/**
 * @module custom-footer styles | @used-by inc/custom-footer.php
 * @deps dark-mode 전역 CSS 변수 (var(--x, fallback) 형태로 미주입 시에도 폴백 렌더링)
 */

.vault-footer {
    border-top: 0.5px solid var(--border-divider, rgba(128,128,128,0.18));
    padding: 3rem 2rem 2rem;
    font-family: -apple-system, 'Apple SD Gothic Neo', sans-serif;
    background: var(--bg-main, transparent);
    color: var(--text-soft, #666);
}

.vault-footer-top {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

/* ── 로고 이스터에그 버튼 ── */
.vault-footer-logo-link {
    display: block;
    width: 280px;
    text-decoration: none;
    color: inherit;
    padding: 1px 14px;
    margin: -5px -14px;
    border-radius: 10px;
    border: 1px solid transparent;
    background: transparent;
    box-shadow: none;
    transform: translateY(0);
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    cursor: pointer;
}
.vault-footer-logo-link:hover {
    background: var(--bg-panel, rgba(128,128,128,0.06));
    border-color: var(--border-soft, rgba(128,128,128,0.25));
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.15),
        0 4px 10px rgba(0,0,0,0.15),
        0 1px 3px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}
.vault-footer-logo-link .vault-footer-brand-name {
    margin-bottom: 0;
}
.vault-footer-logo-link:active {
    transform: translateY(1px);
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.08),
        0 2px 5px rgba(0,0,0,0.12);
}

/* ── 브랜드 심볼 & 이름 ── */
.vault-footer-brand-symbol {
    font-size: 11px;
    letter-spacing: 0.18em;
    color: var(--text-muted, #888);
    margin-bottom: 10px;
}
.vault-footer-brand-name {
    font-size: 22px;
    font-weight: 800;
    font-family: 'Rockstar-ExtraBold', 'Pretendard', -apple-system, sans-serif;
    color: var(--text-main, #111);
    margin-bottom: 14px;
    line-height: 1.2;
}
.vault-footer-wip-link {
    display: inline-block;
    text-decoration: none !important;
    color: inherit;
    transition: opacity 0.2s ease;
}
.vault-footer-wip-link:hover {
    opacity: 0.75;
}
.vault-footer-brand-status {
    font-size: 22px;
    font-weight: 900;
    color: var(--text-main, #111);
    margin-top: 0.5rem;
    display: inline-block;
    animation: status-wobble 2.2s ease-in-out infinite;
    transform-origin: left center;
}
@keyframes status-wobble {
    0%   { transform: rotate(0deg)    skewX(0deg);   }
    15%  { transform: rotate(-2deg)   skewX(-2deg);  }
    30%  { transform: rotate(2.5deg)  skewX(1.5deg); }
    45%  { transform: rotate(-1.5deg) skewX(-1deg);  }
    60%  { transform: rotate(1deg)    skewX(0.5deg); }
    75%  { transform: rotate(-0.5deg) skewX(0deg);   }
    100% { transform: rotate(0deg)    skewX(0deg);   }
}
.vault-footer-brand-desc-sub {
    font-size: 13px;
    line-height: 1.75;
    max-width: 280px;
    animation: text-hue-shift 6s ease-in-out infinite;
}
@keyframes text-hue-shift {
    0%   { color: var(--text-muted,  #888); }
    25%  { color: var(--link,        #aaa); }
    50%  { color: var(--text-soft,   #bbb); }
    75%  { color: var(--meta-date,   #999); }
    100% { color: var(--text-muted,  #888); }
}
.vault-footer-brand-desc {
    font-size: 13px;
    color: var(--text-soft, #666);
    line-height: 1.75;
    max-width: 280px;
}
.vault-footer-col-title {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.12em;
    color: var(--text-muted, #aaa);
    margin-bottom: 16px;
    text-transform: uppercase;
}

/* ── 테마 프리셋 표시 — WIP 링크 톤에 맞춘 담백한 텍스트형 ── */
.vault-footer-theme-indicator {
    margin-top: 24px;
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 12px;
}
.vault-footer-preset-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--figcaption-marker-bg, var(--link, #888));
    flex-shrink: 0;
    box-shadow: 0 0 5px var(--figcaption-marker-bg, var(--link, #888));
    animation: dot-pulse 2.5s ease-in-out infinite;
}
@keyframes dot-pulse {
    0%, 100% { opacity: 1;    transform: scale(1);    }
    50%       { opacity: 0.5; transform: scale(0.75); }
}
.vault-footer-preset-label {
    color: var(--text-muted, #999);
    font-weight: 400;
}
.vault-footer-preset-sep {
    color: var(--text-muted, #777);
    font-weight: 300;
}
.vault-footer-preset-name {
    color: var(--text-soft, #bbb);
    font-weight: 600;
}

/* ── PAGES 영역 (글로우 카드 & 모션 인디케이터) ── */
.vault-footer-nav-item {
    display: block;
    margin-bottom: 6px;
    text-decoration: none;
    padding: 10px 16px;
    margin-left: -16px; /* 텍스트 시작점을 기존과 동일하게 유지하기 위한 음수 여백 */
    border-radius: 10px;
    position: relative;
    transition: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
    overflow: hidden;
}
.vault-footer-nav-item:hover {
    background: var(--bg-hover, rgba(128,128,128,0.05));
    transform: translateX(4px); /* 우측으로 살짝 이동하는 모션 */
}
.vault-footer-nav-item::after {
    content: '→';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%) translateX(-15px);
    opacity: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--link-entry, var(--text-main, #111));
    transition: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
}
.vault-footer-nav-item:hover::after {
    opacity: 1;
    transform: translateY(-50%) translateX(0); /* 화살표가 미끄러지듯 등장 */
}
.vault-footer-nav-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-main, #111);
    margin-bottom: 2px;
    transition: color 0.3s ease;
}
.vault-footer-nav-item:hover .vault-footer-nav-label {
    color: var(--link-entry, var(--text-main, #111));
    text-shadow: 0 0 8px rgba(255,255,255,0.1); /* 은은한 텍스트 발광 */
}
.vault-footer-nav-desc {
    font-size: 12px;
    color: var(--text-muted, #aaa);
    line-height: 1.55;
    transition: opacity 0.3s ease;
    opacity: 0.8;
}
.vault-footer-nav-item:hover .vault-footer-nav-desc {
    opacity: 1;
}

/* 신규 항목 NEW 배지 */
.vault-footer-nav-new-badge {
    display: inline-block;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: #fff;
    background: var(--point-color, #C21807);
    border-radius: 4px;
    padding: 1px 5px;
    margin-left: 6px;
    vertical-align: middle;
    transform: translateY(-1px);
}

/* ── 3번째 컬럼(구 카테고리 자리) — 상/하 2단 분할 ── */
.vault-footer-col3 {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}
.vault-footer-col3-text {
    font-size: 13px;
    line-height: 1.75;
    color: var(--text-soft, #999);
    margin: 0;
}
.vault-footer-col3-text a {
    color: var(--link-entry, var(--text-main, #111));
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: opacity 0.2s ease;
}
.vault-footer-col3-text a:hover {
    opacity: 0.75;
}

.vault-footer-soon-tag {
    display: inline-block;
    font-size: 9px;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--text-muted, #888);
    border: 1px solid var(--border-soft, rgba(128,128,128,0.3));
    border-radius: 4px;
    padding: 1px 5px;
    margin-left: 6px;
    vertical-align: middle;
    text-transform: none;
}
.vault-footer-newsletter-placeholder {
    opacity: 0.55;
}
.vault-footer-newsletter-form {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}
.vault-footer-newsletter-form input {
    flex: 1;
    min-width: 0;
    font-size: 12px;
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid var(--border-soft, rgba(128,128,128,0.3));
    background: var(--bg-panel, transparent);
    color: var(--text-soft, #999);
}
.vault-footer-newsletter-form button {
    font-size: 12px;
    padding: 8px 14px;
    border-radius: 8px;
    border: 1px solid var(--border-soft, rgba(128,128,128,0.3));
    background: transparent;
    color: var(--text-muted, #888);
    cursor: not-allowed;
}

/* ── 하단 카피라이트 및 배지 ── */
.vault-footer-divider {
    border: none;
    border-top: 0.5px solid var(--border-divider, rgba(128,128,128,0.18));
    margin: 0 auto 1.5rem;
    max-width: 1200px;
}
.vault-footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    max-width: 1200px;
    margin: 0 auto;
}
.vault-footer-copy {
    font-size: 12px;
    color: var(--text-muted, #aaa);
}
.vault-footer-ver {
    background: linear-gradient(
        90deg,
        var(--text-muted, #aaa) 0%,
        var(--link-entry, #fff) 45%,
        var(--text-muted, #aaa) 100%
    );
    background-size: 300% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: footer-ver-shine 4s linear infinite;
}
@keyframes footer-ver-shine {
    0%   { background-position: 200% center; }
    100% { background-position: -100% center; }
}
.vault-footer-roman {
    font-size: 12px;
    color: var(--text-muted, #aaa);
    letter-spacing: 0.08em;
}
.vault-footer-dot {
    display: inline-block;
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--text-muted, #aaa);
    margin: 0 7px;
    vertical-align: middle;
    position: relative;
    top: -1px;
}

/* ── 모바일 반응형 ── */
@media (max-width: 768px) {
    .vault-footer-top {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .vault-footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
    .vault-footer-col3 {
        gap: 2rem;
    }
}