/* ==========================================================================
   라이브 퀵 서치 HUD 모드 (/terms/hud)
   AMOLED True Black 전용 스타일. 어두운 관람 환경에서의 고대비 가독성과
   모바일 한 손 조작(스티키 헤더/검색/칩)을 목표로 한다.
   공통 style.css 뒤에 로드되어 배경/타이포를 덮어쓴다.
   ========================================================================== */

#page-hud {
    /* 글자 크기 조절 버튼이 이 변수를 단계적으로 변경한다 */
    --hud-font-scale: 1;

    --hud-bg: #000000;          /* AMOLED True Black (픽셀 소등) */
    --hud-surface: #0b0b0b;
    --hud-border: #262626;
    --hud-text: #ffffff;
    --hud-text-dim: #b3b3b3;
    --hud-accent: #e10600;      /* F1 레드 */
    --hud-accent-soft: rgba(225, 6, 0, 0.14);
    --hud-tip: #38bdf8;         /* 캐스터 멘트 해석 강조 */

    background-color: var(--hud-bg);
    color: var(--hud-text);
    min-height: 100vh;
    padding: 0;
    margin: 0;
    -webkit-text-size-adjust: 100%;
}

/* ── 상단 헤더 ─────────────────────────────────────────────── */
#page-hud .hud-header {
    position: sticky;
    top: 0;
    z-index: 30;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0.75rem;
    padding-top: max(0.6rem, env(safe-area-inset-top));
    background-color: var(--hud-bg);
    border-bottom: 1px solid var(--hud-border);
}

#page-hud .hud-back {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1.4rem;
    color: var(--hud-text);
    text-decoration: none;
    border: 1px solid var(--hud-border);
    border-radius: 0.5rem;
}

#page-hud .hud-back:active {
    background-color: #1a1a1a;
}

#page-hud .hud-title {
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin: 0;
    font-size: calc(1rem * var(--hud-font-scale));
    font-weight: 800;
    letter-spacing: 0.08em;
}

#page-hud .hud-live-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background-color: var(--hud-accent);
    animation: hud-pulse 1.4s ease-in-out infinite;
}

@keyframes hud-pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.25; }
}

#page-hud .hud-header-actions {
    flex: 0 0 auto;
    display: flex;
    gap: 0.35rem;
}

#page-hud .hud-icon-btn {
    min-height: 2.5rem;
    padding: 0 0.6rem;
    font-size: calc(0.8rem * var(--hud-font-scale));
    font-weight: 600;
    color: var(--hud-text-dim);
    background-color: transparent;
    border: 1px solid var(--hud-border);
    border-radius: 0.5rem;
    cursor: pointer;
    white-space: nowrap;
}

#page-hud .hud-icon-btn:active {
    background-color: #1a1a1a;
}

/* 언어 토글(a 태그)도 버튼과 동일한 높이/정렬을 갖도록 보정 */
#page-hud .hud-lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    text-decoration: none;
    letter-spacing: 0.05em;
}

/* 화면 유지 ON 상태 */
#page-hud .hud-icon-btn.is-active {
    color: var(--hud-text);
    background-color: var(--hud-accent-soft);
    border-color: var(--hud-accent);
}

#page-hud .hud-icon-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ── 검색 + 핫 키워드 (스티키) ────────────────────────────── */
#page-hud .hud-sticky-search {
    position: sticky;
    top: 3.7rem;
    z-index: 20;
    padding: 0.6rem 0.75rem 0.5rem;
    background-color: var(--hud-bg);
    border-bottom: 1px solid var(--hud-border);
}

#page-hud .hud-search {
    position: relative;
}

#page-hud .hud-search-input {
    width: 100%;
    padding: 0.9rem 2.75rem 0.9rem 1rem;
    font-size: calc(1.05rem * var(--hud-font-scale));
    font-weight: 600;
    color: var(--hud-text);
    background-color: var(--hud-surface);
    border: 1px solid var(--hud-border);
    border-radius: 0.6rem;
    appearance: none;
}

#page-hud .hud-search-input::placeholder {
    color: #6b6b6b;
    font-weight: 400;
}

#page-hud .hud-search-input:focus {
    outline: none;
    border-color: var(--hud-accent);
    box-shadow: 0 0 0 2px var(--hud-accent-soft);
}

/* iOS 기본 검색 취소 버튼 숨김 (자체 클리어 버튼 사용) */
#page-hud .hud-search-input::-webkit-search-cancel-button {
    display: none;
}

#page-hud .hud-clear-btn {
    position: absolute;
    top: 50%;
    right: 0.4rem;
    transform: translateY(-50%);
    width: 2.1rem;
    height: 2.1rem;
    font-size: 1.3rem;
    line-height: 1;
    color: var(--hud-text-dim);
    background-color: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
}

#page-hud .hud-clear-btn:active {
    background-color: #1f1f1f;
}

#page-hud .hud-hot-bar {
    display: flex;
    gap: 0.4rem;
    margin-top: 0.55rem;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}

#page-hud .hud-hot-bar::-webkit-scrollbar {
    display: none;
}

#page-hud .hud-chip {
    flex: 0 0 auto;
    padding: 0.45rem 0.75rem;
    font-size: calc(0.85rem * var(--hud-font-scale));
    font-weight: 600;
    color: var(--hud-text-dim);
    background-color: var(--hud-surface);
    border: 1px solid var(--hud-border);
    border-radius: 999px;
    cursor: pointer;
    white-space: nowrap;
}

#page-hud .hud-chip:active,
#page-hud .hud-chip.is-active {
    color: var(--hud-text);
    background-color: var(--hud-accent-soft);
    border-color: var(--hud-accent);
}

/* ── 결과 영역 ─────────────────────────────────────────────── */
#page-hud .hud-result {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    padding: 0.75rem 0.75rem 3rem;
    padding-bottom: max(3rem, env(safe-area-inset-bottom));
}

#page-hud .hud-hint,
#page-hud .hud-empty {
    margin: 2rem 0;
    font-size: calc(0.95rem * var(--hud-font-scale));
    color: var(--hud-text-dim);
    text-align: center;
    line-height: 1.6;
}

#page-hud .hud-card {
    padding: 0.9rem 1rem;
    background-color: var(--hud-surface);
    border: 1px solid var(--hud-border);
    border-left: 3px solid var(--hud-accent);
    border-radius: 0.6rem;
}

#page-hud .hud-card-cat {
    display: inline-block;
    margin-bottom: 0.35rem;
    font-size: calc(0.72rem * var(--hud-font-scale));
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--hud-accent);
}

#page-hud .hud-card-title {
    margin: 0;
    font-size: calc(1.25rem * var(--hud-font-scale));
    font-weight: 800;
    line-height: 1.25;
    color: var(--hud-text);
}

#page-hud .hud-card-en {
    margin: 0.1rem 0 0;
    font-size: calc(0.85rem * var(--hud-font-scale));
    color: var(--hud-text-dim);
}

#page-hud .hud-block {
    margin-top: 0.7rem;
}

#page-hud .hud-block-label {
    display: inline-block;
    margin-bottom: 0.25rem;
    padding: 0.15rem 0.45rem;
    font-size: calc(0.7rem * var(--hud-font-scale));
    font-weight: 700;
    border-radius: 0.25rem;
}

#page-hud .hud-quick .hud-block-label {
    color: #000000;
    background-color: #fbbf24;
}

#page-hud .hud-tip .hud-block-label {
    color: #000000;
    background-color: var(--hud-tip);
}

#page-hud .hud-block-text {
    margin: 0;
    font-size: calc(1rem * var(--hud-font-scale));
    line-height: 1.55;
    color: var(--hud-text);
}

#page-hud .hud-tip .hud-block-text {
    color: var(--hud-text-dim);
}

#page-hud .hud-card-more {
    display: inline-block;
    margin-top: 0.75rem;
    font-size: calc(0.82rem * var(--hud-font-scale));
    font-weight: 600;
    color: var(--hud-text-dim);
    text-decoration: none;
}

#page-hud .hud-card-more:active {
    color: var(--hud-text);
}

/* ── 가로 모드(랜드스케이프) 최적화 ─────────────────────────── */
@media (orientation: landscape) and (max-height: 520px) {
    #page-hud .hud-header {
        padding-top: 0.4rem;
        padding-bottom: 0.4rem;
    }

    #page-hud .hud-sticky-search {
        top: 3.2rem;
    }

    #page-hud .hud-search-input {
        padding-top: 0.65rem;
        padding-bottom: 0.65rem;
    }

    /* 세로 공간이 부족하므로 결과 카드를 2열로 배치 */
    #page-hud .hud-result {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* ── 태블릿/데스크톱: 중앙 정렬 컨테이너 ───────────────────── */
@media (min-width: 768px) {
    #page-hud .hud-header,
    #page-hud .hud-sticky-search,
    #page-hud .hud-result {
        max-width: 40rem;
        margin-left: auto;
        margin-right: auto;
    }

    /* 터치 스와이프가 없는 환경이므로 칩을 줄바꿈해 전부 노출한다 (마지막 칩 잘림 방지) */
    #page-hud .hud-hot-bar {
        flex-wrap: wrap;
        row-gap: 0.4rem;
        overflow-x: visible;
    }
}