/* Layer 0 — Mobile sticky phone bar (DRM Policy Section 2).
   z-index 900: 헤더(1000)·top-bar(999)·모바일메뉴(2000)·popup overlay(9999)와 충돌 없음. */

.mobile-phone-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--gray-800, #1f1f1f);
    color: var(--color-white);
    text-align: center;
    padding: 12px 16px;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.3px;
    text-decoration: none;
    z-index: 900;
    box-shadow: 0 -2px 8px rgb(0 0 0 / 0.15);
    transition: transform 0.15s ease;
}

.mobile-phone-bar:hover,
.mobile-phone-bar:focus { color: var(--color-white); text-decoration: none; }
.mobile-phone-bar:active { transform: translateY(1px); }
.mobile-phone-bar i { margin-right: 8px; }

@media (max-width: 768px) {
    .mobile-phone-bar { display: block; }

    /* 푸터 콘텐츠가 sticky bar에 가려지지 않게 body에 패딩 추가 */
    body { padding-bottom: 50px; }
}