/* ============================================
   프로페셔널 톤앤매너 개선
   더 신뢰도 높고 심플한 스타일
   ============================================ */

/* 전역 색상 재정의 - 차분하고 신뢰감 있는 톤 */
:root {
    /* 메인 컬러 - 더 차분한 퍼플 */
    --primary-color: #6B46C1;
    --primary-light: #9F7AEA;
    --primary-dark: #553C9A;
    
    /* 세컨더리 컬러 - 절제된 핑크 */
    --secondary-color: #D53F8C;
    --secondary-light: #ED64A6;
    
    /* 배경 - 깔끔한 그라데이션 */
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --gradient-primary: linear-gradient(135deg, #6B46C1 0%, #D53F8C 100%);
    
    /* 텍스트 */
    --text-primary: #2D3748;
    --text-secondary: #4A5568;
    --text-light: #718096;
}

/* 섹션 헤더 - 더 깔끔하고 프로페셔널 */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.section-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: linear-gradient(135deg, rgba(107, 70, 193, 0.1), rgba(213, 63, 140, 0.1));
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(107, 70, 193, 0.2);
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto;
}

/* About 카드 - 더 심플하고 신뢰감 있는 디자인 */
.about-card {
    background: white;
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.about-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(107, 70, 193, 0.12);
    transform: translateY(-4px);
}

.about-card .card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.about-card .card-icon i {
    font-size: 1.8rem;
    color: white;
}

.about-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.about-card p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 프로그램 카드 - 더 모던하고 깔끔한 스타일 */
.program-card {
    background: white;
    border: 2px solid #F7FAFC;
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.program-card:hover {
    border-color: var(--primary-light);
    box-shadow: 0 12px 32px rgba(107, 70, 193, 0.15);
    transform: translateY(-6px);
}

.program-card.featured {
    background: linear-gradient(135deg, rgba(107, 70, 193, 0.05), rgba(213, 63, 140, 0.05));
    border-color: var(--primary-color);
}

.program-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.program-icon i {
    font-size: 1.8rem;
    color: white;
}

.program-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.grade-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(107, 70, 193, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.popular-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.3);
}

/* Feature 카드 - 더 신뢰감 있는 디자인 */
.feature-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
}

.feature-number {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 3rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.1);
    line-height: 1;
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.feature-card p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

/* 버튼 스타일 개선 - 더 프로페셔널 */
.btn-primary,
.new-btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 4px 16px rgba(107, 70, 193, 0.25);
}

.btn-primary:hover,
.new-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(107, 70, 193, 0.35);
}

.btn-secondary,
.new-btn-secondary {
    background: transparent;
    color: var(--text-primary);
    padding: 1rem 2rem;
    border: 2px solid var(--primary-color);
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.btn-secondary:hover,
.new-btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(107, 70, 193, 0.3);
}

/* 갤러리 - 더 깔끔한 그리드 */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

/* 퀵 정보 바 - 더 모던하고 깔끔하게 */
.quick-info {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    padding: 2rem 0;
    border-bottom: 1px solid #E2E8F0;
}

.quick-info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
}

.quick-info-item:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.quick-info-item i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.info-text strong {
    display: block;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.25rem;
}

.info-text span {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 600;
}

/* Footer - 더 깔끔하고 프로페셔널 */
.footer {
    background: #1a1a2e;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-description {
    font-size: 1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 1rem;
}

.footer-links h4,
.footer-contact h4,
.footer-social h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1.5rem;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: var(--primary-light);
}