.main-header {
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(229, 231, 235, 0.5);
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo-wrapper {
    flex-shrink: 0;
}

.logo {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1F2937;
    letter-spacing: -0.02em;
}

.main-nav {
    margin-left: 3rem;
}

.nav-list {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    text-decoration: none;
    color: #4B5563;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: #1F2937;
    background-color: rgba(229, 231, 235, 0.4);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn {
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-text {
    color: #4B5563;
}

.btn-text:hover {
    color: #1F2937;
    background-color: rgba(229, 231, 235, 0.4);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--gray-900);
    font-weight: 600;
    border: none;
    box-shadow: 0 2px 4px rgba(255, 192, 67, 0.2);
}

.btn-primary:hover {
    box-shadow: 0 4px 6px rgba(255, 192, 67, 0.3);
}

.btn-register {
    background-color: var(--primary);
    color: var(--gray-900);
}

.main-nav a:hover {
    color: var(--primary-dark);
}

.logo-text span {
    color: var(--primary-dark);
}

/* 모바일 반응형 */
@media (max-width: 768px) {
    .header-container {
        padding: 0 1.5rem;
        height: 70px;
    }
    
    .main-nav {
        margin-left: 1rem;
    }
    
    .nav-list {
        gap: 1rem;
    }
    
    .nav-link {
        font-size: 0.9rem;
        padding: 0.4rem 0.6rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 0 2rem;
        height: 65px;
    }
    
    .logo-text {
        font-size: 1.3rem;
    }
    
    .main-nav {
        margin-left: 0.5rem;
    }
    
    .nav-list {
        gap: 0.5rem;
    }
    
    .nav-link {
        font-size: 0.85rem;
        padding: 0.3rem 0.5rem;
    }
    
    .btn {
        padding: 0.45rem 0.8rem;
        font-size: 0.85rem;
    }
}

/* External link icon styling */
.external-icon {
    margin-left: 0.25rem;
    font-size: 0.8rem;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.nav-link:hover .external-icon {
    opacity: 1;
}