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

body {
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 스크롤 효과 */
html {
    scroll-behavior: smooth;
}

/* 네비게이션 효과 */
nav {
    transition: all 0.3s ease;
}

nav.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

/* 버튼 hover 효과 */
.btn-primary {
    transition: all 0.3s ease;
    transform: translateY(0);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4);
}

/* 카드 hover 효과 */
.card-hover {
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .text-4xl {
        font-size: 2rem;
    }
    
    .text-5xl {
        font-size: 2.5rem;
    }
    
    .text-6xl {
        font-size: 3rem;
    }
    
    .grid-cols-3 {
        grid-template-columns: 1fr;
    }
    
    .grid-cols-2 {
        grid-template-columns: 1fr;
    }
    
    .space-x-4 > * + * {
        margin-left: 0;
        margin-top: 1rem;
    }
}

/* 애니메이션 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 로딩 애니메이션 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(34, 197, 94, 0.3);
    border-radius: 50%;
    border-top-color: #22c55e;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 커스텀 스크롤바 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #22c55e;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #16a34a;
}