/**
 * Joyn LMS 코스 전시 페이지 - joyn-course-display-page_2.html 디자인
 *
 * 히어로, 검색, 필터, 카테고리 태그, 강의 카드 그리드
 */

/* ═══════════════════════════════════════════════════════════════
   CSS 변수 (joyn-course-display 전용)
   ═══════════════════════════════════════════════════════════════ */
.joyn-course-display {
    --joyn-navy: #2C4B7F;
    --joyn-navy-dark: #1E3A5F;
    --joyn-navy-light: #3A5A8F;
    --joyn-blue: #4A6FA5;
    --joyn-green: #00D775;
    --joyn-dark-green: #00B894;
    --joyn-yellow: #FFD93D;
    --joyn-white: #fff;
    --joyn-gray-50: #F9FAFB;
    --joyn-gray-100: #F7F7F7;
    --joyn-gray-200: #E5E7EB;
    --joyn-gray-500: #6B7280;
    --joyn-gray-700: #374151;
    --joyn-gray-800: #1F2937;
    --joyn-gray-900: #111827;
    --gradient-main: linear-gradient(135deg, #2C4B7F 0%, #1E3A5F 50%, #1a4d6e 100%);
    --gradient-hero: linear-gradient(145deg, #2C4B7F 0%, #1E3A5F 40%, #164a6e 70%, #0d3d52 100%);
    --gradient-hero-accent: radial-gradient(ellipse 80% 50% at 70% 20%, rgba(0, 215, 117, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 20% 80%, rgba(74, 111, 165, 0.25) 0%, transparent 50%);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-elevated: 0 20px 60px rgba(0, 0, 0, 0.15);
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

/* ═══════════════════════════════════════════════════════════════
   히어로 섹션 (전체 풀 영역 + 디자인 효과)
   ═══════════════════════════════════════════════════════════════ */
.joyn-course-display .joyn-hero-section {
    position: relative;
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    left: 0;
    box-sizing: border-box;
    background: var(--gradient-hero);
    background-image: var(--gradient-hero-accent), var(--gradient-hero);
    padding: 3.5rem 1.5rem;
    overflow: hidden;
}

/* 히어로 배경 장식 레이어 */
.joyn-course-display .joyn-hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.joyn-course-display .joyn-hero-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.4;
    animation: joyn-hero-float 18s ease-in-out infinite;
}

.joyn-course-display .joyn-hero-blob--1 {
    width: min(320px, 40vw);
    height: min(320px, 40vw);
    background: rgba(0, 215, 117, 0.35);
    top: -10%;
    right: 5%;
    animation-delay: 0s;
    animation-duration: 20s;
}

.joyn-course-display .joyn-hero-blob--2 {
    width: min(280px, 35vw);
    height: min(280px, 35vw);
    background: rgba(74, 111, 165, 0.4);
    bottom: -15%;
    left: -5%;
    animation-delay: -7s;
    animation-duration: 22s;
}

.joyn-course-display .joyn-hero-blob--3 {
    width: min(200px, 25vw);
    height: min(200px, 25vw);
    background: rgba(255, 217, 61, 0.15);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-name: joyn-hero-float-center;
    animation-delay: -3s;
    animation-duration: 16s;
}

.joyn-course-display .joyn-hero-glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 800px;
    height: 200px;
    background: radial-gradient(ellipse 80% 100% at 50% 0%, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

@keyframes joyn-hero-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(15px, -20px) scale(1.05); }
    66% { transform: translate(-10px, 10px) scale(0.98); }
}

@keyframes joyn-hero-float-center {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(calc(-50% + 20px), calc(-50% - 15px)) scale(1.08); }
}

/* 히어로 텍스트/CTA */
.joyn-course-display .joyn-hero-content {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    color: var(--joyn-white);
    z-index: 1;
    animation: joyn-hero-fade-in 0.8s ease-out;
}

@keyframes joyn-hero-fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.joyn-course-display .joyn-hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin: 0 0 1rem;
    color: var(--joyn-white);
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.25), 0 4px 40px rgba(0, 0, 0, 0.15);
    letter-spacing: -0.02em;
}

.joyn-course-display .joyn-hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    opacity: 0.95;
    margin: 0 0 1rem;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.2);
}

/* 히어로 검색 버튼 (모바일에서만 표시) */
.joyn-course-display .joyn-hero-search-btn {
    display: none;
}

/* 검색 바 */
.joyn-course-display .joyn-search-bar {
    max-width: 600px;
    margin: 1.5rem auto 0;
}

.joyn-course-display .joyn-search-input-wrapper {
    position: relative;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--shadow-elevated);
}

.joyn-course-display .joyn-search-input {
    width: 100%;
    padding: 1rem 1.5rem;
    padding-right: 120px;
    border: none;
    background: transparent;
    font-size: 1rem;
    color: var(--joyn-gray-800);
    outline: none;
}

.joyn-course-display .joyn-search-btn {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.75rem 2rem;
    background: var(--joyn-navy);
    color: var(--joyn-white);
    border: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.joyn-course-display .joyn-search-btn:hover {
    background: var(--joyn-navy-dark);
}

/* ═══════════════════════════════════════════════════════════════
   필터 섹션
   ═══════════════════════════════════════════════════════════════ */
.joyn-course-display .joyn-filter-section {
    max-width: 1200px;
    margin: -2rem auto 2rem;
    padding: 0 1rem;
    position: relative;
    z-index: 10;
}

.joyn-course-display .joyn-filter-card {
    background: var(--joyn-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
}

.joyn-course-display .joyn-filter-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.joyn-course-display .joyn-filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

.joyn-course-display .joyn-filter-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.joyn-course-display .joyn-filter-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--joyn-gray-700);
}

.joyn-course-display .joyn-filter-select {
    box-sizing: border-box;
    min-height: 54px;
    height: 54px;
    padding: 15px 1rem;
    line-height: 1.5;
    overflow: visible;
    border: 2px solid var(--joyn-gray-200);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    color: var(--joyn-gray-800);
    background: var(--joyn-white);
    cursor: pointer;
    text-align: center;
    text-align-last: center;
}

.joyn-course-display .joyn-filter-select:hover,
.joyn-course-display .joyn-filter-select:focus {
    border-color: var(--joyn-navy);
    outline: none;
}

/* 검색 버튼 (셀렉트와 동일 크기·모양) */
.joyn-course-display .joyn-filter-search-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    box-sizing: border-box;
    min-height: 54px;
    height: 54px;
    padding: 15px 1rem;
    border: 2px solid var(--joyn-gray-200);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--joyn-gray-800);
    background: var(--joyn-white);
    cursor: pointer;
    text-align: center;
    transition: all 0.3s ease;
}

.joyn-course-display .joyn-filter-search-btn:hover,
.joyn-course-display .joyn-filter-search-btn:focus {
    border-color: var(--joyn-navy);
    outline: none;
}

.joyn-course-display .joyn-filter-search-btn i {
    font-size: 1.125rem;
}

/* 카테고리 태그 */
.joyn-course-display .joyn-category-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0;
}

.joyn-course-display .joyn-category-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1.25rem;
    background: var(--joyn-gray-100);
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--joyn-gray-700);
    text-decoration: none;
    transition: all 0.3s ease;
}

.joyn-course-display .joyn-category-tag i {
    margin-right: 0.5rem;
}

.joyn-course-display .joyn-category-tag:hover {
    background: var(--joyn-navy-light);
    color: var(--joyn-white);
}

.joyn-course-display .joyn-category-tag.active {
    background: var(--joyn-navy);
    color: var(--joyn-white);
    border-color: var(--joyn-navy-dark);
}

/* 데스크톱: 필터 한 줄 컴팩트 배치 */
@media (min-width: 1024px) {
    .joyn-course-display .joyn-filter-card {
        padding: 0.75rem 1.25rem;
    }

    .joyn-course-display .joyn-filter-form {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: 0.75rem;
    }

    .joyn-course-display .joyn-category-tags {
        order: -1;
        flex: 1 1 auto;
        min-width: 0;
        margin-right: 1rem;
        gap: 0.5rem;
    }

    .joyn-course-display .joyn-category-tag {
        padding: 0.35rem 0.75rem;
        font-size: 0.8125rem;
    }

    .joyn-course-display .joyn-category-tag i {
        margin-right: 0.35rem;
    }

    .joyn-course-display .joyn-filter-grid {
        display: flex;
        flex: 0 0 auto;
        flex-wrap: wrap;
        gap: 0.5rem;
        grid-template-columns: unset;
    }

.joyn-course-display .joyn-filter-item {
    /* 선택창만 표시 (라벨은 선택창 내부에 포함) */
}

.joyn-course-display .joyn-filter-select {
        min-height: 38px;
        height: 38px;
        padding: 0.35rem 1.75rem 0.35rem 0.5rem;
        font-size: 0.8125rem;
        border-width: 1px;
    }

    .joyn-course-display .joyn-filter-search-btn {
        min-height: 38px;
        height: 38px;
        padding: 0.35rem 0.75rem;
        font-size: 0.8125rem;
        border-width: 1px;
    }

    .joyn-course-display .joyn-filter-search-btn i {
        font-size: 1rem;
    }
}

/* ═══════════════════════════════════════════════════════════════
   검색 모달
   ═══════════════════════════════════════════════════════════════ */
.joyn-search-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.joyn-search-modal[hidden] {
    display: none !important;
}

.joyn-search-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    cursor: pointer;
}

.joyn-search-modal__content {
    position: relative;
    width: 100%;
    max-width: 480px;
    background: var(--joyn-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-elevated);
}

.joyn-search-modal__close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--joyn-gray-700);
    cursor: pointer;
    border-radius: var(--radius-md);
}

.joyn-search-modal__close:hover {
    background: var(--joyn-gray-100);
    color: var(--joyn-gray-900);
}

.joyn-search-modal__title {
    margin: 0 0 1.25rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--joyn-gray-900);
}

.joyn-search-modal__form {
    display: block;
}

.joyn-search-modal__field {
    display: flex;
    gap: 0.5rem;
}

.joyn-search-modal__input {
    flex: 1;
    min-width: 0;
    padding: 0.75rem 1rem;
    border: 2px solid var(--joyn-gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
}

.joyn-search-modal__input:focus {
    outline: none;
    border-color: var(--joyn-navy);
}

.joyn-search-modal__submit,
.joyn-course-display .joyn-search-modal .joyn-search-modal__submit,
.joyn-search-modal__submit:hover {
    color: #fff !important;
}

.joyn-search-modal__submit {
    padding: 0.75rem 1.5rem;
    background: var(--joyn-navy);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
}

.joyn-search-modal__submit:hover {
    background: var(--joyn-navy-dark);
}

/* ═══════════════════════════════════════════════════════════════
   메인 콘텐츠
   ═══════════════════════════════════════════════════════════════ */
.joyn-course-display .joyn-main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem 3rem;
}

.joyn-course-display .joyn-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.joyn-course-display .joyn-section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--joyn-gray-900);
    margin: 0;
}

.joyn-course-display .joyn-view-toggle {
    display: flex;
    gap: 0.5rem;
}

.joyn-course-display .joyn-view-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--joyn-gray-200);
    background: var(--joyn-white);
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--joyn-gray-700);
    transition: all 0.3s ease;
}

.joyn-course-display .joyn-view-btn:hover,
.joyn-course-display .joyn-view-btn.active {
    background: var(--joyn-navy);
    border-color: var(--joyn-navy);
    color: var(--joyn-white);
}

/* 강의 그리드 */
.joyn-course-display .joyn-course-grid {
    display: grid;
    gap: 1.5rem;
    transition: grid-template-columns 0.3s ease;
}

.joyn-course-display .joyn-course-grid--grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.joyn-course-display .joyn-course-grid--list {
    grid-template-columns: 1fr;
}

.joyn-course-display .joyn-course-grid--list .joyn-course-card {
    display: flex;
}

.joyn-course-display .joyn-course-grid--list .joyn-course-thumbnail {
    width: 280px;
    min-width: 280px;
    height: 160px;
}

/* 강의 카드 */
.joyn-course-display .joyn-course-card {
    background: var(--joyn-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.4s ease;
}

.joyn-course-display .joyn-course-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-elevated);
}

.joyn-course-display .joyn-course-card__link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.joyn-course-display .joyn-course-thumbnail {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--joyn-navy);
}

.joyn-course-display .joyn-course-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.joyn-course-display .joyn-course-card:hover .joyn-course-thumbnail img {
    transform: scale(1.1);
}

.joyn-course-display .joyn-course-badge {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.375rem 0.875rem;
    background: linear-gradient(135deg, #00D775 0%, #00B894 100%);
    color: var(--joyn-white);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    text-transform: uppercase;
}

.joyn-course-display .joyn-course-level {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.375rem 0.875rem;
    background: rgba(0, 0, 0, 0.6);
    color: var(--joyn-white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

/* 썸네일 왼쪽 상단 카테고리 (작은 표시) */
.joyn-course-display .joyn-course-thumbnail-category {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    color: var(--joyn-white);
    font-size: 0.625rem;
    font-weight: 600;
    border-radius: 6px;
    line-height: 1.2;
}

.joyn-course-display .joyn-course-thumbnail-category i {
    font-size: 0.625rem;
}

/* 카테고리와 겹치지 않도록 Best/New 배지 아래로 */
.joyn-course-display .joyn-course-thumbnail-category + .joyn-course-badge {
    top: 1.35rem;
}

.joyn-course-display .joyn-course-content {
    padding: 1.25rem;
}

.joyn-course-display .joyn-course-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--joyn-gray-100);
    color: var(--joyn-navy);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.joyn-course-display .joyn-course-category i {
    margin-right: 0.25rem;
}

.joyn-course-display .joyn-course-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--joyn-gray-900);
    margin: 0 0 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.joyn-course-display .joyn-course-instructor {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.joyn-course-display .joyn-instructor-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--joyn-navy);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--joyn-white);
    font-weight: 600;
    font-size: 0.875rem;
}

.joyn-course-display .joyn-instructor-name {
    font-size: 0.875rem;
    color: var(--joyn-gray-600);
}

.joyn-course-display .joyn-course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--joyn-gray-200);
}

.joyn-course-display .joyn-course-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--joyn-gray-600);
}

.joyn-course-display .joyn-stat-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.joyn-course-display .joyn-stat-item .ri-star-fill {
    color: var(--joyn-yellow);
}

.joyn-course-display .joyn-course-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--joyn-navy);
}

.joyn-course-display .joyn-course-price--free {
    color: var(--joyn-green);
}

/* 페이지네이션 */
.joyn-course-display .joyn-pagination {
    margin-top: 2rem;
    text-align: center;
}

.joyn-course-display .joyn-pagination .page-numbers {
    display: inline-flex;
    gap: 0.5rem;
    align-items: center;
}

.joyn-course-display .joyn-pagination a.page-numbers,
.joyn-course-display .joyn-pagination span.page-numbers {
    padding: 0.5rem 1rem;
    border: 1px solid var(--joyn-gray-200);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--joyn-gray-700);
}

.joyn-course-display .joyn-pagination a.page-numbers:hover,
.joyn-course-display .joyn-pagination span.current {
    background: var(--joyn-navy);
    border-color: var(--joyn-navy);
    color: var(--joyn-white);
}

/* 결과 없음 */
.joyn-course-display .joyn-no-results {
    text-align: center;
    padding: 3rem;
}

.joyn-course-display .joyn-no-results p {
    margin-bottom: 1rem;
}

/* 반응형 */
@media (max-width: 768px) {
    .joyn-course-display .joyn-hero-search-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.35rem;
        margin-top: 0.75rem;
        padding: 0.5rem 1rem;
        background: rgba(255, 255, 255, 0.15);
        border: 1px solid rgba(255, 255, 255, 0.9);
        border-radius: var(--radius-full);
        color: var(--joyn-white);
        font-size: 0.875rem;
        font-weight: 600;
        cursor: pointer;
        transition: all 0.3s ease;
    }
    .joyn-course-display .joyn-hero-search-btn:hover {
        background: rgba(255, 255, 255, 0.25);
        border-color: var(--joyn-white);
    }
    .joyn-course-display .joyn-hero-search-btn i {
        font-size: 1rem;
    }

    .joyn-course-display .joyn-main-content {
        padding-top: 1.5rem;
        padding-left: 10px;
        padding-right: 10px;
    }
    .joyn-course-display .joyn-stat-item--students {
        display: none !important;
    }
    .joyn-course-display .joyn-course-meta {
        justify-content: center;
    }
    .joyn-course-display .joyn-filter-section {
        display: none;
    }
    .joyn-course-display .joyn-filter-grid {
        grid-template-columns: 1fr;
    }
    .joyn-course-display .joyn-course-grid--grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    .joyn-course-display .joyn-course-thumbnail {
        height: 100px;
    }
    .joyn-course-display .joyn-course-content {
        padding: 0.75rem;
    }
    .joyn-course-display .joyn-course-title {
        font-size: 0.875rem;
        -webkit-line-clamp: 2;
    }
    .joyn-course-display .joyn-instructor-avatar {
        width: 24px;
        height: 24px;
        font-size: 0.75rem;
    }
    .joyn-course-display .joyn-instructor-name,
    .joyn-course-display .joyn-course-stats {
        font-size: 0.75rem;
    }
    .joyn-course-display .joyn-course-price {
        font-size: 0.9375rem;
    }
    .joyn-course-display .joyn-course-grid--list .joyn-course-card {
        flex-direction: column;
    }
    .joyn-course-display .joyn-course-grid--list .joyn-course-thumbnail {
        width: 100%;
        min-width: 100%;
    }
}