/*!
 * Healthy Breathing Premium — design system
 * Apple-inspired glassmorphism, blue/teal/white palette, system font
 * stack (zero web-font requests), WCAG AA contrast, premium whitespace.
 */

/* ---------- Design tokens ---------- */
:root{
  --c-primary:#0B5D6B;
  --c-primary-light:#12879B;
  --c-blue:#1F6FEB;
  --c-blue-soft:#E8F1FF;
  --c-white:#FFFFFF;
  --c-mist:#F4FAFA;
  --c-ink:#0E2A30;
  --c-ink-soft:#4E6B70;
  --glass-bg:rgba(255,255,255,0.62);
  --glass-border:rgba(255,255,255,0.35);
  --shadow-soft:0 10px 40px rgba(11,93,107,0.10);
  --shadow-lift:0 20px 60px rgba(11,93,107,0.18);
  --radius-lg:28px;
  --radius-md:20px;
  --radius-sm:12px;
  --font-display:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-text:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --hero-bg: none;
  --container:1200px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-text);
  color:var(--c-ink);
  background:var(--c-white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.15;margin:0 0 .5em;font-weight:700;letter-spacing:-0.02em;color:var(--c-ink)}
h1{font-size:clamp(2.2rem,4.5vw,3.5rem)}
h2{font-size:clamp(1.7rem,3vw,2.4rem)}
h3{font-size:1.25rem}
p{margin:0 0 1em}
.screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}
.skip-link{position:fixed;top:-60px;left:8px;z-index:9999;background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:8px;transition:top .2s}
.skip-link:focus{top:8px}
:focus-visible{outline:3px solid var(--c-blue);outline-offset:2px}

/* ---------- Layout ---------- */
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.container-narrow{max-width:820px}
.section-pad{padding:88px 0}
.section-tinted{background:linear-gradient(180deg,var(--c-mist) 0%,var(--c-blue-soft) 100%)}
.section-heading{max-width:680px;margin:0 auto 48px;text-align:center}
.section-heading .lead{color:var(--c-ink-soft)}
.section-footer-link{text-align:center;margin-top:40px}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;font-weight:700;color:var(--c-primary-light)}
.lead{font-size:1.15rem;color:var(--c-ink-soft)}
.content-with-sidebar{display:grid;grid-template-columns:1fr 320px;gap:56px}
@media (max-width:900px){.content-with-sidebar{grid-template-columns:1fr}}

/* ---------- Glassmorphism ---------- */
.glass-card{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-md);
  backdrop-filter:blur(16px) saturate(160%);
  -webkit-backdrop-filter:blur(16px) saturate(160%);
  box-shadow:var(--shadow-soft);
  padding:32px;
  transition:transform .35s ease, box-shadow .35s ease;
}
.glass-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:999px;font-weight:600;font-size:1rem;
  transition:transform .25s ease, box-shadow .25s ease, background .25s ease;
  border:1px solid transparent;cursor:pointer;
}
.btn .btn-icon,.btn svg{width:18px;height:18px}
.btn-primary{background:linear-gradient(135deg,var(--c-primary),var(--c-blue));color:#fff;box-shadow:0 12px 28px rgba(31,111,235,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(31,111,235,.36)}
.btn-ghost{background:rgba(255,255,255,.5);border-color:rgba(11,93,107,.25);color:var(--c-ink)}
.btn-ghost:hover{background:#fff}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary);color:#fff}
.btn-small{padding:10px 18px;font-size:.9rem}
.btn-large{padding:18px 34px;font-size:1.1rem}

/* ---------- Header ---------- */
.scroll-progress{position:fixed;top:0;left:0;width:100%;height:3px;z-index:1000;background:transparent}
.scroll-progress-bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--c-primary),var(--c-blue));transition:width .1s linear}
.site-header{
  position:sticky;top:0;z-index:900;
  background:rgba(255,255,255,.7);
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(11,93,107,.08);
  transition:box-shadow .3s ease;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 24px}
.site-logo-fallback{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:700;font-size:1.2rem;color:var(--c-ink)}
.logo-mark{width:32px;height:32px;color:var(--c-primary)}
.custom-logo{max-height:56px;width:auto}
.primary-nav{display:flex;align-items:center;gap:32px;flex:1;justify-content:flex-end}
.nav-menu{display:flex;gap:28px;align-items:center}
.nav-menu a{font-weight:600;color:var(--c-ink);position:relative;padding:6px 0}
.nav-menu a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--c-blue);transition:width .25s ease}
.nav-menu a:hover::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:18px}
.nav-phone{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--c-primary)}
.nav-phone svg{width:18px;height:18px}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;color:var(--c-ink)}
.nav-toggle svg{width:26px;height:26px}
.nav-toggle .icon-close{display:none}

@media (max-width:980px){
  .nav-toggle{display:block;order:3}
  .primary-nav{
    position:fixed;inset:0 0 0 auto;top:73px;height:calc(100vh - 73px);width:min(340px,86vw);
    background:rgba(255,255,255,.98);backdrop-filter:blur(20px);
    flex-direction:column;align-items:flex-start;justify-content:flex-start;
    padding:32px 28px;transform:translateX(100%);transition:transform .35s ease;
    box-shadow:-10px 0 40px rgba(11,93,107,.15);
  }
  .nav-menu{flex-direction:column;align-items:flex-start;gap:20px;width:100%}
  .nav-cta{flex-direction:column;align-items:flex-start;width:100%;margin-top:28px;gap:14px}
  .primary-nav.is-open{transform:translateX(0)}
  .nav-toggle[aria-expanded="true"] .icon-open{display:none}
  .nav-toggle[aria-expanded="true"] .icon-close{display:block}
  .header-inner{flex-wrap:wrap}
}

/* ---------- Breadcrumbs ---------- */
.hb-breadcrumbs{padding:14px 0;font-size:.85rem;color:var(--c-ink-soft)}
.hb-breadcrumbs ol{display:flex;flex-wrap:wrap;gap:6px}
.hb-breadcrumbs li:not(:last-child)::after{content:"/";margin-left:6px;color:#b9cdd0}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:96px 0 60px;
  background:linear-gradient(135deg,var(--c-mist) 0%,var(--c-blue-soft) 100%), var(--hero-bg);
  background-size:cover;background-position:center;
}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;position:relative;z-index:2}
.hero-copy .eyebrow{margin-bottom:14px;display:block}
.hero-copy h1{margin-bottom:20px}
.hero-actions{display:flex;gap:16px;margin-top:28px;flex-wrap:wrap}
.hero-visual{position:relative;display:flex;align-items:center;justify-content:center;min-height:420px}
.hero-doctor-image{border-radius:var(--radius-lg);box-shadow:var(--shadow-lift);max-width:340px;position:relative;z-index:2}
.hero-scroll-cue{display:flex;justify-content:center;margin-top:40px}
.hero-scroll-cue span{width:26px;height:42px;border:2px solid var(--c-primary-light);border-radius:20px;position:relative}
.hero-scroll-cue span::before{content:"";position:absolute;top:6px;left:50%;width:4px;height:8px;background:var(--c-primary-light);border-radius:2px;transform:translateX(-50%);animation:hb-scroll-cue 1.6s ease infinite}
@keyframes hb-scroll-cue{0%{opacity:1;top:6px}70%{opacity:0;top:20px}100%{opacity:0;top:6px}}

.hero-particles{position:absolute;inset:0;z-index:1;pointer-events:none}
.hero-particles span{position:absolute;border-radius:50%;background:radial-gradient(circle,rgba(31,111,235,.35),transparent 70%);animation:hb-float 12s ease-in-out infinite}
.hero-particles span:nth-child(1){width:60px;height:60px;top:12%;left:6%;animation-duration:14s}
.hero-particles span:nth-child(2){width:30px;height:30px;top:70%;left:14%;animation-duration:10s;animation-delay:1s}
.hero-particles span:nth-child(3){width:90px;height:90px;top:20%;left:85%;animation-duration:16s;animation-delay:2s}
.hero-particles span:nth-child(4){width:40px;height:40px;top:60%;left:90%;animation-duration:11s;animation-delay:.5s}
.hero-particles span:nth-child(5){width:22px;height:22px;top:40%;left:45%;animation-duration:9s;animation-delay:1.5s}
.hero-particles span:nth-child(6){width:50px;height:50px;top:85%;left:55%;animation-duration:13s;animation-delay:2.5s}
@keyframes hb-float{0%,100%{transform:translateY(0) translateX(0)}50%{transform:translateY(-30px) translateX(14px)}}

.floating-card{position:absolute;z-index:3;animation:hb-bob 6s ease-in-out infinite}
.floating-card-badge{
  display:flex;align-items:center;gap:10px;bottom:6%;left:-6%;
  background:var(--glass-bg);backdrop-filter:blur(14px);border:1px solid var(--glass-border);
  padding:14px 18px;border-radius:var(--radius-md);box-shadow:var(--shadow-soft);font-weight:600;font-size:.85rem;
}
.floating-card-badge svg{width:22px;height:22px;color:var(--c-primary)}
.lung-animation{top:-6%;right:-10%;width:170px;opacity:.9}
@keyframes hb-bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}
.floating-image{animation:hb-bob 7s ease-in-out infinite}

.breathing-lungs{width:100%;height:auto;color:var(--c-primary-light)}
.breathing-lungs .lung{fill:rgba(18,135,155,.16);stroke:var(--c-primary-light);stroke-width:3;transform-origin:center;animation:hb-breathe 4.2s ease-in-out infinite}
.breathing-lungs .lung-right{animation-delay:.15s}
.breathing-lungs .trachea{stroke:var(--c-primary-light);stroke-width:3}
@keyframes hb-breathe{0%,100%{transform:scale(1)}50%{transform:scale(1.08)}}

@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero-actions{justify-content:center}
  .hero-visual{margin-top:20px}
  .floating-card-badge{left:50%;transform:translateX(-50%);bottom:-10px}
}

/* ---------- Stats ---------- */
.stats-band{padding:56px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{text-align:center;padding:28px 16px}
.stat-number{display:block;font-family:var(--font-display);font-size:2.4rem;font-weight:800;color:var(--c-primary);letter-spacing:-0.02em}
.stat-label{display:block;margin-top:6px;color:var(--c-ink-soft);font-size:.95rem}
@media (max-width:780px){.stats-grid{grid-template-columns:repeat(2,1fr)}}

/* ---------- Cards / grids ---------- */
.card-grid{display:grid;gap:28px}
.card-grid-1{grid-template-columns:1fr}
.card-grid-2{grid-template-columns:repeat(2,1fr)}
.card-grid-3{grid-template-columns:repeat(3,1fr)}
@media (max-width:980px){.card-grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.card-grid-3,.card-grid-2{grid-template-columns:1fr}}
.card{display:flex;flex-direction:column;gap:10px}
.card-icon{width:52px;height:52px;border-radius:16px;background:var(--c-blue-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;margin-bottom:8px}
.card-icon svg{width:28px;height:28px}
.card-title a{color:var(--c-ink)}
.card-summary{color:var(--c-ink-soft);flex:1}
.card-link{font-weight:700;display:inline-flex;align-items:center;gap:6px;margin-top:6px}
.card-link svg,.read-more svg{width:16px;height:16px}
.clinic-card svg{width:30px;height:30px;color:var(--c-primary);margin-bottom:8px}
.team-card{text-align:center}
.team-card img{border-radius:var(--radius-md);margin-bottom:14px}
.team-role{font-weight:700;color:var(--c-primary)}
.team-quals{color:var(--c-ink-soft);font-size:.9rem}

/* ---------- Testimonials ---------- */
.testimonial{position:relative}
.testimonial-quote-mark{width:34px;height:34px;color:var(--c-blue);opacity:.5}
.hb-stars{display:flex;gap:2px;margin:6px 0}
.hb-stars svg{width:16px;height:16px}
.hb-stars .is-filled{color:#F2A93B;fill:#F2A93B}
.hb-stars .is-empty{color:#d8e2e3}
.testimonial-body{color:var(--c-ink-soft);font-style:italic}
.testimonial-author{display:flex;align-items:center;gap:12px;margin-top:14px}
.hb-avatar{width:42px;height:42px;border-radius:50%;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.testimonial-author span{display:block;color:var(--c-ink-soft);font-size:.85rem}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:16px}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:none;border:none;text-align:left;font-family:var(--font-display);font-weight:700;font-size:1.05rem;color:var(--c-ink);cursor:pointer;padding:0}
.faq-chevron{width:20px;height:20px;flex-shrink:0;transition:transform .3s ease}
.faq-item.is-open .faq-chevron{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.is-open .faq-answer{max-height:600px}
.faq-answer-inner{padding-top:14px;color:var(--c-ink-soft)}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-blue) 100%);color:#fff;padding:72px 0;text-align:center}
.cta-band h2{color:#fff;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.85);margin-bottom:24px}
.cta-band .btn-primary{background:#fff;color:var(--c-primary);box-shadow:0 12px 28px rgba(0,0,0,.18)}

/* ---------- Page hero (interior pages) ---------- */
.page-hero{padding:64px 0 40px;background:linear-gradient(180deg,var(--c-mist),transparent);text-align:left}
.page-hero .lead{max-width:640px}

/* ---------- Content article ---------- */
.content-article{max-width:820px}
.content-article h2{margin-top:1.6em}
.content-article ul.check-list{display:flex;flex-direction:column;gap:10px;margin:1.2em 0}
.check-list li{display:flex;align-items:flex-start;gap:10px}
.check-list svg{width:20px;height:20px;color:var(--c-primary);flex-shrink:0;margin-top:2px}
.disclaimer{font-size:.85rem;color:var(--c-ink-soft);border-top:1px solid #e3ecec;padding-top:18px;margin-top:32px}

/* ---------- Locations / map ---------- */
.location-details-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:32px 0}
@media (max-width:780px){.location-details-grid{grid-template-columns:1fr}}
.map-embed{border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-soft)}
.map-embed iframe{width:100%;height:360px;border:0;display:block}

/* ---------- Publications ---------- */
.publication-list{display:flex;flex-direction:column;gap:18px}
.publication-meta{color:var(--c-ink-soft);font-size:.9rem}

/* ---------- Blog ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
@media (max-width:980px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.post-grid{grid-template-columns:1fr}}
.post-card{padding:0;overflow:hidden}
.post-card-thumb{display:block;aspect-ratio:4/3;overflow:hidden;border-radius:var(--radius-md) var(--radius-md) 0 0}
.post-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-card-thumb img{transform:scale(1.05)}
.post-card-body{padding:24px}
.entry-meta{color:var(--c-ink-soft);font-size:.85rem}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-ink);color:#dceff0;padding:72px 0 28px;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer-widget-title{color:#fff;font-size:1rem;margin-bottom:14px}
.footer-col a{color:#b7d6d9}
.footer-col a:hover{color:#fff}
.social-links{display:flex;gap:14px;margin-top:16px;flex-wrap:wrap}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding-top:24px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}
.footer-bottom .disclaimer{color:#93b6b9;border:none;padding:0;max-width:640px}
.footer-copy{color:#dceff0}

/* ---------- Animations: reveal/stagger progressive enhancement ---------- */
html.js .reveal-item{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
html.js .reveal-item.is-visible{opacity:1;transform:translateY(0)}
html.js .image-reveal{opacity:0;transform:scale(.94);transition:opacity .7s ease,transform .7s ease}
html.js .image-reveal.is-visible{opacity:1;transform:scale(1)}
html.js .stagger .reveal-item:nth-child(1){transition-delay:0ms}
html.js .stagger .reveal-item:nth-child(2){transition-delay:80ms}
html.js .stagger .reveal-item:nth-child(3){transition-delay:160ms}
html.js .stagger .reveal-item:nth-child(4){transition-delay:240ms}
html.js .stagger .reveal-item:nth-child(5){transition-delay:320ms}
html.js .stagger .reveal-item:nth-child(6){transition-delay:400ms}
@media (prefers-reduced-motion:reduce){
  html.js .reveal-item,html.js .image-reveal{opacity:1;transform:none;transition:none}
  .floating-card,.floating-image,.hero-particles span,.breathing-lungs .lung,.hero-scroll-cue span::before{animation:none}
}

/* ---------- Misc ---------- */
.error-404{text-align:center;max-width:640px;margin:0 auto}
.error-links{display:flex;gap:18px;justify-content:center;margin:24px 0;flex-wrap:wrap}
.comments-area{margin-top:48px}
.search-form{display:flex;gap:10px;max-width:480px}
.search-field{flex:1;padding:12px 16px;border-radius:999px;border:1px solid #d7e4e4}