/* Air Doctor — modern medical brand */
:root{
  --brand:#0284c7;      /* sky-600 */
  --brand-dark:#075985; /* sky-800 */
  --brand-soft:#e0f2fe; /* sky-100 */
  --accent:#10b981;     /* emerald-500 */
  --ink:#0f172a;
  --ink-2:#334155;
  --muted:#64748b;
  --line:#e2e8f0;
  --bg:#ffffff;
  --bg-2:#f8fafc;
  --grad:linear-gradient(135deg,#0284c7 0%,#0ea5e9 45%,#10b981 100%);
  --shadow-sm:0 1px 2px rgba(15,23,42,.06),0 1px 3px rgba(15,23,42,.08);
  --shadow:0 10px 25px -12px rgba(2,132,199,.25),0 4px 10px -4px rgba(15,23,42,.08);
  --shadow-lg:0 30px 60px -20px rgba(2,132,199,.35),0 10px 20px -10px rgba(15,23,42,.15);
  --radius:14px;
  --radius-lg:22px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3,h4{margin:0;line-height:1.15;letter-spacing:-.02em;color:var(--ink)}
h1{font-size:clamp(2.1rem,4.8vw,3.6rem);font-weight:800}
h2{font-size:clamp(1.7rem,3.2vw,2.4rem);font-weight:700}
h4{font-size:1.1rem;font-weight:600}
p{margin:0;color:var(--ink-2)}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 22px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:999px;font-weight:600;font-size:.95rem;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background .2s;border:1px solid transparent;white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px -8px rgba(2,132,199,.55)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 12px 24px -8px rgba(2,132,199,.7)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--bg-2);border-color:#cbd5e1}
.btn-lg{padding:14px 26px;font-size:1rem}
.btn-block{width:100%;margin-top:14px}

/* NAV */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s}
.nav.scrolled{border-color:var(--line);box-shadow:0 4px 20px -12px rgba(15,23,42,.15)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:18px}
.brand{display:flex;align-items:center;gap:9px;color:var(--brand);font-weight:800;font-size:1.2rem;letter-spacing:-.01em}
.brand span{color:var(--ink)}
.nav-links{display:flex;gap:26px}
.nav-links a{color:var(--ink-2);font-weight:500;font-size:.94rem;transition:color .15s}
.nav-links a:hover{color:var(--brand)}
.nav-cta{display:flex;gap:10px;align-items:center}
.nav-burger{display:none;background:none;border:0;flex-direction:column;gap:5px;padding:8px;cursor:pointer}
.nav-burger span{width:22px;height:2px;background:var(--ink);border-radius:2px;display:block}

/* HERO */
.hero{position:relative;padding:60px 0 100px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:
  radial-gradient(1000px 500px at 85% -10%,rgba(2,132,199,.16),transparent 60%),
  radial-gradient(800px 400px at 10% 20%,rgba(16,185,129,.12),transparent 60%),
  linear-gradient(180deg,#f0f9ff 0%,#ffffff 90%);
  z-index:-1}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:.85rem;font-weight:500;color:var(--ink-2);box-shadow:var(--shadow-sm);margin-bottom:22px}
.pulse{width:8px;height:8px;background:var(--accent);border-radius:50%;box-shadow:0 0 0 0 rgba(16,185,129,.5);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(16,185,129,.6)}70%{box-shadow:0 0 0 10px rgba(16,185,129,0)}100%{box-shadow:0 0 0 0 rgba(16,185,129,0)}}
.lead{font-size:1.15rem;color:var(--ink-2);margin:22px 0 30px;max-width:540px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-trust{display:flex;align-items:center;gap:10px;margin-top:26px;font-size:.9rem;color:var(--muted)}
.stars{color:#f59e0b;letter-spacing:2px}

/* HERO CARDS */
.hero-visual{position:relative;min-height:440px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow)}
.float-card{animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.card-main{position:relative;z-index:2;max-width:400px;margin:0 auto;box-shadow:var(--shadow-lg)}
.doctor-row{display:flex;gap:14px;align-items:flex-start;margin-bottom:18px}
.avatar{width:52px;height:52px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.doc-name{font-weight:600}
.verified{color:var(--accent);font-size:.85em}
.doc-meta{color:var(--muted);font-size:.88rem;margin-top:2px}
.doc-tags{margin-top:8px;display:flex;flex-wrap:wrap;gap:6px}
.doc-tags span{font-size:.75rem;padding:3px 9px;border-radius:6px;background:var(--brand-soft);color:var(--brand-dark);font-weight:500}
.slot-row{display:flex;gap:8px;margin-bottom:6px;flex-wrap:wrap}
.slot{flex:1;min-width:0;padding:10px 6px;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:.85rem;color:var(--ink-2);cursor:pointer;transition:all .15s;font-family:inherit}
.slot:hover{border-color:var(--brand)}
.slot.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.card-mini{position:absolute;display:flex;align-items:center;gap:12px;padding:14px 18px;animation-duration:7s}
.card-mini-1{top:12%;left:-20px;animation-delay:-2s}
.card-mini-2{bottom:12%;right:-10px;animation-delay:-4s}
.mini-ic{font-size:1.5rem}
.mini-title{font-weight:600;font-size:.9rem}
.mini-sub{font-size:.78rem;color:var(--muted)}

/* TRUST PILLARS */
.trustbar{padding:0 0 30px}
.trustbar-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:32px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}
.pillar{text-align:center;padding:0 20px;border-right:1px solid var(--line)}
.pillar:last-child{border-right:0}
.pillar-ic{width:44px;height:44px;margin:0 auto 10px;border-radius:12px;background:linear-gradient(135deg,var(--brand-soft),#ecfdf5);display:flex;align-items:center;justify-content:center;font-size:1.3rem}
.pillar-t{font-size:1.02rem;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.pillar-s{color:var(--muted);font-size:.85rem;margin-top:4px;line-height:1.45}
.check{color:var(--accent);font-weight:700;font-size:1.1rem}

/* Why Trust card icons */
.t-ic{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,var(--brand-soft),#ecfdf5);display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:18px}
.t-card h4{margin-bottom:8px}

/* SECTIONS */
.section{padding:90px 0}
.section-alt{background:var(--bg-2)}
.section-title{text-align:center;max-width:780px;margin:0 auto 14px}
.section-sub{text-align:center;color:var(--muted);max-width:640px;margin:0 auto 56px;font-size:1.05rem}
.grid{display:grid;gap:22px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}

/* PROBLEM cards */
.p-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .2s,box-shadow .2s,border-color .2s}
.p-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:transparent}
.p-tag{display:inline-block;padding:4px 10px;background:var(--brand-soft);color:var(--brand-dark);font-size:.72rem;font-weight:600;border-radius:6px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px}
.p-card h4{margin-bottom:8px}
.p-card p{font-size:.94rem;color:var(--muted)}

/* STEPS */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;position:relative}
.step-n{font-size:2rem;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:10px;line-height:1}
.step h4{margin-bottom:8px}
.step p{font-size:.92rem;color:var(--muted)}

/* FEATURES */
.f-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:transform .2s,box-shadow .2s,border-color .2s}
.f-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.f-ic{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,var(--brand-soft),#ecfdf5);display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:18px}
.f-card h4{margin-bottom:8px}
.f-card p{font-size:.94rem;color:var(--muted)}

/* SPECIALTIES */
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.spec{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;font-weight:600;display:flex;flex-direction:column;align-items:center;gap:10px;font-size:2rem;transition:all .2s;cursor:pointer}
.spec span{font-size:.95rem;color:var(--ink)}
.spec:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-sm)}

/* COUNTRIES */
.country-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.country{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 18px;font-weight:500;color:var(--ink-2);transition:all .15s}
.country:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.country-more{background:var(--grad);color:#fff;border:0;font-weight:600;text-align:center}

/* TESTIMONIALS */
.t-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;gap:16px;transition:transform .2s,box-shadow .2s}
.t-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.t-card p{color:var(--ink-2);font-size:.98rem;line-height:1.65}
.t-author{display:flex;align-items:center;gap:12px;margin-top:auto;color:var(--muted);font-size:.85rem}
.t-author strong{color:var(--ink);font-size:.92rem}
.avatar-sm{width:42px;height:42px;font-size:.85rem}

/* FAQ */
.container-narrow{max-width:820px}
.faq{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:box-shadow .2s,border-color .2s}
.faq-item.open{border-color:var(--brand);box-shadow:var(--shadow-sm)}
.faq-q{width:100%;background:none;border:0;padding:22px 24px;text-align:left;font-family:inherit;font-size:1.02rem;font-weight:600;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px}
.faq-i{font-size:1.5rem;color:var(--brand);font-weight:400;transition:transform .2s;flex-shrink:0}
.faq-item.open .faq-i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:400px}
.faq-a p{padding:0 24px 22px;color:var(--muted);font-size:.96rem}

/* CONTACT */
.contact-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:18px}
.contact-card{display:flex;align-items:center;gap:20px;padding:28px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:transform .2s,box-shadow .2s,border-color .2s;color:inherit}
.contact-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand)}
.contact-card-alt{background:linear-gradient(135deg,var(--brand-soft),#ecfdf5);border-color:transparent;cursor:default}
.contact-card-alt:hover{transform:none;box-shadow:none}
.contact-ic{width:56px;height:56px;border-radius:14px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.6rem;flex-shrink:0}
.contact-label{color:var(--muted);font-size:.82rem;font-weight:500;text-transform:uppercase;letter-spacing:.06em}
.contact-value{font-size:1.1rem;font-weight:600;color:var(--ink);margin-top:4px;word-break:break-all}
.contact-hint{color:var(--brand);font-size:.85rem;margin-top:6px;font-weight:500}
.contact-card-alt .contact-hint{color:var(--muted);font-weight:400}

/* Footer email */
.foot-email{display:inline-block;margin-top:16px;color:var(--accent)!important;font-weight:500;font-size:.9rem;word-break:break-all}
.foot-email:hover{color:#fff!important}

/* CTA */
.cta{padding:80px 0}
.cta-box{background:var(--grad);border-radius:var(--radius-lg);padding:70px 40px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-box::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 80% 20%,rgba(255,255,255,.15),transparent 60%)}
.cta-box h2{color:#fff;position:relative}
.cta-box p{color:rgba(255,255,255,.9);font-size:1.1rem;margin-top:14px;max-width:540px;margin-left:auto;margin-right:auto;position:relative}

/* FOOTER */
.footer{background:#0f172a;color:#cbd5e1;padding:70px 0 30px;font-size:.92rem}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid #1e293b}
.foot-brand p{color:#94a3b8;margin-top:14px;max-width:280px}
.footer h5{color:#fff;font-size:.9rem;font-weight:600;margin:0 0 16px;text-transform:uppercase;letter-spacing:.06em}
.footer a{display:block;color:#94a3b8;margin-bottom:10px;transition:color .15s}
.footer a:hover{color:var(--accent)}
.foot-bottom{display:flex;justify-content:space-between;padding-top:26px;color:#64748b;font-size:.85rem;flex-wrap:wrap;gap:10px}

/* RESPONSIVE */
@media (max-width:960px){
  .hero-inner{grid-template-columns:1fr;gap:60px}
  .hero-visual{min-height:auto;order:-1}
  .card-mini-1{left:0}.card-mini-2{right:0}
  .grid-4,.grid-3,.steps,.spec-grid{grid-template-columns:repeat(2,1fr)}
  .country-grid{grid-template-columns:repeat(3,1fr)}
  .trustbar-inner{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .nav-links,.nav-cta .btn-ghost{display:none}
  .nav-burger{display:flex}
  body.menu-open .nav-links{display:flex;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;gap:18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .section{padding:60px 0}
  .grid-4,.grid-3,.grid-2,.steps{grid-template-columns:1fr}
  .spec-grid,.country-grid,.contact-grid{grid-template-columns:repeat(2,1fr)}
  .trustbar-inner{grid-template-columns:repeat(2,1fr);padding:22px;gap:20px}
  .pillar{border-right:0;padding:16px 10px}
  .pillar:nth-child(odd){border-right:1px solid var(--line)}
  .contact-grid{grid-template-columns:1fr}
  .contact-card{padding:22px}
  .cta-box{padding:50px 24px}
  .foot-grid{grid-template-columns:1fr;gap:30px}
  .foot-bottom{flex-direction:column;text-align:center}
  .hero{padding:40px 0 60px}
}