/* 기본 스타일 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: #6a1b9a;
    background-color: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 헤더 스타일 */
.header {
    background: linear-gradient(135deg, #6a1b9a 0%, #8e24aa 100%);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h1 {
    color: white;
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #ffd700;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* 히어로 섹션 */
.hero {
    background: linear-gradient(135deg, #6a1b9a 0%, #8e24aa 100%);
    color: white;
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: #6a1b9a;
    color: white;
}

.btn-primary:hover {
    background: #8e24aa;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #333;
}

.btn-outline {
    background: transparent;
    color: #6a1b9a;
    border: 2px solid #6a1b9a;
}

.btn-outline:hover {
    background: #6a1b9a;
    color: white;
}

.hero-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.8);
}

.hero-illustration i {
    animation: float 3s ease-in-out infinite;
}

.hero-illustration i:nth-child(2) {
    animation-delay: 1s;
}

.hero-illustration i:nth-child(3) {
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* 섹션 스타일 */
.section {
    padding: 80px 0;
}

.section.bg-light {
    background-color: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #6a1b9a;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 3rem;
}

/* 동영상 그리드 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.video-card {
    background: white;
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
}

.video-thumbnail {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: white;
    font-size: 3rem;
}

.video-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.video-card p {
    color: #666;
    line-height: 1.5;
}

.video-card {
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.card-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: #4CAF50;
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* 콘텐츠 그리드 */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.content-card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 8px 25px rgba(106, 27, 154, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.content-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(106, 27, 154, 0.2);
    border-color: #6a1b9a;
}

.content-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #6a1b9a 0%, #8e24aa 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    color: white;
    font-size: 2.5rem;
}

.content-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #6a1b9a;
}

.content-card p {
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.6;
    font-size: 1.1rem;
}

/* 메일링리스트 섹션 */
.bg-light {
    background-color: #f8f9fa;
}

.newsletter-form-container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(106, 27, 154, 0.1);
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 1rem;
    color: #6a1b9a;
    background: white;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #6a1b9a;
    box-shadow: 0 0 0 3px rgba(106, 27, 154, 0.1);
}

.form-group input::placeholder {
    color: #999;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.newsletter-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.newsletter-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.newsletter-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* 게임 그리드 */
.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.game-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.game-card:hover {
    transform: translateY(-5px);
}

.game-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.game-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.game-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.game-card {
    cursor: pointer;
    position: relative;
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.game-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: #4CAF50;
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* 교육자료 그리드 */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.education-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.education-card:hover {
    transform: translateY(-5px);
}

.education-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.education-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.education-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

/* 소개 섹션 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-top: 3rem;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 2rem;
}

.about-features {
    list-style: none;
}

.about-features li {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.about-features i {
    color: #667eea;
    margin-right: 1rem;
    font-size: 1.2rem;
}

.about-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    font-size: 4rem;
    color: #667eea;
}

.about-illustration i {
    animation: float 3s ease-in-out infinite;
}

.about-illustration i:nth-child(2) {
    animation-delay: 1s;
}

.about-illustration i:nth-child(3) {
    animation-delay: 2s;
}

/* 푸터 */
.footer {
    background: #333;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #8e24aa;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #8e24aa;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #555;
    color: #ccc;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #667eea;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-illustration,
    .about-illustration {
        font-size: 3rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .section {
        padding: 60px 0;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

/* 스크롤 애니메이션 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 로딩 애니메이션 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 로그인/회원가입 모달 */
.auth-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    backdrop-filter: blur(5px);
}

.auth-modal-content {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-auth-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
    cursor: pointer;
    color: #999;
    transition: color 0.3s ease;
}

.close-auth-modal:hover {
    color: #333;
}

.auth-form h2 {
    text-align: center;
    color: #6a1b9a;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.auth-form .form-group {
    margin-bottom: 1.5rem;
}

.auth-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: #6a1b9a;
    font-weight: 500;
}

.auth-form input,
.auth-form select,
.auth-form textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 1rem;
    color: #333;
    transition: all 0.3s ease;
}

.auth-form input:focus,
.auth-form select:focus,
.auth-form textarea:focus {
    outline: none;
    border-color: #6a1b9a;
    box-shadow: 0 0 0 3px rgba(106, 27, 154, 0.1);
}

.auth-switch {
    text-align: center;
    margin-top: 1.5rem;
    color: #666;
}

.auth-switch a {
    color: #6a1b9a;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.3s ease;
}

.auth-switch a:hover {
    color: #8e24aa;
}

.auth-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.auth-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.auth-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* 콘텐츠 생성 폼 */
.content-create-container {
    max-width: 700px;
    margin: 0 auto 4rem;
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(106, 27, 154, 0.1);
}

.content-create-form h3 {
    text-align: center;
    color: #6a1b9a;
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

.content-create-form .form-group {
    margin-bottom: 1.5rem;
}

.content-create-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: #6a1b9a;
    font-weight: 500;
}

.content-create-form textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 1rem;
    color: #333;
    font-family: 'Noto Sans KR', sans-serif;
    resize: vertical;
    transition: all 0.3s ease;
}

.content-create-form textarea:focus {
    outline: none;
    border-color: #6a1b9a;
    box-shadow: 0 0 0 3px rgba(106, 27, 154, 0.1);
}

/* 내 콘텐츠 목록 */
.my-content-list {
    margin-top: 4rem;
}

.my-content-list h3 {
    text-align: center;
    color: #6a1b9a;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.user-content-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 8px 25px rgba(106, 27, 154, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.user-content-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(106, 27, 154, 0.2);
}

.user-content-card h4 {
    color: #6a1b9a;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.user-content-card .content-type {
    display: inline-block;
    padding: 0.3rem 1rem;
    background: linear-gradient(135deg, #6a1b9a 0%, #8e24aa 100%);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.user-content-card p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.user-content-card .content-date {
    color: #999;
    font-size: 0.9rem;
    margin-top: 1rem;
}

.user-content-card .content-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.user-content-card .btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

/* 사용자 메뉴 */
#userMenu {
    position: relative;
}

#userMenu .dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    min-width: 200px;
    padding: 0.5rem 0;
    display: none;
    z-index: 1000;
}

#userMenu .dropdown.active {
    display: block;
}

#userMenu .dropdown a {
    display: block;
    padding: 0.8rem 1.5rem;
    color: #333;
    text-decoration: none;
    transition: background 0.3s ease;
}

#userMenu .dropdown a:hover {
    background: #f8f9fa;
    color: #6a1b9a;
}

/* 콘텐츠 만들기 그리드 */
.create-content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.create-content-card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 8px 25px rgba(106, 27, 154, 0.1);
    transition: all 0.4s ease;
    cursor: pointer;
    border: 3px solid transparent;
    position: relative;
    overflow: hidden;
}

.create-content-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(135deg, #6a1b9a 0%, #8e24aa 100%);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.create-content-card:hover::before {
    transform: scaleX(1);
}

.create-content-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(106, 27, 154, 0.25);
    border-color: #6a1b9a;
}

.create-content-card.coming-soon {
    opacity: 0.6;
    cursor: not-allowed;
}

.create-content-card.coming-soon:hover {
    transform: none;
    border-color: transparent;
}

.create-content-card .content-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #6a1b9a 0%, #8e24aa 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2.5rem;
    transition: transform 0.4s ease;
}

.create-content-card:hover .content-icon {
    transform: scale(1.1) rotate(5deg);
}

.create-content-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #6a1b9a;
}

.create-content-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: 1rem;
}

.content-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(255, 107, 107, 0.3);
    animation: pulse 2s infinite;
}

.coming-soon-badge {
    background: linear-gradient(135deg, #95a5a6 0%, #7f8c8d 100%);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* 콘텐츠 상세 모달 */
.content-detail-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    backdrop-filter: blur(5px);
    overflow-y: auto;
    padding: 2rem 0;
}

.content-detail-content {
    background: white;
    border-radius: 25px;
    max-width: 900px;
    width: 90%;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    animation: modalSlideUp 0.4s ease;
    margin: auto;
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-content-detail {
    position: absolute;
    top: 20px;
    right: 25px;
    font-size: 2.5rem;
    cursor: pointer;
    color: #999;
    transition: all 0.3s ease;
    z-index: 10;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close-content-detail:hover {
    color: #333;
    background: #f0f0f0;
    transform: rotate(90deg);
}

.detail-header {
    background: linear-gradient(135deg, #6a1b9a 0%, #8e24aa 100%);
    color: white;
    padding: 3rem 2rem 2rem;
    border-radius: 25px 25px 0 0;
    text-align: center;
}

.detail-header .detail-icon {
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 4rem;
    backdrop-filter: blur(10px);
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.detail-header h2 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
}

.detail-body {
    padding: 3rem 2.5rem;
}

.detail-section {
    margin-bottom: 2.5rem;
}

.detail-section h3 {
    color: #6a1b9a;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.detail-section h3 i {
    font-size: 1.3rem;
}

.activity-steps {
    list-style: none;
    counter-reset: step-counter;
    padding-left: 0;
}

.activity-steps li {
    counter-increment: step-counter;
    margin-bottom: 1.5rem;
    padding-left: 3.5rem;
    position: relative;
    line-height: 1.8;
    color: #555;
}

.activity-steps li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 2.5rem;
    height: 2.5rem;
    background: linear-gradient(135deg, #6a1b9a 0%, #8e24aa 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

.materials-list,
.purpose-list {
    list-style: none;
    padding-left: 0;
}

.materials-list li,
.purpose-list li {
    margin-bottom: 1rem;
    padding-left: 2.5rem;
    position: relative;
    line-height: 1.8;
    color: #555;
}

.materials-list li i,
.purpose-list li i {
    position: absolute;
    left: 0;
    top: 0.3rem;
    color: #6a1b9a;
    font-size: 1.2rem;
}

.detail-actions {
    display: flex;
    gap: 1rem;
    margin-top: 3rem;
    justify-content: center;
    flex-wrap: wrap;
}

.detail-actions .btn {
    min-width: 180px;
}

/* 반응형 디자인 추가 */
@media (max-width: 768px) {
    .create-content-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .detail-body {
        padding: 2rem 1.5rem;
    }

    .detail-header {
        padding: 2rem 1.5rem 1.5rem;
    }

    .detail-header h2 {
        font-size: 1.8rem;
    }

    .activity-steps li {
        padding-left: 3rem;
        font-size: 0.95rem;
    }

    .detail-actions {
        flex-direction: column;
    }

    .detail-actions .btn {
        width: 100%;
    }
}