/* ============================
   CSS Variables & Reset 
   ============================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Light theme */
  --c-bg: #E8E8E9;
  --c-content: #224;
  --c-action: #DC143C;
  --c-glass: #bbbbbc;
  --c-light: #fff;
  --c-dark: #000;
  --glass-reflex-dark: 1;
  --glass-reflex-light: 1;
  --saturation: 150%;
  --blob-opacity-base: 0.25;
  --blob-opacity-lighter: 0.4;
  --carousel-scale: 1.5;
}

[data-theme="dark"] {
  --c-bg: #1b1b1d;
  --c-content: #e1e1e1;
  --c-action: #DC143C;
  --c-glass: #bbbbbc;
  --c-light: #fff;
  --c-dark: #000;
  --glass-reflex-dark: 2;
  --glass-reflex-light: 0.3;
  --saturation: 150%;
  --blob-opacity-base: 0.15;
  --blob-opacity-lighter: 0.25;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-optical-sizing: auto;
  font-size: 18px;
  line-height: 1.6;
  color: var(--c-content);
  background: var(--c-bg);
  transition: background 400ms cubic-bezier(1, 0, 0.4, 1), color 400ms cubic-bezier(1, 0, 0.4, 1);
  position: relative;
  overflow-x: hidden;
}

/* ============================
   Canvas Background (Lava Lamp)
   ============================ */
#bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  filter: blur(200px) brightness(5);
}

/* ============================
   Theme Switcher
   ============================ */
.switcher {
  position: fixed;
  z-index: 1000;
  top: 32px; /* moved down slightly */
  right: 32px; /* align to top-right */
  left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  width: 164px;
  max-width: 164px;
  height: 70px;
  box-sizing: border-box;
  padding: 8px 12px 10px;
  margin: 0;
  border: none;
  border-radius: 99em;
  background-color: color-mix(in srgb, var(--c-glass) 12%, transparent);
  backdrop-filter: blur(8px) saturate(var(--saturation));
  -webkit-backdrop-filter: blur(8px) saturate(var(--saturation));
  box-shadow: 
    inset 0 0 0 1px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 10%), transparent),
    inset 1.8px 3px 0px -2px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 90%), transparent), 
    inset -2px -2px 0px -2px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 80%), transparent), 
    inset -3px -8px 1px -6px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 60%), transparent), 
    inset -0.3px -1px 4px 0px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 12%), transparent), 
    inset -1.5px 2.5px 0px -2px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 20%), transparent), 
    inset 0px 3px 4px -2px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 20%), transparent), 
    inset 2px -6.5px 1px -4px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 10%), transparent), 
    0px 1px 5px 0px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 10%), transparent), 
    0px 6px 16px 0px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 8%), transparent);
  transition: background-color 400ms cubic-bezier(1, 0, 0.4, 1), box-shadow 400ms cubic-bezier(1, 0, 0.4, 1);
}

.switcher__legend {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  border: 0;
  padding: 0;
  white-space: nowrap;
  clip-path: inset(100%);
  clip: rect(0 0 0 0);
  overflow: hidden;
}

.switcher__input {
  clip: rect(0 0 0 0);
  clip-path: inset(100%);
  height: 1px;
  width: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
}

.switcher__icon {
  display: block;
  width: 100%;
  transition: scale 200ms cubic-bezier(0.5, 0, 0, 1);
}

.switcher__option {
  --c: var(--c-content);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 16px;
  width: 68px;
  height: 100%;
  box-sizing: border-box;
  border-radius: 99em;
  opacity: 1;
  transition: all 160ms;
  cursor: pointer;
}

.switcher__option:hover {
  --c: var(--c-action);
}

.switcher__option:hover .switcher__icon {
  scale: 1.2;
}

.switcher__option:has(input:checked) {
  --c: var(--c-content);
  cursor: auto;
}

.switcher__option:has(input:checked) .switcher__icon {
  scale: 1;
}

.switcher__toggle {
  position: absolute;
  left: 4px;
  top: 4px;
  display: block;
  width: 84px;
  height: calc(100% - 10px);
  border-radius: 99em;
  background-color: color-mix(in srgb, var(--c-glass) 36%, transparent);
  z-index: -1;
  box-shadow: 
    inset 0 0 0 1px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 10%), transparent),
    inset 2px 1px 0px -1px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 90%), transparent), 
    inset -1.5px -1px 0px -1px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 80%), transparent), 
    inset -2px -6px 1px -5px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 60%), transparent), 
    inset -1px 2px 3px -1px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 20%), transparent), 
    inset 0px -4px 1px -2px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 10%), transparent), 
    0px 3px 6px 0px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 8%), transparent);
  transition: 
    background-color 400ms cubic-bezier(1, 0, 0.4, 1),
    box-shadow 400ms cubic-bezier(1, 0, 0.4, 1),
    translate 400ms cubic-bezier(1, 0, 0.4, 1);
}

.switcher:has(input[value="light"]:checked) .switcher__toggle {
  translate: 0 0;
  animation: scaleToggle 440ms ease;
}

.switcher:has(input[value="dark"]:checked) .switcher__toggle {
  translate: 76px 0;
  animation: scaleToggle 440ms ease;
}

@keyframes scaleToggle {
  0% { scale: 1 1; }
  50% { scale: 1.15 1; }
  100% { scale: 1 1; }
}

/* ============================
   Hero Section
   ============================ */
.hero {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100vh;
  padding: 2rem;
  text-align: center;
  gap: 4rem;
}

.hero__inner {
  max-width: 800px;
  flex: 1;
}

.hero__carousel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  overflow: hidden;
  position: relative;
  width: 100%;
}

.carousel__container {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.carousel__column {
  display: flex;
  flex-direction: column;
  gap: calc(1.5rem * var(--carousel-scale));
  width: clamp(200px, calc(22vw * var(--carousel-scale)), 400px);
  height: 100%;
  max-height: 100vh;
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(180deg, transparent 0%, black 15%, black 85%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, black 15%, black 85%, transparent 100%);
}

.carousel__column-track {
  display: flex;
  flex-direction: column;
  gap: calc(1.5rem * var(--carousel-scale));
  animation: scrollVertical linear infinite;
  will-change: transform;
}

.carousel__column-track.scroll-slow {
  animation-duration: 35s;
}

.carousel__column-track.scroll-medium {
  animation-duration: 38s;
  animation-direction: reverse;
}

.carousel__column-track.scroll-fast {
  animation-duration: 32s;
}

@keyframes scrollVertical {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(calc(-50% - 0.75rem * var(--carousel-scale)));
  }
}

.carousel__column img {
  width: 100%;
  height: auto;
  max-height: calc(520px * var(--carousel-scale));
  object-fit: contain;
  flex-shrink: 0;
}

.hero__title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

/* ============================
   Vertical Text Slide Show
   ============================ */
.vts {
  position: relative;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 2rem 0;
  overflow: hidden;
}

.vts__item {
  position: absolute;
  font-size: clamp(1.25rem, 4vw, 2rem);
  font-weight: 600;
  text-align: center;
  padding: 1rem;
  max-width: 600px;
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 1s ease-in-out, transform 1s ease-in-out;
}

.vts__item.is-active {
  opacity: 1;
  transform: translateY(0);
}

.vts__item.is-exiting {
  opacity: 0;
  transform: translateY(-20px);
}

/* ============================
   Call to Action Buttons
   ============================ */
.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 99em;
  transition: all 200ms ease;
  background: var(--c-action);
  color: var(--c-light);
  border: 2px solid var(--c-action);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--c-action) 30%, transparent);
}

.btn--ghost {
  background: transparent;
  color: var(--c-action);
  border: 2px solid var(--c-action);
}

.btn--ghost:hover {
  background: var(--c-action);
  color: var(--c-light);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--c-action) 30%, transparent);
}

/* ============================
   Marquee Section
   ============================ */
.marquee {
  position: relative;
  z-index: 1;
  width: 100%;
  overflow: hidden;
  padding: 2rem 0;
  background: color-mix(in srgb, var(--c-glass) 8%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.marquee__track {
  display: flex;
  gap: 2rem;
  animation: marquee 30s linear infinite;
  white-space: nowrap;
  font-size: 1.5rem;
  font-weight: 600;
}

.marquee__track span {
  display: inline-block;
}

@keyframes marquee {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* Duplicate track content for seamless loop */
.marquee__track::after {
  content: "Strength • Progress • Insights • Recovery • Programs • Personal Bests • Analytics • ";
  margin-left: 2rem;
}

/* ============================
   Content Cards
   ============================ */
.content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 4rem auto;
  padding: 2rem 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  padding: 2rem;
  border-radius: 1.5rem;
  background: color-mix(in srgb, var(--c-glass) 12%, transparent);
  backdrop-filter: blur(12px) saturate(var(--saturation));
  -webkit-backdrop-filter: blur(12px) saturate(var(--saturation));
  box-shadow: 
    inset 0 0 0 1px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 10%), transparent),
    0px 4px 12px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 8%), transparent);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 
    inset 0 0 0 1px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 10%), transparent),
    0px 12px 24px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 12%), transparent);
}

.card h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  font-weight: 700;
  color: var(--c-action);
}

.card p {
  line-height: 1.7;
  color: color-mix(in srgb, var(--c-content) 85%, var(--c-bg));
}

/* ============================
   Feature Cards (two-column liquid-glass) - updated sizing & spacing
   ============================ */
.card--feature {
  display: flex;
  align-items: center;
  gap: 3rem; /* slightly larger gap inside the card */
  padding: 5rem; /* bigger cards */
  height: 100%; /* take up full vertical space */
}

.card--feature:hover {
  transform: translateY(-4px);
  box-shadow:
    inset 0 0 0 1px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 10%), transparent),
    0px 12px 24px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 12%), transparent);
}

.card--feature .card__content {
  flex: 1 1 55%;
}

.card--feature .card__content h2 {
  margin-bottom: 0.75rem;
  font-size: clamp(1.6rem, 4.2vw, 2.25rem);
}

.card--feature .card__content p {
  font-size: 1.125rem;
  line-height: 1.8;
}

.card--feature .card__media {
  flex: 0 0 clamp(280px, 40%, 500px);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-left: auto;
  padding-left: 2rem;
}

.card__media-placeholder {
  width: 100%;
  height: clamp(220px, 28vw, 360px);
  border-radius: 1rem;
  background: linear-gradient(180deg, color-mix(in srgb, var(--c-glass) 18%, transparent), color-mix(in srgb, var(--c-glass) 10%, transparent));
  box-shadow: 0 10px 30px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 9%), transparent);
}

.card__media-img {
  width: 100%;
  height: auto;
  max-height: 500px;
  object-fit: contain;
  display: block;
  margin-bottom: 0;
  padding-bottom: 0;
}

@media (max-width: 700px) {
  .card--feature {
    flex-direction: column-reverse; /* media on top for stronger visuals */
    padding: 1.75rem;
    min-height: auto;
    gap: 1.25rem;
  }

  .card--feature .card__media {
    width: 100%;
    flex: none;
  }

  .card__media-placeholder {
    height: clamp(180px, 30vw, 340px);
    margin-bottom: 0;
  }
}

/* ============================
   Footer
   ============================ */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 3rem 2rem;
  font-size: 0.9rem;
  color: color-mix(in srgb, var(--c-content) 60%, var(--c-bg));
}

/* ============================
   Top-left Tab Bar (Home / About / Legal / Contact)
   ============================ */
.tabbar {
  position: fixed;
  top: 32px;
  left: 32px;
  right: auto;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 8px;
  width: auto;
  max-width: 500px;
  height: 70px;
  box-sizing: border-box;
  padding: 8px 12px 10px;
  margin: 0;
  border: none;
  border-radius: 99em;
  background-color: color-mix(in srgb, var(--c-glass) 12%, transparent);
  backdrop-filter: blur(8px) saturate(var(--saturation));
  -webkit-backdrop-filter: blur(8px) saturate(var(--saturation));
  box-shadow:
    inset 0 0 0 1px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 10%), transparent),
    inset 1.8px 3px 0px -2px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 90%), transparent),
    inset -2px -2px 0px -2px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 80%), transparent),
    inset -3px -8px 1px -6px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 60%), transparent),
    inset -0.3px -1px 4px 0px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 12%), transparent),
    inset -1.5px 2.5px 0px -2px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 20%), transparent),
    inset 0px 3px 4px -2px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 20%), transparent),
    inset 2px -6.5px 1px -4px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 10%), transparent),
    0px 1px 5px 0px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 10%), transparent),
    0px 6px 16px 0px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 8%), transparent);
  transition: background-color 400ms cubic-bezier(1, 0, 0.4, 1), box-shadow 400ms cubic-bezier(1, 0, 0.4, 1);
}

.tabbar__item {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 16px;
  width: auto;
  height: 100%;
  box-sizing: border-box;
  border-radius: 99em;
  color: var(--c-content);
  text-decoration: none;
  font-weight: 600;
  transition: all 160ms ease;
  opacity: 1;
  cursor: pointer;
}

.tabbar__item:hover {
  color: var(--c-action);
}

/* Active item visuals - exact same style as switcher toggle */
.tabbar__item.is-active {
  color: var(--c-content);
  background-color: color-mix(in srgb, var(--c-glass) 36%, transparent);
  box-shadow:
    inset 0 0 0 1px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 10%), transparent),
    inset 2px 1px 0px -1px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 90%), transparent),
    inset -1.5px -1px 0px -1px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 80%), transparent),
    inset -2px -6px 1px -5px color-mix(in srgb, var(--c-light) calc(var(--glass-reflex-light) * 60%), transparent),
    inset -1px 2px 3px -1px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 20%), transparent),
    inset 0px -4px 1px -2px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 10%), transparent),
    0px 3px 6px 0px color-mix(in srgb, var(--c-dark) calc(var(--glass-reflex-dark) * 8%), transparent);
  transition: all 160ms ease;
}


@media (max-width: 768px) {
  .switcher {
    top: 20px;
    right: 12px; /* keep on top-right for small screens */
    left: auto;
  }
  
  .hero {
    padding: 1rem;
    flex-direction: column;
  }

  .hero__carousel {
    display: none;
  }
  
  .content {
    grid-template-columns: 1fr;
    padding: 1rem;
  }
  
  .marquee__track {
    font-size: 1.25rem;
  }

  .tabbar {
    /* move slightly down on small screens to avoid overlap with hero content */
    top: 76px;
    left: 12px;
    right: auto;
    padding: 5px;
    gap: 2px;
  }
}

/* Force feature area to stack vertically and increase spacing between cards */
#features.content {
  /* ensure feature cards are full-width stacked */
  grid-template-columns: 1fr;
  gap: 20rem; /* Spacing between feature cards */
}