/* ================================================================
   Search Button Loader — изолированные стили
   Применяется только к кнопке с классом .search-btn
   ================================================================ */

.search-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 300px;
    height: 56px;
    padding: 0 26px;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    overflow: hidden;
    transition: transform .12s ease, box-shadow .2s ease;
    box-shadow: 0 6px 20px rgba(16, 185, 129, .35);
    font-family: inherit;
}

.search-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 10px 26px rgba(16, 185, 129, .35);
}

.search-btn:disabled {
    cursor: wait;
}

/* Лейбл — то, что видно до клика */
.search-btn .search-btn__label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: opacity .2s ease, transform .2s ease;
}

.search-btn.is-loading .search-btn__label {
    opacity: 0;
    transform: translateY(-4px);
}

/* Лоадер — появляется во время загрузки */
.search-btn .search-btn__loader {
    position: absolute;
    inset: 0;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #fff;
}

.search-btn.is-loading .search-btn__loader {
    display: flex;
}

/* Текст */
.search-btn .search-btn__text {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: .2px;
    white-space: nowrap;
}

/* Бегущая полоска */
.search-btn .search-btn__bar-track {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, .18);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.search-btn .search-btn__bar-fill {
    position: absolute;
    left: -40%;
    width: 40%;
    height: 100%;
    background: linear-gradient(90deg, transparent, #fff, transparent);
    animation: searchBarSlide 1.1s infinite linear;
}

@keyframes searchBarSlide {
    0%   { left: -40%; }
    100% { left: 100%; }
}