/* =========================================================
   AASTHA PREMIUM V4 — FINAL ART-DIRECTION PREVIEW
   ---------------------------------------------------------
   PREVIEW ONLY. This layer deliberately sits after V3.

   Final approved direction:
   - Dark: blackened espresso + oxblood + antique champagne
   - Light: warm stone + oxblood + aged bronze
   - sharp editorial geometry, restrained fashion-house polish
   - medium motion, never scroll-jacking
   - dermatologist credibility remains the primary hierarchy
   ========================================================= */

body.release-v24 {
  --v4-serif: "Iowan Old Style", Baskerville, "Palatino Linotype", Palatino, Georgia, serif;
  --v4-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --v4-bg: #eee8dd;
  --v4-paper: #f8f4ec;
  --v4-surface: #fffaf3;
  --v4-ink: #151311;
  --v4-ink-soft: #342e2a;
  --v4-muted: #746a62;
  --v4-accent: #702433;
  --v4-accent-deep: #531827;
  --v4-metal: #9d7658;
  --v4-metal-soft: #c8ad91;
  --v4-line: rgba(21, 19, 17, .17);
  --v4-line-soft: rgba(21, 19, 17, .09);
  --v4-shadow: 0 28px 80px rgba(36, 24, 18, .08);

  /* Bridge prior preview layers to the final palette. */
  --v3-bone: var(--v4-bg);
  --v3-paper: var(--v4-paper);
  --v3-white: var(--v4-surface);
  --v3-ink: var(--v4-ink);
  --v3-ink-soft: var(--v4-ink-soft);
  --v3-muted: var(--v4-muted);
  --v3-wine: var(--v4-accent);
  --v3-wine-deep: var(--v4-accent-deep);
  --v3-brass: var(--v4-metal);
  --v3-line: var(--v4-line);
  --v3-line-soft: var(--v4-line-soft);
  --lux-bone: var(--v4-bg);
  --lux-paper: var(--v4-paper);
  --lux-white: var(--v4-surface);
  --lux-ink: var(--v4-ink);
  --lux-muted: var(--v4-muted);
  --lux-wine: var(--v4-accent);
  --lux-wine-dark: var(--v4-accent-deep);
  --lux-brass: var(--v4-metal);
  --lux-line: var(--v4-line);
  --lux-line-soft: var(--v4-line-soft);

  background: var(--v4-bg);
  color: var(--v4-ink);
  text-rendering: optimizeLegibility;
}

html[data-theme="dark"] body.release-v24 {
  --v4-bg: #100f0e;
  --v4-paper: #141311;
  --v4-surface: #1b1917;
  --v4-ink: #f4ede3;
  --v4-ink-soft: #ddd3c7;
  --v4-muted: #a99d92;
  --v4-accent: #7b203c;
  --v4-accent-deep: #941f49;
  --v4-metal: #c3a16b;
  --v4-metal-soft: #ddc796;
  --v4-line: rgba(231, 215, 196, .21);
  --v4-line-soft: rgba(231, 215, 196, .11);
  --v4-shadow: 0 34px 100px rgba(0, 0, 0, .34);
}

/* ---------- Brand typography and geometry ---------- */
body.release-v24 h1,
body.release-v24 h2,
body.release-v24 h3,
body.release-v24 h4,
body.release-v24 .display-serif {
  font-family: var(--v4-serif);
  font-weight: 500;
  font-kerning: normal;
}

body.release-v24 .quiet-label,
body.release-v24 .eyebrow,
body.release-v24 .section-kicker {
  color: var(--v4-accent);
  font-family: var(--v4-sans);
  font-weight: 720;
  letter-spacing: .17em;
  text-transform: uppercase;
}

html[data-theme="dark"] body.release-v24 .quiet-label,
html[data-theme="dark"] body.release-v24 .eyebrow,
html[data-theme="dark"] body.release-v24 .section-kicker {
  color: var(--v4-metal-soft);
}

/* ---------- Header: couture restraint ---------- */
body.release-v24 .topbar {
  background: var(--v4-ink);
  border: 0;
}
html[data-theme="dark"] body.release-v24 .topbar { background: #090908; }

body.release-v24 .site-header {
  background: color-mix(in srgb, var(--v4-paper) 92%, transparent);
  border-bottom: 1px solid var(--v4-line-soft);
  box-shadow: none;
  transition: background .32s ease, border-color .32s ease, box-shadow .32s ease;
}
html[data-theme="dark"] body.release-v24 .site-header {
  background: rgba(16, 15, 14, .88);
}

body.release-v24 .nav-shell,
body.release-v24 .brand .brand-mark,
body.release-v24 .brand strong {
  transition: min-height .28s ease, height .28s ease, font-size .28s ease, opacity .28s ease;
}
body.release-v24.v4-scrolled .site-header {
  background: color-mix(in srgb, var(--v4-paper) 96%, transparent);
  box-shadow: 0 10px 42px rgba(25, 16, 12, .055);
}
html[data-theme="dark"] body.release-v24.v4-scrolled .site-header {
  background: rgba(13, 12, 11, .95);
  box-shadow: 0 12px 48px rgba(0, 0, 0, .28);
}
body.release-v24.v4-scrolled .nav-shell { min-height: 66px; }
body.release-v24.v4-scrolled .brand .brand-mark { height: 40px; }
body.release-v24.v4-scrolled .brand strong { font-size: .96rem; }

body.release-v24 .primary-nav > a:not(.button),
body.release-v24 .nav-item > button {
  position: relative;
  color: var(--v4-ink-soft);
}
body.release-v24 .primary-nav > a:not(.button)::before,
body.release-v24 .nav-item > button::before {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 7px;
  height: 1px;
  background: var(--v4-metal);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .28s cubic-bezier(.2,.7,.2,1);
}
body.release-v24 .primary-nav > a:not(.button):hover::before,
body.release-v24 .primary-nav > a:not(.button):focus-visible::before,
body.release-v24 .primary-nav > a.is-current::before,
body.release-v24 .nav-item > button:hover::before,
body.release-v24 .nav-item > button[aria-expanded="true"]::before {
  transform: scaleX(1);
  transform-origin: left;
}

/* ---------- Buttons: sharp, low-chrome, tactile ---------- */
body.release-v24 .button,
body.release-v24 a.button,
body.release-v24 button.button {
  position: relative;
  overflow: hidden;
  border-radius: 1px;
  background: var(--v4-accent);
  border-color: var(--v4-accent);
  box-shadow: none;
  transition: color .24s ease, background .24s ease, border-color .24s ease, transform .24s ease;
}
body.release-v24 .button::after,
body.release-v24 a.button::after,
body.release-v24 button.button::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 18%, rgba(255,255,255,.10) 48%, transparent 78%);
  transform: translateX(-120%);
  transition: transform .55s cubic-bezier(.2,.7,.2,1);
  pointer-events: none;
}
body.release-v24 .button:hover::after,
body.release-v24 a.button:hover::after,
body.release-v24 button.button:hover::after { transform: translateX(120%); }
body.release-v24 .button:hover,
body.release-v24 a.button:hover,
body.release-v24 button.button:hover {
  background: var(--v4-accent-deep);
  border-color: var(--v4-accent-deep);
  transform: translateY(-1px);
}
body.release-v24 .button-secondary,
body.release-v24 a.button-secondary {
  color: var(--v4-ink) !important;
  background: transparent;
  border-color: var(--v4-line);
}
html[data-theme="dark"] body.release-v24 .button-secondary,
html[data-theme="dark"] body.release-v24 a.button-secondary {
  color: var(--v4-ink) !important;
  border-color: rgba(244, 237, 227, .34);
}

/* ---------- Homepage: sharper editorial composition ---------- */
body.cms-home-page,
body.cms-home-page .home-main,
body.cms-home-page .home-hero { background: var(--v4-bg); }

body.cms-home-page .home-hero {
  border-bottom: 1px solid var(--v4-line);
}
body.cms-home-page .home-hero h1 {
  color: var(--v4-ink);
  letter-spacing: -.071em;
}
body.cms-home-page .home-hero h1 em {
  color: var(--v4-accent);
  font-style: italic;
}
html[data-theme="dark"] body.cms-home-page .home-hero h1 em { color: var(--v4-metal-soft); }

body.cms-home-page .home-hero .lead,
body.cms-home-page .section-heading p,
body.cms-home-page .concern-card p,
body.cms-home-page .treatment-card p,
body.cms-home-page .why-card p { color: var(--v4-muted); }

body.cms-home-page .home-hero-media,
body.cms-home-page .doctor-visual,
body.cms-home-page .treatment-card img {
  border-radius: 0;
}
body.cms-home-page .home-hero-media > img,
body.cms-home-page .doctor-visual img,
body.cms-home-page .treatment-card img {
  transition: filter .45s ease, transform .65s cubic-bezier(.2,.7,.2,1), clip-path .85s cubic-bezier(.2,.7,.2,1);
}
body.cms-home-page .home-hero-media:hover > img.v3-real-photo,
body.cms-home-page .doctor-visual:hover img.v3-real-photo,
body.cms-home-page .treatment-card:hover img.v3-real-photo {
  transform: scale(1.012);
}
html[data-theme="dark"] body.cms-home-page .home-hero-media > img.v3-real-photo,
html[data-theme="dark"] body.cms-home-page .doctor-visual img.v3-real-photo,
html[data-theme="dark"] body.cms-home-page .treatment-card img.v3-real-photo {
  filter: saturate(.78) contrast(1.07) brightness(.88);
}

body.cms-home-page .hero-booking-card {
  border: 1px solid var(--v4-line);
  border-radius: 1px;
  background: color-mix(in srgb, var(--v4-surface) 96%, transparent);
  box-shadow: var(--v4-shadow);
  backdrop-filter: blur(20px);
}
html[data-theme="dark"] body.cms-home-page .hero-booking-card {
  background: rgba(27,25,23,.94);
}

body.cms-home-page .trust-ribbon,
body.cms-home-page .why-grid { border-color: var(--v4-line); }

body.cms-home-page .concern-card,
body.cms-home-page .why-card {
  border-color: var(--v4-line);
}
body.cms-home-page .concern-card,
body.cms-home-page .treatment-card,
body.cms-home-page .location-pro-card {
  transition: transform .32s cubic-bezier(.2,.7,.2,1), opacity .32s ease;
}
body.cms-home-page .concern-card:hover,
body.cms-home-page .treatment-card:hover { transform: translateY(-4px); }

body.cms-home-page .doctor-section,
body.cms-home-page .doctor-feature-section,
body.cms-home-page .home-section--dark {
  background: #181613;
}
html[data-theme="dark"] body.cms-home-page .doctor-section,
html[data-theme="dark"] body.cms-home-page .doctor-feature-section,
html[data-theme="dark"] body.cms-home-page .home-section--dark {
  background: #0b0b0a;
}
body.cms-home-page .doctor-copy h2,
body.cms-home-page .doctor-copy p,
body.cms-home-page .doctor-copy .doctor-role,
body.cms-home-page .doctor-points li { color: #f4ede3; }

/* Treatment cards feel like editorial objects, not app cards. */
body.cms-home-page .treatment-card-body { border-top: 1px solid var(--v4-line); }
body.cms-home-page .treatment-card h3 { color: var(--v4-ink); }
body.cms-home-page .text-link {
  color: var(--v4-accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--v4-accent) 45%, transparent);
  padding-bottom: 2px;
}
html[data-theme="dark"] body.cms-home-page .text-link { color: var(--v4-metal-soft); }

/* ---------- Inner pages: dark and light are equally intentional ---------- */
body.release-v24:not(.cms-home-page),
body.release-v24:not(.cms-home-page) main { background: var(--v4-paper); }
body.release-v24:not(.cms-home-page) .page-hero,
body.release-v24:not(.cms-home-page) .page-hero.page-hero--professional {
  background: var(--v4-bg);
  border-color: var(--v4-line);
}
body.release-v24:not(.cms-home-page) .page-hero-copy h1,
body.release-v24:not(.cms-home-page) .prose > h2,
body.release-v24:not(.cms-home-page) .prose > h3,
body.release-v24:not(.cms-home-page) details summary { color: var(--v4-ink); }
body.release-v24:not(.cms-home-page) .page-hero-copy .lead,
body.release-v24:not(.cms-home-page) .prose,
body.release-v24:not(.cms-home-page) .prose li,
body.release-v24:not(.cms-home-page) .feature-list li { color: var(--v4-ink-soft); }

body.release-v24:not(.cms-home-page) .page-hero-art,
body.release-v24:not(.cms-home-page) .sidebar-card,
body.release-v24:not(.cms-home-page) .form-card,
body.release-v24:not(.cms-home-page) .appointment-form,
body.release-v24:not(.cms-home-page) .location-pro-card {
  border-radius: 0;
  border-color: var(--v4-line);
  background: var(--v4-surface);
  box-shadow: none;
}
html[data-theme="dark"] body.release-v24:not(.cms-home-page) .page-hero-art { background: #211e1a; }

body.release-v24:not(.cms-home-page) .sidebar-card {
  box-shadow: 0 22px 80px rgba(37,24,18,.045);
}
html[data-theme="dark"] body.release-v24:not(.cms-home-page) .sidebar-card {
  box-shadow: 0 26px 90px rgba(0,0,0,.26);
}

body.release-v24:not(.cms-home-page) .prose > h2::after,
body.release-v24:not(.cms-home-page) .prose li::before,
body.release-v24:not(.cms-home-page) .feature-list li::before {
  background: var(--v4-metal);
}
body.release-v24:not(.cms-home-page) .prose a,
body.release-v24:not(.cms-home-page) .faq-pro-list summary::after { color: var(--v4-accent); }
html[data-theme="dark"] body.release-v24:not(.cms-home-page) .prose a,
html[data-theme="dark"] body.release-v24:not(.cms-home-page) .faq-pro-list summary::after { color: var(--v4-metal-soft); }

/* Clinical galleries: jewellery-box framing, without pretending a composite is a true slider. */
body.release-v24 .clinical-results {
  --results-border: var(--v4-line);
  --results-panel: var(--v4-surface);
  --results-muted: var(--v4-muted);
}
body.release-v24 .clinical-results__inner {
  border-radius: 0;
  border-color: var(--v4-line);
  background: var(--v4-surface);
  box-shadow: none;
}
body.release-v24 .clinical-results__viewport {
  border-radius: 0;
  border-color: var(--v4-line);
  background: color-mix(in srgb, var(--v4-bg) 86%, #0000);
}
body.release-v24 .clinical-results__button {
  border-radius: 0;
  border-color: var(--v4-line);
  color: var(--v4-ink);
  background: transparent;
}
body.release-v24 .clinical-results__button:hover,
body.release-v24 .clinical-results__button:focus-visible {
  color: #fff;
  background: var(--v4-accent);
}
html[data-theme="dark"] body.release-v24 .clinical-results__slide img,
html[data-theme="dark"] body.release-v24 .clinical-results__viewport { background: #0d0c0b; }

/* Future real before/after pair component. It is activated only when distinct
   before and after media are supplied in Wagtail; no clinical result is faked. */
.v4-before-after {
  --v4-compare: 50%;
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--v4-line);
  background: var(--v4-surface);
  touch-action: pan-y;
}
.v4-before-after [data-before-image],
.v4-before-after [data-after-image] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.v4-before-after [data-after-image] { clip-path: inset(0 0 0 var(--v4-compare)); }
.v4-before-after::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--v4-compare);
  width: 1px;
  background: rgba(255,255,255,.92);
  box-shadow: 0 0 0 1px rgba(0,0,0,.12);
  pointer-events: none;
}
.v4-before-after input[type="range"] {
  position: absolute;
  inset: 0;
  z-index: 3;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: ew-resize;
}
.v4-before-after__handle {
  position: absolute;
  z-index: 2;
  left: var(--v4-compare);
  top: 50%;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.82);
  border-radius: 50%;
  background: rgba(16,15,14,.78);
  color: #fff;
  transform: translate(-50%, -50%);
  pointer-events: none;
  backdrop-filter: blur(10px);
}

/* ---------- Reading progress rail for long clinical pages ---------- */
.v4-reading-progress {
  position: fixed;
  z-index: 20;
  top: 50%;
  left: max(18px, calc((100vw - 1500px) / 2));
  width: 132px;
  transform: translateY(-50%);
  opacity: .82;
}
.v4-reading-progress::before {
  content: "On this page";
  display: block;
  margin-bottom: 13px;
  color: var(--v4-muted);
  font-size: .56rem;
  font-weight: 720;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.v4-reading-progress a {
  display: block;
  padding: 7px 0 7px 13px;
  border-left: 1px solid var(--v4-line);
  color: var(--v4-muted);
  font-size: .64rem;
  line-height: 1.25;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease, padding-left .2s ease;
}
.v4-reading-progress a[aria-current="true"] {
  padding-left: 17px;
  border-left-color: var(--v4-metal);
  color: var(--v4-ink);
}

/* ---------- Treatment carousel controls ---------- */
.v4-carousel-controls {
  display: none;
  align-items: center;
  justify-content: flex-end;
  gap: 9px;
  margin-top: 22px;
}
.v4-carousel-button {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--v4-line);
  border-radius: 50%;
  background: transparent;
  color: var(--v4-ink);
  cursor: pointer;
}
.v4-carousel-button:hover,
.v4-carousel-button:focus-visible {
  border-color: var(--v4-metal);
  color: var(--v4-accent);
}
.v4-carousel-progress {
  width: 72px;
  height: 1px;
  overflow: hidden;
  background: var(--v4-line);
}
.v4-carousel-progress > span {
  display: block;
  width: var(--v4-progress, 25%);
  height: 100%;
  background: var(--v4-metal);
  transition: width .25s ease;
}

/* ---------- Reveal choreography ---------- */
@media (prefers-reduced-motion: no-preference) {
  body.release-v24 .v4-reveal {
    opacity: 0;
    transform: translateY(22px);
    transition:
      opacity .72s cubic-bezier(.2,.7,.2,1) calc(var(--v4-delay, 0) * 70ms),
      transform .72s cubic-bezier(.2,.7,.2,1) calc(var(--v4-delay, 0) * 70ms);
  }
  body.release-v24 .v4-reveal.v4-visible {
    opacity: 1;
    transform: translateY(0);
  }
  body.release-v24 .v4-image-reveal {
    clip-path: inset(0 0 100% 0);
    transition: clip-path .95s cubic-bezier(.16,.78,.24,1) .08s;
  }
  body.release-v24 .v4-image-reveal.v4-visible { clip-path: inset(0); }
  body.release-v24 details[open] > :not(summary) {
    animation: v4-detail-in .28s ease both;
  }
  @keyframes v4-detail-in {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

/* ---------- Focus treatment ---------- */
body.release-v24 :focus-visible {
  outline: 2px solid var(--v4-metal);
  outline-offset: 4px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1320px) {
  .v4-reading-progress { display: none; }
}

@media (max-width: 700px) {
  body.release-v24.v4-scrolled .nav-shell { min-height: 64px; }

  body.cms-home-page .treatment-grid.v4-carousel-ready {
    display: flex;
    width: auto;
    gap: 18px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    overscroll-behavior-inline: contain;
    scrollbar-width: none;
    padding-right: 11vw;
  }
  body.cms-home-page .treatment-grid.v4-carousel-ready::-webkit-scrollbar { display: none; }
  body.cms-home-page .treatment-grid.v4-carousel-ready .treatment-card {
    flex: 0 0 min(82vw, 360px);
    scroll-snap-align: start;
    transform: none;
  }
  body.cms-home-page .treatment-grid.v4-carousel-ready .treatment-card img { aspect-ratio: 4 / 5; }
  .v4-carousel-controls { display: flex; }

  .v4-before-after { aspect-ratio: 4 / 5; }
}

@media (prefers-reduced-motion: reduce) {
  body.release-v24 *,
  body.release-v24 *::before,
  body.release-v24 *::after {
    scroll-behavior: auto !important;
  }
  body.release-v24 .v4-reveal,
  body.release-v24 .v4-image-reveal {
    opacity: 1 !important;
    transform: none !important;
    clip-path: none !important;
    transition: none !important;
  }
}