/* ====================
   FOOTBALL THEME - MODERN DESIGN ENHANCEMENTS
   세련되고 프리미엄한 축구 테마 디자인
   ==================== */

/* 1. 전역 CSS 변수 - 모던 컬러 팔레트 */
:root {
  /* 메인 컬러 - 역동적인 그라데이션 */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  --primary-color: #667eea;
  --primary-dark: #5568d3;
  --accent-color: #ff6b35;
  --accent-hover: #ff8c61;
  
  /* 뉴트럴 컬러 */
  --dark-bg: #1a1d2e;
  --light-bg: #f8f9fa;
  --white: #ffffff;
  --text-dark: #2d3436;
  --text-light: #636e72;
  
  /* 글래스모피즘 */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  
  /* 그림자 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.2);
  
  /* 간격 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* 반경 */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  
  /* 애니메이션 */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. 히어로 섹션 - 슈퍼 임팩트 디자인 */
.hero-section {
  background: var(--primary-gradient);
  position: relative;
  overflow: hidden;
  padding: 100px 0 80px;
  min-height: 85vh;
}

/* 애니메이티드 배경 그라데이션 */
.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(255, 107, 53, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.3) 0%, transparent 50%);
  animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(50px, -30px) scale(1.1); }
}

/* 히어로 타이틀 - 더 강렬하게 */
.hero-title {
  font-size: clamp(3rem, 8vw, 5.5rem) !important;
  font-weight: 900 !important;
  line-height: 1.1 !important;
  margin-bottom: 1.5rem !important;
  background: linear-gradient(135deg, #fff 0%, #ffd700 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none !important;
  letter-spacing: -0.03em !important;
  animation: titleFadeIn 0.8s ease-out;
}

@keyframes titleFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-subtitle {
  font-size: clamp(1.5rem, 4vw, 2.5rem) !important;
  font-weight: 700 !important;
  color: #ffd700 !important;
  margin-bottom: 1.5rem !important;
  text-shadow: 0 2px 20px rgba(255, 215, 0, 0.4) !important;
  animation: titleFadeIn 0.8s ease-out 0.2s both;
}

.hero-description {
  font-size: clamp(1.1rem, 2vw, 1.4rem) !important;
  line-height: 1.8 !important;
  color: rgba(255, 255, 255, 0.95) !important;
  max-width: 600px;
  animation: titleFadeIn 0.8s ease-out 0.4s both;
}

/* CTA 버튼 - 프리미엄 스타일 */
.cta-buttons .btn {
  padding: 16px 40px !important;
  font-size: 1.1rem !important;
  font-weight: 600 !important;
  border-radius: var(--radius-md) !important;
  transition: all var(--transition-base) !important;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.cta-buttons .btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.cta-buttons .btn:hover::before {
  width: 300px;
  height: 300px;
}

.cta-buttons .btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.25) !important;
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 255, 255, 0.3) !important;
  color: white !important;
}

.btn-tertiary {
  background: linear-gradient(135deg, #ff6b35 0%, #ff8c61 100%) !important;
  border: none !important;
  color: white !important;
}

.btn-quaternary {
  background: rgba(255, 215, 0, 0.2) !important;
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 215, 0, 0.4) !important;
  color: #ffd700 !important;
}

/* 3. 섹션 타이틀 - 모던 스타일 */
.section-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem) !important;
  font-weight: 900 !important;
  text-align: center;
  margin-bottom: var(--spacing-lg) !important;
  position: relative;
  padding-bottom: 20px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 5px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: 10px;
}

/* 4. 선수 카드 - 글래스모피즘 디자인 */
.players-section {
  background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 100%);
  padding: var(--spacing-xl) 0;
}

.players-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-md);
  padding: 0 20px;
}

.player-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
  border: 1px solid rgba(102, 126, 234, 0.1);
}

.player-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.player-card:hover::before {
  transform: scaleX(1);
}

.player-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.player-image {
  position: relative;
  overflow: hidden;
  height: 300px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.player-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.player-card:hover .player-image img {
  transform: scale(1.1);
}

.player-content {
  padding: var(--spacing-md);
}

.player-name {
  font-size: 1.8rem !important;
  font-weight: 800 !important;
  color: var(--text-dark) !important;
  margin-bottom: var(--spacing-xs) !important;
}

.player-position {
  display: inline-block;
  background: var(--primary-gradient);
  color: white;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.player-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
  padding: var(--spacing-md);
  background: #f8f9fa;
  border-radius: var(--radius-sm);
}

.stat {
  text-align: center;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 4px;
}

.stat-value {
  display: block;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-color);
}

.player-description {
  color: var(--text-light) !important;
  line-height: 1.7 !important;
  margin: var(--spacing-md) 0 !important;
}

/* 5. 전략 카드 - 프리미엄 스타일 */
.teams-section {
  background: var(--dark-bg);
  padding: var(--spacing-xl) 0;
  color: white;
}

.teams-section .section-title {
  color: white;
}

.teams-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-md);
  padding: 0 20px;
}

.team-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.team-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-color);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(255, 107, 53, 0.2);
}

.team-logo {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.team-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.team-card:hover .team-logo img {
  transform: scale(1.15);
}

.team-content {
  padding: var(--spacing-md);
}

.team-name {
  font-size: 1.6rem !important;
  font-weight: 700 !important;
  color: white !important;
  margin-bottom: var(--spacing-xs) !important;
}

.team-league {
  color: var(--accent-color) !important;
  font-weight: 600 !important;
  margin-bottom: var(--spacing-md) !important;
}

.team-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
  padding: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
}

.info-item {
  text-align: center;
}

.info-label {
  display: block;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 4px;
}

.info-value {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: white;
}

/* 6. 대회 섹션 - 미니멀 엘레강스 */
.competitions-section {
  background: white;
  padding: var(--spacing-xl) 0;
}

.competitions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-md);
  padding: 0 20px;
}

.competition-card {
  display: flex;
  gap: var(--spacing-md);
  background: white;
  border: 2px solid #f0f0f0;
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: all var(--transition-base);
}

.competition-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-lg);
  transform: translateX(8px);
}

.competition-date {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  background: var(--primary-gradient);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-md);
}

.competition-date .month {
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0.9;
}

.competition-date .day {
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
}

.competition-content h3 {
  font-size: 1.5rem !important;
  font-weight: 700 !important;
  color: var(--text-dark) !important;
  margin-bottom: var(--spacing-xs) !important;
}

.competition-location {
  color: var(--text-light) !important;
  font-weight: 500 !important;
  margin-bottom: var(--spacing-sm) !important;
  display: flex;
  align-items: center;
  gap: 6px;
}

.competition-location::before {
  content: '📍';
}

/* 7. 슬로건 섹션 - 임팩트 */
.slogan-section {
  background: var(--primary-gradient);
  padding: var(--spacing-xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.slogan-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: pattern-float 20s linear infinite;
}

@keyframes pattern-float {
  from {
    transform: translate(0, 0);
  }
  to {
    transform: translate(50px, 50px);
  }
}

.slogan {
  font-size: clamp(2rem, 5vw, 4rem) !important;
  font-weight: 900 !important;
  color: white !important;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2) !important;
  position: relative;
  z-index: 1;
}

/* 8. 버튼 공통 스타일 개선 */
.btn-outline {
  background: white !important;
  color: var(--primary-color) !important;
  border: 2px solid var(--primary-color) !important;
  padding: 12px 30px !important;
  border-radius: var(--radius-md) !important;
  font-weight: 600 !important;
  transition: all var(--transition-base) !important;
  position: relative;
  overflow: hidden;
}

.btn-outline::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--primary-gradient);
  transition: left var(--transition-slow);
  z-index: -1;
}

.btn-outline:hover::before {
  left: 0;
}

.btn-outline:hover {
  color: white !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-primary {
  background: var(--primary-gradient) !important;
  color: white !important;
  border: none !important;
  padding: 16px 40px !important;
  border-radius: var(--radius-md) !important;
  font-weight: 700 !important;
  font-size: 1.1rem !important;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base) !important;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

/* 9. 스크롤 애니메이션 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* 10. 섹션 간격 조정 */
section {
  scroll-margin-top: 140px; /* 헤더 + 네비게이션 높이 */
}

.section-footer {
  text-align: center;
  margin-top: var(--spacing-lg);
}

/* 11. 반응형 개선 */
@media (max-width: 768px) {
  :root {
    --spacing-lg: 2.5rem;
    --spacing-xl: 3.5rem;
  }
  
  .hero-section {
    padding: 60px 0 40px;
  }
  
  .hero-content {
    grid-template-columns: 1fr !important;
    gap: var(--spacing-md) !important;
  }
  
  .players-grid,
  .teams-grid {
    grid-template-columns: 1fr !important;
  }
  
  .competitions-grid {
    grid-template-columns: 1fr !important;
  }
  
  .competition-card {
    flex-direction: column;
  }
}

/* 12. 로딩 스피너 (미세 개선) */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading {
  border: 3px solid rgba(102, 126, 234, 0.2);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 0.8s linear infinite;
}