__time-axis {
    border-right: 1px solid var(--zen-border, #E2E5EC);
}

.zen-scheduler-timegrid__time-label {
    box-sizing: border-box;
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    padding: 0 var(--zen-space-2, 8px);
    font-size: var(--zen-font-size-xs, 11px);
    color: var(--zen-text-tertiary);
    position: relative;
    top: -6px;
}

.zen-scheduler-timegrid__columns {
    display: grid;
    position: relative;
}

.zen-scheduler-timegrid__column {
    position: relative;
    border-right: 1px solid var(--zen-border-muted, #E2E5EC);
}

.zen-scheduler-timegrid__column--today {
    background: var(--zen-accent-muted, rgba(79, 127, 255, 0.04));
}

/* All-day event column highlight */
.zen-scheduler-timegrid__column--allday {
    background: color-mix(in srgb, var(--zen-allday-color, #4F7FFF) 6%, transparent);
}

.zen-scheduler-timegrid__column--allday.zen-scheduler-timegrid__column--today {
    background: color-mix(in srgb, var(--zen-allday-color, #4F7FFF) 8%, transparent);
}

/* Drag target column highlight */
.zen-scheduler-timegrid__column--drag-target {
    background: var(--zen-accent-muted, rgba(79, 127, 255, 0.08));
}

.zen-scheduler-timegrid__slot {
    box-sizing: border-box;
    border-bottom: 1px solid var(--zen-border-muted, #E2E5EC);
}

.zen-scheduler-timegrid__slot:nth-child(even) {
    border-bottom-style: dashed;
}

.zen-scheduler-timegrid__slot--clickable {
    cursor: pointer;
}

.zen-scheduler-timegrid__slot--clickable:hover {
    background: var(--zen-accent-muted, rgba(79, 127, 255, 0.06));
}

.zen-scheduler-timegrid__slot--blocked {
    background: var(--zen-bg-sunken);
    background-image: repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 4px,
        rgba(0, 0, 0, 0.04) 4px,
        rgba(0, 0, 0, 0.04) 8px
    );
    cursor: not-allowed;
    position: relative;
}

.zen-scheduler-timegrid__slot-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--zen-font-size-xs, 11px);
    color: var(--zen-text-tertiary);
    white-space: nowrap;
    pointer-events: none;
}

/* Events container (absolute positioning) */
.zen-scheduler-timegrid__events-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

/* Resource headers */
.zen-scheduler-timegrid__column-headers {
    display: grid;
    border-bottom: 1px solid var(--zen-border, #E2E5EC);
}

.zen-scheduler-timegrid__column-header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--zen-space-2, 8px);
    font-size: var(--zen-font-size-sm, 12px);
    font-weight: var(--zen-font-weight-medium, 500);
    border-right: 1px solid var(--zen-border-muted, #E2E5EC);
}

.zen-scheduler-timegrid__column-bodies {
    display: grid;
    position: relative;
}

/* Shared events overlay — spans all personal resource columns in Day view */
.zen-scheduler-timegrid__shared-overlay {
    position: absolute;
    inset: 0;
    grid-column: 1 / -1;
    pointer-events: none;
    z-index: 2;
}

.zen-scheduler-timegrid__shared-overlay .zen-scheduler-event {
    pointer-events: auto;
}

.zen-scheduler-event--shared {
    opacity: 0.92;
    background-image: repeating-linear-gradient(
        135deg,
        transparent,
        transparent 8px,
        rgba(255, 255, 255, 0.08) 8px,
        rgba(255, 255, 255, 0.08) 16px
    );
    border-left: 3px solid rgba(255, 255, 255, 0.4);
    box-shadow: var(--zen-shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.15));
}

/* === Event Item === */
.zen-scheduler-event {
    box-sizing: border-box;
    position: absolute;
    border-radius: var(--zen-radius-control);
    padding: var(--zen-space-1, 4px) var(--zen-space-2, 8px);
    font-size: var(--zen-font-size-xs, 11px);
    line-height: 1.3;
    overflow: hidden;
    cursor: pointer;
    pointer-events: auto;
    z-index: var(--zen-z-base, 1);
    background: var(--zen-scheduler-event-color, var(--zen-accent, #4F7FFF));
    color: #FFFFFF;
    border-left: 3px solid color-mix(in srgb, var(--zen-scheduler-event-color, var(--zen-accent)) 70%, black);
    transition: box-shadow 0.15s, transform 0.1s;
}

.zen-scheduler-event:hover {
    box-shadow: var(--zen-shadow-md, 0 2px 8px rgba(0, 0, 0, 0.15));
    z-index: 2;
}

.zen-scheduler-event:focus-visible {
    outline: none;
    box-shadow: var(--zen-focus-shadow);
}

.zen-scheduler-event--focused {
    box-shadow: var(--zen-focus-shadow);
    z-index: 3;
}

.zen-scheduler-event__title {
    display: block;
    font-weight: var(--zen-font-weight-medium, 500);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.zen-scheduler-event__time {
    display: block;
    opacity: 0.85;
    font-size: 10px;
    white-space: nowrap;
}

/* Tooltip */
.zen-scheduler-event__tooltip {
    position: absolute;
    left: 100%;
    top: 0;
    margin-left: var(--zen-space-2, 8px);
    z-index: var(--zen-z-tooltip, 100);
    background: var(--zen-bg-base, #FFFFFF);
    color: var(--zen-text-primary, #1A1D27);
    border: 1px solid var(--zen-border, #E2E5EC);
    border-radius: var(--zen-radius-menu);
    box-shadow: var(--zen-elev-overlay);
    padding: var(--zen-space-3, 12px);
    min-width: 180px;
    max-width: 280px;
    font-size: var(--zen-font-size-sm, 12px);
    pointer-events: none;
    white-space: normal;
}

/* === Month View === */
.zen-scheduler-month {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.zen-scheduler-month__header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    border-bottom: 1px solid var(--zen-border, #E2E5EC);
    flex-shrink: 0;
}

.zen-scheduler-month__header-cell {
    padding: var(--zen-space-2, 8px);
    text-align: center;
    font-size: var(--zen-font-size-xs, 11px);
    font-weight: var(--zen-font-weight-medium, 500);
    color: var(--zen-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.zen-scheduler-month__week {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 100px;
    border-bottom: 1px solid var(--zen-border-muted, #E2E5EC);
}

.zen-scheduler-month__week:last-child {
    border-bottom: none;
}

/* Multi-day event lanes */
.zen-scheduler-month__lanes {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    padding: 0 2px;
    gap: 2px;
}

.zen-scheduler-month__lane-event {
    min-height: 20px;
}

.zen-scheduler-month__lane-event .zen-scheduler-event {
    position: relative;
    width: 100%;
    padding: 1px var(--zen-space-1, 4px);
}

/* Day cells */
.zen-scheduler-month__days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    flex: 1;
}

.zen-scheduler-month__day {
    position: relative;
    padding: var(--zen-space-1, 4px);
    border-right: 1px solid var(--zen-border-muted, #E2E5EC);
    min-height: 60px;
    cursor: pointer;
    overflow: hidden;
}

.zen-scheduler-month__day:last-child {
    border-right: none;
}

.zen-scheduler-month__day:hover {
    background: var(--zen-bg-muted, #F0F2F5);
}

.zen-scheduler-month__day--today {
    background: var(--zen-accent-muted, rgba(79, 127, 255, 0.06));
}

.zen-scheduler-month__day--other-month {
    opacity: 0.4;
}

.zen-scheduler-month__day-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: var(--zen-font-size-sm, 12px);
    font-weight: var(--zen-font-weight-medium, 500);
    color: var(--zen-text-secondary, #6B7280);
    width: 24px;
    height: 24px;
    margin-bottom: var(--zen-space-1, 4px);
}

.zen-scheduler-month__day--today .zen-scheduler-month__day-number {
    background: var(--zen-accent, #4F7FFF);
    color: #FFFFFF;
    border-radius: 50%;
}

.zen-scheduler-month__day-event {
    margin-bottom: 2px;
}

.zen-scheduler-month__day-event .zen-scheduler-event {
    position: relative;
    width: 100%;
    padding: 1px var(--zen-space-1, 4px);
    font-size: 10px;
}

.zen-scheduler-month__more {
    display: block;
    width: 100%;
    padding: 2px var(--zen-space-1, 4px);
    background: none;
    border: none;
    font-size: var(--zen-font-size-xs, 11px);
    color: var(--zen-accent, #4F7FFF);
    cursor: pointer;
    text-align: left;
    font-weight: var(--zen-font-weight-medium, 500);
}

.zen-scheduler-month__more:hover {
    text-decoration: underline;
}

/* === Agenda View === */
.zen-scheduler-agenda {
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    height: 100%;
    padding: var(--zen-space-2, 8px) 0;
}

.zen-scheduler-agenda__empty {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--zen-space-6, 24px);
    color: var(--zen-text-tertiary);
    font-size: var(--zen-font-size-md, 14px);
}

.zen-scheduler-agenda__day {
    padding: 0 var(--zen-space-3, 12px);
    margin-bottom: var(--zen-space-2, 8px);
}

.zen-scheduler-agenda__day-header {
    display: flex;
    align-items: baseline;
    gap: var(--zen-space-2, 8px);
    padding: var(--zen-space-2, 8px) 0;
    border-bottom: 1px solid var(--zen-border-muted, #E2E5EC);
    margin-bottom: var(--zen-space-1, 4px);
}

.zen-scheduler-agenda__day--today .zen-scheduler-agenda__day-header {
    border-bottom-color: var(--zen-accent, #4F7FFF);
}

.zen-scheduler-agenda__day-name {
    font-weight: var(--zen-font-weight-semibold, 600);
    font-size: var(--zen-font-size-md, 14px);
    color: var(--zen-text-primary, #1A1D27);
}

.zen-scheduler-agenda__day--today .zen-scheduler-agenda__day-name {
    color: var(--zen-accent, #4F7FFF);
}

.zen-scheduler-agenda__day-date {
    font-size: var(--zen-font-size-sm, 12px);
    color: var(--zen-text-tertiary);
}

.zen-scheduler-agenda__events {
    display: flex;
    flex-direction: column;
    gap: var(--zen-space-1, 4px);
}

.zen-scheduler-agenda__event {
    display: flex;
    align-items: center;
    gap: var(--zen-space-3, 12px);
    padding: var(--zen-space-2, 8px) var(--zen-space-3, 12px);
    border-radius: var(--zen-radius-control);
    cursor: pointer;
    transition: background 0.15s;
}

.zen-scheduler-agenda__event:hover {
    background: var(--zen-bg-muted, #F0F2F5);
}

.zen-scheduler-agenda__event:focus-visible {
    outline: none;
    box-shadow: var(--zen-focus-shadow);
}

.zen-scheduler-agenda__event-color {
    width: 4px;
    height: 32px;
    border-radius: 2px;
    background: var(--zen-scheduler-event-color, var(--zen-accent, #4F7FFF));
    flex-shrink: 0;
}

.zen-scheduler-agenda__event-time {
    display: flex;
    flex-direction: column;
    min-width: 60px;
    font-size: var(--zen-font-size-sm, 12px);
    color: var(--zen-text-tertiary);
    line-height: 1.4;
}

.zen-scheduler-agenda__event-title {
    font-size: var(--zen-font-size-base, 13px);
    font-weight: var(--zen-font-weight-medium, 500);
    color: var(--zen-text-primary, #1A1D27);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* === Timeline View === */
.zen-scheduler-timeline {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.zen-scheduler-timeline__header {
    display: flex;
    border-bottom: 1px solid var(--zen-border, #E2E5EC);
    flex-shrink: 0;
}

.zen-scheduler-timeline__resource-label {
    min-width: var(--zen-scheduler-timeline-resource-width, 140px);
    max-width: var(--zen-scheduler-timeline-resource-width, 140px);
    border-right: 1px solid var(--zen-border, #E2E5EC);
}

.zen-scheduler-timeline__time-headers {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.zen-scheduler-timeline__time-header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--zen-space-2, 8px) 0;
    font-size: var(--zen-font-size-xs, 11px);
    color: var(--zen-text-tertiary);
    border-right: 1px solid var(--zen-border-muted, #E2E5EC);
}

.zen-scheduler-timeline__body {
    flex: 1;
    overflow-y: auto;
    overflow-x: auto;
}

.zen-scheduler-timeline__row {
    display: flex;
    min-height: 48px;
    border-bottom: 1px solid var(--zen-border-muted, #E2E5EC);
}

.zen-scheduler-timeline__resource-cell {
    min-width: var(--zen-scheduler-timeline-resource-width, 140px);
    max-width: var(--zen-scheduler-timeline-resource-width, 140px);
    display: flex;
    align-items: center;
    padding: 0 var(--zen-space-3, 12px);
    border-right: 1px solid var(--zen-border, #E2E5EC);
    background: var(--zen-bg-surface, #F8F9FB);
    font-size: var(--zen-font-size-sm, 12px);
    font-weight: var(--zen-font-weight-medium, 500);
    flex-shrink: 0;
}

.zen-scheduler-timeline__slots {
    display: grid;
    flex: 1;
    position: relative;
}

.zen-scheduler-timeline__slot {
    border-right: 1px solid var(--zen-border-muted, #E2E5EC);
}

.zen-scheduler-timeline__slot--blocked {
    background: var(--zen-bg-sunken);
    background-image: repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 4px,
        rgba(0, 0, 0, 0.04) 4px,
        rgba(0, 0, 0, 0.04) 8px
    );
}

.zen-scheduler-timeline__events {
    position: absolute;
    top: 4px;
    bottom: 4px;
    left: 0;
    right: 0;
    pointer-events: none;
}

.zen-scheduler-timeline__event {
    box-sizing: border-box;
    position: absolute;
    top: 0;
    bottom: 0;
    border-radius: var(--zen-radius-control);
    background: var(--zen-scheduler-event-color, var(--zen-accent, #4F7FFF));
    color: #FFFFFF;
    padding: 2px var(--zen-space-2, 8px);
    font-size: var(--zen-font-size-xs, 11px);
    overflow: hidden;
    cursor: pointer;
    pointer-events: auto;
    display: flex;
    align-items: center;
    border-left: 3px solid color-mix(in srgb, var(--zen-scheduler-event-color, var(--zen-accent)) 70%, black);
    transition: box-shadow 0.15s;
}

.zen-scheduler-timeline__event:hover {
    box-shadow: var(--zen-shadow-md, 0 2px 8px rgba(0, 0, 0, 0.15));
    z-index: 2;
}

.zen-scheduler-timeline__event-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: var(--zen-font-weight-medium, 500);
}

/* === Responsive / Adaptive === */
@media (max-width: 768px) {
    .zen-scheduler-toolbar {
        flex-wrap: wrap;
        gap: var(--zen-space-2, 8px);
    }

    .zen-scheduler-toolbar-title {
        order: -1;
        width: 100%;
        text-align: center;
        font-size: var(--zen-font-size-md, 14px);
    }

    .zen-scheduler-toolbar-nav {
        flex: 1;
        justify-content: flex-start;
    }

    .zen-scheduler-toolbar-views {
        flex: 1;
        justify-content: flex-end;
        flex-wrap: wrap;
    }

    .zen-scheduler-toolbar-btn {
        padding: 0 var(--zen-space-2, 8px);
        font-size: var(--zen-font-size-xs, 11px);
        height: 30px;
    }

    .zen-scheduler-timegrid__day-header {
        padding: var(--zen-space-1, 4px) 0;
    }

    .zen-scheduler-timegrid__day-name {
        font-size: 10px;
    }

    .zen-scheduler-timegrid__day-number {
        font-size: var(--zen-font-size-sm, 12px);
    }

    .zen-scheduler-event {
        padding: 2px var(--zen-space-1, 4px);
        font-size: 10px;
    }

    .zen-scheduler-event__time {
        display: none;
    }

    .zen-scheduler-month__day-number {
        font-size: var(--zen-font-size-xs, 11px);
        width: 20px;
        height: 20px;
    }

    .zen-scheduler-month__header-cell {
        font-size: 10px;
        padding: var(--zen-space-1, 4px);
    }

    .zen-scheduler-month__day {
        padding: 2px;
        min-height: 48px;
    }

    .zen-scheduler-agenda__event {
        gap: var(--zen-space-2, 8px);
        padding: var(--zen-space-2, 8px);
    }

    .zen-scheduler-agenda__event-time {
        min-width: 48px;
        font-size: var(--zen-font-size-xs, 11px);
    }
}

@media (max-width: 480px) {
    .zen-scheduler-toolbar-views {
        display: none;
    }

    .zen-scheduler-timegrid__time-label {
        font-size: 10px;
    }

    .zen-scheduler {
        --zen-scheduler-time-column-width: 44px;
    }

    .zen-scheduler-month__header-cell {
        padding: 2px;
    }

    .zen-scheduler-month__day {
        min-height: 36px;
    }

    .zen-scheduler-edit-popup {
        min-width: auto;
        max-width: calc(100vw - 32px);
        margin: var(--zen-space-2, 8px);
    }
}

/* === Drag & Drop === */
.zen-scheduler-event--dragging {
    opacity: 0.85;
    box-shadow: var(--zen-elev-overlay);
    z-index: 10 !important;
    cursor: grabbing;
}

.zen-scheduler-event--resizing {
    z-index: 10 !important;
    cursor: ns-resize;
}

/* === Resize Handle === */
.zen-scheduler-event__resize-handle {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 6px;
    cursor: ns-resize;
    border-radius: 0 0 var(--zen-radius-control) var(--zen-radius-control);
    background: transparent;
    transition: background 0.15s;
}

.zen-scheduler-event:hover .zen-scheduler-event__resize-handle {
    background: rgba(255, 255, 255, 0.3);
}

/* === Current Time Indicator === */
.zen-scheduler-time-indicator {
    position: absolute;
    left: var(--zen-scheduler-time-column-width, 60px);
    right: 0;
    z-index: var(--zen-z-elevated, 5);
    pointer-events: none;
    display: flex;
    align-items: center;
}

.zen-scheduler-time-indicator__dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--zen-danger, #EF4444);
    margin-left: -5px;
    flex-shrink: 0;
}

.zen-scheduler-time-indicator__line {
    flex: 1;
    height: 2px;
    background: var(--zen-danger, #EF4444);
}

/* === Quick Info Popup === */
.zen-scheduler-overlay--transparent {
    background: transparent;
}

.zen-scheduler-quickinfo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--zen-bg-elevated);
    border-radius: var(--zen-radius-menu);
    box-shadow: var(--zen-elev-overlay);
    padding: var(--zen-space-3, 12px);
    min-width: 240px;
    max-width: 360px;
    z-index: var(--zen-z-modal, 1000);
}

/* === Context Menu === */
.zen-scheduler-contextmenu {
    position: fixed;
    background: var(--zen-bg-elevated);
    border: 1px solid var(--zen-border, #E2E5EC);
    border-radius: var(--zen-radius-menu);
    box-shadow: var(--zen-elev-overlay);
    padding: var(--zen-space-1, 4px) 0;
    min-width: 160px;
    z-index: var(--zen-z-modal, 1000);
    font-size: var(--zen-font-size-sm, 12px);
}

/* === Edit Popup Overlay === */
.zen-scheduler-overlay {
    position: absolute;
    inset: 0;
    background: var(--zen-overlay, rgba(0, 0, 0, 0.45));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--zen-z-modal, 1000);
}

.zen-scheduler-edit-popup {
    background: var(--zen-bg-elevated);
    border-radius: var(--zen-radius-card);
    box-shadow: var(--zen-elev-overlay);
    padding: var(--zen-space-4, 16px);
    min-width: 320px;
    max-width: 480px;
    max-height: 80%;
    overflow-y: auto;
}

/* === Default Edit Form === */
.zen-scheduler-default-form {
    min-width: 320px;
    color: var(--zen-text-primary, #1F2937);
}

.zen-scheduler-default-form__title {
    margin: 0 0 var(--zen-space-3, 12px) 0;
    font-size: var(--zen-font-size-md, 16px);
    font-weight: var(--zen-font-weight-semibold, 600);
}

.zen-scheduler-default-form__readonly-title {
    padding: var(--zen-space-2, 8px) 0;
    margin-bottom: var(--zen-space-3, 12px);
    font-weight: var(--zen-font-weight-medium, 500);
    color: var(--zen-text-primary, #1F2937);
}

.zen-scheduler-default-form__field {
    margin-bottom: var(--zen-space-3, 12px);
}

.zen-scheduler-default-form__field--inline {
    display: flex;
    align-items: center;
    gap: var(--zen-space-2, 8px);
}

.zen-scheduler-default-form__label {
    display: block;
    font-size: var(--zen-font-size-xs, 12px);
    font-weight: var(--zen-font-weight-medium, 500);
    color: var(--zen-text-secondary, #6B7280);
    margin-bottom: var(--zen-space-1, 4px);
}

.zen-scheduler-default-form__field--inline .zen-scheduler-default-form__label {
    margin-bottom: 0;
    font-size: var(--zen-font-size-sm, 14px);
    color: var(--zen-text-primary, #1F2937);
    cursor: pointer;
}

.zen-scheduler-default-form__input {
    width: 100%;
    padding: var(--zen-space-2, 8px) var(--zen-space-3, 12px);
    background: var(--zen-bg-sunken);
    color: var(--zen-text-primary, #1F2937);
    border: 1px solid var(--zen-border, #D1D5DB);
    border-radius: var(--zen-radius-control);
    font-size: var(--zen-font-size-sm, 14px);
    font-family: inherit;
    box-sizing: border-box;
}

.zen-scheduler-default-form__input:focus {
    outline: none;
    border-color: var(--zen-accent, #4F7FFF);
    box-shadow: var(--zen-focus-shadow);
}

.zen-scheduler-default-form__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--zen-space-2, 8px);
    margin-bottom: var(--zen-space-3, 12px);
}

.zen-scheduler-default-form__error {
    padding: var(--zen-space-2, 8px) var(--zen-space-3, 12px);
    margin-bottom: var(--zen-space-3, 12px);
    background: var(--zen-danger-muted, #FEF2F2);
    border: 1px solid var(--zen-danger, #FECACA);
    border-radius: var(--zen-radius-control);
    font-size: var(--zen-font-size-xs, 12px);
    color: var(--zen-danger-text, #991B1B);
}

.zen-scheduler-default-form__actions {
    display: flex;
    gap: var(--zen-space-2, 8px);
    justify-content: flex-end;
    margin-top: var(--zen-space-4, 16px);
}

.zen-scheduler-default-form__btn {
    padding: var(--zen-space-2, 8px) var(--zen-space-3, 14px);
    border: 1px solid var(--zen-border, #D1D5DB);
    background: transparent;
    color: var(--zen-text-primary, #374151);
    border-radius: var(--zen-radius-action);
    font-size: var(--zen-font-size-sm, 14px);
    font-weight: var(--zen-font-weight-medium, 500);
    cursor: pointer;
    transition: background 0.15s ease;
}

.zen-scheduler-default-form__btn:hover:not(:disabled) {
    background: var(--zen-bg-muted, #F3F4F6);
}

.zen-scheduler-default-form__btn--primary {
    background: var(--zen-accent, #4F7FFF);
    border-color: var(--zen-accent, #4F7FFF);
    color: #FFFFFF;
}

.zen-scheduler-default-form__btn--primary:hover:not(:disabled) {
    background: var(--zen-accent-hover, #3B6BE6);
}

.zen-scheduler-default-form__btn--primary:disabled {
    background: var(--zen-accent-muted, #93C5FD);
    border-color: var(--zen-accent-muted, #93C5FD);
    cursor: not-allowed;
}

.zen-scheduler-default-form__btn--danger {
    color: var(--zen-danger, #EF4444);
    border-color: var(--zen-danger, #EF4444);
    margin-right: auto;
}

.zen-scheduler-default-form__btn--danger:hover:not(:disabled) {
    background: var(--zen-danger-muted, #FEF2F2);
}

/* === Hierarchical Resources === */
.zen-scheduler-resource-header {
    display: flex;
    align-items: center;
    gap: var(--zen-space-1, 4px);
    width: 100%;
}

.zen-scheduler-resource-header--parent {
    font-weight: var(--zen-font-weight-semibold, 600);
}

.zen-scheduler-resource-header__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    padding: 0;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: var(--zen-radius-control);
    color: var(--zen-text-secondary, #6B7280);
    font-size: 10px;
    transition: transform 0.15s, background 0.15s;
    flex-shrink: 0;
}

.zen-scheduler-resource-header__toggle:hover {
    background: var(--zen-bg-hover, rgba(0, 0, 0, 0.05));
}

.zen-scheduler-resource-header__toggle--collapsed {
    transform: rotate(-90deg);
}

.zen-scheduler-resource-header__indent {
    flex-shrink: 0;
}

.zen-scheduler-resource-header__color {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.zen-scheduler-resource-header__title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* === Recurring Event Indicator === */
.zen-scheduler-event__recurrence-icon {
    display: inline-flex;
    align-items: center;
    margin-left: var(--zen-space-1, 4px);
    opacity: 0.7;
    font-size: 10px;
    flex-shrink: 0;
}

.zen-scheduler-event__recurrence-icon::before {
    content: "↻";
}

/* === Recurrence Editor === */
.zen-recurrence-editor {
    display: flex;
    flex-direction: column;
    gap: var(--zen-space-2, 8px);
    font-size: var(--zen-font-size-sm, 12px);
    color: var(--zen-text-primary, #1A1D27);
}

.zen-recurrence-editor__row {
    display: flex;
    align-items: center;
    gap: var(--zen-space-2, 8px);
    flex-wrap: wrap;
}

.zen-recurrence-editor__row--indent {
    padding-left: var(--zen-space-4, 16px);
}

.zen-recurrence-editor__label {
    display: flex;
    align-items: center;
    gap: var(--zen-space-1, 4px);
    font-weight: var(--zen-font-weight-medium, 500);
    min-width: 60px;
    flex-shrink: 0;
}

.zen-recurrence-editor__checkbox {
    accent-color: var(--zen-accent, #4F7FFF);
}

.zen-recurrence-editor__select {
    padding: var(--zen-space-1, 4px) var(--zen-space-2, 8px);
    border: 1px solid var(--zen-border, #E2E5EC);
    border-radius: var(--zen-radius-control);
    background: var(--zen-bg-base, #FFFFFF);
    color: inherit;
    font-size: inherit;
    min-width: 100px;
}

.zen-recurrence-editor__input {
    padding: var(--zen-space-1, 4px) var(--zen-space-2, 8px);
    border: 1px solid var(--zen-border, #E2E5EC);
    border-radius: var(--zen-radius-control);
    background: var(--zen-bg-base, #FFFFFF);
    color: inherit;
    font-size: inherit;
}

.zen-recurrence-editor__input--narrow {
    width: 64px;
    text-align: center;
}

.zen-recurrence-editor__suffix {
    color: var(--zen-text-secondary, #6B7280);
}

.zen-recurrence-editor__days {
    display: flex;
    gap: var(--zen-space-1, 4px);
    flex-wrap: wrap;
}

.zen-recurrence-editor__day {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: calc(var(--zen-control-h) - 4px);
    border: 1px solid var(--zen-border, #E2E5EC);
    border-radius: var(--zen-radius-action);
    cursor: pointer;
    user-select: none;
    font-size: var(--zen-font-size-xs, 11px);
    font-weight: var(--zen-font-weight-medium, 500);
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.zen-recurrence-editor__day:hover {
    border-color: var(--zen-accent, #4F7FFF);
}

.zen-recurrence-editor__day--selected {
    background: var(--zen-accent, #4F7FFF);
    border-color: var(--zen-accent, #4F7FFF);
    color: #FFFFFF;
}

.zen-recurrence-editor__day-checkbox {
    display: none;
}

/* === Slot Selection Overlay === */
.zen-scheduler-slot-selection {
    position: absolute;
    left: 0;
    right: 0;
    background: var(--zen-accent-alpha, rgba(79, 127, 255, 0.15));
    border: 1px solid var(--zen-accent, #4F7FFF);
    border-radius: var(--zen-radius-control);
    pointer-events: none;
    z-index: var(--zen-z-elevated, 5);
}

/* === Month Drag Target === */
.zen-scheduler-month__day--drag-target {
    background: var(--zen-accent-alpha, rgba(79, 127, 255, 0.1)) !important;
    outline: 2px dashed var(--zen-accent, #4F7FFF);
    outline-offset: -2px;
}

.zen-recurrence-editor__summary {
    padding: var(--zen-space-2, 8px);
    background: var(--zen-bg-surface, #F8F9FB);
    border-radius: var(--zen-radius-control);
    color: var(--zen-text-secondary, #6B7280);
    font-size: var(--zen-font-size-xs, 11px);
    font-style: italic;
}

/* === Collaboration === */
.zen-scheduler-collab-users {
    display: flex;
    align-items: center;
    gap: var(--zen-space-1, 4px);
    padding: var(--zen-space-1, 4px) var(--zen-space-3, 12px);
    border-bottom: 1px solid var(--zen-border, #E5E7EB);
    background: var(--zen-bg-surface, #F8F9FB);
}

.zen-scheduler-collab-avatar {
    --zen-collab-color: var(--zen-accent, #4F7FFF);
    position: relative;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid var(--zen-collab-color);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--zen-bg, #FFFFFF);
    cursor: default;
    transition: transform 150ms var(--zen-ease, ease);
    flex-shrink: 0;
}

.zen-scheduler-collab-avatar:hover {
    transform: scale(1.1);
    z-index: 1;
}

.zen-scheduler-collab-avatar--idle {
    opacity: 0.5;
}

.zen-scheduler-collab-avatar--overflow {
    border-style: dashed;
    border-color: var(--zen-text-secondary, #6B7280);
}

.zen-scheduler-collab-avatar__img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.zen-scheduler-collab-avatar__initials {
    font-size: var(--zen-font-size-xs, 11px);
    font-weight: var(--zen-font-weight-semibold, 600);
    color: var(--zen-collab-color);
    line-height: 1;
    user-select: none;
}

.zen-scheduler-collab-avatar--editing {
    animation: zen-collab-pulse 1.5s infinite;
}

@keyframes zen-collab-pulse {
    0%, 100% { box-shadow: 0 0 0 0 var(--zen-collab-color); }
    50% { box-shadow: 0 0 0 3px color-mix(in srgb, var(--zen-collab-color) 30%, transparent); }
}

.zen-scheduler-event--remote-edit {
    outline: 2px dashed var(--zen-collab-color, var(--zen-accent, #4F7FFF));
    outline-offset: 1px;
    opacity: 0.85;
}

/* Dark mode overrides */
@media (prefers-color-scheme: dark) {
    .zen-scheduler-collab-users {
        background: var(--zen-bg-surface-dark, #1F2937);
        border-bottom-color: var(--zen-border-dark, #374151);
    }

    .zen-scheduler-collab-avatar {
        background: var(--zen-bg-dark, #111827);
    }
}

/* Hours, times and date numbers speak the data voice: mono + tabular-nums. */
.zen-scheduler-timegrid__time-label,
.zen-scheduler-timegrid__slot-label,
.zen-scheduler-timegrid__day-number,
.zen-scheduler-event__time,
.zen-scheduler-month__day-number,
.zen-scheduler-agenda__day-date,
.zen-scheduler-agenda__event-time,
.zen-scheduler-timeline__time-header {
    font-family: var(--zen-font-family-mono);
    font-variant-numeric: tabular-nums;
}

/* Reduced motion — decorative presence pulse off; event hover lift instant. */
@media (prefers-reduced-motion: reduce) {
    .zen-scheduler-collab-avatar--editing {
        animation: none;
    }
    .zen-scheduler-event {
        transition-duration: 0.01ms;
    }
}

} /* @layer zenith-components */