/* ============================================
   메인 페이지 스타일
   ============================================ */

/* CSS 변수 정의 */
:root {
  --manna-primary: #4CAF50;
  --manna-secondary: #00B6DE;
  --manna-accent: #FFC20E;
  --manna-dark: #2E2E2E;
  --manna-light: #F8F9FA;
  --manna-gradient-1: linear-gradient(135deg, #4CAF50 0%, #00B6DE 100%);
  --manna-gradient-2: linear-gradient(135deg, #00B6DE 0%, #FFC20E 100%);
  --manna-gradient-3: linear-gradient(135deg, #FFC20E 0%, #FF6B6B 100%);
  --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-medium: 0 8px 25px rgba(0, 0, 0, 0.1);
  --shadow-strong: 0 15px 35px rgba(0, 0, 0, 0.15);
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   히어로 섹션
   ============================================ */
.hero-section {
  background: var(--manna-gradient-1);
  min-height: 60vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 3rem 0;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  color: white;
  margin-bottom: 1rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
  font-size: 1.3rem;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.highlight-green {
  color: #A8E6A3;
  font-weight: 600;
}

.highlight-cyan {
  color: #87CEEB;
  font-weight: 600;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-hero-primary,
.btn-hero-secondary {
  padding: 0.8rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: var(--transition);
  border: none;
  min-width: 150px;
}

.btn-hero-primary {
  background: white;
  color: var(--manna-primary);
  box-shadow: var(--shadow-medium);
}

.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-strong);
  color: var(--manna-primary);
}

.btn-hero-secondary {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-hero-secondary:hover {
  background: white;
  color: var(--manna-primary);
  transform: translateY(-2px);
}

/* 히어로 장식 요소 */
.hero-decoration {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.floating-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

.shape-1 {
  width: 120px;
  height: 120px;
  background: white;
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 80px;
  height: 80px;
  background: white;
  top: 60%;
  right: 15%;
  animation-delay: 2s;
}

.shape-3 {
  width: 100px;
  height: 100px;
  background: white;
  bottom: 20%;
  left: 20%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

/* ============================================
   기능 섹션
   ============================================ */
.features-section {
  padding: 6rem 0;
  background: var(--manna-light);
}

.feature-card {
  background: white;
  border-radius: var(--border-radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-light);
  transition: var(--transition);
  height: 100%;
  border: none;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--manna-gradient-1);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-strong);
}

.feature-card.card-share::before {
  background: var(--manna-gradient-2);
}

.feature-card.card-analyze::before {
  background: var(--manna-gradient-3);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  position: relative;
}

.card-create .feature-icon {
  background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(76, 175, 80, 0.2) 100%);
  color: var(--manna-primary);
}

.card-share .feature-icon {
  background: linear-gradient(135deg, rgba(0, 182, 222, 0.1) 0%, rgba(0, 182, 222, 0.2) 100%);
  color: var(--manna-secondary);
}

.card-analyze .feature-icon {
  background: linear-gradient(135deg, rgba(255, 194, 14, 0.1) 0%, rgba(255, 194, 14, 0.2) 100%);
  color: var(--manna-accent);
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--manna-dark);
  margin-bottom: 1rem;
}

.feature-description {
  color: #666;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.feature-link {
  color: var(--manna-primary);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.feature-link:hover {
  color: var(--manna-secondary);
  transform: translateX(5px);
}

.card-share .feature-link:hover {
  color: var(--manna-accent);
}

.card-analyze .feature-link:hover {
  color: var(--manna-primary);
}

/* ============================================
   최근 폼 섹션
   ============================================ */
.recent-forms-section {
  padding: 6rem 0;
  background: white;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--manna-dark);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.2rem;
  color: #666;
  max-width: 600px;
  margin: 0 auto;
}

.form-card {
  background: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-light);
  transition: var(--transition);
  overflow: hidden;
  height: 100%;
  position: relative;
}

.form-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.form-card-header {
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 1px solid #f0f0f0;
  position: relative;
}

.form-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.form-card-green::before {
  background: var(--manna-gradient-1);
}

.form-card-cyan::before {
  background: var(--manna-gradient-2);
}

.form-card-yellow::before {
  background: var(--manna-gradient-3);
}

.form-card-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--manna-dark);
  margin: 0;
  flex: 1;
  line-height: 1.4;
}

.form-share-btn {
  background: none;
  border: none;
  color: #999;
  font-size: 1.1rem;
  padding: 0.5rem;
  border-radius: 50%;
  transition: var(--transition);
  margin-left: 1rem;
}

.form-share-btn:hover {
  background: rgba(76, 175, 80, 0.1);
  color: var(--manna-primary);
}

.form-card-body {
  padding: 1.5rem;
  flex: 1;
}

.form-card-description {
  color: #666;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.form-card-meta {
  margin-bottom: 1rem;
}

.form-card-date {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #999;
  font-size: 0.9rem;
}

.form-card-footer {
  padding: 0 1.5rem 1.5rem;
}

.btn-form-view {
  width: 100%;
  padding: 0.8rem;
  background: var(--manna-primary);
  color: white;
  text-decoration: none;
  border-radius: var(--border-radius);
  text-align: center;
  font-weight: 600;
  transition: var(--transition);
  border: none;
}

.btn-form-view:hover {
  background: var(--manna-secondary);
  color: white;
  transform: translateY(-1px);
}

/* 빈 상태 */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: #999;
}

.empty-state i {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  color: #ddd;
}

.empty-state h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #666;
}

/* ============================================
   CTA 섹션
   ============================================ */
.cta-section {
  padding: 6rem 0;
  background: var(--manna-light);
}

.cta-card {
  background: white;
  border-radius: var(--border-radius-lg);
  padding: 4rem 3rem;
  box-shadow: var(--shadow-medium);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--manna-gradient-1);
}

.cta-content {
  flex: 1;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--manna-dark);
  margin-bottom: 1rem;
}

.cta-description {
  font-size: 1.2rem;
  color: #666;
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-cta-primary,
.btn-cta-secondary {
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: var(--transition);
  border: none;
  min-width: 140px;
  text-align: center;
}

.btn-cta-primary {
  background: var(--manna-gradient-1);
  color: white;
  box-shadow: var(--shadow-light);
}

.btn-cta-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
  color: white;
}

.btn-cta-secondary {
  background: transparent;
  color: var(--manna-primary);
  border: 2px solid var(--manna-primary);
}

.btn-cta-secondary:hover {
  background: var(--manna-primary);
  color: white;
  transform: translateY(-2px);
}

.cta-decoration {
  flex-shrink: 0;
}

.cta-icon {
  width: 100px;
  height: 100px;
  background: var(--manna-gradient-1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: white;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* ============================================
   공유 모달
   ============================================ */
.share-modal .modal-content {
  border: none;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-strong);
}

.share-modal-header {
  background: var(--manna-gradient-1);
  color: white;
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
  padding: 1.5rem 2rem;
  border-bottom: none;
}

.share-modal-header .modal-title {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 600;
}

.share-modal-header .btn-close {
  filter: invert(1);
  opacity: 0.8;
}

.share-modal-body {
  padding: 2rem;
}

.share-url-section,
.share-social-section {
  margin-bottom: 2rem;
}

.share-social-section:last-child {
  margin-bottom: 0;
}

.share-label {
  display: block;
  font-weight: 600;
  color: var(--manna-dark);
  margin-bottom: 1rem;
}

.share-url-group {
  display: flex;
  gap: 0.5rem;
}

.share-url-input {
  flex: 1;
  padding: 0.8rem 1rem;
  border: 2px solid #e0e0e0;
  border-radius: var(--border-radius);
  font-size: 0.9rem;
  background: #f8f9fa;
}

.btn-copy {
  padding: 0.8rem 1.5rem;
  background: var(--manna-primary);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-copy:hover {
  background: var(--manna-secondary);
  transform: translateY(-1px);
}

.share-social-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.share-social-btn {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem 1.5rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  flex: 1;
  min-width: 120px;
  justify-content: center;
}

.share-social-btn.facebook {
  background: #1877F2;
  color: white;
}

.share-social-btn.twitter {
  background: #1DA1F2;
  color: white;
}

.share-social-btn.kakao {
  background: #FEE500;
  color: #000;
}

.share-social-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-light);
  color: inherit;
}

/* ============================================
   반응형 디자인
   ============================================ */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn-hero-primary,
  .btn-hero-secondary {
    width: 100%;
    max-width: 250px;
  }
  
  .features-section {
    padding: 4rem 0;
  }
  
  .feature-card {
    padding: 2rem 1.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .cta-card {
    padding: 3rem 2rem;
    flex-direction: column;
    text-align: center;
  }
  
  .cta-title {
    font-size: 2rem;
  }
  
  .cta-buttons {
    justify-content: center;
  }
  
  .share-social-buttons {
    flex-direction: column;
  }
  
  .share-social-btn {
    min-width: auto;
  }
}

@media (max-width: 576px) {
  .hero-section {
    min-height: 50vh;
    padding: 2rem 0;
  }
  
  .hero-title {
    font-size: 1.8rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .share-url-group {
    flex-direction: column;
  }
  
  .btn-copy {
    justify-content: center;
  }
}