/* ===================
   V3 Page Hero
   =================== */
.v3-page-hero {
    position: relative;
    padding: 60px 0 70px;
    background: linear-gradient(135deg, var(--v3-primary-light) 0%, #e6faf3 40%, #d4f5e9 100%);
    overflow: hidden;
}

/* 배경 장식 원형 요소들 */
.v3-page-hero::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -40px;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(4, 195, 141, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.v3-page-hero::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -60px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(4, 195, 141, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

/* 브레드크럼 */
.v3-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 28px;
    font-family: var(--v3-font-body);
    font-size: 14px;
}

.v3-breadcrumb a {
    color: var(--v3-text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.v3-breadcrumb a:hover {
    color: var(--v3-primary);
}

.v3-breadcrumb__sep {
    color: var(--v3-border);
    font-size: 10px;
}

.v3-breadcrumb__current {
    color: var(--v3-primary);
    font-weight: 600;
}

/* 히어로 콘텐츠 */
.v3-page-hero__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.v3-page-hero__text h1 {
    font-family: var(--v3-font);
    font-size: 40px;
    font-weight: 800;
    color: var(--v3-text);
    line-height: 1.2;
    margin-bottom: 12px;
    position: relative;
}

/* 제목 아래 장식 라인 */
.v3-page-hero__text h1::after {
    content: '';
    display: block;
    width: 48px;
    height: 4px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--v3-primary), var(--v3-primary-hover));
    margin-top: 16px;
}

.v3-page-hero__text p {
    font-family: var(--v3-font-body);
    font-size: 17px;
    font-weight: 400;
    color: var(--v3-text-light);
    line-height: 1.6;
    margin-top: 20px;
    word-break: keep-all;
}

/* 히어로 아이콘 */
.v3-page-hero__icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(4, 195, 141, 0.12), inset 0 0 0 1px rgba(4, 195, 141, 0.1);
    animation: v3-hero-float 4s ease-in-out infinite;
    position: relative;
}

.v3-page-hero__icon svg {
    width: 72px;
    height: 72px;
}

/* 아이콘 주변 장식 도트 */
.v3-page-hero__icon::before {
    content: '';
    position: absolute;
    top: -8px;
    right: -8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--v3-primary);
    opacity: 0.2;
    animation: v3-dot-pulse 3s ease-in-out infinite;
}

.v3-page-hero__icon::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: -12px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--v3-primary);
    opacity: 0.15;
    animation: v3-dot-pulse 3s ease-in-out infinite 1.5s;
}

@keyframes v3-hero-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes v3-dot-pulse {
    0%, 100% { transform: scale(1); opacity: 0.2; }
    50% { transform: scale(1.4); opacity: 0.35; }
}

/* ===================
   V3 Board Container
   =================== */
.v3-board-container {
    padding: 60px 0 100px;
    background-color: var(--v3-bg);
}

.v3-board-container .v3-inner {
    max-width: 1200px;
}

/* kboard 스타일 오버라이드 */
.v3-board-container .kboard-list {
    font-family: var(--v3-font-body);
}

.v3-board-container .kboard-list .kboard-list-header-board th {
    font-family: var(--v3-font);
    font-weight: 600;
    color: var(--v3-text);
    border-bottom: 2px solid var(--v3-text);
    padding: 14px 12px;
    font-size: 14px;
}

.v3-board-container .kboard-list .kboard-list-body td {
    padding: 14px 12px;
    font-size: 15px;
    color: var(--v3-text-body);
    border-bottom: 1px solid var(--v3-border);
    font-family: var(--v3-font-body);
}

.v3-board-container .kboard-list .kboard-list-body td a {
    color: var(--v3-text-body);
    text-decoration: none;
    transition: color 0.2s;
}

.v3-board-container .kboard-list .kboard-list-body td a:hover {
    color: var(--v3-primary);
}

.v3-board-container .kboard-list .kboard-list-body tr:hover {
    background-color: var(--v3-primary-light);
}

/* kboard 검색 영역 */
.v3-board-container .kboard-search {
    border-radius: var(--v3-radius-sm);
}

/* kboard 페이지네이션 */
.v3-board-container .kboard-pagination a,
.v3-board-container .kboard-pagination span {
    font-family: var(--v3-font-body);
    border-radius: 8px;
    transition: all 0.2s;
}

.v3-board-container .kboard-pagination .current {
    background-color: var(--v3-primary);
    border-color: var(--v3-primary);
}

/* kboard 상세 페이지 */
.v3-board-container .kboard-document {
    font-family: var(--v3-font-body);
}

.v3-board-container .kboard-document .kboard-document-header h1 {
    font-family: var(--v3-font);
    font-size: 24px;
    font-weight: 700;
    color: var(--v3-text);
}

/* 라이브 그리드 오버라이드 */
.v3-board-container .yt-live-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.v3-board-container .yt-live-card {
    border-radius: var(--v3-radius-sm);
    overflow: hidden;
    box-shadow: var(--v3-shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.v3-board-container .yt-live-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--v3-shadow-hover);
}

/* ===================
   V3 Live Grid (목록 페이지)
   =================== */
.v3-board-container .youtube-live-container {
    max-width: 100%;
    padding-bottom: 0;
}

.v3-board-container .youtube-live-header {
    display: none;
}

.v3-board-container .section-subtitle {
    font-family: var(--v3-font);
    font-size: 20px;
    font-weight: 700;
    color: var(--v3-text);
    margin: 0 0 24px;
    padding: 0 0 16px;
    border-bottom: 2px solid var(--v3-text);
    position: relative;
}

.v3-board-container .section-subtitle::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 80px;
    height: 2px;
    background: var(--v3-primary);
}

.v3-board-container .youtube-live-grid {
    gap: 24px;
    margin-bottom: 48px;
}

.v3-board-container .youtube-live-item {
    border-radius: var(--v3-radius-sm);
    overflow: hidden;
    background: var(--v3-bg);
    box-shadow: var(--v3-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.v3-board-container .youtube-live-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--v3-shadow-hover);
}

.v3-board-container .youtube-thumbnail {
    border-radius: var(--v3-radius-sm) var(--v3-radius-sm) 0 0;
    background-color: var(--v3-bg-section);
}

.v3-board-container .youtube-live-badges {
    top: 12px;
    left: 12px;
    gap: 6px;
}

.v3-board-container .live-badge,
.v3-board-container .past-badge,
.v3-board-container .dday-badge {
    font-family: var(--v3-font);
    font-size: 12px;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: var(--v3-radius-pill);
}

.v3-board-container .live-badge {
    background-color: #e53e3e;
}

.v3-board-container .past-badge {
    background-color: var(--v3-text-muted);
}

.v3-board-container .dday-badge.upcoming {
    background-color: var(--v3-primary);
}

.v3-board-container .dday-badge.today {
    background-color: #38a169;
}

.v3-board-container .youtube-play-button {
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.v3-board-container .youtube-live-item:hover .youtube-play-button {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

.v3-board-container .youtube-play-button .play-button-bg {
    fill: var(--v3-primary);
}

.v3-board-container .youtube-info {
    padding: 18px 20px 22px;
}

.v3-board-container .youtube-title {
    font-family: var(--v3-font);
    font-size: 16px;
    font-weight: 700;
    color: var(--v3-text);
    margin-bottom: 8px;
    line-height: 1.45;
}

.v3-board-container .youtube-meta {
    font-family: var(--v3-font-body);
    font-size: 13px;
    color: var(--v3-text-muted);
}

.v3-board-container .youtube-date {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
}

.v3-board-container .youtube-date::before {
    content: '\f017';
    font-family: 'Font Awesome 5 Free';
    font-weight: 400;
    font-size: 12px;
    color: var(--v3-primary);
}

/* 빈 메시지 */
.v3-board-container .no-live-message {
    padding: 80px 20px;
    text-align: center;
    font-family: var(--v3-font-body);
    color: var(--v3-text-muted);
    font-size: 16px;
    background: var(--v3-bg-section);
    border-radius: var(--v3-radius-sm);
}

/* 페이지네이션 */
.v3-board-container .youtube-live-pagination {
    margin: 40px 0 0;
}

.v3-board-container .youtube-live-pagination-nav {
    gap: 6px;
}

.v3-board-container .youtube-live-pagination-nav .page-item {
    font-family: var(--v3-font-body);
    min-width: 40px;
    height: 40px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--v3-text-body);
    background-color: var(--v3-bg-section);
    transition: all 0.2s ease;
}

.v3-board-container .youtube-live-pagination-nav .page-item:hover {
    background-color: var(--v3-primary-light);
    color: var(--v3-primary);
}

.v3-board-container .youtube-live-pagination-nav .page-item.active {
    background-color: var(--v3-primary);
    color: #fff;
}

.v3-board-container .youtube-live-pagination-nav .first-page,
.v3-board-container .youtube-live-pagination-nav .prev-page,
.v3-board-container .youtube-live-pagination-nav .next-page,
.v3-board-container .youtube-live-pagination-nav .last-page {
    width: 40px;
    color: var(--v3-text-muted);
}

.v3-board-container .youtube-live-pagination-nav .first-page:hover,
.v3-board-container .youtube-live-pagination-nav .prev-page:hover,
.v3-board-container .youtube-live-pagination-nav .next-page:hover,
.v3-board-container .youtube-live-pagination-nav .last-page:hover {
    color: var(--v3-primary);
}

/* ===================
   V3 Live Detail (상세 페이지)
   =================== */
.v3-board-container .youtube-live-detail-container {
    max-width: 100%;
    padding: 0;
}

.v3-board-container .youtube-live-detail-header {
    margin: 0 0 32px;
}

.v3-board-container .back-to-list {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--v3-font);
    font-size: 15px;
    font-weight: 600;
    color: var(--v3-text-light);
    text-decoration: none;
    padding: 10px 20px;
    background: var(--v3-bg-section);
    border-radius: var(--v3-radius-pill);
    transition: all 0.2s ease;
}

.v3-board-container .back-to-list:hover {
    background: var(--v3-primary-light);
    color: var(--v3-primary);
}

.v3-board-container .youtube-live-detail-content {
    gap: 40px;
}

/* 비디오 플레이어 */
.v3-board-container .youtube-embed-container {
    border-radius: var(--v3-radius);
    box-shadow: var(--v3-shadow);
    overflow: hidden;
}

.v3-board-container .youtube-thumbnail-fallback {
    border-radius: var(--v3-radius);
    overflow: hidden;
}

/* 상세 정보 영역 */
.v3-board-container .youtube-live-info {
    background: var(--v3-bg-section);
    border-radius: var(--v3-radius);
    padding: 36px;
}

.v3-board-container .youtube-live-title {
    font-family: var(--v3-font);
    font-size: 26px;
    font-weight: 800;
    color: var(--v3-text);
    letter-spacing: -0.5px;
    line-height: 1.35;
    margin-bottom: 24px;
}

.v3-board-container .youtube-live-meta {
    margin-bottom: 0;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--v3-border);
}

.v3-board-container .youtube-live-datetime {
    font-family: var(--v3-font-body);
    font-size: 15px;
    color: var(--v3-text-body);
    gap: 10px;
    margin-bottom: 16px;
}

.v3-board-container .youtube-live-datetime svg {
    color: var(--v3-primary);
    flex-shrink: 0;
}

.v3-board-container .youtube-live-datetime .dday-badge {
    font-family: var(--v3-font);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: var(--v3-radius-pill);
    margin-left: 4px;
}

.v3-board-container .youtube-live-status {
    font-family: var(--v3-font);
    font-size: 14px;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: var(--v3-radius-pill);
    margin-bottom: 0;
}

.v3-board-container .youtube-live-status.upcoming {
    background-color: var(--v3-primary);
}

.v3-board-container .youtube-live-status.past {
    background-color: var(--v3-text-muted);
}

.v3-board-container .youtube-live-actions {
    margin-top: 20px;
    gap: 12px;
}

.v3-board-container .youtube-watch-btn {
    font-family: var(--v3-font);
    font-size: 15px;
    font-weight: 700;
    padding: 12px 28px;
    border-radius: var(--v3-radius-pill);
    background: linear-gradient(135deg, #e53e3e, #c53030);
    color: #fff;
    gap: 10px;
    transition: all 0.3s ease;
}

.v3-board-container .youtube-watch-btn:hover {
    background: linear-gradient(135deg, #c53030, #9b2c2c);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(229, 62, 62, 0.3);
    color: #fff;
}

.v3-board-container .share-btn {
    font-family: var(--v3-font);
    font-size: 15px;
    font-weight: 600;
    padding: 12px 28px;
    border-radius: var(--v3-radius-pill);
    background: #fff;
    color: var(--v3-text);
    border: 1px solid var(--v3-border);
}

.v3-board-container .share-btn:hover {
    border-color: var(--v3-primary);
    color: var(--v3-primary);
    background: var(--v3-primary-light);
}

/* 특강 소개 */
.v3-board-container .youtube-live-description {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--v3-border);
}

.v3-board-container .youtube-live-description h3 {
    font-family: var(--v3-font);
    font-size: 18px;
    font-weight: 700;
    color: var(--v3-text);
    margin-bottom: 16px;
}

.v3-board-container .description-content {
    font-family: var(--v3-font-body);
    font-size: 15px;
    line-height: 1.8;
    color: var(--v3-text-body);
}

/* ===================
   Responsive
   =================== */
@media (max-width: 1024px) {
    .v3-page-hero {
        padding: 48px 0 56px;
    }

    .v3-page-hero__text h1 {
        font-size: 32px;
    }

    .v3-page-hero__icon {
        width: 120px;
        height: 120px;
    }

    .v3-page-hero__icon svg {
        width: 60px;
        height: 60px;
    }

    .v3-board-container .yt-live-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .v3-board-container .youtube-live-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .v3-board-container .youtube-live-title {
        font-size: 22px;
    }

    .v3-board-container .youtube-live-info {
        padding: 28px;
    }
}

@media (max-width: 768px) {
    .v3-page-hero {
        padding: 36px 0 44px;
    }

    .v3-page-hero__content {
        gap: 24px;
    }

    .v3-page-hero__text h1 {
        font-size: 28px;
    }

    .v3-page-hero__text h1::after {
        width: 36px;
        height: 3px;
        margin-top: 12px;
    }

    .v3-page-hero__text p {
        font-size: 15px;
        margin-top: 16px;
    }

    .v3-page-hero__icon {
        width: 100px;
        height: 100px;
    }

    .v3-page-hero__icon svg {
        width: 48px;
        height: 48px;
    }

    .v3-breadcrumb {
        margin-bottom: 20px;
        font-size: 13px;
    }

    .v3-board-container {
        padding: 40px 0 60px;
    }

    .v3-board-container .yt-live-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .v3-board-container .youtube-live-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .v3-board-container .youtube-live-detail-content {
        grid-template-columns: 1fr;
    }

    .v3-board-container .youtube-live-title {
        font-size: 20px;
    }

    .v3-board-container .youtube-live-info {
        padding: 24px 20px;
    }

    .v3-board-container .youtube-watch-btn {
        font-size: 14px;
        padding: 10px 22px;
    }
}

@media (max-width: 480px) {
    .v3-page-hero {
        padding: 28px 0 36px;
    }

    .v3-page-hero__content {
        flex-direction: column-reverse;
        align-items: center;
        text-align: center;
        gap: 20px;
    }

    .v3-page-hero__text h1 {
        font-size: 24px;
    }

    .v3-page-hero__text h1::after {
        margin-left: auto;
        margin-right: auto;
    }

    .v3-page-hero__icon {
        width: 88px;
        height: 88px;
    }

    .v3-page-hero__icon svg {
        width: 42px;
        height: 42px;
    }

    .v3-board-container .yt-live-grid {
        grid-template-columns: 1fr;
    }

    .v3-board-container .youtube-live-grid {
        grid-template-columns: 1fr;
    }

    .v3-board-container .youtube-live-info {
        padding: 20px 16px;
    }

    .v3-board-container .youtube-live-title {
        font-size: 18px;
    }

    .v3-board-container .youtube-live-actions {
        flex-direction: column;
    }

    .v3-board-container .youtube-watch-btn,
    .v3-board-container .share-btn {
        width: 100%;
        justify-content: center;
    }
}