html {
  scroll-behavior: smooth;
}

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

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #1a1a1a;
  background-color: #fff;
  line-height: 1.6;
}

/* 헤더 */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 4rem;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  z-index: 1000;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.5rem;
  font-weight: 700;
  color: #F3BC30;
  text-decoration: none;
}

.logo-img {
  height: 32px;
  width: auto;
}

nav a {
  margin-left: 2.5rem;
  text-decoration: none;
  color: #333;
  font-weight: 500;
  font-size: 1rem;
  transition: color 0.3s ease;
}

nav a:hover {
  color: #F3BC30;
}

/* 히어로 섹션 */
.hero-full {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #fdfbf7 0%, #fff 100%);
  text-align: center;
  padding: 8rem 2rem 4rem;
  margin-top: 80px;
}

.hero-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.hero-full h1 {
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 2.5rem;
  color: #1a1a1a;
  letter-spacing: -0.02em;
}

.hero-description {
  font-size: 1.4rem;
  color: #333;
  margin-bottom: 2rem;
  line-height: 1.8;
  font-weight: 500;
}

.hero-sub {
  font-size: 1.1rem;
  color: #666;
  line-height: 1.8;
  margin-bottom: 3rem;
}

.download-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.app-download-button {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  padding: 1.2rem 2.5rem;
  border-radius: 50px;
  font-size: 1.05rem;
  text-decoration: none;
  transition: all 0.3s ease;
  min-width: 180px;
  justify-content: center;
}

.app-download-button.ios {
  background-color: #000;
  color: white;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.app-download-button.ios:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.3);
  background-color: #333;
}

.app-download-button.android {
  background-color: #F3BC30;
  color: white;
  box-shadow: 0 4px 20px rgba(243, 188, 48, 0.3);
}

.app-download-button.android:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 30px rgba(243, 188, 48, 0.4);
  background-color: #e5ad1f;
}

.app-download-button svg {
  flex-shrink: 0;
}

/* 섹션 공통 */
.section {
  padding: 6rem 2rem;
}

.section h2 {
  font-size: 2.2rem;
  text-align: center;
  margin-bottom: 3.5rem;
  font-weight: 700;
  color: #1a1a1a;
}

/* 소개 섹션 */
.about-section {
  background-color: #fafafa;
}

.about-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.about-main {
  font-size: 1.8rem;
  font-weight: 600;
  color: #1a1a1a;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.about-desc {
  font-size: 1.2rem;
  color: #666;
  line-height: 1.8;
}

/* 앱 미리보기 섹션 */
.app-preview-section {
  background-color: #fff;
  padding: 6rem 2rem;
}

.app-preview-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.phone-mockup {
  position: relative;
  max-width: 350px;
  margin: 0 auto;
}

.app-screenshot {
  width: 100%;
  height: auto;
  border-radius: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.app-features-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.feature-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.feature-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #FEF8EA 0%, #FFF9E6 100%);
  border-radius: 16px;
}

.feature-text h4 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 0.5rem;
}

.feature-text p {
  font-size: 1rem;
  color: #666;
  line-height: 1.6;
}

/* 앱 미리보기 섹션 */
.app-preview-section {
  background-color: #fff;
  padding: 6rem 2rem;
}

.app-preview-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 5rem;
  align-items: center;
}

.phone-mockup {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}

.app-screenshot {
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.app-features-list {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.feature-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.feature-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #FEF8EA 0%, #FFF9E6 100%);
  border-radius: 16px;
}

.feature-text h4 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 0.5rem;
}

.feature-text p {
  font-size: 1rem;
  color: #666;
  line-height: 1.6;
}

@media (max-width: 968px) {
  .app-preview-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .phone-mockup {
    max-width: 100%;
  }

  .feature-item {
    gap: 1rem;
  }

  .feature-icon {
    width: 50px;
    height: 50px;
    font-size: 2rem;
  }

  .feature-text h4 {
    font-size: 1.1rem;
  }

  .feature-text p {
    font-size: 0.95rem;
  }
}


.achievements-section {
  background-color: #fff;
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.achievement-card {
  background: linear-gradient(135deg, #FEF8EA 0%, #FFF9E6 100%);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid rgba(243, 188, 48, 0.1);
}

.achievement-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.achievement-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #F3BC30;
  margin-bottom: 1rem;
}

.achievement-card p {
  font-size: 1rem;
  color: #333;
  line-height: 1.6;
}

/* 기능 섹션 */
.features-section {
  background-color: #fafafa;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.feature-box {
  background: white;
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
}

.feature-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.feature-box h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid #F3BC30;
}

.feature-box ul {
  list-style: none;
  padding: 0;
}

.feature-box li {
  font-size: 1rem;
  color: #555;
  padding: 0.6rem 0;
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.6;
}

.feature-box li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #F3BC30;
  font-weight: 700;
  font-size: 1.1rem;
}

/* 공지사항 섹션 */
.notice-section {
  background-color: #FEF8EA;
  padding: 4rem 2rem;
}

.notice-section h2 {
  font-size: 1.8rem;
  text-align: center;
  margin-bottom: 2rem;
  color: #222;
}

.notice-list {
  max-width: 720px;
  margin: 0 auto;
  list-style: none;
  padding: 0;
}

.notice-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 1rem;
  border-bottom: 1px solid #eee;
  text-decoration: none;
  color: #222;
  transition: background-color 0.2s ease;
}

.notice-item:hover {
  background-color: #fff2cf;
}

.notice-title {
  font-size: 1rem;
  font-weight: 600;
  word-break: keep-all;
}

.notice-date {
  font-size: 0.875rem;
  color: #999;
  flex-shrink: 0;
}

.notice-detail {
  max-width: 720px;
  margin: 5rem auto;
  padding: 2rem;
  background-color: #fffef9;
  border-radius: 12px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.05);
}

.notice-detail h1 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.notice-meta {
  font-size: 0.875rem;
  color: #888;
  margin-bottom: 2rem;
}

.notice-content {
  font-size: 1rem;
  line-height: 1.7;
  color: #333;
}

.back-button {
  display: inline-block;
  margin-top: 3rem;
  padding: 0.6rem 1.2rem;
  background-color: white;
  color: #F3BC30;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

/* 문의 섹션 */
.contact-section {
  background: linear-gradient(135deg, #fafafa 0%, #fff 100%);
  padding: 6rem 2rem;
  text-align: center;
}

.contact-container {
  max-width: 700px;
  margin: 0 auto;
}

.contact-section h2 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #1a1a1a;
}

.contact-sub {
  font-size: 1.1rem;
  color: #666;
  margin-bottom: 3rem;
  line-height: 1.6;
}

.contact-box {
  background-color: white;
  padding: 3rem;
  border-radius: 20px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.contact-email-label {
  font-size: 1rem;
  font-weight: 500;
  color: #999;
  margin-bottom: 0.8rem;
}

.contact-email {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 700;
  color: #F3BC30;
  text-decoration: none;
  word-break: break-all;
  transition: color 0.3s ease;
}

.contact-email:hover {
  color: #e5ad1f;
  text-decoration: underline;
}

/* 푸터 */
footer {
  background-color: #505050;
  color: #fff;
  padding: 3rem 2rem;
  font-size: 0.9rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.footer-logo-img {
  height: 32px;
  width: auto;
}

.footer-logo-text {
  font-size: 1.3rem;
  font-weight: 700;
  color: #F3BC30;
}

.footer-info {
  text-align: left;
}

.footer-info p {
  margin: 0.4rem 0;
  line-height: 1.6;
}

.footer-company {
  font-size: 0.95rem;
  margin-bottom: 0.8rem !important;
}

.footer-company strong {
  color: #ddd;
  font-size: 1rem;
}

.footer-detail {
  font-size: 0.85rem;
  color: #ddd;
}

.footer-copyright {
  margin-top: 1rem !important;
  font-size: 0.85rem;
  color: #bbb;
}

@media (max-width: 768px) {
  .footer-info p {
    font-size: 0.8rem;
  }
  
  .footer-company {
    font-size: 0.9rem;
  }
}

/* 반응형 */
@media (max-width: 768px) {
  header {
    padding: 1rem 1.5rem;
  }

  nav a {
    margin-left: 1.2rem;
    font-size: 0.9rem;
  }

  .hero-full {
    padding: 6rem 1.5rem 3rem;
  }

  .hero-full h1 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
  }

  .hero-description {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
  }

  .download-buttons {
    flex-direction: column;
    align-items: center;
  }

  .app-download-button {
    width: 100%;
    max-width: 280px;
  }

  .section {
    padding: 4rem 1.5rem;
  }

  .section h2 {
    font-size: 1.6rem;
    margin-bottom: 2.5rem;
  }

  .about-main {
    font-size: 1.3rem;
  }

  .about-desc {
    font-size: 1rem;
  }

  .achievements-grid,
  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .notice-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .notice-date {
    margin-left: 0;
  }
}

/* AOS 애니메이션 */
[data-aos] {
  opacity: 0;
  transition-property: opacity, transform;
}

[data-aos].aos-animate {
  opacity: 1;
}