/* ========================================
   首页样式 - Hero、非遗介绍、功能导航、作品展示
   ======================================== */

/* ---- Hero 横幅 ---- */
.hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-red-dark) 0%, var(--color-red) 50%, var(--color-red-dark) 100%);
}

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.08;
  background-image:
    radial-gradient(circle at 20% 30%, var(--color-gold) 1px, transparent 1px),
    radial-gradient(circle at 60% 70%, var(--color-gold) 1px, transparent 1px),
    radial-gradient(circle at 80% 20%, var(--color-gold) 1px, transparent 1px),
    radial-gradient(circle at 40% 80%, var(--color-gold) 1px, transparent 1px);
  background-size: 80px 80px, 120px 120px, 60px 60px, 100px 100px;
  animation: hero-bg-float 20s ease-in-out infinite;
}

.hero__bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M50 5 L55 20 L70 20 L58 30 L62 45 L50 35 L38 45 L42 30 L30 20 L45 20Z' fill='%23C9A84C'/%3E%3C/svg%3E");
  background-size: 150px 150px;
  animation: hero-pattern-drift 30s linear infinite;
}

@keyframes hero-bg-float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-10px, -10px); }
}

@keyframes hero-pattern-drift {
  from { background-position: 0 0; }
  to { background-position: 150px 150px; }
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  max-width: var(--max-content-width);
}

.hero__title {
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--color-gold);
  letter-spacing: 0.2em;
  margin-bottom: var(--space-md);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  animation: hero-title-in 1s ease-out;
}

.hero__title-accent {
  display: block;
  font-size: 1.2rem;
  color: var(--color-gold-light);
  letter-spacing: 0.5em;
  margin-top: var(--space-sm);
  font-weight: 400;
  opacity: 0.8;
}

@keyframes hero-title-in {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__desc {
  font-family: var(--font-body);
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.8;
  animation: hero-desc-in 1s ease-out 0.3s both;
}

@keyframes hero-desc-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 16px 40px;
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-ink);
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(201, 168, 76, 0.4);
  transition: all var(--transition-normal);
  animation: hero-cta-in 1s ease-out 0.6s both;
}

.hero__cta:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-gold);
}

.hero__cta:active {
  transform: translateY(0) scale(0.98);
}

@keyframes hero-cta-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8rem;
  animation: hero-scroll-bounce 2s ease-in-out infinite;
}

.hero__scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(255, 255, 255, 0.5);
  border-bottom: 2px solid rgba(255, 255, 255, 0.5);
  transform: rotate(45deg);
}

@keyframes hero-scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

@media (max-width: 768px) {
  .hero__title {
    font-size: 2.5rem;
    letter-spacing: 0.1em;
  }

  .hero__title-accent {
    font-size: 1rem;
    letter-spacing: 0.3em;
  }

  .hero__desc {
    font-size: 1rem;
    padding: 0 var(--space-md);
  }

  .hero__cta {
    padding: 14px 32px;
    font-size: 1rem;
  }

  .hero__scroll-hint {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: 2.2rem;
  }

  .hero__title-accent {
    font-size: 0.9rem;
    letter-spacing: 0.2em;
  }

  .hero__cta {
    padding: 14px 28px;
    font-size: 1rem;
  }

  .hero__desc {
    font-size: 0.95rem;
  }
}

/* ---- 非遗介绍区 ---- */
.intro {
  padding: var(--space-3xl) var(--space-xl);
  max-width: var(--max-content-width);
  margin: 0 auto;
}

.intro__wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-3xl);
}

.intro__image-side {
  flex: 1;
  position: relative;
}

.intro__image {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 3px solid var(--color-gold);
  transition: transform var(--transition-slow);
}

.intro__image:hover {
  transform: scale(1.02);
}

.intro__image-frame {
  position: absolute;
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  border: 2px solid var(--color-red);
  border-radius: var(--radius-lg);
  pointer-events: none;
  opacity: 0.4;
}

.intro__text-side {
  flex: 1;
}

.intro__label {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--color-gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  padding: 4px 12px;
  border: 1px solid var(--color-gold);
  border-radius: var(--radius-sm);
}

.intro__title {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-ink);
  margin-bottom: var(--space-lg);
  line-height: 1.4;
}

.intro__desc {
  font-size: 1rem;
  color: var(--color-gray-dark);
  line-height: 2;
  margin-bottom: var(--space-lg);
}

@media (max-width: 1024px) {
  .intro__wrapper {
    gap: var(--space-2xl);
  }
}

@media (max-width: 768px) {
  .intro {
    padding: var(--space-2xl) var(--space-md);
  }

  .intro__wrapper {
    flex-direction: column;
    gap: var(--space-xl);
  }

  .intro__title {
    font-size: 1.5rem;
  }

  .intro__desc {
    font-size: 0.95rem;
  }
}

/* ---- 功能导航区 ---- */
.features {
  padding: var(--space-3xl) var(--space-xl);
  background: var(--color-paper);
}

.features__inner {
  max-width: var(--max-content-width);
  margin: 0 auto;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.features__card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  border: 1px solid var(--color-gray);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.features__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-red), var(--color-gold));
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.features__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-gold);
}

.features__card:hover::before {
  transform: scaleX(1);
}

.features__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(196, 26, 26, 0.08), rgba(201, 168, 76, 0.08));
  border: 1.5px solid var(--color-gold);
  font-size: 2rem;
  color: var(--color-red);
  transition: all var(--transition-normal);
}

.features__card:hover .features__icon {
  background: var(--color-red);
  color: var(--color-gold);
  border-color: var(--color-red);
  transform: scale(1.05);
}

.features__card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
}

.features__card-desc {
  font-size: 0.9rem;
  color: var(--color-gray-dark);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.features__card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--color-red);
  font-weight: 500;
  transition: gap var(--transition-fast);
}

.features__card-link:hover {
  gap: var(--space-sm);
  color: var(--color-red-dark);
}

@media (max-width: 1024px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .features {
    padding: var(--space-2xl) var(--space-md);
  }

  .features__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .features__card {
    padding: var(--space-xl);
  }
}

/* ---- 作品展示区 ---- */
.gallery {
  padding: var(--space-3xl) var(--space-xl);
  max-width: var(--max-content-width);
  margin: 0 auto;
}

.gallery__inner {
  width: 100%;
}

.section-title__sub {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--color-gray-dark);
  margin-top: var(--space-sm);
  letter-spacing: 0.15em;
}

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.gallery__item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-gray);
  transition: all var(--transition-normal);
}

.gallery__item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), 0 0 25px rgba(201, 168, 76, 0.2);
  border-color: var(--color-gold);
}

.gallery__frame {
  position: relative;
  padding: 10px;
}

.gallery__frame img {
  width: 100%;
  display: block;
  border-radius: var(--radius-md);
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

@media (max-width: 1024px) {
  .gallery__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .gallery {
    padding: var(--space-2xl) var(--space-md);
  }

  .gallery__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  .gallery__grid {
    grid-template-columns: 1fr;
  }
}

/* ---- 转印作品展 ---- */
.transfer-gallery {
  padding: var(--space-3xl) var(--space-xl);
  background: var(--color-paper);
}

.transfer-gallery__inner {
  max-width: var(--max-content-width);
  margin: 0 auto;
}

.transfer-gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.transfer-gallery__item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-gray);
  transition: all var(--transition-normal);
}

.transfer-gallery__item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), 0 0 25px rgba(201, 168, 76, 0.2);
  border-color: var(--color-gold);
}

.transfer-gallery__item img {
  width: 100%;
  display: block;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

@media (max-width: 768px) {
  .transfer-gallery {
    padding: var(--space-2xl) var(--space-md);
  }

  .transfer-gallery__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  .transfer-gallery__grid {
    grid-template-columns: 1fr;
  }

  .transfer-gallery__item img {
    aspect-ratio: 16 / 9;
  }
}