/* ===== 기본 리셋 ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Noto Sans KR', sans-serif; color: #1a202c; line-height: 1.6; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ===== 공통 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.25s;
  cursor: pointer;
  border: 2px solid transparent;
}
.btn-primary { background: #00c2cb; color: #0f1923; }
.btn-primary:hover { background: #00a8b0; }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.btn-outline:hover { background: #fff; color: #0f1923; border-color: #fff; }
.btn-outline-dark { background: transparent; color: #00c2cb; border: 2px solid #00c2cb; }
.btn-outline-dark:hover { background: #00c2cb; color: #0f1923; }
.btn-full { width: 100%; text-align: center; }

.section-header { text-align: center; margin-bottom: 4rem; }
.section-label { font-size: 0.8rem; font-weight: 700; letter-spacing: 3px; color: #00c2cb; margin-bottom: 0.75rem; display: block; }
.section-header h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 1rem; }
.section-desc { color: #64748b; font-size: 1rem; }

/* ===== 헤더 ===== */
.header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(15, 25, 35, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: all 0.3s;
}
.header.scrolled {
  background: rgba(15, 25, 35, 0.99);
  box-shadow: 0 2px 24px rgba(0,0,0,0.35);
}
.nav { max-width: 1200px; margin: 0 auto; padding: 1rem 2rem; display: flex; align-items: center; justify-content: space-between; }
.logo-main { display: block; font-size: 1.25rem; font-weight: 800; color: #fff; letter-spacing: -0.5px; }
.logo-sub { display: block; font-size: 0.65rem; font-weight: 400; color: #67e8f0; letter-spacing: 2px; margin-top: 2px; }
.nav-list { display: flex; gap: 0.25rem; align-items: center; }
.nav-list a { padding: 0.5rem 1rem; color: rgba(255,255,255,0.75); font-size: 0.9rem; font-weight: 500; border-radius: 4px; transition: all 0.2s; }
.nav-list a:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-cta { background: #00c2cb !important; color: #0f1923 !important; font-weight: 700 !important; }
.nav-cta:hover { background: #00a8b0 !important; color: #fff !important; }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: all 0.3s; }

/* ===== 히어로 ===== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  padding: 8rem 2rem 6rem; text-align: center; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #0f1923 0%, #0d2233 45%, #0a1e30 70%, #080f18 100%);
}
.hero-bg::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 65% 35%, rgba(0,194,203,0.12) 0%, transparent 55%);
}
.hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 70%, rgba(0,150,200,0.08) 0%, transparent 50%);
}
.hero-content { position: relative; z-index: 2; max-width: 820px; }
.hero-label {
  display: inline-block;
  font-size: 0.8rem; font-weight: 700; letter-spacing: 3px; color: #67e8f0;
  border: 1px solid rgba(103,232,240,0.3);
  padding: 0.4rem 1rem; border-radius: 20px; margin-bottom: 1.75rem;
  background: rgba(0,194,203,0.08);
}
.hero h1 { font-size: 3.5rem; font-weight: 900; color: #fff; line-height: 1.2; margin-bottom: 1.5rem; }
.hero h1 span { color: #00c2cb; }
.hero-desc { font-size: 1.05rem; color: rgba(255,255,255,0.6); margin-bottom: 2.5rem; line-height: 1.9; }
.hero-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-stats {
  position: relative; z-index: 2; width: 100%; max-width: 820px;
  display: grid; grid-template-columns: repeat(4, 1fr);
  margin-top: 5rem; border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 2.5rem; gap: 1rem;
}
.stat { text-align: center; }
.stat strong { display: block; font-size: 1.6rem; font-weight: 800; color: #00c2cb; }
.stat span { font-size: 0.78rem; color: rgba(255,255,255,0.45); margin-top: 0.25rem; display: block; }

/* ===== 사업분야 ===== */
.business { padding: 7rem 0; background: #f4f7fb; }
.business-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.business-card {
  background: #fff; padding: 2.5rem 1.75rem; border-radius: 12px;
  border: 1px solid #e2e8f0; text-align: center; transition: all 0.3s;
}
.business-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0,194,203,0.1);
  border-color: #00c2cb;
}
.biz-icon { font-size: 2.5rem; margin-bottom: 1.25rem; }
.business-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.75rem; color: #0f1923; }
.business-card p { font-size: 0.88rem; color: #64748b; line-height: 1.75; }

/* ===== 제품소개 ===== */
.products { padding: 7rem 0; background: #f4f7fb; }
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.75rem; }

.product-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s;
  position: relative;
}
.product-card::before {
  content: '';
  display: block;
  height: 4px;
  background: linear-gradient(90deg, #00c2cb, #0096b0);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0,194,203,0.15);
  border-color: #00c2cb;
}
.product-img-placeholder {
  width: 100%; height: 160px;
  background: linear-gradient(135deg, #eaf9fa, #cdf0f3);
  display: flex; align-items: center; justify-content: center;
}
.product-img-placeholder .p-icon {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, #00c2cb, #0096b0);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
  box-shadow: 0 6px 20px rgba(0,194,203,0.35);
}
.product-card img { width: 100%; height: 160px; object-fit: cover; }
.product-body { padding: 1.6rem; }
.product-body h3 { font-size: 1.05rem; font-weight: 800; color: #0f1923; margin-bottom: 0.6rem; }
.product-body p { font-size: 0.88rem; color: #64748b; line-height: 1.75; margin-bottom: 1.1rem; }
.product-tag {
  display: inline-block;
  background: #0f1923;
  color: #67e8f0;
  font-size: 0.75rem; font-weight: 700;
  padding: 0.25rem 0.75rem; border-radius: 20px;
  letter-spacing: 0.5px;
}

/* ===== 회사소개 ===== */
.about { padding: 7rem 0; background: #fff; }
.about-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
.about-text h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 1.5rem; color: #0f1923; }
.about-desc { color: #4a5568; font-size: 1rem; line-height: 1.9; margin-bottom: 2rem; }
.about-info { border-top: 1px solid #e8edf4; padding-top: 1.5rem; display: flex; flex-direction: column; gap: 0.85rem; }
.info-row { display: flex; gap: 1.5rem; font-size: 0.9rem; align-items: flex-start; }
.info-label { font-weight: 700; color: #00c2cb; min-width: 80px; flex-shrink: 0; }
.info-value { color: #2d3748; }
.about-img img { width: 100%; border-radius: 12px; height: 420px; object-fit: cover; }
.about-img-placeholder {
  width: 100%; height: 420px; border-radius: 12px;
  background: linear-gradient(135deg, #e8f4f8, #c5e8ed);
  display: flex; align-items: center; justify-content: center;
  font-size: 5rem;
}

/* ===== 문의 ===== */
.contact { padding: 7rem 0; background: #f4f7fb; }
.contact-wrap { display: grid; grid-template-columns: 1.3fr 1fr; gap: 4rem; align-items: start; }
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.contact-form input,
.contact-form select,
.contact-form textarea {
  padding: 0.9rem 1.1rem;
  border: 1.5px solid #dde6ee;
  border-radius: 6px;
  font-family: inherit; font-size: 0.92rem; color: #1a202c;
  background: #fff; transition: border 0.2s; width: 100%;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus { outline: none; border-color: #00c2cb; box-shadow: 0 0 0 3px rgba(0,194,203,0.1); }
.contact-form textarea { height: 150px; resize: vertical; }
.contact-info h3 { font-size: 1.4rem; font-weight: 800; color: #0f1923; margin-bottom: 1.5rem; }
.contact-detail { display: flex; flex-direction: column; gap: 1rem; margin-bottom: 2rem; }
.contact-item { display: flex; align-items: flex-start; gap: 0.75rem; font-size: 0.95rem; color: #4a5568; }
.ci-icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 1px; }

/* ===== 푸터 ===== */
.footer { background: #080f18; color: rgba(255,255,255,0.55); padding: 3rem 0 2rem; }
.footer-top {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 1.5rem; border-bottom: 1px solid rgba(255,255,255,0.08); margin-bottom: 1.5rem;
}
.footer-logo { font-size: 1.15rem; font-weight: 800; color: #fff; }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { font-size: 0.85rem; color: rgba(255,255,255,0.5); transition: color 0.2s; }
.footer-links a:hover { color: #67e8f0; }
.footer-bottom p { font-size: 0.82rem; margin-bottom: 0.4rem; }
.footer-copy { color: rgba(255,255,255,0.25); }

/* ===== 퀵 버튼 ===== */
.quick-contact {
  position: fixed; right: 1.5rem; bottom: 2rem; z-index: 900;
  background: #00c2cb; color: #0f1923;
  width: 56px; height: 56px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.68rem; font-weight: 800; text-align: center;
  box-shadow: 0 4px 24px rgba(0,194,203,0.45);
  transition: transform 0.2s, box-shadow 0.2s;
}
.quick-contact:hover { transform: scale(1.12); box-shadow: 0 6px 32px rgba(0,194,203,0.6); }

/* ===== 반응형 ===== */
@media (max-width: 1024px) {
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-list {
    display: none; position: fixed; top: 64px; left: 0; width: 100%;
    flex-direction: column; background: #0f1923;
    padding: 1rem; border-bottom: 1px solid rgba(255,255,255,0.08); gap: 0.25rem;
  }
  .nav-list.open { display: flex; }
  .nav-list a { padding: 0.75rem 1rem; display: block; }
  .hero h1 { font-size: 2.3rem; }
  .about-wrap { grid-template-columns: 1fr; gap: 2rem; }
  .about-img { order: -1; }
  .contact-wrap { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; gap: 1.5rem; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}
@media (max-width: 480px) {
  .business-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.9rem; }
}