/* ================================================
   home.css — 메인 홈페이지 전용 스타일
   ================================================ */

/* ---- Hero Gradient Animation ---- */
@keyframes gradientFlow {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes floatUp {
  0%   { transform: translateY(100px) translateX(0px); opacity: 0; }
  15%  { opacity: 0.55; }
  85%  { opacity: 0.25; }
  100% { transform: translateY(-80vh) translateX(30px); opacity: 0; }
}
@keyframes waveDrift {
  0%   { transform: translateX(0); }
  50%  { transform: translateX(-60px); }
  100% { transform: translateX(0); }
}
@keyframes waveDrift2 {
  0%   { transform: translateX(0); }
  50%  { transform: translateX(60px); }
  100% { transform: translateX(0); }
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: calc(100vh - 64px);
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-primary);
  padding: 80px 24px 120px;
  overflow: hidden;
}

/* Particles */
.hero-particles { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
.hero-particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(13, 79, 60, 0.12);
  animation: floatUp linear infinite;
}

/* Wave */
.hero-wave {
  position: absolute;
  bottom: -2px;
  left: -5%;
  width: 110%;
  pointer-events: none;
  z-index: 1;
}
.hero-wave svg { display: block; width: 100%; height: auto; }
.hero-wave .wave1 { animation: waveDrift 8s ease-in-out infinite; }
.hero-wave .wave2 { animation: waveDrift2 11s ease-in-out infinite; }

.hero-content { position: relative; z-index: 2; max-width: 700px; }
.hero-tagline {
  font-size: clamp(1rem, 2.4vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  opacity: 0.88;
  margin-bottom: 44px;
  line-height: 1.6;
}
.hero-brand {
  font-size: clamp(2.8rem, 8vw, 5.2rem);
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1.1;
  margin-bottom: 12px;
  text-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.hero-en {
  font-size: clamp(0.95rem, 2vw, 1.3rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  opacity: 0.72;
  margin-bottom: 44px;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(255,255,255,0.4);
}
.hero-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.hero .btn-outline:hover { background: rgba(13, 79, 60, 0.08); }

/* ---- Stats ---- */
.stats {
  background: var(--color-primary);
  padding: 44px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  text-align: center;
}
.stat-item {
  color: #fff;
  padding: 16px 12px;
  border-right: 1px solid rgba(255,255,255,0.12);
}
.stat-item:last-child { border-right: none; }
.stat-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: #5bb8ff;
  line-height: 1;
  display: block;
}
.stat-suffix { font-size: 1.2rem; font-weight: 600; }
.stat-label { font-size: 0.82rem; opacity: 0.78; margin-top: 6px; }

@media (max-width: 599px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); }
  .stat-item:nth-child(odd) { border-right: 1px solid rgba(255,255,255,0.1); }
  .stat-item:last-child { border-bottom: none; }
  .stat-num { font-size: 2rem; }
}

/* ---- About ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.about-text h2 { font-size: 1.8rem; font-weight: 700; color: var(--color-primary); margin-bottom: 16px; }
.about-text p { color: var(--color-text-sub); line-height: 1.8; margin-bottom: 14px; font-size: 0.95rem; }

.cert-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }

.gov-logos {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.gov-logos img {
  height: 36px;
  width: auto;
  object-fit: contain;
  opacity: 0.85;
  transition: opacity var(--transition);
}
.gov-logos img:hover { opacity: 1; }
.cert-badge {
  background: #e8f1fb;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  border-radius: 5px;
  padding: 5px 12px;
  font-size: 0.82rem;
  font-weight: 600;
}

/* Lottie Animation */
.lottie-about-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}
.lottie-about-wrap lottie-player {
  width: 100%;
  max-width: 420px;
  height: auto;
}

/* Timeline */
.timeline { position: relative; padding-left: 24px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--color-border);
}
.timeline-item { position: relative; margin-bottom: 20px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -21px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px var(--color-accent);
}
.timeline-item.highlight::before { background: var(--color-green); box-shadow: 0 0 0 2px var(--color-green); }
.timeline-year { font-size: 0.78rem; font-weight: 700; color: var(--color-accent); margin-bottom: 2px; }
.timeline-item.highlight .timeline-year { color: var(--color-green); }
.timeline-desc { font-size: 0.88rem; color: var(--color-text-sub); line-height: 1.5; }

@media (max-width: 767px) {
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
}

/* ---- Products Preview ---- */
.product-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.product-card { border-radius: var(--card-radius); overflow: hidden; background: var(--color-surface); box-shadow: var(--card-shadow); transition: box-shadow var(--transition), transform var(--transition); }
.product-card:hover { box-shadow: var(--card-shadow-h); transform: translateY(-4px); }
.product-card-img {
  height: 160px;
  background: linear-gradient(135deg, #e3edf8 0%, #c8d8ec 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}
.product-card-body { padding: 16px; }
.product-card-body h3 { font-size: 1.05rem; font-weight: 800; color: var(--color-primary); margin-bottom: 2px; letter-spacing: 0.04em; }
.product-card-sub { font-size: 0.8rem; color: var(--color-accent); font-weight: 600; margin-bottom: 10px; }
.product-card-body p { font-size: 0.82rem; color: var(--color-text-sub); line-height: 1.5; margin-bottom: 12px; }
.product-card-body .badge { font-size: 0.72rem; }

.products-more { text-align: center; margin-top: 36px; }

/* ---- Main Product Card (백필터 강조) ---- */
.product-main-card {
  background: var(--color-surface);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  border-left: 5px solid var(--color-primary);
  padding: 28px 32px;
  margin-bottom: 16px;
  position: relative;
}
.product-main-badge {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
  letter-spacing: 0.06em;
}
.product-main-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
}
.product-main-text { flex: 1; }
.product-main-text h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}
.product-main-text h3 em {
  font-style: normal;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-sub);
  margin-left: 8px;
}
.product-main-text p {
  font-size: 0.88rem;
  color: var(--color-text-sub);
  line-height: 1.75;
  margin-bottom: 16px;
}
.product-spec-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.spec-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-primary);
  background: #dff0e8;
  padding: 3px 9px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}
.spec-tags {
  font-size: 0.85rem;
  color: var(--color-text-sub);
  font-weight: 500;
}

/* ---- Supply Section (납품 지원 품목) ---- */
.supply-section { margin-top: 8px; }
.supply-header {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-sub);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}
.supply-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.supply-card {
  background: var(--color-surface);
  border-radius: var(--card-radius);
  box-shadow: 0 1px 6px rgba(0,0,0,0.06);
  padding: 16px 18px;
  border-top: 3px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
}
.supply-card:hover { box-shadow: var(--card-shadow); transform: translateY(-2px); }
.supply-card h4 {
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 6px;
  letter-spacing: 0.03em;
}
.supply-card h4 em {
  font-style: normal;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-sub);
  margin-left: 5px;
}
.supply-card p {
  font-size: 0.8rem;
  color: var(--color-text-sub);
  line-height: 1.55;
}

@media (max-width: 767px) {
  .product-main-inner { flex-direction: column; }
  .product-main-inner .btn { align-self: flex-start; }
}
@media (max-width: 599px) {
  .supply-cards { grid-template-columns: 1fr; }
  .product-main-card { padding: 20px; }
}

/* ---- Product Banner Bar ---- */
.product-banner-bar {
  background: var(--color-primary);
  padding: 0;
  margin-top: 48px;
}
.product-banner-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.product-banner-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 28px 60px;
  flex: 1;
  justify-content: center;
  transition: background var(--transition);
  cursor: default;
}
.product-banner-item:hover {
  background: rgba(255,255,255,0.07);
}
.product-banner-icon {
  font-size: 2rem;
  flex-shrink: 0;
}
.product-banner-en {
  font-size: 1.05rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.08em;
  line-height: 1.2;
}
.product-banner-kr {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65);
  margin-top: 3px;
  letter-spacing: 0.04em;
}
.product-banner-divider {
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.18);
  flex-shrink: 0;
}

@media (max-width: 599px) {
  .product-banner-list { flex-direction: column; }
  .product-banner-item { padding: 20px 24px; width: 100%; }
  .product-banner-divider { width: 80%; height: 1px; }
}

@media (max-width: 959px) { .product-cards { grid-template-columns: 1fr 1fr; } }
@media (max-width: 599px) { .product-cards { grid-template-columns: 1fr; } }

/* ---- Why Us ---- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.why-card {
  background: var(--color-surface);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: 32px 24px;
  border-top: 4px solid var(--color-accent);
  transition: box-shadow var(--transition), transform var(--transition);
}
.why-card:hover { box-shadow: var(--card-shadow-h); transform: translateY(-3px); }
.why-icon { font-size: 2.2rem; margin-bottom: 16px; }
.why-card h3 { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 12px; }
.why-card p { font-size: 0.85rem; color: var(--color-text-sub); line-height: 1.75; }

@media (max-width: 959px) { .why-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 599px) { .why-grid { grid-template-columns: 1fr; } }

/* ---- Manufacturing Process ---- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin-top: 48px;
  position: relative;
}
/* 가로 연결선 삭제 */
.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 12px 0;
  position: relative;
  z-index: 1;
}
.process-num {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  box-shadow: 0 4px 14px rgba(26,111,196,0.35);
  flex-shrink: 0;
}
.process-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}
.process-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}
.process-desc {
  font-size: 0.88rem;
  color: var(--color-text-sub);
  line-height: 1.65;
}
.process-card {
  background: var(--color-white);
  border-radius: var(--card-radius);
  padding: 28px 16px 24px;
  width: 100%;
  margin-top: 0;
  box-shadow: var(--shadow-card);
  border-top: 3px solid var(--color-accent);
}
.process-note {
  margin-top: 40px;
  background: #f0f6ff;
  border-left: 4px solid var(--color-accent);
  border-radius: 0 8px 8px 0;
  padding: 16px 20px;
  font-size: 0.88rem;
  color: var(--color-text-sub);
  line-height: 1.7;
}
.process-note strong { color: var(--color-primary); }

/* Process sequential animation */
.process-seq {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.process-seq.visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 959px) {
  .process-steps { grid-template-columns: repeat(3, 1fr); gap: 16px; }
}
@media (max-width: 599px) {
  .process-steps { grid-template-columns: 1fr 1fr; gap: 14px; }
}

/* ---- Industries ---- */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 16px;
  text-align: center;
}
.industry-item { padding: 20px 8px; border-radius: var(--card-radius); background: rgba(255,255,255,0.08); }
.industry-icon { font-size: 2.2rem; display: block; margin-bottom: 8px; }
.industry-name { font-size: 0.8rem; color: rgba(255,255,255,0.85); }

@media (max-width: 959px) { .industry-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 599px) { .industry-grid { grid-template-columns: repeat(3, 1fr); } }

/* ---- Bag Filter Visualization ---- */
.bagfilter-wrap {
  max-width: 860px;
  margin: 0 auto;
  background: #f4f7fc;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  padding: 28px 28px 16px;
  box-shadow: 0 6px 28px rgba(26,43,74,0.10);
}
#bagfilterCanvas {
  width: 100%;
  display: block;
  border-radius: 8px;
}
.bagfilter-caption {
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-text-sub);
  margin-top: 10px;
  letter-spacing: 0.02em;
}

/* ---- CTA Banner ---- */
.cta-banner {
  background: linear-gradient(135deg, #084232 0%, #0d6b4a 60%, #0e7490 100%);
  padding: 64px 0;
  text-align: center;
  color: #fff;
}
.cta-banner h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 12px; }
.cta-banner p { opacity: 0.82; margin-bottom: 28px; font-size: 1rem; }

/* ---- Reveal animation ---- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: none; }