/* =========================================
   カスタムセレクト（モデル選択用ドロップダウン）
   ========================================= */
.custom-select {
    position: relative;
    width: 100%;
}

.custom-select-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.25rem 0.5rem;
    font-size: .875rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text-color);
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out;
    min-height: 31px;
}

.custom-select-toggle:hover {
    border-color: var(--primary-color);
}

.custom-select-toggle:focus {
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.custom-select-toggle[disabled] {
    opacity: .65;
    cursor: not-allowed;
    pointer-events: none;
    background: var(--input-bg);
    border-color: var(--input-border);
}

.custom-select-toggle .bi-chevron-down {
    transition: transform 0.2s;
    font-size: .75rem;
    color: #6c757d;
}

.custom-select.open .custom-select-toggle .bi-chevron-down {
    transform: rotate(180deg);
}

.custom-select-menu {
    position: fixed;
    z-index: 9999;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-4px);
    transition: visibility 0s linear .12s, opacity .12s ease, transform .12s ease;
    min-width: 180px;
    padding: 4px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: calc(var(--radius) + 2px);
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
    max-height: 280px;
    overflow-y: auto;
}

.custom-select.open .custom-select-menu {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0s;
}

.custom-select-option {
    display: block;
    width: 100%;
    padding: 6px 10px;
    font-size: .875rem;
    line-height: 1.5;
    color: var(--text-color);
    background: transparent;
    border: none;
    border-radius: var(--radius);
    text-align: left;
    cursor: pointer;
    transition: background .12s;
}

.model-deprecation-info {
    color: var(--text-muted, #8a929a);
    font-size: .78em;
    margin-left: .2em;
    vertical-align: .04em;
    cursor: help;
}

.custom-select-option:hover {
    background: rgba(13, 110, 253, 0.08);
}

.custom-select-option:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
}