/* 기본 스타일 */
body {
  margin: 0;
  font-family: Pretendard GOV Variable, Pretendard GOV, -apple-system, BlinkMacSystemFont, system-ui, Roboto,
    "Helvetica Neue", Segoe UI, Apple SD Gothic Neo, Noto Sans KR, Malgun Gothic, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
  background: linear-gradient(180deg, #4f46e5 0%, #7c3aed 50%, #a855f7 100%);
  color: #e5e7eb;
  overflow-x: hidden;
  animation: fadeInUp 1.2s ease forwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes shimmer {
  0% { background-position: -300px 0; }
  100% { background-position: 300px 0; }
}

header {
  position: absolute;
  top: 0; left: 0; width: 100%;
  padding: 1.2rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
  background: rgba(17, 24, 39, 0.92);
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

header a, header button {
  color: #e5e7eb;
  font-weight: 600;
  margin-left: 0.75rem;
  background: none;
  border: 1px solid #c084fc;
  padding: 0.35rem 0.8rem;
  border-radius: 9999px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.25s ease;
}

header a:first-child {
  font-size: 1.4rem;
  font-weight: 900;
  margin-left: 0;
  border: none;
  padding: 0;
  cursor: pointer;
}

header a:hover, header button:hover {
  color: white;
  background: linear-gradient(90deg, #c084fc, #a855f7);
  border-color: transparent;
  transform: scale(1.05);
}

header nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* 히어로 섹션 */
#hero {
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  min-height: 90vh;
  display: flex;
  gap: 1.5rem;
}
#hero h2 {
  font-size: 3.25rem;
  font-weight: 900;
  color: #fff;
  text-shadow: 0 0 12px rgba(192,132,252,0.8);
}
#hero p {
  max-width: 640px;
  color: #d1c7f7;
  font-size: 1.125rem;
  line-height: 1.5;
}

/* 버튼 */
#showServicesBtn {
  background: linear-gradient(90deg, #c084fc, #a855f7);
  color: white;
  font-weight: 700;
  padding: 0.75rem 1.5rem;
  border-radius: 9999px;
  box-shadow: 0 0 20px rgba(192,132,252,0.7);
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.3s ease;
  font-size: 1rem;
  max-width: 300px;
  margin: 0 auto;
  display: block;
}
#showServicesBtn:hover {
  background: linear-gradient(90deg, #b572fc, #973ff7);
  transform: scale(1.05);
}

/* 서비스 섹션 */
#services {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  max-width: 1280px;
  margin: 1rem auto 5rem auto;
  padding: 0 1rem;
}
#services.visible {
  opacity: 1;
  transform: translateY(0);
}
#services .grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.service-card {
  position: relative;
  background: rgba(31, 41, 55, 0.8);
  border: 1px solid rgba(167, 139, 250, 0.4);
  border-radius: 24px;
  padding: 30px;
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  overflow: hidden;
  color: #e5e7eb;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}
.service-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 10px 25px rgba(192,132,252,0.6);
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: -75%;
  height: 100%;
  width: 50%;
  background: linear-gradient(to right, rgba(255,255,255,0), rgba(255,255,255,0.12), rgba(255,255,255,0));
  transform: skewX(-20deg);
  animation: shimmer 3s infinite;
}

.service-title {
  font-size: 1.4rem;
  margin-bottom: 10px;
  color: #ddd;
}
.service-description {
  font-size: 1rem;
  color: #bbb;
  line-height: 1.6;
}

/* 아웃소싱 섹션 */
#outsourcing {
  padding: 6rem 1rem;
  max-width: 960px;
  margin: 0 auto 6rem;
  text-align: center;
}
#outsourcing h3 {
  font-size: 2.25rem;
  font-weight: 900;
  color: #eaddff;
  margin-bottom: 1.5rem;
  text-shadow: 0 0 10px rgba(192,132,252,0.7);
}
#outsourcing p {
  max-width: 720px;
  margin: 0 auto 2rem;
  color: #d0c3f2;
  font-size: 1.1rem;
}
#outsourcing a {
  display: inline-block;
  background: linear-gradient(90deg, #22c55e, #16a34a);
  color: white;
  padding: 1rem 3rem;
  border-radius: 9999px;
  font-weight: 700;
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.6);
  transition: background-color 0.3s ease, transform 0.3s ease;
  text-decoration: none;
}
#outsourcing a:hover {
  background: linear-gradient(90deg, #16a34a, #15803d);
  transform: scale(1.05);
}

/* footer */
footer {
  background: #111827;
  color: #a78bfa;
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.9rem;
}

/* 모바일 반응형 */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.5rem 1rem;
    flex-wrap: wrap;
    gap: 0.3rem;
  }
  header a, header button {
    margin-left: 0 !important;
    margin-top: 0.15rem;
    margin-bottom: 0.15rem;
    font-size: 0.85rem;
    padding: 0.25rem 0.6rem;
  }
  header a:first-child {
    font-size: 1.1rem !important;
  }

  #hero {
    padding: 4rem 1rem 2rem;
  }
  #hero h2 {
    font-size: 2rem;
  }
  #hero p {
    font-size: 1rem;
  }

  #showServicesBtn {
    padding: 0.5rem 1rem !important;
    font-size: 0.9rem !important;
    width: 90% !important;
    max-width: 200px !important;
    margin: 1rem auto !important;
    box-shadow: 0 0 15px rgba(192,132,252,0.6) !important;
  }

  #services .grid {
    grid-template-columns: 1fr !important;
    gap: 1rem !important;
  }
  .service-card {
    padding: 1rem !important;
  }
  .service-title {
    font-size: 1.2rem !important;
  }
  .service-description {
    font-size: 0.95rem !important;
  }

  #outsourcing {
    padding: 3rem 1rem;
  }
  #outsourcing h3 {
    font-size: 1.75rem;
  }
  #outsourcing p {
    font-size: 1rem;
  }
  #outsourcing a {
    padding: 0.8rem 2rem;
    font-size: 0.95rem;
  }
}