.picker-field {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.picker-field > label {
    display: block;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--color-text);
}

.picker-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.75rem 0.9rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--theme-surface, #fff);
    font: inherit;
    color: var(--color-text);
    cursor: pointer;
    text-align: left;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.picker-trigger:hover {
    border-color: color-mix(in srgb, var(--theme-accent, #2563eb) 35%, var(--color-border));
}

.picker-trigger:focus-visible {
    outline: none;
    border-color: var(--theme-accent, #2563eb);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--theme-accent, #2563eb) 18%, transparent);
}

.picker-field.is-open .picker-trigger {
    border-color: var(--theme-accent, #2563eb);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--theme-accent, #2563eb) 18%, transparent);
}

.picker-trigger-text {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.picker-field:not(.has-value) .picker-trigger-text {
    color: var(--color-muted);
}

.picker-trigger-icon {
    display: inline-flex;
    color: var(--theme-accent, #2563eb);
    flex-shrink: 0;
}

.picker-popover {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 0;
    z-index: 40;
    width: min(100%, 320px);
    padding: 0.85rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--theme-surface, #fff);
    box-shadow: var(--shadow-lg);
}

.picker-popover.is-flipped {
    top: auto;
    bottom: calc(100% + 0.35rem);
}

.picker-popover[hidden] {
    display: none !important;
}

.picker-cal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.picker-cal-title {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.picker-cal-nav {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--theme-surface, #fff);
    color: var(--color-text);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.picker-cal-nav:hover {
    background: var(--color-bg);
    border-color: color-mix(in srgb, var(--theme-accent, #2563eb) 35%, var(--color-border));
}

.picker-cal-nav:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--theme-accent, #2563eb) 18%, transparent);
}

.picker-cal-weekdays,
.picker-cal-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.25rem;
}

.picker-cal-weekdays {
    margin-bottom: 0.35rem;
}

.picker-cal-weekday {
    text-align: center;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-muted);
    padding: 0.15rem 0;
}

.picker-cal-day,
.picker-cal-empty {
    aspect-ratio: 1;
    min-height: 2.1rem;
}

.picker-cal-empty {
    visibility: hidden;
}

.picker-cal-day {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 8px;
    background: transparent;
    font: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    transition: background 0.12s, color 0.12s;
}

.picker-cal-day:hover:not(:disabled) {
    background: color-mix(in srgb, var(--theme-accent, #2563eb) 12%, #fff);
}

.picker-cal-day:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--theme-accent, #2563eb) 35%, transparent);
}

.picker-cal-day.is-today:not(.is-selected) {
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--theme-accent, #2563eb) 45%, transparent);
}

.picker-cal-day.is-selected {
    background: var(--theme-accent-button, var(--theme-accent, #2563eb));
    color: var(--theme-on-primary, #fff);
}

.picker-cal-day:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.picker-time-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.35rem;
    max-height: 240px;
    overflow: auto;
}

.picker-time-slot {
    padding: 0.55rem 0.45rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--theme-surface, #fff);
    font: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.picker-time-slot:hover {
    border-color: color-mix(in srgb, var(--theme-accent, #2563eb) 35%, var(--color-border));
    background: color-mix(in srgb, var(--theme-accent, #2563eb) 8%, #fff);
}

.picker-time-slot.is-selected {
    background: var(--theme-accent-button, var(--theme-accent, #2563eb));
    border-color: var(--theme-accent-button, var(--theme-accent, #2563eb));
    color: var(--theme-on-primary, #fff);
}

.picker-time-clear {
    margin-top: 0.65rem;
    width: 100%;
    padding: 0.5rem;
    border: none;
    border-radius: 8px;
    background: transparent;
    font: inherit;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-muted);
    cursor: pointer;
}

.picker-time-clear:hover {
    color: var(--color-text);
    background: var(--color-bg);
}

@media (max-width: 640px) {
    .picker-popover {
        position: fixed;
        left: 50%;
        top: 50%;
        bottom: auto;
        transform: translate(-50%, -50%);
        width: min(calc(100dvw - 2rem), 320px);
        max-height: calc(100vh - 2rem);
        overflow: auto;
    }

    .picker-popover.is-flipped {
        top: 50%;
        bottom: auto;
    }
}