/* Date/Time Picker */
.datetime-picker {
    position: fixed;
    background: var(--bg-elevated);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-dropdown);
    min-width: 280px;
    z-index: calc(var(--z-layer-modal) + 6);
    animation: dropdownSlideIn var(--duration-fast) var(--ease-in-out);
}

.datetime-picker-header {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-light);
}

.calendar-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}

.calendar-nav-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--surface-base);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-18);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.calendar-month-year {
    font-size: var(--font-size-14);
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    text-align: center;
}

.datetime-picker-body {
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-3-5);
}

.quick-select-buttons {
    display: flex;
    gap: var(--space-1-5);
    margin-bottom: 4px;
}

.quick-select-btn {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--border-medium);
    background: var(--surface-base);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-12);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.quick-select-btn:hover {
    background: var(--surface-hover);
    border-color: var(--accent-blue);
    color: var(--text-primary);
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--space-1);
    margin-bottom: 4px;
}

.calendar-weekday {
    text-align: center;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-tertiary);
    padding: var(--space-1);
    text-transform: uppercase;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--space-1);
    margin-bottom: 12px;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
    background: var(--surface-base);
    border: 1px solid transparent;
}

.calendar-day:not(.empty):hover {
    background: var(--surface-hover);
    border-color: var(--border-medium);
}

.calendar-day.empty {
    cursor: default;
    background: transparent;
}

.calendar-day.past {
    color: var(--text-tertiary);
    opacity: 0.5;
}

.calendar-day.today {
    border-color: var(--accent-blue);
    font-weight: 600;
}

.calendar-day.selected {
    background: var(--accent-fill);
    color: white;
    font-weight: 600;
}

.calendar-day.selected:hover {
    background: var(--accent-fill-hover);
}

.datetime-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-1-5);
}

.datetime-label {
    font-size: var(--font-size-12);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.datetime-date-input,
.datetime-time-input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    background: var(--surface-base);
    color: var(--text-primary);
    font-size: var(--font-size-14);
    outline: none;
    transition: border-color var(--transition-fast);
    accent-color: var(--accent-blue);
}

.datetime-date-input:focus,
.datetime-time-input:focus {
    border-color: var(--accent-blue);
}

/* Custom time picker (replaces native <input type="time"> for brand consistency) */

.custom-time-input {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    background: var(--surface-base);
    cursor: pointer;
    transition: border-color var(--transition-fast);
    position: relative;
}

.custom-time-input:hover {
    border-color: var(--accent-blue);
}

.custom-time-input:focus {
    border-color: var(--accent-blue);
    outline: none;
}

.custom-time-input:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--focus-outline-offset);
}

.custom-time-value {
    flex: 1;
    font-size: var(--font-size-14);
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.custom-time-value.is-placeholder {
    color: var(--text-tertiary);
}

.custom-time-clear {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: var(--font-size-16);
    cursor: pointer;
    padding: 4px 6px;
    margin: -4px -2px;
    line-height: 1;
    border-radius: var(--radius-sm);
}

.custom-time-clear:hover {
    color: var(--text-secondary);
    background: var(--surface-hover);
}

.custom-time-icon {
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.custom-time-dropdown {
    display: flex;
    gap: 1px;
    background: var(--border-light);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-dropdown);
    margin-top: var(--space-1);
    overflow: hidden;
    z-index: calc(var(--z-layer-modal) + 7);
    animation: dropdownSlideIn var(--duration-fast) var(--ease-in-out);
}

@media (prefers-reduced-motion: reduce) {
    .custom-time-dropdown {
        animation: none;
    }
}

.time-col {
    max-height: 200px;
    overflow-y: auto;
    background: var(--bg-elevated);
    min-width: 56px;
    scrollbar-width: thin;
}

.time-col::-webkit-scrollbar {
    width: 4px;
}

.time-col::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: var(--radius-sm);
}

.time-col-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-tertiary);
    text-align: center;
    padding: 4px 0 2px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    position: sticky;
    top: 0;
    background: var(--bg-elevated);
    z-index: 1;
}

.time-option {
    padding: 10px 12px;
    text-align: center;
    font-size: var(--font-size-14);
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.time-option:hover {
    background: var(--surface-hover);
}

.time-option.selected {
    background: var(--accent-fill);
    color: white;
    font-weight: 600;
}

.time-option.selected:hover {
    background: var(--accent-fill-hover);
}

.datetime-picker-footer {
    padding: var(--space-3) var(--space-4);
    border-top: 1px solid var(--border-light);
    display: flex;
    gap: var(--space-2);
    justify-content: flex-end;
}

.datetime-btn {
    padding: var(--space-1-5) var(--space-3-5);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
}

.datetime-btn-cancel {
    background: transparent;
    color: var(--text-secondary);
}

.datetime-btn-cancel:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
}

.datetime-btn-confirm {
    background: var(--accent-fill);
    color: white;
}

.datetime-btn-confirm:hover {
    background: var(--accent-fill-hover);
}

.datetime-btn-confirm:active {
    transform: scale(0.98);
}


/* Snackbar Notifications (bottom center, subtle) */
.snackbar-container {
    position: fixed;
    bottom: 32px;
    left: 50%;
    /* --snackbar-lift is set by js/utils/snackbar-placement.js to keep the
       toast clear of bottom-anchored sheets (which sit at bottom: 24px).
       Without it a toast covers a sheet's action row — and since .snackbar
       is pointer-events:auto at z-index 99999, it also swallows the clicks
       aimed at the button underneath. */
    transform: translate(-50%, calc(-1 * var(--snackbar-lift, 0px)));
    transition: transform var(--duration-slow) var(--ease-in-out);
    z-index: calc(var(--z-layer-top) - 1);
    pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
    .snackbar-container { transition: none; }
    .snackbar { animation: none; }
}

.snackbar {
    background: #ffffff;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-2);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-2xl);
    font-family: var(--font-family);
    font-size: var(--font-size-14);
    line-height: 1.4;
    pointer-events: auto;
    white-space: nowrap;
    animation: snackbarSlideUp var(--duration-slow) var(--ease-in-out);
    display: inline-block;
}

.snackbar.is-loading {
    /* Loading variant: snackbar pulses subtly to signal in-progress state.
       The actual spinner is the .snackbar-spinner element prepended to the
       snackbar by showSnackbar() when options.loading is set. */
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.snackbar-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid var(--border-light);
    border-top-color: var(--accent-blue);
    border-radius: var(--radius-circle);
    animation: snackbarSpinnerRotate 0.8s linear infinite;
    flex-shrink: 0;
}

@keyframes snackbarSpinnerRotate {
    to { transform: rotate(360deg); }
}

.snackbar-text {
    color: var(--text-secondary);
}

.snackbar-accent {
    color: var(--accent-blue);
    font-weight: 500;
}

.snackbar-action-btn {
    margin-left: 10px;
    padding: 2px 8px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--accent-blue);
    background: none;
    border: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
}

.snackbar-action-btn:hover {
    background: var(--accent-blue-bg, rgba(59, 130, 246, 0.1));
}