*{margin:0;padding:0;box-sizing:border-box;}
.concerns-section{
  background:var(--color-black);
  color:var(--color-white);
  font-family:var(--font-body);
  overflow-x:hidden;
}

/* HERO */
.cs-hero{
  height:43vh;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:0 20px;
}

.cs-hero h1{
  font-family:var(--font-body);
  font-size:3.25rem;
  line-height:1.1;
  display: block;
}

/* EXPLORE */
.cs-explore{
  margin-top:40px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  cursor:pointer;
  animation:fadeIn 1.5s ease forwards;
}

.cs-explore span{
  font-size:0.9em;
  color:var(--color-offwhite);
  letter-spacing:1px;
}

.cs-arrow{
  width:18px;
  height:18px;
  border-right:2px solid var(--color-white);
  border-bottom:2px solid var(--color-white);
  transform:rotate(45deg);
  animation:bounce 1.6s infinite;
}

@keyframes bounce{
  0%,100%{ transform:translateY(0) rotate(45deg); opacity:0.6;}
  50%{ transform:translateY(10px) rotate(45deg); opacity:1;}
}

@keyframes fadeIn{
  from{opacity:0; transform:translateY(10px);}
  to{opacity:1; transform:translateY(0);}
}

/* PROGRESS DOTS */
.cs-dots{
  display:none;
}

.cs-dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--color-offwhite);
  transition:0.3s;
}

.cs-dot.active{
  width:18px;
  border-radius:20px;
  background:var(--color-white);
}

/* CONCERNS */
.cs-concerns{
  padding:15px 0px;
  margin-bottom: 5vh;
}

.cs-track{
  display:flex;
  gap:30px;
  overflow-x:auto;
  padding:0 10vw;
  scroll-snap-type:x mandatory;
  scroll-behavior:smooth;
  scrollbar-width: none;       /* Firefox */
  -ms-overflow-style: none;    /* IE/Edge legacy */
}

.cs-track::-webkit-scrollbar {
  display: none;               /* Chrome/Safari */
}

.cs-card {
  min-width: 280px;
  height: 460px;
  border-radius: 20px;
  overflow: hidden;
  scroll-snap-align: center;
  transition: 0.4s;
  position: relative;
  transform: scale(0.9);
  opacity: 0.5;
  cursor: pointer;
}

.cs-card.active {
  transform: scale(1);
  opacity: 1;
}

.cs-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: 0.6s;
}

.cs-card:hover img {
  transform: scale(1.05);
}

.cs-card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 18px;
  padding-top: 75px;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0%,
    rgba(0, 0, 0, 0.35) 25%,
    rgba(0, 0, 0, 0.55) 100%
  );
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 40%);
  mask-image: linear-gradient(to bottom, transparent 0%, black 40%);
  border-top: none;
}

.cs-card h2 {
  font-family:  -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1.8rem;
  color: var(--color-white);
  margin-bottom: 16px;
}

.cs-card-desc {
  font-size: 12.5px;
  color: var(--color-offwhite);
  line-height: 1.5;
  margin-bottom: 12px;
}

.cs-card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.cs-card-tag {
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.85);
}

.cs-card-reserve {
  display: block;
  width: 100%;
  padding: 11px;
  margin-top: 15px;
  background: #fff;
  color: #111;
  border: none;
  border-radius: 20px;
  font-size: 13.5px;
  text-align: center;
  cursor: pointer;
  transition: 0.2s;
}

.cs-card-reserve:hover {
  background: #f0f0f0;
}

/* OVERLAY */
.cs-overlay{
  position:fixed;
  inset:0;
  background:var(--color-black);
  transform:translateX(100%);
  transition:0.5s;
  z-index:100;
  overflow-y:auto;
}

.cs-overlay.active{
  transform:translateX(0);
}

/* HEADER INSIDE OVERLAY */
.cs-overlay-header{
  display:flex;
  align-items:center;
  gap:15px;
  padding:25px 30px 10px;
  margin-top: 8vh;
}

.cs-back-btn{
  font-size:22px;
  cursor:pointer;
  opacity:0.8;
  transition:0.2s;
}

.cs-back-btn:hover{
  transform:translateX(-2px);
  opacity:1;
}

.cs-overlay-title{
  font-family:var(--font-heading);
  font-size:2rem;
}

/* DETAIL GRID */
.cs-detail{
  padding:20px 40px 60px;
  max-width:900px;
  margin:0 auto;
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));
  gap:20px;
}

/* TREATMENT CARD */
.cs-treatment-card{
  position:relative;
  border-radius:16px;
  overflow:hidden;
  height:280px;
  border:1px solid var(--color-black);
  transition:0.3s;
}

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

.cs-treatment-card img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:brightness(0.6);
  transition:0.5s;
}

.cs-treatment-card:hover img{
  transform:scale(1.05);
  filter:brightness(0.75);
}

.cs-treatment-info{
  position:absolute;
  bottom:0;
  left:0;
  right:0;
  padding:16px;
  background:linear-gradient(to top, rgba(0,0,0,0.85), transparent);
}

.cs-treatment-info h2{
  font-family:var(--font-heading);
  font-size:1.3rem;
}

.cs-treatment-info p{
  font-size:13px;
  color:var(--color-offwhite);
  margin-top:4px;
}

.cs-price{
  margin-top:8px;
  color:var(--color-offwhite);
  font-size:13px;
}

/* BUTTON */
.cs-btn{
  margin-top:10px;
  padding:10px 14px;
  border:1px solid var(--color-offwhite);
  display:inline-block;
  cursor:pointer;
  border-radius:8px;
  font-size:13px;
  transition:0.3s;
  color: var(--color-white);   
  text-decoration: none;    
}

.cs-btn:hover{
  background:var(--color-white);
  color:var(--color-black);
}


/* CTA */
.cs-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;

  text-align: center;
  gap: 1rem;

  margin: 1rem auto 0;
  padding: 2rem 0 0;
}

.cs-cta p {
  font-weight: 300;
  font-size: 0.875rem;
  color: var(--color-gray);  
  margin: 0;
}

.cs-cta__btn {
  display: inline-block;
  padding: 0.8em 2em;
  border: 1px solid #3d3d3d;
  color: var(--color-white);

  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;

  border-radius: 2px;
  transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
}

.cs-cta__btn:hover,
.cs-cta__btn:focus-visible {
  background-color: var(--color-offwhite);
  border-color: var(--color-offwhite);
  color: var(--color-black);
  outline: none;
}

/* MOBILE */
@media (max-width:768px){
  .cs-hero h1{font-size:2.2rem;}

  .cs-dots{
    display:flex;
    justify-content:center;
    gap:8px;
    margin-bottom:3vh;
  }
}

/* DESKTOP GRID */
@media (min-width:1024px){
  .cs-track{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:30px;
    overflow:visible;
    padding:0 10vw;
    scroll-snap-type:none;
  }

  .cs-card{
    transform:scale(1);
    opacity:1;
  }

  .cs-card img {
    object-position: 50% 35%;
  }

  .cs-card-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 16px;
  }

  .cs-card-main {
    display: flex;
    flex-direction: column;
  }

  .cs-card-tags {
    margin-top: 10px;
  }

  .cs-card-reserve {
    width: auto;
    white-space: nowrap;
    margin-top: 0;
    margin-bottom: 12px;
    align-self: flex-end;


    padding: 0.8em 2em;
    border: 1px solid #3d3d3d;
    background: transparent;
    color: var(--color-white);
  }

  .cs-card-reserve:hover {
    background-color: var(--color-offwhite);
    border-color: var(--color-offwhite);
    color: var(--color-black);
  }
}