/* ── Features — ECM skin booster comparison ── */
.features {
  --features-content-max: min(1562px, 100%);
  --features-search-max: min(640px, 100%);
  --features-search-height: clamp(4.5rem, 6.25vw, 7.5rem);
  --features-search-border: clamp(3px, 0.26vw, 5px);
  --features-search-radius: clamp(0.875rem, 1.042vw, 1.25rem);
  --features-tab-radius: clamp(0.875rem, 1.042vw, 1.25rem);
  --features-tab-height: clamp(3.5rem, 4.688vw, 5.625rem);
  --features-tab-gap: clamp(0.75rem, 1.042vw, 1.25rem);
  --features-panel-radius: clamp(0.875rem, 1.042vw, 1.25rem);
  --features-panel-min-height: clamp(22rem, 39.79vw, 47.75rem);
  --features-media-ratio: 684 / 764;
  --features-body-color: #333333;
  --features-panel-sign-width: clamp(0.625rem, 0.656vw, 0.7875rem);
  --features-panel-name-gap: clamp(0.75rem, 1.04vw, 1.375rem);
  --features-reveal-delay-bar: 200ms;
  --features-reveal-delay-tab: 800ms;
  --features-reveal-delay-tab-stagger: 200ms;
  --features-reveal-delay-title: 1800ms;
  --features-reveal-delay-panel: 2000ms;
  --features-reveal-delay-panel-inner: 2200ms;

  overflow-x: clip;
  background-color: var(--color-warm);
}

.features__inner {
  width: var(--features-content-max);
  max-width: calc(100% - var(--gutter) * 2);
  margin-inline: auto;
  padding-block: clamp(3rem, 10.42vw, 12.5rem);
}

/* Search bar (decorative) */
.features__search {
  display: flex;
  justify-content: center;
  width: 100%;
}

.features__search-bar {
  position: relative;
  display: flex;
  align-items: stretch;
  width: min(var(--features-search-max), 100%);
  min-height: var(--features-search-height);
}

.features__search-field {
  display: flex;
  flex: 1;
  align-items: center;
  min-width: 0;
  padding-inline: clamp(1.5rem, 3.49vw, 4.1875rem);
  padding-inline-end: clamp(4.5rem, 6.25vw, 7.5rem);
  border: var(--features-search-border) solid var(--color-darkgray);
  border-radius: var(--features-search-radius);
  background-color: var(--color-white);
}

.features__search-text {
  display: flex;
  align-items: center;
  min-width: 0;
  font-size: var(--text-h2);
  font-weight: 700;
  line-height: var(--text-h2-lh);
  letter-spacing: var(--letter-tight);
  color: var(--color-darkgray);
  white-space: nowrap;
}

.features__search-cursor {
  flex-shrink: 0;
  margin-inline-start: 0.05em;
  animation: features-cursor-blink 1s step-end infinite;
}

@keyframes features-cursor-blink {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

.features__search-btn {
  position: absolute;
  top: 50%;
  right: 0;
  flex-shrink: 0;
  width: var(--features-search-height);
  height: var(--features-search-height);
  transform: translateY(-50%);
  pointer-events: none;
}

.features__search-btn img {
  width: 100%;
  height: 100%;
}

/* Subtitle */
.features__title {
  margin-top: clamp(1rem, 1.04vw, 1.25rem);
  font-size: var(--text-h2);
  font-weight: 700;
  line-height: var(--text-h2-lh);
  letter-spacing: var(--letter-tight);
  text-align: center;
  color: var(--color-black);
}

/* Tabs */
.features__tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--features-tab-gap);
  margin-top: clamp(2.5rem, 5.21vw, 6.25rem);
}

.features__tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: clamp(8rem, 12.5vw, 15rem);
  min-height: var(--features-tab-height);
  padding: clamp(0.875rem, 1.04vw, 1.25rem) clamp(2rem, 5.21vw, 6.25rem);
  border: 1px solid var(--color-border);
  border-radius: var(--features-tab-radius);
  background-color: rgb(255 255 255 / 0.4);
  font-family: var(--font-family);
  font-size: var(--text-subtitle);
  font-weight: 700;
  line-height: var(--text-subtitle-lh);
  letter-spacing: var(--letter-tight);
  color: var(--color-dark);
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
}

.features__tab.is-active {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: var(--color-white);
}

.features__tab:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Panel carousel */
.features__panels {
  position: relative;
  margin-top: clamp(1.5rem, 3.07vw, 3.6875rem);
}

.features__panel {
  display: grid;
  grid-template-columns: minmax(0, 43.79%) minmax(0, 1fr);
  min-height: var(--features-panel-min-height);
  border: 1px solid var(--color-border);
  border-radius: var(--features-panel-radius);
  background-color: var(--color-white);
  box-shadow: 0 1px 100px rgb(23 23 23 / 0.06);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.35s ease,
    visibility 0.35s ease;
  pointer-events: none;
}

.features__panel.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.features__panel:not(.is-active) {
  position: absolute;
  inset: 0;
}

.features__panel-media {
  position: relative;
  min-height: 0;
  overflow: hidden;
  border-radius: var(--features-panel-radius) 0 0 var(--features-panel-radius);
}

.features__panel-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.features__panel-caption {
  position: absolute;
  left: clamp(1rem, 2.08vw, 2.5rem);
  bottom: clamp(1rem, 2.08vw, 2.5rem);
  font-size: clamp(1.5rem, 2.08vw, 2.5rem);
  font-weight: 300;
  line-height: 1.5;
  letter-spacing: 0.2em;
  color: var(--color-dark);
  text-transform: capitalize;
}

.features__panel[data-features-panel="renuva"] .features__panel-caption {
  color: var(--color-white);
}

.features__panel[data-features-panel="re2o"] .features__panel-caption {
  color: var(--color-dark);
}

.features__panel-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(1.5rem, 2.6vw, 3.5rem);
  min-width: 0;
  padding: clamp(2rem, 4.17vw, 5rem) clamp(1.5rem, 3.65vw, 4.6875rem);
}

.features__panel-head {
  display: flex;
  align-items: flex-start;
  gap: var(--features-panel-name-gap);
}

.features__panel-head--stacked {
  flex-direction: column;
  align-items: stretch;
  gap: clamp(0.5rem, 0.65vw, 0.75rem);
}

.features__panel-name-row {
  display: flex;
  align-items: flex-start;
  gap: var(--features-panel-name-gap);
}

.features__panel-sign {
  flex-shrink: 0;
  align-self: flex-start;
  width: var(--features-panel-sign-width);
  margin-top: clamp(0.5rem, 0.94vw, 1.125rem);
}

.features__panel-eyebrow {
  font-size: var(--text-body-md);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: var(--letter-tight);
  color: var(--color-primary);
}

.features__panel-name {
  font-size: var(--text-title-large);
  font-weight: 700;
  line-height: var(--text-title-large-lh);
  letter-spacing: var(--letter-tight);
  color: var(--features-body-color);
}

.features__detail {
  display: flex;
  flex-direction: column;
  gap: clamp(0.25rem, 0.52vw, 0.5rem);
  font-size: var(--text-subtitle);
  font-weight: 400;
  line-height: var(--text-subtitle-lh);
  letter-spacing: var(--letter-tight);
  color: var(--features-body-color);
}

.features__detail-label {
  font-weight: 700;
}

.features__detail-line--underline {
  text-decoration: underline;
}

.features__detail-line--accent {
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

/* CTA */
.features__cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(1.5rem, 5.52vw, 6.625rem);
  margin-top: clamp(2.5rem, 5.52vw, 6.625rem);
  text-align: center;
}

.features__cta-copy {
  max-width: min(549px, 100%);
  font-size: var(--text-h2);
  font-weight: 700;
  line-height: var(--text-h2-lh);
  letter-spacing: var(--letter-tight);
  color: var(--color-black);
}

.features__cta-line {
  display: inline-block;
  white-space: nowrap;
}

.features__cta .btn {
  width: min(640px, 100%);
}

/* ── Scroll reveal ── */
.features:not(.is-revealed) .features__search-bar,
.features:not(.is-revealed) .features__title,
.features:not(.is-revealed) .features__tab,
.features:not(.is-revealed) .features__panel.is-active {
  opacity: 0;
  transform: translateY(var(--motion-reveal-distance));
  pointer-events: none;
}

.features:not(.is-revealed) .features__search-field {
  clip-path: inset(0 100% 0 0 round var(--features-search-radius));
}

.features:not(.is-revealed) .features__search-btn {
  opacity: 0;
}

.features:not(.is-revealed) .features__search-cursor {
  opacity: 0;
  animation: none;
}

.features:not(.is-revealed) .features__search-bar {
  transform: translateY(var(--motion-reveal-distance)) scale(0.98);
}

.features:not(.is-revealed) .features__panel.is-active .features__panel-media,
.features:not(.is-revealed) .features__panel.is-active .features__panel-head,
.features:not(.is-revealed) .features__panel.is-active .features__panel-body > .features__detail {
  opacity: 0;
  transform: translateY(0.75rem);
}

.features.is-revealed .features__search-bar {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition:
    opacity var(--motion-reveal-duration) var(--motion-reveal-ease),
    transform var(--motion-reveal-duration) var(--motion-reveal-ease);
  transition-delay: var(--features-reveal-delay-bar);
}

.features.is-revealed .features__search-field {
  clip-path: inset(0 0 0 0 round var(--features-search-radius));
  transition: clip-path 0.75s var(--motion-reveal-ease);
  transition-delay: var(--features-reveal-delay-bar);
}

.features.is-revealed .features__search-btn {
  opacity: 1;
  transition: opacity 0.5s var(--motion-reveal-ease);
  transition-delay: 500ms;
}

.features.is-revealed .features__search-cursor {
  opacity: 1;
  animation: features-cursor-blink 1s step-end infinite;
  transition: opacity 0.2s ease 350ms;
}

.features.is-revealed .features__tab {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  transition:
    opacity 0.6s var(--motion-reveal-ease),
    transform 0.6s var(--motion-reveal-ease),
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
}

.features.is-revealed .features__tab:nth-child(1) {
  transition-delay: var(--features-reveal-delay-tab), var(--features-reveal-delay-tab),
    0ms, 0ms, 0ms;
}

.features.is-revealed .features__tab:nth-child(2) {
  transition-delay: calc(var(--features-reveal-delay-tab) + var(--features-reveal-delay-tab-stagger)),
    calc(var(--features-reveal-delay-tab) + var(--features-reveal-delay-tab-stagger)), 0ms, 0ms,
    0ms;
}

.features.is-revealed .features__tab:nth-child(3) {
  transition-delay: calc(var(--features-reveal-delay-tab) + var(--features-reveal-delay-tab-stagger) * 2),
    calc(var(--features-reveal-delay-tab) + var(--features-reveal-delay-tab-stagger) * 2), 0ms,
    0ms, 0ms;
}

.features.is-revealed .features__title {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 0.65s var(--motion-reveal-ease),
    transform 0.65s var(--motion-reveal-ease);
  transition-delay: var(--features-reveal-delay-title);
}

.features.is-revealed:not(.is-panel-ready) .features__panel.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
  transition:
    opacity 0.8s var(--motion-reveal-ease),
    transform 0.8s var(--motion-reveal-ease),
    visibility 0s linear;
  transition-delay: var(--features-reveal-delay-panel);
}

.features.is-revealed:not(.is-panel-ready) .features__panel.is-active .features__panel-media {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 0.65s var(--motion-reveal-ease),
    transform 0.65s var(--motion-reveal-ease);
  transition-delay: var(--features-reveal-delay-panel-inner);
}

.features.is-revealed:not(.is-panel-ready) .features__panel.is-active .features__panel-head {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 0.65s var(--motion-reveal-ease),
    transform 0.65s var(--motion-reveal-ease);
  transition-delay: calc(var(--features-reveal-delay-panel-inner) + 80ms);
}

.features.is-revealed:not(.is-panel-ready) .features__panel.is-active .features__panel-body > .features__detail:nth-child(2) {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 0.65s var(--motion-reveal-ease),
    transform 0.65s var(--motion-reveal-ease);
  transition-delay: calc(var(--features-reveal-delay-panel-inner) + 160ms);
}

.features.is-revealed:not(.is-panel-ready) .features__panel.is-active .features__panel-body > .features__detail:nth-child(3) {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 0.65s var(--motion-reveal-ease),
    transform 0.65s var(--motion-reveal-ease);
  transition-delay: calc(var(--features-reveal-delay-panel-inner) + 240ms);
}

.features.is-panel-ready .features__panel {
  transform: none;
  transition:
    opacity 0.35s ease,
    visibility 0.35s ease;
  transition-delay: 0ms;
}

.features.is-panel-ready .features__panel.is-active {
  transform: none;
}

.features.is-panel-ready .features__panel.is-active .features__panel-media,
.features.is-panel-ready .features__panel.is-active .features__panel-head,
.features.is-panel-ready .features__panel.is-active .features__panel-body > .features__detail {
  opacity: 1;
  transform: none;
  transition: none;
}

@media (max-width: 1024px) {
  .features__panel {
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
  }

  .features__panel-media {
    aspect-ratio: var(--features-media-ratio);
    border-radius: var(--features-panel-radius) var(--features-panel-radius) 0 0;
  }

  .features__panel-body {
    padding-block: clamp(1.75rem, 5vw, 2.5rem);
    padding-inline: clamp(1.5rem, 4vw, 2.25rem);
  }
}

@media (max-width: 767px) {
  .features__inner {
    padding-block: clamp(2.5rem, 12vw, 3.5rem);
  }

  .features__search-text {
    font-size: clamp(1rem, 4vw, 1.375rem);
  }

  .features__tabs {
    margin-top: clamp(1.5rem, 6vw, 2.5rem);
  }

  .features__tab {
    flex: 1 1 calc(50% - var(--features-tab-gap) / 2);
    min-width: 0;
    padding-inline: clamp(1rem, 4vw, 1.5rem);
  }

  .features__panel-name {
    font-size: clamp(1.75rem, 7vw, 2.5rem);
  }

  .features__cta-copy br {
    display: none;
  }

  .features__cta-line {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .features:not(.is-revealed) .features__search-bar,
  .features:not(.is-revealed) .features__title,
  .features:not(.is-revealed) .features__tab,
  .features:not(.is-revealed) .features__panel.is-active {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .features:not(.is-revealed) .features__search-field {
    clip-path: none;
  }

  .features:not(.is-revealed) .features__search-btn,
  .features:not(.is-revealed) .features__search-cursor {
    opacity: 1;
  }

  .features:not(.is-revealed) .features__panel.is-active .features__panel-media,
  .features:not(.is-revealed) .features__panel.is-active .features__panel-head,
  .features:not(.is-revealed) .features__panel.is-active .features__panel-body > .features__detail {
    opacity: 1;
    transform: none;
  }

  .features__search-cursor {
    animation: none;
  }

  .features__panel,
  .features.is-revealed .features__search-bar,
  .features.is-revealed .features__search-field,
  .features.is-revealed .features__search-btn,
  .features.is-revealed .features__tab,
  .features.is-revealed .features__title,
  .features.is-revealed:not(.is-panel-ready) .features__panel.is-active,
  .features.is-revealed:not(.is-panel-ready) .features__panel.is-active .features__panel-media,
  .features.is-revealed:not(.is-panel-ready) .features__panel.is-active .features__panel-head,
  .features.is-revealed:not(.is-panel-ready) .features__panel.is-active .features__panel-body > .features__detail {
    transition: none;
  }
}