/* ============================================================
   EXOSOME THERAPY — MAIN STYLESHEET
   ============================================================ */

/* ----------------------------
   CSS VARIABLES & RESET
---------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --teal:        #2AACAA;
  --teal-dark:   #1E8A88;
  --teal-light:  #E6F7F7;
  --white:       #FFFFFF;
  --off-white:   #F8FAFA;
  --dark:        #1A2A2A;
  --gray:        #5A6A6A;
  --gray-light:  #E8EEEE;
  --font-head:   'Playfair Display', Georgia, serif;
  --font-body:   'DM Sans', sans-serif;
  --radius:      12px;
  --shadow:      0 4px 24px rgba(42,172,170,.12);
  --transition:  .3s ease;
  --container:   1160px;
}

html  { scroll-behavior: smooth; }
body  { font-family: var(--font-body); color: var(--dark); background: var(--white); line-height: 1.6; }
img   { max-width: 100%; display: block; height: auto; }
a     { color: inherit; text-decoration: none; }
ul    { list-style: none; }
button { font-family: var(--font-body); cursor: pointer; }

/* ----------------------------
   UTILITIES
---------------------------- */
.container     { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section       { padding: 80px 0; }
.section--gray { background: var(--off-white); }
.section--teal { background: var(--teal); color: var(--white); }
.section--dark { background: var(--dark); color: var(--white); }

.tag {
  display: inline-block;
  background: var(--teal-light);
  color: var(--teal-dark);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 18px;
}

.section-sub {
  font-size: 1rem;
  color: var(--gray);
  max-width: 560px;
}

.center             { text-align: center; }
.center .section-sub { margin: 0 auto; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn--primary { background: var(--teal); color: var(--white); }
.btn--primary:hover { background: var(--teal-dark); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn--outline { background: transparent; color: var(--teal); border: 2px solid var(--teal); }
.btn--outline:hover { background: var(--teal); color: var(--white); }
.btn--white   { background: var(--white); color: var(--teal); }
.btn--white:hover { background: var(--teal-light); }

/* Grid helpers */
.two-col   { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.three-col { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }

/* Scroll animation */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity .65s ease, transform .65s ease; }
.fade-in.visible { opacity: 1; transform: none; }

/* ----------------------------
   HEADER / NAV
---------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-light);
  box-shadow: 0 2px 12px rgba(0,0,0,.04);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav__logo {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: -.5px;
}

.nav__logo img { height: 40px; width: auto; }

.nav__links {
  display: flex;
  gap: 32px;
}

.nav__links a {
  font-size: .875rem;
  font-weight: 500;
  color: var(--dark);
  transition: color var(--transition);
}
.nav__links a:hover,
.nav__links a.current-menu-item { color: var(--teal); }

.nav__cta { display: flex; gap: 12px; }

.nav__hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}
.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  transition: var(--transition);
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 200;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a { font-family: var(--font-head); font-size: 1.8rem; color: var(--dark); }
.mobile-nav a:hover { color: var(--teal); }
.mobile-nav__close {
  position: absolute;
  top: 24px;
  right: 24px;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--dark);
}

/* ----------------------------
   HERO
---------------------------- */
.hero {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #0D4F4E 0%, #1A8A88 50%, #2AACAA 100%);
}

.hero__bg-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .18;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 620px;
}

.hero__content .tag {
  background: rgba(255,255,255,.2);
  color: var(--white);
}

.hero__title {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 18px;
}

.hero__subtitle {
  font-size: 1rem;
  color: rgba(255,255,255,.85);
  margin-bottom: 32px;
  max-width: 480px;
}

.hero__badges { display: flex; gap: 14px; flex-wrap: wrap; }

.hero__badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius);
  padding: 10px 18px;
  cursor: pointer;
  transition: var(--transition);
  color: var(--white);
  font-size: .85rem;
  font-weight: 600;
  text-decoration: none;
}
.hero__badge:hover { background: rgba(255,255,255,.28); }
.hero__badge img { width: 38px; height: 38px; border-radius: 6px; object-fit: cover; }
.hero__badge-icon {
  width: 38px; height: 38px;
  border-radius: 6px;
  background: rgba(255,255,255,.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}

/* ----------------------------
   WHAT ARE EXOSOMES
---------------------------- */
.exosomes-intro { }
.exosomes-intro .two-col { gap: 80px; }

.exosomes-intro__image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(42,172,170,.18);
  aspect-ratio: 4/3;
  background: var(--teal-light);
}
.exosomes-intro__image img { width: 100%; height: 100%; object-fit: cover; }

.exo-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}

.exo-point { display: flex; gap: 14px; align-items: flex-start; }

.exo-point__icon {
  width: 44px; height: 44px; min-width: 44px;
  border-radius: 10px;
  background: var(--teal-light);
  display: flex; align-items: center; justify-content: center;
}
.exo-point__icon svg { width: 22px; height: 22px; stroke: var(--teal); fill: none; stroke-width: 2; }

.exo-point__label {
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--teal);
  display: block;
  margin-bottom: 2px;
}
.exo-point p { font-size: .875rem; color: var(--gray); }

/* ----------------------------
   SERVICES
---------------------------- */
.service-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--white);
  transition: transform var(--transition);
}
.service-card:hover { transform: translateY(-6px); }

.service-card__image {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.service-card__image img { width: 100%; height: 100%; object-fit: cover; }

.service-card__body { padding: 24px; }

.service-card__title {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.service-card__desc { font-size: .875rem; color: var(--gray); margin-bottom: 16px; }

/* ----------------------------
   PROCESS
---------------------------- */
.process { background: var(--off-white); }
.process .two-col { gap: 80px; }

.process__image {
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4/5;
  box-shadow: var(--shadow);
}
.process__image img { width: 100%; height: 100%; object-fit: cover; }

.accordion { margin-top: 32px; display: flex; flex-direction: column; gap: 12px; }

.accordion-item {
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
}

.accordion-item__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 600;
  font-size: .95rem;
  transition: background var(--transition);
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  color: var(--dark);
}
.accordion-item__header:hover { background: var(--teal-light); }

.accordion-item__icon {
  width: 28px; height: 28px; min-width: 28px;
  border-radius: 50%;
  background: var(--teal-light);
  display: flex; align-items: center; justify-content: center;
  transition: transform var(--transition), background var(--transition);
}
.accordion-item__icon svg { width: 14px; height: 14px; stroke: var(--teal); fill: none; stroke-width: 2.5; transition: stroke var(--transition); }

.accordion-item.is-open .accordion-item__header { background: var(--teal-light); }
.accordion-item.is-open .accordion-item__icon { background: var(--teal); transform: rotate(45deg); }
.accordion-item.is-open .accordion-item__icon svg { stroke: var(--white); }

.accordion-item__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .38s ease, padding .38s ease;
  padding: 0 22px;
  font-size: .875rem;
  color: var(--gray);
  line-height: 1.7;
}
.accordion-item.is-open .accordion-item__body { max-height: 300px; padding: 14px 22px 22px; }

/* ----------------------------
   WHY TELEHEALTH
---------------------------- */
.telehealth { background: var(--teal); }
.telehealth .section-title { color: var(--white); }
.telehealth .section-sub { color: rgba(255,255,255,.8); }

.tel-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.tel-card {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  transition: background var(--transition);
}
.tel-card:hover { background: rgba(255,255,255,.22); }

.tel-card__icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: rgba(255,255,255,.2);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
}
.tel-card__icon svg { width: 28px; height: 28px; stroke: var(--white); fill: none; stroke-width: 2; }

.tel-card__title {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.tel-card p { font-size: .83rem; color: rgba(255,255,255,.8); }

.tel-quote {
  margin: 48px auto 0;
  text-align: center;
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-style: italic;
  color: rgba(255,255,255,.9);
  max-width: 700px;
  line-height: 1.6;
}

/* ----------------------------
   UNLOCK POTENTIAL
---------------------------- */
.unlock { background: var(--off-white); }

.unlock__image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 1;
}
.unlock__image img { width: 100%; height: 100%; object-fit: cover; }

.therapy-list { display: flex; flex-direction: column; gap: 14px; margin-top: 28px; }

.therapy-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--white);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  padding: 14px 18px;
  transition: var(--transition);
  text-decoration: none;
  color: var(--dark);
}
.therapy-item:hover { border-color: var(--teal); box-shadow: var(--shadow); }

.therapy-item__image {
  width: 52px; height: 52px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--teal-light);
}
.therapy-item__image img { width: 100%; height: 100%; object-fit: cover; }

.therapy-item__label { font-weight: 600; font-size: .9rem; display: block; }
.therapy-item__sub { font-size: .78rem; color: var(--gray); }

.therapy-item__arrow { margin-left: auto; }
.therapy-item__arrow svg { width: 18px; height: 18px; stroke: var(--teal); fill: none; stroke-width: 2; }

/* ----------------------------
   CHECKLIST
---------------------------- */
.checklists { background: var(--dark); color: var(--white); }

.checklist-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 48px;
}

.checklist-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 36px;
}

.checklist-card h3 {
  font-family: var(--font-head);
  font-size: 1.3rem;
  color: var(--white);
  margin-bottom: 22px;
}

.checklist-card__list { display: flex; flex-direction: column; gap: 12px; }

.checklist-card__item {
  display: flex;
  gap: 12px;
  font-size: .875rem;
  color: rgba(255,255,255,.8);
  line-height: 1.5;
}

.checklist-card__item::before {
  content: '✓';
  color: var(--teal);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ----------------------------
   TESTIMONIALS
---------------------------- */
.testimonials { background: var(--white); }

.testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.testi-card {
  background: var(--off-white);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
}
.testi-card::before {
  content: '"';
  font-family: var(--font-head);
  font-size: 4.5rem;
  color: var(--teal);
  line-height: 1;
  position: absolute;
  top: 10px; left: 20px;
  opacity: .2;
}

.testi-card__text { font-size: .875rem; color: var(--gray); margin-top: 24px; line-height: 1.7; }

.testi-card__footer { display: flex; align-items: center; gap: 12px; margin-top: 20px; }

.testi-card__avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--teal-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--teal);
  font-weight: 700;
  font-size: .9rem;
  flex-shrink: 0;
}
.testi-card__avatar img { width: 100%; height: 100%; object-fit: cover; }

.testi-card__name  { font-weight: 600; font-size: .875rem; display: block; }
.testi-card__stars { font-size: .75rem; color: #F5A623; display: block; }

/* ----------------------------
   REFERRAL
---------------------------- */
.referral {
  background: linear-gradient(135deg, #1A8A88 0%, #2AACAA 100%);
  color: var(--white);
}

.referral__image {
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: 0 20px 40px rgba(0,0,0,.2);
}
.referral__image img { width: 100%; height: 100%; object-fit: cover; }

.referral__content .tag { background: rgba(255,255,255,.2); color: var(--white); }
.referral__content .section-title { color: var(--white); }

.referral__percentage {
  font-family: var(--font-head);
  font-size: 3.8rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  margin: 16px 0 6px;
}
.referral__percentage span { font-size: 1.1rem; font-weight: 400; opacity: .8; display: block; margin-top: 4px; }

.referral__note { font-size: .88rem; color: rgba(255,255,255,.8); margin-bottom: 28px; }

/* ----------------------------
   FAQ
---------------------------- */
.faq { background: var(--off-white); }

.faq__categories {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.faq__cat {
  padding: 7px 18px;
  border-radius: 20px;
  font-size: .8rem;
  font-weight: 600;
  border: 2px solid var(--gray-light);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
  color: var(--dark);
}
.faq__cat.is-active,
.faq__cat:hover { border-color: var(--teal); color: var(--teal); background: var(--teal-light); }

.faq .accordion { max-width: 820px; }

/* ----------------------------
   LEGAL
---------------------------- */
.legal { background: var(--dark); padding: 70px 0; }

.legal-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 70px;
  align-items: start;
}

.legal__badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.legal__badge-icon {
  width: 68px; height: 68px;
  border-radius: 16px;
  background: var(--teal);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.legal__badge-icon svg { width: 32px; height: 32px; stroke: var(--white); fill: none; stroke-width: 2; }

.legal__badge-name { font-family: var(--font-head); font-size: 1.2rem; color: var(--white); font-weight: 700; }
.legal__badge-sub  { font-size: .75rem; color: rgba(255,255,255,.45); margin-top: 4px; }

.legal__items { display: flex; flex-direction: column; gap: 28px; }

.legal__item h4 { font-family: var(--font-head); font-size: 1rem; color: var(--white); margin-bottom: 8px; }
.legal__item p  { font-size: .8rem; color: rgba(255,255,255,.5); line-height: 1.75; }

/* ----------------------------
   FOOTER
---------------------------- */
.site-footer {
  background: #111D1D;
  padding: 32px 0;
  border-top: 1px solid rgba(255,255,255,.06);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo { font-family: var(--font-head); font-size: 1.2rem; color: var(--teal); font-weight: 700; }
.footer-logo img { height: 32px; width: auto; }

.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a { font-size: .8rem; color: rgba(255,255,255,.45); transition: color var(--transition); }
.footer-links a:hover { color: var(--teal); }

.footer-copy { font-size: .75rem; color: rgba(255,255,255,.3); }

/* ----------------------------
   RESPONSIVE
---------------------------- */
@media (max-width: 1024px) {
  .exosomes-intro .two-col,
  .process .two-col { gap: 48px; }
}

@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; gap: 40px; }
  .nav__links, .nav__cta { display: none; }
  .nav__hamburger { display: flex; }
  .exosomes-intro .two-col > *:last-child { order: -1; }
  .referral .two-col > *:last-child { order: -1; }
}

@media (max-width: 760px) {
  .three-col, .tel-cards, .testi-grid { grid-template-columns: 1fr; }
  .exo-points { grid-template-columns: 1fr; }
  .checklist-grid { grid-template-columns: 1fr; }
  .legal-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
}

@media (max-width: 480px) {
  .hero { min-height: 480px; }
  .faq__categories { gap: 8px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}