/* ==========================================================================
   레이아웃 컴포넌트 - 헤더, 푸터, 섹션
   ========================================================================== */

/* 헤더
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding: 0 24px;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-badge {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--white);
  transition: var(--transition);
  margin-right: 12px;
}

.header.scrolled .header-badge {
  background: var(--eco-green-100);
  border-color: var(--eco-green-200);
  color: var(--eco-green-700);
}

@media (min-width: 768px) {
  .header-badge {
    display: flex;
  }
}

/* 푸터
   ========================================================================== */
.footer {
  padding: clamp(48px, 8vw, 64px) 0;
  background: var(--gray-100);
  border-top: 1px solid var(--gray-200);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-info {
  font-size: var(--text-sm);
  color: var(--gray-600);
  line-height: var(--leading-relaxed);
}

.footer-copyright {
  font-size: var(--text-xs);
  color: var(--gray-500);
}

/* 섹션 간격
   ========================================================================== */
section {
  position: relative;
}

.section-padding {
  padding: var(--section-padding-sm) 0;
}

/* 반응형 그리드 유틸리티
   ========================================================================== */
.grid {
  display: grid;
  gap: 24px;
}

.grid-cols-1 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 애니메이션 헬퍼
   ========================================================================== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

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

/* 모바일 반응형
   ========================================================================== */
@media (max-width: 767px) {
  .header-cta .btn {
    padding: 10px 18px;
    font-size: 13px;
  }
}