/* 성공사례 섹션 스타일 */
.cases-section {
    padding: 140px 0;
    background: var(--dark-bg);
    position: relative;
    overflow: hidden;
}

/* 배경 효과 */
.cases-section::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, 
        rgba(0, 255, 178, 0.03) 0%,
        rgba(0, 166, 81, 0.02) 30%,
        rgba(0, 255, 178, 0.01) 50%,
        transparent 70%);
    z-index: 0;
    border-radius: 50%;
    filter: blur(80px);
    animation: float 20s ease-in-out infinite;
}

.cases-section::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -5%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, 
        rgba(0, 255, 178, 0.02) 0%,
        rgba(0, 166, 81, 0.015) 40%,
        transparent 70%);
    z-index: 0;
    border-radius: 50%;
    filter: blur(60px);
    animation: float 15s ease-in-out infinite reverse;
}

/* 그리드 패턴 배경 */
.grid-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(45deg, rgba(0, 255, 178, 0.02) 1px, transparent 1px),
        linear-gradient(-45deg, rgba(0, 255, 178, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.4;
    z-index: 1;
}

@keyframes float {
    0% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(30px, 20px) rotate(5deg); }
    100% { transform: translate(0, 0) rotate(0deg); }
}

.cases-section .container {
    position: relative;
    z-index: 2;
}

/* 섹션 헤더 */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
}

.section-label {
    display: inline-block;
    padding: 12px 28px;
    background: linear-gradient(135deg, rgba(0, 255, 178, 0.1) 0%, rgba(0, 166, 81, 0.1) 100%);
    border: 1px solid rgba(0, 255, 178, 0.2);
    border-radius: 30px;
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 255, 178, 0.1);
}

.section-header h2 {
    font-size: 3.6rem;
    line-height: 1.3;
    margin-bottom: 32px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header h2 br {
    display: none;
}

.section-header p {
    font-size: 1.25rem;
    color: var(--gray-text);
    line-height: 1.6;
    margin-top: 24px;
}

/* 필터 버튼 */
.cases-filter {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 80px;
    flex-wrap: wrap;
    padding: 0 20px;
}

.filter-button {
    padding: 14px 32px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 255, 178, 0.1);
    border-radius: 40px;
    color: var(--gray-text);
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

.filter-button:hover {
    background: rgba(0, 255, 178, 0.1);
    border-color: rgba(0, 255, 178, 0.3);
    color: var(--light-text);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 255, 178, 0.15);
}

.filter-button.active {
    background: var(--primary-gradient);
    border-color: transparent;
    color: var(--dark-bg);
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(0, 255, 178, 0.25);
}

/* 성공사례 카드 그리드 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 40px;
    padding: 0 20px;
}

.case-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 178, 0.1);
    border-radius: 24px;
    padding: 40px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 255, 178, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 255, 178, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3),
                0 0 80px rgba(0, 255, 178, 0.1);
    background: rgba(255, 255, 255, 0.03);
}

.case-card:hover::before {
    opacity: 1;
}

.industry-tag {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 255, 178, 0.2);
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--primary-color);
    margin-bottom: 24px;
    font-weight: 500;
    position: relative;
    backdrop-filter: blur(5px);
}

.case-content {
    position: relative;
}

.case-content h3 {
    font-size: 1.8rem;
    margin-bottom: 16px;
    color: var(--light-text);
    font-weight: 700;
    line-height: 1.3;
}

.case-content p {
    color: var(--gray-text);
    margin-bottom: 32px;
    line-height: 1.6;
    font-size: 1.1rem;
}

.case-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    text-align: center;
    margin-top: 32px;
    position: relative;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-value {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
    line-height: 1;
}

.stat-label {
    color: var(--gray-text);
    font-size: 1rem;
    font-weight: 500;
}

/* 반응형 디자인 */
@media (max-width: 1200px) {
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .cases-section {
        padding: 100px 0;
    }
    
    .section-header h2 {
        font-size: 2.8rem;
    }
    
    .section-header h2 br {
        display: block;
    }
    
    .section-header p {
        font-size: 1.1rem;
        padding: 0 20px;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .cases-filter {
        gap: 12px;
        margin-bottom: 60px;
    }
    
    .filter-button {
        padding: 12px 24px;
        font-size: 1rem;
    }
}