:root {
  --brand: #e5005a;
  --accent: #6422ff;
  --dark:  #111827;
  --light: #f4f4f7;
  --radius: 1rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Poppins", sans-serif;
  color: var(--dark);
  background: var(--light);
  line-height: 1.6;
  scroll-behavior: smooth;
}

.site-header {
  position: sticky;
  top: 0;
  background: #fff;
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  transform: translateY(-100%);
  transition: transform 0.6s ease;
}
.site-header.in-view {
  transform: translateY(0);
}

.site-header h1 {
  margin: 0;
  font-size: 1.5rem;
}
.site-header h1 span {
  color: var(--brand);
}

.site-header nav a {
  margin-left: 1.25rem;
  text-decoration: none;
  color: var(--dark);
  position: relative;
}
.site-header nav a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--brand);
  transition: width 0.3s;
}
.site-header nav a:hover::after {
  width: 100%;
}

.hero {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 2rem 1rem 4rem;
  background: linear-gradient(135deg, var(--accent), var(--brand));
  color: #fff;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s, transform 0.8s;
}
.hero.in-view {
  opacity: 1;
  transform: translateY(0);
}

.hero h2 {
  font-size: clamp(2rem, 5vw + 1rem, 3rem);
}
.hero p {
  max-width: 32rem;
  margin: 1rem auto 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.8rem;
  background: #fff;
  color: var(--brand);
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.3s, box-shadow 0.3s;
}
.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}
.btn.mini {
  padding: 0.4rem 1.2rem;
  font-size: 0.85rem;
}

.pulse {
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.6);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(255, 255, 255, 0);
  }
}

section {
  padding: 3.5rem 1rem;
}
.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2rem;
}

.about {
  background: #fff;
  max-width: 60rem;
  margin: 0 auto;
}
.about h3 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 1rem;
}

.collection {
  background: var(--light);
}
.cards {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.shirt-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
  padding: 0 0 1.25rem;
  text-align: center;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s, transform 0.7s;
}
.shirt-card.in-view {
  opacity: 1;
  transform: translateY(0);
}
.hover-rise:hover {
  transform: translateY(-8px) !important;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.12);
}

.shirt-img {
  height: 220px;
  width: 100%;
  border-top-left-radius: var(--radius);
  border-top-right-radius: var(--radius);
}

.img-sunset {
  background: linear-gradient(135deg, #ffb347, #ffcc33);
}
.img-midnight {
  background: linear-gradient(135deg, #111827, #374151);
}
.img-sage {
  background: linear-gradient(135deg, #8bc34a, #c5e1a5);
}

.why ul {
  list-style: none;
  padding: 0;
  max-width: 50rem;
  margin: 0 auto;
}
.why li {
  display: flex;
  align-items: baseline;
  margin: 0.75rem 0;
}
.why span {
  font-weight: 600;
  color: var(--brand);
  margin-right: 0.5rem;
}

.cta {
  background: var(--brand);
  color: #fff;
  text-align: center;
  padding: 4rem 1rem;
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.8s, transform 0.8s;
}
.cta.in-view {
  opacity: 1;
  transform: scale(1);
}

.bounce {
  animation: bounce 6s infinite;
}
@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

.site-footer {
  background: #fff;
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.9rem;
  color: #6b7280;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s, transform 0.8s;
}
.site-footer.in-view {
  opacity: 1;
  transform: translateY(0);
}

.fade-in, .slide-up, .slide-down {
  opacity: 0;
}
.fade-in.in-view,
.slide-up.in-view,
.slide-down.in-view {
  opacity: 1;
}

.slide-up {
  transform: translateY(40px);
}
.slide-up.in-view {
  transform: translateY(0);
}

.slide-down {
  transform: translateY(-40px);
}
.slide-down.in-view {
  transform: translateY(0);
}

@media (min-width: 768px) {
  .hero {
    padding-top: 6rem;
  }
}