/* ========================================
   HEADER
======================================== */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  background: var(--bg-transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.header-left,
.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

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

.header-logo {
  width: 42px;
  height: 42px;
}

.header-name {
  font-size: 1.5rem;
  line-height: 3rem;
  font-weight: normal;
  background: var(--accent-gradient);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradient-shift 4s ease infinite;
}

@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.nav-list {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-link {
  position: relative;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: width var(--transition-normal);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

main {
  padding: 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

h1 {
  font-size: 3rem;
  margin-bottom: 4rem;
}

.guide-intro {
  font-size: 1.1rem;
  opacity: 0.8;
  line-height: 1.6;
  margin-bottom: 4rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}


pre{
  margin-block: -1rem;
}

code {
  display: block;
  padding: 0.5rem;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 4px;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  overflow-x: auto;
}

.description-box {
  padding: 1.5rem;
  background: var(--bg-elevated);
  border-radius: 8px;
  margin-top: 1rem;
}

.description-box ul {
  margin-top: 1rem;
  padding-left: 1.5rem;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
  width: 100%;
}

.title-decoration {
  flex: 1;
  height: 1px;
  background: var(--text-primary, #000);
}

.container {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin-block: 8rem;
  gap: 2rem;
}

.container img , video , #FAQ img {
  border-radius: var(--radius-md);
}


.Gradient {
  justify-content: center;
}

.gradient-text {
  max-width: 300px;
  margin-left: .5rem;
}

.Filter {
  display: flex;
  flex-wrap: wrap;
  align-items: start;
  gap: 1.5rem;
}

.Filter-box {
  max-width: 400px;
  display: grid;
  grid-template-columns: 100px minmax(100px, 400px);
}

.Filter-box video {
  grid-area: video;
  border-radius: 12px;
  grid-column: 1/2;
  grid-row: 1/2;
  max-width: 100%;
}

.Filter-box h3 {
  grid-row: 1/2;
  grid-column: 2/3;
  justify-self: start;
  align-self: center;
  margin-left: 1rem;
}

.Filter-box h4 {
  grid-row: 2/3;
  grid-column: 1/3;
  margin: .5rem .5rem 0 0;
}

.Filter-box,
.Blend-box {
  max-width: 420px;
  min-width: 300px;
  width: 100%;
  min-height: 208px;
  display: grid;
  grid-template-columns: clamp(100px, 20vw, 120px) 1fr;
  grid-template-rows: auto auto;
  gap: 0.75rem;
  padding: 1.5rem;
  background: var(--bg-elevated);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.Filter-box:hover,
.Blend-box:hover {
  background: var(--hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.15);
}

.blend {
  display: flex;
  flex-wrap: wrap;
  align-items: start;
  gap: 1.5rem;
}

.blend-img {
  border-radius: 12px;
  grid-column: 1/2;
  grid-row: 1/2;
  width: 100px !important;
  height: 100px !important;
}

.Blend-box h3 {
  grid-row: 1/2;
  grid-column: 2/3;
  justify-self: start;
  align-self: center;
  margin-left: 1rem;
}

.Blend-box h4 {
  grid-row: 2/3;
  grid-column: 1/3;
  margin: .5rem .5rem 0 0;
}

.layer {
  flex-direction: column;
}

.layer-img img {
  margin: .5rem;
}

.layer h3{
  margin-left: .5rem;
}

.layer-code-img img {
  border: 1px solid var(--border);
  margin-inline: .5rem;
}

.Output {
  justify-content: center;
}

.Output img {
  border: 1px solid var(--border);
}

.Output h3 {
  margin: .5rem;
}

#noise-svg {
  display: flex;
  flex-direction: column;
  max-width: min-content;
}

#css-output {
  display: flex;
  flex-direction: column;
  max-width: min-content;
  align-items: flex-end;
}

#noise-css {
  display: flex;
  flex-direction: column;
  width: min-content;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 3rem;
  padding-bottom: 8rem;
  flex-wrap: wrap;
}

.nav a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-weight: 500;
  transition: all var(--transition-normal);
}

.nav a:hover {
  background: var(--hover);
  border-color: var(--text-primary);
  transform: translateX(5px);
}

.nav a svg {
  transition: transform var(--transition-normal);
}

.nav a:hover svg {
  transform: translateX(4px);
}

/* ========================================
   SECTIONS
======================================== */
#FAQ {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem;
}

.cart {
  max-width: var(--container-max);
  width: 100%;
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 18px;
  position: relative;
  -webkit-touch-callout: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  margin: .6rem;
  cursor: pointer;
}

.cart-header {
  display: flex;
  justify-content: end;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.cart-title {
  flex-grow: 1;
  justify-self: start !important;
  align-items: center;
  font-weight: 600;
  color: var(--text-titel);
  width: max-content;
}

.cart-content {
  overflow: hidden;
  height: 0;
  filter: blur(8px);
  opacity: 0;
  transform: translateY(10px);
  transition:
    height 0.3s ease,
    filter 0.5s ease,
    opacity 0.5s ease,
    transform 0.5s ease;
}

.cart-content img {
  margin: .5rem;
}

.cart.open .cart-content {

  filter: blur(0px);
  opacity: 1;
}

#FAQ a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-weight: 500;
  transition: all var(--transition-normal);
  margin-top: 1rem;
}

#FAQ a:hover {
  background: var(--hover);
  border-color: var(--text-primary);
  transform: translateX(5px);
}

#FAQ a svg {
  stroke: var(--text-primary);
  transition: transform var(--transition-normal);
}

#FAQ a:hover svg {
  transform: translateX(4px);
}
/* ========================================
   RESPONSIVE - TABLET (max-width: 1024px)
======================================== */
@media (max-width: 1024px) {
  .header {
    padding: 0 16px;
  }

  .nav-list {
    gap: 20px;
  }

  .nav-link {
    font-size: 13px;
  }


  h2 {
    font-size: 26px;
  }

  .container {
    margin-block: 5rem;
    gap: 1.5rem;
  }

  main {
    padding: 1.5rem;
  }

  .container img , video , p,h3,h4 {
    animation: none;
  }
  

}

/* ========================================
   RESPONSIVE - MOBILE LARGE (max-width: 768px)
======================================== */
@media (max-width: 768px) {
  .header {
    padding: 0 12px;
    flex-wrap: wrap;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .header-nav.active {
    transform: translateX(0);
    opacity: 1;
  }

  .nav-list {
    gap: 12px;
  }

  .header-right {
    gap: 10px;
  }

  h1 {
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
  }

  .guide-intro{
    text-align: center;
  }

  h2 {
    font-size: 22px;
    padding: 0 10px;
  }

  .container {
    margin-block: 3rem;
    gap: 1rem;
    justify-content: center;
  }

  main {
    padding: 1rem;
  }

  .gradient-text {
    text-align: center;
  }

  .blend-img {
    width: 80px !important;
    height: 80px !important;
  }

  .layer-img img,
  .layer-code-img img {
    margin: .25rem;
    max-width: 100%;
  }

  #noise-svg,
  #css-output,
  #noise-css {
    max-width: 100%;
    width: 100%;
    align-items: center;
  }

  footer {
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding-bottom: 4rem;
  }

  footer a {
    padding: 12px 24px;
    width: 80%;
    justify-content: center;
  }
}

/* ========================================
   RESPONSIVE - MOBILE SMALL (max-width: 480px)
======================================== */
@media (max-width: 480px) {

  .header-brand {
    gap: 8px;
  }

  .header-name{
    display: none;
  }

  .header-cta {
    padding: 6px 12px;
    font-size: 12px;
  }

  .header-cta svg {
    width: 14px;
    height: 14px;
  }

  h2 {
    font-size: 18px;
  }

  main {
    padding: 0.75rem;
  }

  .container img {
    max-width: 100%;
}


  .blend-img {
    grid-column: 1 !important;
    grid-row: 1 !important;
    margin: 0 auto;
  }

  .layer-img img,
  .layer-code-img img {
    margin: 0.25rem 0;
  }

  footer a {
    width: 90%;
    padding: 10px 20px;
    font-size: 14px;
  }

  footer a:hover {
    transform: none;
  }
}