/*
 * datepicker.css — Custom Datepicker
 * Progressive Enhancement für <input type="date">. Eigenes UI statt OS-Picker,
 * konsistenter Look in Public + Admin. Variablen mit Fallbacks für beide
 * Design-Systeme.
 */

.datepicker {
    --dp-accent:       var(--accent, var(--color-primary, #C4784A));
    --dp-accent-hover: var(--accent-hover, var(--color-primary-hover, #D48858));
    --dp-accent-ink:   var(--ink-on-accent, #ffffff);
    --dp-surface:      var(--surface-raised, var(--card-bg, #ffffff));
    --dp-surface-mute: var(--surface-sunken, rgba(0, 0, 0, 0.04));
    --dp-ink:          var(--ink, var(--text-color, #1A1714));
    --dp-ink-muted:    var(--ink-muted, var(--text-muted, #6B5E54));
    --dp-line:         var(--line, var(--border-color, #E6DFD2));
    --dp-line-strong:  var(--line-strong, #CFC5B2);
    --dp-radius:       var(--radius-md, 0.875rem);
    --dp-radius-sm:    var(--radius-sm, 0.5rem);
    --dp-shadow:       var(--shadow-xl, 0 12px 32px rgba(0, 0, 0, 0.18));
    --dp-motion:       var(--motion-base, 220ms);
    --dp-ease:         var(--ease-emphasized, cubic-bezier(0.16, 1, 0.3, 1));

    /* display:contents → Wrapper hat keine eigene Layout-Box. So bleibt der
       Trigger-Button im selben Flex/Grid-Slot wie das Original-Input und alle
       Selektoren wie `.parent > .input-class` matchen weiterhin. */
    display: contents;
}

.datepicker__native {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    opacity: 0 !important;
    pointer-events: none !important;
    overflow: hidden !important;
    clip: rect(0 0 0 0) !important;
    clip-path: inset(50%) !important;
    white-space: nowrap !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
}

.datepicker__trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    cursor: pointer;
    text-align: left;
    font: inherit;
    font-family: inherit;
    line-height: inherit;
    appearance: none;
}

/* Fallback-Look (0 Spezifität via :where) — wenn das Original-Input keine
   Klassen hatte (z.B. Admin: <input type="date"> ohne Klasse). Bestehende
   Form-Klassen wie .form-field__control überschreiben das problemlos. */
:where(.datepicker__trigger) {
    min-height: 2.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--dp-surface, transparent);
    color: var(--dp-ink, inherit);
    border: 1px solid var(--dp-line);
    border-radius: var(--dp-radius-sm);
}

.datepicker__trigger:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

.datepicker__display {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: inherit;
}

.datepicker__display[data-empty="true"]::before {
    content: attr(data-empty-text);
    color: var(--dp-ink-muted);
    opacity: 0.75;
}

.datepicker__icon {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    color: currentColor;
    opacity: 0.65;
    transition: opacity var(--dp-motion) var(--dp-ease);
}

.datepicker__trigger:hover .datepicker__icon,
.datepicker__trigger.is-open .datepicker__icon {
    opacity: 1;
}

/* ============================================================
   Popover / Mobile-Sheet
   ============================================================ */
.datepicker-popover {
    position: fixed;
    z-index: 10000;
    top: 0;
    left: 0;
    width: 19rem;
    max-width: calc(100vw - 1rem);
    background: var(--dp-surface, #ffffff);
    color: var(--dp-ink, #1A1714);
    border: 1px solid var(--dp-line, #E6DFD2);
    border-radius: var(--dp-radius, 0.875rem);
    box-shadow: var(--dp-shadow, 0 12px 32px rgba(0, 0, 0, 0.2));
    padding: 0.875rem;
    font-family: var(--font-body, system-ui, -apple-system, sans-serif);
    font-size: 0.9rem;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity var(--dp-motion, 220ms) var(--dp-ease, ease),
                transform var(--dp-motion, 220ms) var(--dp-ease, ease);
    pointer-events: none;
}

.datepicker-popover.is-visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.datepicker-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 9999;
    opacity: 0;
    transition: opacity var(--dp-motion, 220ms) ease;
    pointer-events: none;
}

.datepicker-backdrop.is-visible {
    opacity: 1;
    pointer-events: auto;
}

/* === Header === */
.datepicker__header {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
}

.datepicker__title {
    flex: 1 1 auto;
    text-align: center;
    font-weight: 600;
    font-size: 0.95rem;
    color: inherit;
    background: none;
    border: none;
    padding: 0.4rem 0.5rem;
    cursor: pointer;
    border-radius: var(--dp-radius-sm, 0.5rem);
    transition: background 120ms ease;
}

.datepicker__title:hover {
    background: var(--dp-surface-mute, rgba(0, 0, 0, 0.05));
}

.datepicker__nav {
    width: 34px;
    height: 34px;
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--dp-radius-sm, 0.5rem);
    color: inherit;
    cursor: pointer;
    transition: background 120ms ease;
}

.datepicker__nav:hover:not(:disabled) {
    background: var(--dp-surface-mute, rgba(0, 0, 0, 0.05));
}

.datepicker__nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.datepicker__nav svg { width: 16px; height: 16px; }

/* === Weekday Row === */
.datepicker__weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    margin-bottom: 4px;
}

.datepicker__weekday {
    text-align: center;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--dp-ink-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.4rem 0;
}

/* === Day Grid === */
.datepicker__grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
}

.datepicker__day {
    aspect-ratio: 1 / 1;
    min-height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 500;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--dp-radius-sm, 0.5rem);
    color: inherit;
    cursor: pointer;
    transition: background 120ms ease, color 120ms ease, transform 100ms ease, border-color 120ms ease;
    user-select: none;
}

.datepicker__day:hover:not(:disabled):not(.is-selected) {
    background: var(--dp-surface-mute, rgba(0, 0, 0, 0.06));
}

.datepicker__day:active:not(:disabled) {
    transform: scale(0.94);
}

.datepicker__day.is-today:not(.is-selected) {
    border-color: var(--dp-accent);
    color: var(--dp-accent);
    font-weight: 700;
}

.datepicker__day.is-selected {
    background: var(--dp-accent);
    color: var(--dp-accent-ink);
    border-color: var(--dp-accent);
}

.datepicker__day.is-other-month {
    opacity: 0.32;
}

.datepicker__day:disabled {
    color: var(--dp-line-strong);
    cursor: not-allowed;
    opacity: 0.5;
}

/* === Year / Month Picker === */
.datepicker__year-grid,
.datepicker__month-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    padding: 0.25rem 0;
}

.datepicker__year,
.datepicker__month {
    padding: 0.7rem 0.5rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--dp-radius-sm, 0.5rem);
    color: inherit;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background 120ms ease, border-color 120ms ease;
}

.datepicker__year:hover:not(:disabled),
.datepicker__month:hover:not(:disabled) {
    background: var(--dp-surface-mute, rgba(0, 0, 0, 0.06));
}

.datepicker__year.is-selected,
.datepicker__month.is-selected {
    background: var(--dp-accent);
    color: var(--dp-accent-ink);
    border-color: var(--dp-accent);
}

.datepicker__year:disabled,
.datepicker__month:disabled {
    color: var(--dp-line-strong);
    cursor: not-allowed;
    opacity: 0.5;
}

/* === Footer === */
.datepicker__footer {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
    margin-top: 0.6rem;
    padding-top: 0.6rem;
    border-top: 1px solid var(--dp-line);
}

.datepicker__btn {
    flex: 1 1 auto;
    background: transparent;
    border: 1px solid var(--dp-line);
    border-radius: var(--dp-radius-sm, 0.5rem);
    color: inherit;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    font-family: inherit;
    transition: background 120ms ease, border-color 120ms ease;
}

.datepicker__btn:hover {
    background: var(--dp-surface-mute, rgba(0, 0, 0, 0.05));
    border-color: var(--dp-line-strong);
}

/* ============================================================
   Mobile-Sheet (≤520px) — Bottom-Sheet mit Slide-in
   ============================================================ */
@media (max-width: 520px) {
    .datepicker-popover {
        top: auto !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0;
        width: 100%;
        max-width: 100%;
        border-radius: var(--radius-lg, 1.25rem) var(--radius-lg, 1.25rem) 0 0;
        padding: 1rem 1rem 1.25rem;
        max-height: 90vh;
        overflow: auto;
        transform: translateY(100%);
    }
    .datepicker-popover.is-visible {
        transform: translateY(0);
    }
    .datepicker__day {
        min-height: 40px;
        font-size: 0.95rem;
    }
}