* {
  box-sizing: border-box;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: url("images/watermark.png") center center no-repeat;
  background-size: 500px;
  /* desktop size */
  opacity: 0.3;
  pointer-events: none;
  z-index: -1;
}

.navbar {
  flex-wrap: wrap;
  inline-size: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.navitem a {
  color: white;
  text-decoration: none;
}

.navitem {

  margin: 0 50px 5px 50px;
  position: flex;
  font-size: 20px;
}

.menu-btn {
  justify-content: center;
  align-items: center;
  display: none;
  cursor: pointer;
}

body {
  margin: 50px 0 0 0;
  font-family: Arial, sans-serif;
  background: #0B0B2B;
  color: #111;
}

body.lock {
  overflow: hidden;
}

.heading {
  font-size: 30px;
  position: relative;
  text-align: center;
}

.line {
  inline-size: 100%;
  margin: 10px 0 10px 0;
  position: relative;
  border-block-start: 2px solid #fff;
  box-sizing: border-box;
}

@media (max-width:1024px) {

  .content-large {
    font-size: 40px;
    margin: 0 auto 0 auto;
    overflow-wrap: break-word;
    max-inline-size: 50%;
    max-block-size: 30%;
    align-items: center;
    justify-items: center;
  }

  .container {

    position: relative;
    inline-size: 100%;
  }

  .container p {
    font-size: 20px;
  }

  .menu-btn {
    display: flex;
  }

  .navbar {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    -webkit-backdrop-filter: blur(24px);
    backdrop-filter: blur(24px);
    -webkit-mask: linear-gradient(180deg, transparent, #000 8%);
    mask: linear-gradient(180deg, transparent, #000 8%);
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transform: translateY(-20px);
    transition:
      max-height 0.5s ease,
      opacity 0.35s ease,
      transform 0.35s ease;
    pointer-events: none;
  }

  .navbar.active {
    display: flex;
    max-height: 500px;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .navitem {
    border: 2px solid white;
    width: 100%;
    padding: 15px;
    margin: auto;
    text-align: center;
    opacity: 0;
    transform: translateY(-10px);
    transition:
      opacity 0.3s ease,
      transform 0.3s ease;
  }

  .navbar.active .navitem {
    opacity: 1;
    transform: translateY(0);
  }

  .navbar.active .navitem:nth-child(1) {
    transition-delay: 0.05s;
  }

  .navbar.active .navitem:nth-child(2) {
    transition-delay: 0.1s;
  }

  .navbar.active .navitem:nth-child(3) {
    transition-delay: 0.15s;
  }

  .navbar.active .navitem:nth-child(4) {
    transition-delay: 0.2s;
  }

  .navbar.active .navitem:nth-child(5) {
    transition-delay: 0.25s;
  }
}


.headin {
  color: #fff;
  position: fixed;
  inline-size: 100%;
  inset-block-start: 0;
  inset-inline-start: 0;
  justify-content: center;
  align-items: center;
  text-align: center;
  z-index: 1000;
  transition: transform 0.4s ease;
  flex-direction: column;
  padding: 10px 0;

}

#app-store {
  inline-size: 100%;
  max-inline-size: 1000px;
  margin: auto;
  padding: 100px 20px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 30px;
}

.store-title {
  font-size: 40px;
  margin: 0;
}

.avatar {
  inline-size: 44px;
  block-size: 44px;
  overflow: hidden;
  border-radius: 50%;
}

.avatar img {
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
}

ul,
li {
  list-style: none;
  padding: 0;
  margin: 0;
}

.card-list {
  display: flex;
  margin: 20px;
  flex-wrap: wrap;
  gap: 20px;
}

.card {
  position: relative;
  flex: 1 1 calc(50% - 20px);
  block-size: 420px;
  cursor: pointer;
}

.card-content {
  position: relative;
  inline-size: 100%;
  block-size: 100%;
  border-radius: 24px;
  overflow: hidden;
  background: transparent;
  transition: transform 0.4s ease;
}

.card:hover .card-content {
  transform: translateY(-4px);
}

.card-image-container {
  position: relative;
  inline-size: 100%;
  block-size: 100%;
}

.card-image-container::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
      rgba(0, 0, 0, 0.7),
      rgba(0, 0, 0, 0.2),
      transparent);
}

.card-image {
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
  position: absolute;
  filter: brightness(0.4);
  transition: filter 0.4s ease;
}

.card:hover .card-image {

  filter: brightness(1);
}

.title-container {
  position: absolute;
  inset-block-start: 24px;
  inset-inline-start: 24px;
  z-index: 2;
  color: white;
  max-inline-size: 80%;
  text-align: left;
}

.h6 {
  font-size: 13px;
  text-transform: uppercase;
  opacity: 0.8;
  display: block;
  margin-block-end: 10px;
  letter-spacing: 1px;
}

.h3 {
  margin: 0;
  font-size: 25px;
  line-height: 1.1;
  font-weight: 500;
}

.content-container {
  display: none;
}

.backdrop-blur {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 900;
  display: grid;
  height: 150px;
  pointer-events: none;

  >span {
    grid-area: 1/1;
    transition: opacity 0.2s linear;
  }

  > :first-child {
    -webkit-backdrop-filter: blur(1px);
    backdrop-filter: blur(1px);
    -webkit-mask: linear-gradient(0deg, transparent, #000 8%);
    mask: linear-gradient(0deg, transparent, #000 8%);
  }

  > :nth-child(2) {
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    -webkit-mask: linear-gradient(0deg, transparent 8%, #000 16%);
    mask: linear-gradient(0deg, transparent 8%, #000 16%);
  }

  > :nth-child(3) {
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    -webkit-mask: linear-gradient(0deg, transparent 16%, #000 24%);
    mask: linear-gradient(0deg, transparent 16%, #000 24%);
  }

  > :nth-child(4) {
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    -webkit-mask: linear-gradient(0deg, transparent 24%, #000 36%);
    mask: linear-gradient(0deg, transparent 24%, #000 36%);
  }

  > :nth-child(5) {
    -webkit-backdrop-filter: blur(24px);
    backdrop-filter: blur(24px);
    -webkit-mask: linear-gradient(0deg, transparent 36%, #000 48%);
    mask: linear-gradient(0deg, transparent 36%, #000 48%);
  }

  > :nth-child(6) {
    -webkit-backdrop-filter: blur(32px);
    backdrop-filter: blur(32px);
    -webkit-mask: linear-gradient(0deg, transparent 48%, #000 60%);
    mask: linear-gradient(0deg, transparent 48%, #000 60%);
  }

  &::after {
    content: "";
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.2) 60%, transparent);
    grid-area: 1/1;
  }
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transition: 0.35s ease;
  z-index: 1000;
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

.expanded-card {
  position: fixed;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%) scale(0.9);
  inline-size: min(90vw, 720px);
  max-block-size: 90vh;
  overflow-y: auto;
  border-radius: 28px;
  background: white;
  z-index: 1001;
  opacity: 0;
  overflow: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  transition:
    transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.35s ease;
}

.expanded-card.active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.expanded-image {
  position: relative;
  block-size: 420px;
  overflow: hidden;
}

.expanded-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
      rgba(0, 0, 0, 0.7),
      rgba(0, 0, 0, 0.2),
      transparent);
}

.expanded-image img {
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
}

.expanded-title {
  position: absolute;
  inset-inline-start: 30px;
  inset-block-end: 30px;
  color: white;
  z-index: 2;
  max-inline-size: 80%;
}

.expanded-title h2 {
  margin: 0;
  font-size: 42px;
  line-height: 1.05;
}

.expanded-title span {
  font-size: 14px;
  text-transform: uppercase;
  opacity: 0.85;
}

.expanded-content {
  padding: 35px;
  font-size: 18px;
  line-height: 1.7;
  color: #444;
}

.close-btn {
  position: absolute;
  inset-block-start: 18px;
  inset-inline-end: 18px;
  inline-size: 42px;
  block-size: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: white;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: 0.25s ease;
}

.close-btn:hover {
  transform: scale(1.08);
  background: rgba(255, 255, 255, 0.35);
}

@media screen and (max-width: 768px) {

  #app-store {
    padding: 60px 15px;
  }

  header {
    margin-bottom: 20px;
  }

  .store-title {
    font-size: 32px;
  }

  .card-list {
    margin: 15px;
    gap: 15px;
    flex-direction: column;
  }



  .card {
    flex: none;
    width: 100%;
    block-size: 280px;
  }

  .title-container {
    top: 16px;
    left: 16px;
    max-width: 90%;
  }

  .h3 {
    font-size: 22px;
  }

  .expanded-card {
    width: 95vw;
    max-height: 95vh;
    border-radius: 20px;
  }

  .expanded-image {
    block-size: 250px;
  }

  .expanded-title {
    left: 20px;
    bottom: 20px;
  }

  .expanded-title h2 {
    font-size: 24px;
  }

  .expanded-content {
    padding: 20px;
    font-size: 15px;
    line-height: 1.6;
  }

  .close-btn {
    width: 38px;
    height: 38px;
    font-size: 20px;
  }
}

span {
  display: flex;
  gap: 1rem;
}

html {
  scroll-behavior: smooth;
}