@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;700&display=swap");

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  background: #f8f9fa;
  color: #232a33;
  line-height: 1.7;
  font-size: 1.05rem;
}

html {
  scroll-behavior: smooth;
}

/* Header & Navigation */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.7rem 2rem;
}

nav img {
  height: 44px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2.2rem;
  align-items: center;
}

nav a {
  text-decoration: none;
  color: #232a33;
  font-weight: 700;
  font-size: 1.1rem;
  position: relative;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  height: 44px;
}
nav a::after {
  content: "";
  display: block;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, #1976d2 60%, #43a047 100%);
  border-radius: 2px;
  transition: width 0.3s;
  position: absolute;
  left: 0;
  bottom: -6px;
}
nav a:hover {
  color: #1976d2;
}
nav a:hover::after {
  width: 100%;
}

/* Hero Section */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 340px;
  background: linear-gradient(120deg, #e3f0fc 60%, #f8f9fa 100%);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(25, 118, 210, 0.07);
  margin-bottom: 24px;
}
.hero img {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.85) saturate(1.1);
  opacity: 0.92;
  z-index: 0;
}
.hero-text {
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.82);
  padding: 2.2rem 2.5rem;
  border-radius: 18px;
  box-shadow: 0 2px 16px rgba(25, 118, 210, 0.08);
  color: #1976d2;
  animation: fadeInUp 1.1s cubic-bezier(0.23, 1.01, 0.32, 1) 0.1s both;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  max-width: 90vw;
}
.hero-text h1 {
  font-size: 2.7rem;
  font-weight: 900;
  margin-bottom: 0.7rem;
  color: #1976d2;
  letter-spacing: -1px;
}
.hero-text p {
  font-size: 1.25rem;
  color: #232a33;
  font-weight: 600;
}

/* Features Section */
.features {
  padding: 3.5rem 2rem 2.5rem 2rem;
  text-align: center;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 2px 16px rgba(25, 118, 210, 0.07);
  margin: 32px auto 0 auto;
  max-width: 1200px;
  animation: fadeIn 1.2s cubic-bezier(0.23, 1.01, 0.32, 1) 0.2s both;
}
.features h2 {
  font-size: 2.1rem;
  margin-bottom: 2.2rem;
  color: #1976d2;
  font-weight: 900;
}
.feature-items {
  display: flex;
  justify-content: space-around;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.feature-item {
  flex-basis: 30%;
  background: #f8f9fa;
  border-radius: 14px;
  box-shadow: 0 2px 12px rgba(67, 160, 71, 0.07);
  padding: 2rem 1.2rem 1.5rem 1.2rem;
  margin-bottom: 1.5rem;
  transition: transform 0.25s, box-shadow 0.25s;
  cursor: pointer;
}
.feature-item:hover {
  transform: scale(1.045);
  box-shadow: 0 6px 24px rgba(25, 118, 210, 0.13);
}
.feature-item h3 {
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
  color: #43a047;
  font-weight: 700;
}
.feature-item p {
  color: #232a33;
  font-size: 1.05rem;
}

/* Company Intro Section */
.company-intro {
  background: linear-gradient(90deg, #e3f0fc 60%, #f8f9fa 100%);
  margin: 32px 0;
  padding: 32px 24px;
  border-radius: 16px;
  box-shadow: 0 2px 16px rgba(25, 118, 210, 0.07);
  text-align: center;
  animation: fadeIn 1.2s cubic-bezier(0.23, 1.01, 0.32, 1) 0.3s both;
}
.company-intro p {
  font-size: 1.13rem;
  color: #232a33;
  margin-bottom: 10px;
}
.company-intro p:first-child {
  font-size: 1.18rem;
  font-weight: 700;
  color: #1976d2;
}
.company-intro p[style*="font-weight: 600"] {
  color: #1976d2 !important;
}

/* Gallery Section */
.gallery {
  padding: 3.5rem 2rem 2.5rem 2rem;
  background: #fff;
  text-align: center;
  border-radius: 18px;
  box-shadow: 0 2px 16px rgba(25, 118, 210, 0.07);
  margin: 32px auto 0 auto;
  max-width: 1200px;
  animation: fadeIn 1.2s cubic-bezier(0.23, 1.01, 0.32, 1) 0.4s both;
}
.gallery h2 {
  font-size: 2.1rem;
  margin-bottom: 2.2rem;
  color: #1976d2;
  font-weight: 900;
}
.gallery-items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
}
.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  box-shadow: 0 2px 12px rgba(25, 118, 210, 0.07);
  transition: transform 0.25s, box-shadow 0.25s;
  cursor: pointer;
}
.gallery-item:hover {
  transform: scale(1.045);
  box-shadow: 0 6px 24px rgba(25, 118, 210, 0.13);
}
.gallery-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 14px;
  transition: filter 0.3s;
}
.gallery-item:hover img {
  filter: brightness(0.92) blur(1px);
}
.gallery-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(1);
  background: linear-gradient(90deg, #1976d2 60%, #43a047 100%);
  color: #fff;
  padding: 0.8em 2em;
  border-radius: 2em;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  pointer-events: none;
  white-space: nowrap;
  opacity: 0.92;
  transition: background 0.3s, transform 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.gallery-item:hover .gallery-overlay {
  background: linear-gradient(90deg, #43a047 60%, #1976d2 100%);
  transform: translate(-50%, -50%) scale(1.08);
}

/* Contact Section */
.contact {
  padding: 3.5rem 2rem 2.5rem 2rem;
  text-align: center;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 2px 16px rgba(25, 118, 210, 0.07);
  margin: 32px auto 0 auto;
  max-width: 1200px;
  animation: fadeIn 1.2s cubic-bezier(0.23, 1.01, 0.32, 1) 0.5s both;
}
.contact h2 {
  font-size: 2.1rem;
  margin-bottom: 2.2rem;
  color: #1976d2;
  font-weight: 900;
}
.contact-call-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin: 32px auto 0 auto;
  width: 90%;
  max-width: 600px;
  background: #f8f9fa;
  border: 2px solid #e3f0fc;
  border-radius: 24px;
  padding: 22px 0;
  font-size: 1.35rem;
  font-weight: 700;
  color: #1976d2;
  text-decoration: none;
  gap: 16px;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 8px rgba(25, 118, 210, 0.04);
}
.contact-call-btn:hover {
  background: #1976d2;
  color: #fff;
  box-shadow: 0 6px 24px rgba(25, 118, 210, 0.13);
}
.contact-call-icon img,
.contact-call-icon {
  width: 36px;
  height: 36px;
  vertical-align: middle;
}
.contact-phone-icon {
  font-size: 2rem;
  color: #43a047;
}
.contact-phone-label {
  margin-left: 8px;
  font-size: 1.1rem;
}
.contact-phone-number {
  margin-left: 8px;
  font-weight: 900;
  color: #1976d2;
}

/* Footer */
footer {
  background: #232a33;
  color: #eee;
  text-align: center;
  padding: 2.2rem 1rem 1.2rem 1rem;
  font-size: 1rem;
  margin-top: 48px;
  border-radius: 18px 18px 0 0;
  box-shadow: 0 -2px 16px rgba(25, 118, 210, 0.07);
}
footer p {
  margin-bottom: 0.5rem;
  color: #eee;
}

/* Animation */
@keyframes fadeIn {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }
  100% {
    opacity: 1;
    transform: none;
  }
}
@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(60px);
  }
  100% {
    opacity: 1;
    transform: none;
  }
}

/* Responsive */
@media (max-width: 900px) {
  .feature-items {
    flex-direction: column;
    gap: 1.5rem;
  }
  .gallery-items {
    grid-template-columns: 1fr;
  }
  nav {
    padding: 0.7rem 1rem;
  }
}
@media (max-width: 600px) {
  .hero img {
    height: 180px;
  }
  .hero-text {
    padding: 1.1rem 0.7rem;
    font-size: 1rem;
  }
  .features,
  .gallery,
  .contact,
  .company-intro {
    padding: 1.2rem 0.5rem;
    border-radius: 10px;
  }
  .gallery-item img {
    height: 120px;
  }
  .contact-call-btn {
    font-size: 1rem;
    padding: 12px 0;
  }
  footer {
    font-size: 0.92rem;
    padding: 1.2rem 0.5rem 0.7rem 0.5rem;
    border-radius: 10px 10px 0 0;
  }
}

/* Case Detail Page (시공사례 상세) */
.case-detail {
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 2px 16px rgba(25, 118, 210, 0.07);
  max-width: 900px;
  margin: 40px auto 0 auto;
  padding: 2.5rem 1.5rem 2rem 1.5rem;
  animation: fadeIn 1.1s cubic-bezier(0.23, 1.01, 0.32, 1) 0.2s both;
}
.case-detail h2 {
  text-align: center;
  font-size: 2.1rem;
  margin-bottom: 2rem;
  color: #1976d2;
  font-weight: 900;
}
.case-content {
  line-height: 1.8;
  margin-bottom: 2.2rem;
}
.case-content p {
  margin: 0.7rem 0 0.3rem 0;
  color: #232a33;
  font-size: 1.08rem;
}
.case-detail img {
  width: 100%;
  margin: 1.2rem 0 0.5rem 0;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(25, 118, 210, 0.08);
  object-fit: cover;
  max-height: 900px;
  background: #f8f9fa;
  display: block;
}
.back-to-list {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin-top: 1.5rem;
  padding: 0.9rem 2.1rem;
  background: linear-gradient(90deg, #1976d2 60%, #43a047 100%);
  color: #fff;
  text-decoration: none;
  border-radius: 24px;
  font-weight: 700;
  font-size: 1.08rem;
  box-shadow: 0 2px 8px rgba(25, 118, 210, 0.07);
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}
.back-to-list:hover {
  background: linear-gradient(90deg, #43a047 60%, #1976d2 100%);
  color: #fff;
  box-shadow: 0 6px 24px rgba(25, 118, 210, 0.13);
}
@media (max-width: 900px) {
  .case-detail {
    padding: 1.2rem 0.5rem 1.2rem 0.5rem;
    border-radius: 10px;
  }
  .case-detail img {
    max-height: 540px;
    border-radius: 8px;
  }
}