/* ============================================
   링크네비 (LinkNavi) - 배너 시스템 스타일
   작성일: 2025-08-19
   ============================================ */

/* ============================================
   1. 배너 섹션
   ============================================ */
.premium-banner-section,
.standard-banner-section {
    margin-bottom: var(--spacing-xl);
}

.premium-banner-section h2,
.standard-banner-section h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.premium-banner-section h2 small,
.standard-banner-section h2 small {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
}

/* ============================================
   2. 프리미엄 배너 그리드
   ============================================ */
.premium-banner-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 기본값 2열 */
    gap: 3px;
    margin-bottom: var(--spacing-lg);
}

/* 동적 컬럼 설정 (데스크톱만) */
@media (min-width: 992px) {
    .premium-banner-grid[data-cols="3"] {
        grid-template-columns: repeat(3, 1fr);
    }
    .premium-banner-grid[data-cols="4"] {
        grid-template-columns: repeat(4, 1fr);
    }
}

.premium-banner-item {
    position: relative;
    width: 100%;
    aspect-ratio: 3.75 / 1;  /* 375:100 비율 */
    opacity: 0;
    animation: bannerFadeIn 0.5s ease forwards;
}

.premium-banner-item:nth-child(1) { animation-delay: 0.1s; }
.premium-banner-item:nth-child(2) { animation-delay: 0.2s; }
.premium-banner-item:nth-child(3) { animation-delay: 0.3s; }
.premium-banner-item:nth-child(4) { animation-delay: 0.4s; }

.premium-banner-placeholder {
    background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
    /* border는 .banner-link에서 처리 */
    text-align: center;
    height: 100%;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border-radius: var(--border-radius-base);
}

/* 프리미엄 배너 반짝임 효과 */
.premium-banner-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 215, 0, 0.3), transparent);
    transition: left 0.5s ease;
}

.premium-banner-placeholder:hover::before {
    left: 100%;
}

.premium-banner-placeholder:hover {
    /* transform 제거 - home.css에서 처리 */
    z-index: 10;
    box-shadow: var(--shadow-gold);
    background: linear-gradient(135deg, #2a2a2a, #3a3a3a);
}

.premium-banner-placeholder.empty {
    background: linear-gradient(135deg, #0a0a0a, #1a1a1a);
    border: 1px dashed #666;  /* 더 밝게 */
    opacity: 0.7;  /* 투명도 줄임 */
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

a.premium-banner-placeholder.empty {
    display: block;
    text-decoration: none;
}

.premium-banner-placeholder.empty:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(255, 215, 0, 0.2);
    border-color: var(--primary-gold);
    opacity: 0.9;
}

/* ============================================
   3. 일반 배너 그리드
   ============================================ */
.standard-banner-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 기본값 4열 */
    gap: 3px;
    margin-bottom: var(--spacing-xl);
}

/* 동적 컬럼 설정 (데스크톱만) */
@media (min-width: 992px) {
    .standard-banner-grid[data-cols="5"] {
        grid-template-columns: repeat(5, 1fr);
    }
    .standard-banner-grid[data-cols="6"] {
        grid-template-columns: repeat(6, 1fr);
    }
}

.standard-banner-item {
    position: relative;
    width: 100%;
    aspect-ratio: 3.75 / 1;  /* 375:100 비율 */
    opacity: 0;
    animation: bannerFadeIn 0.5s ease forwards;
}

/* 일반 배너 순차 애니메이션 */
.standard-banner-item:nth-child(n) { animation-delay: calc(0.05s * var(--i)); }
.standard-banner-item:nth-child(1) { --i: 1; }
.standard-banner-item:nth-child(2) { --i: 2; }
.standard-banner-item:nth-child(3) { --i: 3; }
.standard-banner-item:nth-child(4) { --i: 4; }
.standard-banner-item:nth-child(5) { --i: 5; }
.standard-banner-item:nth-child(6) { --i: 6; }
.standard-banner-item:nth-child(7) { --i: 7; }
.standard-banner-item:nth-child(8) { --i: 8; }
.standard-banner-item:nth-child(9) { --i: 9; }
.standard-banner-item:nth-child(10) { --i: 10; }
.standard-banner-item:nth-child(11) { --i: 11; }
.standard-banner-item:nth-child(12) { --i: 12; }
.standard-banner-item:nth-child(13) { --i: 13; }
.standard-banner-item:nth-child(14) { --i: 14; }
.standard-banner-item:nth-child(15) { --i: 15; }
.standard-banner-item:nth-child(16) { --i: 16; }

.standard-banner-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0f0f0f, #1f1f1f);
    /* border는 .banner-link에서 처리 */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
    padding: var(--spacing-sm);
    box-sizing: border-box;
    border-radius: var(--border-radius-sm);
}

.standard-banner-placeholder:hover {
    background: linear-gradient(135deg, #1f1f1f, #2f2f2f);
    /* transform 제거 - home.css에서 처리 */
    z-index: 10;
    box-shadow: 0 3px 10px rgba(255, 215, 0, 0.2);
}

.standard-banner-placeholder.empty {
    background: linear-gradient(135deg, #0a0a0a, #151515);
    border: 1px dashed #555;  /* 더 밝게 */
    opacity: 0.6;  /* 투명도 줄임 */
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

a.standard-banner-placeholder.empty {
    display: flex;
    text-decoration: none;
}

.standard-banner-placeholder.empty:hover {
    background: linear-gradient(135deg, #0f0f0f, #1a1a1a);
    transform: translateY(-2px);
    box-shadow: 0 3px 10px rgba(255, 215, 0, 0.1);
    border-color: var(--primary-gold);
    opacity: 0.8;
}

/* ============================================
   4. 배너 콘텐츠
   ============================================ */
.banner-content {
    padding: var(--spacing-md);
}

.banner-content h3 {
    color: var(--primary-gold);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.banner-content p {
    color: #bbb;  /* #ccc보다 약간 어둡게 - 더 나은 가독성 */
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.banner-stats {
    color: var(--secondary-gold);
    font-size: var(--font-size-xs);
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.banner-title {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--primary-gold);
    margin-bottom: var(--spacing-xs);
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 90%;
}

.banner-description {
    font-size: var(--font-size-xs);
    color: #999;  /* #aaa보다 약간 어둡게 조정 */
    line-height: 1.1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 90%;
}

.standard-banner-placeholder.empty .banner-title {
    color: #777;  /* #666보다 밝게 */
    font-size: var(--font-size-xs);
}

.standard-banner-placeholder.empty .banner-description {
    color: #666;  /* #555보다 밝게 */
    font-size: 0.6rem;
}

/* ============================================
   5. 배너 애니메이션
   ============================================ */
@keyframes bannerFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bannerPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

@keyframes bannerShimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* 프리미엄 배너 특별 효과 */
.premium-banner-item.featured {
    animation: bannerPulse 2s ease-in-out infinite;
}

.premium-banner-item.featured .premium-banner-placeholder {
    border-width: 2px;
    border-color: var(--secondary-gold);
    box-shadow: var(--shadow-gold);
}

/* ============================================
   6. 배너 인터랙션 상태
   ============================================ */
.banner-loading {
    background: linear-gradient(90deg, #1a1a1a 0%, #2a2a2a 50%, #1a1a1a 100%);
    background-size: 200% 100%;
    animation: bannerShimmer 1.5s ease-in-out infinite;
}

.banner-error {
    background: linear-gradient(135deg, #2a0a0a, #1a0000);
    border-color: #aa0000;
}

.banner-success {
    background: linear-gradient(135deg, #0a2a0a, #001a00);
    border-color: #00aa00;
}

/* ============================================
   7. 반응형 디자인 - 동적 그리드 지원
   ============================================ */
@media (max-width: 1200px) {
    /* 4열 이상이면 3열로 */
    .premium-banner-grid[style*="repeat(4,"],
    .premium-banner-grid[style*="repeat(5,"],
    .premium-banner-grid[style*="repeat(6,"] {
        grid-template-columns: repeat(3, 1fr) !important;
    }
    
    .standard-banner-grid[style*="repeat(5,"],
    .standard-banner-grid[style*="repeat(6,"] {
        grid-template-columns: repeat(4, 1fr) !important;
    }
    .standard-banner-grid[style*="repeat(4,"] {
        grid-template-columns: repeat(3, 1fr) !important;
    }
}

@media (max-width: 992px) {
    .premium-banner-grid,
    .standard-banner-grid {
        gap: 4px;
    }
    
    /* 3열 이상이면 2열로 */
    .premium-banner-grid[style*="repeat(3,"],
    .premium-banner-grid[style*="repeat(4,"],
    .premium-banner-grid[style*="repeat(5,"],
    .premium-banner-grid[style*="repeat(6,"] {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    
    .standard-banner-grid[style*="repeat(3,"],
    .standard-banner-grid[style*="repeat(4,"],
    .standard-banner-grid[style*="repeat(5,"],
    .standard-banner-grid[style*="repeat(6,"] {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    
    .banner-content h3 {
        font-size: var(--font-size-sm);
    }
    
    .banner-content p {
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 768px) {
    .premium-banner-section h2,
    .standard-banner-section h2 {
        font-size: var(--font-size-lg);
    }
    
    .banner-title {
        font-size: var(--font-size-xs);
    }
    
    .banner-description {
        font-size: 0.65rem;
    }
}

/* 576px-768px: 작은 태블릿/큰 모바일 */
@media (min-width: 576px) and (max-width: 767.98px) {
    /* 프리미엄은 2열, 일반은 1열 */
    .premium-banner-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    
    .standard-banner-grid {
        grid-template-columns: 1fr !important;
    }
}

/* 375px도 포함하여 모바일 전체 1열 */
@media (max-width: 575.98px) {
    /* 모바일에서는 모두 1열로 - 인라인 스타일 오버라이드 */
    .premium-banner-grid,
    .standard-banner-grid {
        grid-template-columns: 1fr !important;
        gap: 5px;
    }
    
    .banner-content h3 {
        font-size: var(--font-size-base);
    }
    
    .banner-content p {
        font-size: var(--font-size-sm);
    }
    
    .banner-title {
        font-size: var(--font-size-sm);
    }
    
    .banner-description {
        font-size: var(--font-size-xs);
    }
    
    /* 모바일에서 aspect-ratio 조정 */
    .premium-banner-item,
    .standard-banner-item {
        aspect-ratio: 4 / 1;
    }
}

/* ============================================
   8. 접근성 개선
   ============================================ */
.premium-banner-item a,
.standard-banner-item a {
    display: block;
    width: 100%;
    height: 100%;
    text-decoration: none;
}

.premium-banner-item a:focus,
.standard-banner-item a:focus {
    outline: 2px solid var(--primary-gold);
    outline-offset: 2px;
}

/* 스크린 리더용 텍스트 */
.banner-sr-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 키보드 네비게이션 지원 */
.premium-banner-item:focus-within,
.standard-banner-item:focus-within {
    z-index: 11;
}

/* 고대비 모드 */
@media (prefers-contrast: high) {
    .premium-banner-placeholder,
    .standard-banner-placeholder {
        border-width: 2px;
    }
    
    .premium-banner-placeholder:hover,
    .standard-banner-placeholder:hover {
        border-color: #ffffff;
    }
}

/* ============================================
   URL 툴팁 스타일
   ============================================ */
/* .banner-link 스타일은 home.css에서 정의 */

/* 오프라인 상태 툴팁만 표시 */
.banner-link[data-status="offline"]::after {
    content: "접속불가";
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: rgba(220, 53, 69, 0.95);
    color: #ffffff;
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

/* 호버 시 오프라인 표시 */
.banner-link[data-status="offline"]:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* 일반 배너의 작은 크기에 맞춤 */
.standard-banner-item .banner-link[data-status="offline"]::after {
    font-size: 10px;
    padding: 4px 8px;
    bottom: 5px;
}

/* 모바일에서 툴팁 조정 */
@media (max-width: 768px) {
    .banner-link[data-status="offline"]::after {
        font-size: 10px;
        padding: 4px 8px;
    }
}


/* ============================================
   배너 이미지 스타일 (추가)
   ============================================ */
/* 프리미엄 배너 이미지 */
.premium-banner-item .banner-image {
    width: 100%;
    height: 100%;  /* 250px → 100%로 변경: 부모 컨테이너에 맞춤 */
    object-fit: contain;  /* 이미지 전체가 박스 안에 들어가도록 */
    background-color: #000;  /* 빈 공간을 검은색으로 채움 */
    /* border 제거 - 테두리는 .banner-link에만 적용 */
    /* border-radius 제거 - 각진 디자인 */
    display: block;
    /* transform 제거 - 확대 효과 제거 */
    transition: opacity 0.3s ease;
}

.premium-banner-item:hover .banner-image {
    /* transform 제거 - 확대 효과 제거 */
    /* border 효과 제거 - 테두리는 .banner-link에서 처리 */
    opacity: 0.95;  /* 약간의 투명도 효과만 */
}

/* 일반 배너 이미지 */
.standard-banner-item .banner-image {
    width: 100%;
    height: 100%;  /* 90px → 100%로 변경: 부모 컨테이너에 맞춤 */
    object-fit: contain;  /* 이미지 전체가 박스 안에 들어가도록 */
    background-color: #000;  /* 빈 공간을 검은색으로 채움 */
    /* border-radius 제거 - 각진 디자인 */
    display: block;
    /* transform 제거 - 확대 효과 제거 */
    transition: opacity 0.3s ease;
}

.standard-banner-item:hover .banner-image {
    /* transform 제거 - 확대 효과 제거 */
    opacity: 0.95;  /* 약간의 투명도 효과만 */
}

/* 모바일 반응형 - height는 100%로 유지 */
@media (max-width: 768px) {
    .premium-banner-item .banner-image,
    .standard-banner-item .banner-image {
        height: 100%;  /* 부모 컨테이너에 맞춤 유지 */
    }
}

@media (max-width: 480px) {
    .premium-banner-item .banner-image,
    .standard-banner-item .banner-image {
        height: 100%;  /* 부모 컨테이너에 맞춤 유지 */
    }
}