/* ─────────────────────────────────────────────
   rhx-select
   Custom-styled select with button trigger, listbox panel,
   and hidden input for form submission.
   ───────────────────────────────────────────── */

/* ── Block ── */
.rhx-select {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    gap: var(--rhx-space-xs);
    width: 100%;
    max-width: 20rem;
    font-family: var(--rhx-font-family);
}

/* ── Label ── */
.rhx-select__label {
    display: block;
    font-size: var(--rhx-font-size-sm);
    font-weight: var(--rhx-font-weight-medium);
    color: var(--rhx-color-text);
    line-height: var(--rhx-line-height-tight);
}

/* ── Trigger button ── */
.rhx-select__trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--rhx-space-sm);
    width: 100%;
    min-height: 2.5rem;
    padding: var(--rhx-space-sm) var(--rhx-space-md);
    background: var(--rhx-color-surface);
    border: var(--rhx-border-width) solid var(--rhx-color-border);
    border-radius: var(--rhx-radius-md);
    color: var(--rhx-color-text);
    font-size: var(--rhx-font-size-base);
    font-family: inherit;
    line-height: var(--rhx-line-height-normal);
    cursor: pointer;
    transition: border-color var(--rhx-transition-fast),
                box-shadow var(--rhx-transition-fast);
    text-align: left;
}

.rhx-select__trigger:hover {
    border-color: var(--rhx-color-border-hover, var(--rhx-color-neutral-400));
}

.rhx-select__trigger:focus-visible {
    outline: 2px solid var(--rhx-color-brand-500);
    outline-offset: 2px;
    border-color: var(--rhx-color-brand-500);
}

.rhx-select__trigger[aria-expanded="true"] {
    border-color: var(--rhx-color-brand-500);
    box-shadow: 0 0 0 1px var(--rhx-color-brand-500);
}

/* ── Value display ── */
.rhx-select__value {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.rhx-select__placeholder {
    color: var(--rhx-color-text-muted);
}

/* ── Arrow icon ── */
.rhx-select__arrow {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    color: var(--rhx-color-text-muted);
    transition: transform var(--rhx-transition-fast);
}

.rhx-select__trigger[aria-expanded="true"] .rhx-select__arrow {
    transform: rotate(180deg);
}

/* ── Clear button ── */
.rhx-select__clear {
    position: absolute;
    right: 2.25rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
    height: 1.25rem;
    padding: 0;
    border: none;
    background: none;
    color: var(--rhx-color-text-muted);
    cursor: pointer;
    border-radius: var(--rhx-radius-sm);
}

.rhx-select__clear:hover {
    color: var(--rhx-color-text);
}

.rhx-select__clear:focus-visible {
    outline: 2px solid var(--rhx-color-brand-500);
    outline-offset: 1px;
}

.rhx-select--has-label .rhx-select__clear {
    top: calc(50% + 0.75rem);
}

/* ── Listbox panel ── */
.rhx-select__listbox {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: var(--rhx-z-dropdown);
    margin-top: var(--rhx-space-xs);
    padding: var(--rhx-space-xs) 0;
    background: var(--rhx-color-surface);
    border: var(--rhx-border-width) solid var(--rhx-color-border);
    border-radius: var(--rhx-radius-md);
    box-shadow: var(--rhx-shadow-lg);
    overflow-y: auto;
}

.rhx-select__listbox:not([hidden]) {
    display: block;
}

/* ── Option ── */
.rhx-select__option {
    display: flex;
    align-items: center;
    padding: var(--rhx-space-sm) var(--rhx-space-md);
    color: var(--rhx-color-text);
    font-size: var(--rhx-font-size-base);
    cursor: pointer;
    transition: background-color var(--rhx-transition-fast);
    user-select: none;
}

.rhx-select__option:hover {
    background-color: var(--rhx-color-neutral-100);
}

.rhx-select__option:focus-visible,
.rhx-select__option[data-rhx-focused] {
    background-color: var(--rhx-color-neutral-100);
    outline: none;
}

.rhx-select__option--selected {
    background-color: var(--rhx-color-brand-50, var(--rhx-color-neutral-50));
    font-weight: var(--rhx-font-weight-medium);
}

.rhx-select__option--selected::after {
    content: "";
    display: inline-block;
    width: 1rem;
    height: 1rem;
    margin-left: auto;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

.rhx-select__option--disabled {
    opacity: 0.5;
    cursor: default;
    pointer-events: none;
}

/* ── Multi-select tags ── */
.rhx-select--multiple .rhx-select__value {
    display: flex;
    flex-wrap: wrap;
    gap: var(--rhx-space-xs);
    white-space: normal;
}

.rhx-select__tag {
    display: inline-flex;
    align-items: center;
    gap: var(--rhx-space-xs);
    padding: 0.125rem var(--rhx-space-sm);
    background: var(--rhx-color-neutral-100);
    border-radius: var(--rhx-radius-sm);
    font-size: var(--rhx-font-size-sm);
    line-height: var(--rhx-line-height-tight);
}

.rhx-select__tag-remove {
    display: flex;
    align-items: center;
    padding: 0;
    border: none;
    background: none;
    color: var(--rhx-color-text-muted);
    cursor: pointer;
    font-size: 0.75rem;
    line-height: 1;
}

.rhx-select__tag-remove:hover {
    color: var(--rhx-color-text);
}

/* ── Hidden inputs container ── */
.rhx-select__values {
    display: none;
}

.rhx-select__hidden {
    display: none;
}

/* ── Filled variant ── */
.rhx-select--filled .rhx-select__trigger {
    background: var(--rhx-color-neutral-100);
    border-color: transparent;
}

.rhx-select--filled .rhx-select__trigger:hover {
    background: var(--rhx-color-neutral-200);
}

.rhx-select--filled .rhx-select__trigger:focus-visible,
.rhx-select--filled .rhx-select__trigger[aria-expanded="true"] {
    background: var(--rhx-color-surface);
    border-color: var(--rhx-color-brand-500);
}

/* ── Size variants ── */
.rhx-select--small .rhx-select__trigger {
    min-height: 2rem;
    padding: var(--rhx-space-xs) var(--rhx-space-sm);
    font-size: var(--rhx-font-size-sm);
}

.rhx-select--small .rhx-select__option {
    padding: var(--rhx-space-xs) var(--rhx-space-sm);
    font-size: var(--rhx-font-size-sm);
}

.rhx-select--large .rhx-select__trigger {
    min-height: 3rem;
    padding: var(--rhx-space-md) var(--rhx-space-lg);
    font-size: var(--rhx-font-size-lg);
}

.rhx-select--large .rhx-select__option {
    padding: var(--rhx-space-md) var(--rhx-space-lg);
    font-size: var(--rhx-font-size-lg);
}

/* ── Disabled ── */
.rhx-select--disabled .rhx-select__trigger {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.rhx-select--disabled .rhx-select__label {
    opacity: 0.5;
}

/* ── Readonly ── */
.rhx-select--readonly .rhx-select__trigger {
    background: var(--rhx-color-neutral-50);
    cursor: default;
    pointer-events: none;
}

/* ── Error ── */
.rhx-select--error .rhx-select__trigger,
.rhx-select[data-rhx-invalid] .rhx-select__trigger {
    border-color: var(--rhx-color-danger-500);
}

.rhx-select--error .rhx-select__trigger:focus-visible,
.rhx-select--error .rhx-select__trigger[aria-expanded="true"],
.rhx-select[data-rhx-invalid] .rhx-select__trigger:focus-visible,
.rhx-select[data-rhx-invalid] .rhx-select__trigger[aria-expanded="true"] {
    border-color: var(--rhx-color-danger-500);
    box-shadow: 0 0 0 1px var(--rhx-color-danger-500);
    outline-color: var(--rhx-color-danger-500);
}

.rhx-select__error {
    font-size: var(--rhx-font-size-sm);
    color: var(--rhx-color-danger-500);
}

/* ── Hint ── */
.rhx-select__hint {
    font-size: var(--rhx-font-size-sm);
    color: var(--rhx-color-text-muted);
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
    .rhx-select__trigger,
    .rhx-select__arrow,
    .rhx-select__option {
        transition: none;
    }
}