/* ============================================================
   সু-স্বাস্থ্য চিকিৎসালয় — স্টাইলশিট (Light + Dark) v1.2
   ------------------------------------------------------------
   রঙ নীতি: টেক্সট/আইকনের রঙ সবসময় থিম-ভেদে বদলানো ভেরিয়েবল
   (--accent-text, --accent-icon, --link) দিয়ে হবে — কখনো
   সরাসরি গাঢ় নীল --blue দিয়ে নয় (ডার্ক মোডে পড়া যায় না)।
   ফন্ট নীতি: সব সাধারণ লেখা ও সংখ্যায় Noto Sans Bengali
   (পরিষ্কার ও পেশাদার বাংলা অঙ্কের জন্য পরীক্ষিত পছন্দ),
   বড় শিরোনামে Noto Serif Bengali (মার্জিত ভাব)।
   ============================================================ */
:root{
  color-scheme: light;
  --font-body:'Noto Sans Bengali','Hind Siliguri',system-ui,-apple-system,sans-serif;
  --font-serif:'Noto Serif Bengali','Noto Sans Bengali',serif;
  --font-display:'Noto Sans Bengali','Hind Siliguri',sans-serif;
  --blue:#243FA8; --blue-2:#3857C7; --blue-3:#6D8DF5;
  --bg:#F5F7FC; --surface:#FFFFFF; --surface-2:#EDF1FB;
  --text:#17213A; --muted:#4E5B7E; --border:#D9E1F5;
  --link:#3857C7;
  --accent-text:#243FA8;
  --accent-icon:#243FA8;
  --placeholder:#5D6890;
  --grad:linear-gradient(135deg,#243FA8 0%,#3857C7 55%,#4567DA 115%);
  --hero-grad:linear-gradient(135deg,#243FA8 0%,#3857C7 55%,#5274DE 115%);
  --shadow:0 10px 30px rgba(36,63,168,.12);
  --shadow-sm:0 4px 14px rgba(36,63,168,.08);
  --radius:18px; --header-h:70px;
  --ok:#137a45; --err:#b3261e;
  --wa-grad:linear-gradient(135deg,#25D366 0%,#1EBE5B 45%,#128C7E 120%);
}
[data-theme="dark"]{
  color-scheme: dark; /* ডেট/টাইম আইকন, ড্রপডাউন ও স্ক্রলবারও ডার্ক হবে */
  --bg:#0B1020; --surface:#151D32; --surface-2:#1B2745;
  --text:#F3F6FF; --muted:#A9B6D9; --border:#2A385E;
  --link:#9DB6FF;
  --accent-text:#9DB6FF; /* সব ডার্ক সারফেসে WCAG AA পাস (7.4:1+) */
  --accent-icon:#8FA8FF;
  --placeholder:#93A3CC;
  --hero-grad:linear-gradient(135deg,#D3DEFF 0%,#9DB6FF 45%,#6D8DF5 115%);
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --shadow-sm:0 4px 14px rgba(0,0,0,.35);
  --ok:#4cc38a; --err:#ff8a80;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);line-height:1.75;font-size:17px;transition:background .3s,color .3s;overflow-x:hidden;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;font-variant-numeric:lining-nums}
h1,h2{font-family:var(--font-serif);line-height:1.3}
img{max-width:100%;height:auto;display:block}
/* লিংকের রঙ একটি মাত্র নিয়মে (--link থিম অনুযায়ী বদলায়)।
   আগের [data-theme="dark"] a নিয়মটি বাটন/কল-নম্বরের সাদা রঙ
   বেশি স্পেসিফিসিটি দিয়ে ঢেকে দিত — সেটিই ছিল ডার্ক বাগের মূল কারণ। */
a{color:var(--link);text-decoration:none}
::selection{background:var(--blue);color:#fff}
:focus-visible{outline:3px solid var(--blue-3);outline-offset:2px;border-radius:6px}
.container{width:min(1140px,92%);margin-inline:auto}
.narrow{width:min(820px,92%)}
.muted{color:var(--muted)} .small{font-size:.92rem} .center{text-align:center}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--blue);color:#fff;padding:.6rem 1rem;z-index:200;border-radius:0 0 10px 0}
.skip-link:focus{left:0}

/* ---------- বাটন ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-display);font-weight:700;font-size:1rem;border-radius:12px;padding:.72rem 1.3rem;border:2px solid transparent;cursor:pointer;transition:transform .18s,box-shadow .18s,background .18s}
.btn svg{width:20px;height:20px;flex:none}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-outline{background:transparent;color:var(--accent-text);border-color:var(--blue-3)}
.btn-outline:hover{background:var(--surface-2);transform:translateY(-2px)}
.btn-lg{padding:.9rem 1.6rem;font-size:1.08rem}
.btn-sm{padding:.55rem 1rem;font-size:.98rem}
.btn-block{width:100%;justify-content:center}
/* গ্রেডিয়েন্ট ব্যাকগ্রাউন্ডের উপর সব লেখা সবসময় সাদা (দুই থিমেই) */
.btn-primary,.btn-primary:hover,.big-phone,.float-call,.float-whatsapp,.skip-link{color:#fff}
.call-card .btn-outline{color:#fff;border-color:rgba(255,255,255,.75)}
.call-card .btn-outline:hover{background:rgba(255,255,255,.14)}

/* ---------- হেডার / ন্যাভ ---------- */
.site-header{position:sticky;top:0;z-index:100;height:var(--header-h);background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-wrap{display:flex;align-items:center;gap:1rem;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:.65rem;color:inherit;flex:none}
.brand-logo{border-radius:12px}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-family:var(--font-display);font-weight:800;font-size:1.14rem;color:var(--accent-text)}
.brand-text small{font-size:.66rem;letter-spacing:.12em;color:var(--muted);font-weight:600}
.primary-nav{display:flex;gap:.3rem;margin-inline:auto}
.nav-link{padding:.5rem .8rem;border-radius:10px;color:var(--text);font-family:var(--font-display);font-weight:600;white-space:nowrap}
.nav-link:hover{background:var(--surface-2)}
.nav-link.active{background:var(--blue);color:#fff}
.nav-actions{display:flex;align-items:center;gap:.6rem;flex:none}
.theme-toggle{width:44px;height:44px;border-radius:50%;border:1.5px solid var(--border);background:var(--surface);cursor:pointer;font-size:1.05rem;display:grid;place-items:center}
.theme-toggle:hover{border-color:var(--blue-3)}
[data-theme="light"] .icon-sun{display:none}
[data-theme="dark"] .icon-moon{display:none}
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border:1.5px solid var(--border);background:var(--surface);border-radius:12px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:20px;height:2.4px;background:var(--text);border-radius:2px;transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- হিরো ---------- */
.hero{position:relative;padding:3.2rem 0 2.4rem;overflow:hidden;background:linear-gradient(180deg,var(--surface-2),var(--bg) 78%)}
.hero-bg .blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.45;pointer-events:none}
.blob-1{width:420px;height:420px;background:#6D8DF5;top:-140px;inset-inline-end:-100px}
.blob-2{width:300px;height:300px;background:#243FA8;bottom:-120px;inset-inline-start:-80px;opacity:.28}
.blob-3{width:180px;height:180px;background:#9DB6FF;top:42%;left:42%;opacity:.3}
[data-theme="dark"] .hero-bg .blob{opacity:.22} /* ডার্কে ঝলক কম — লেখার কনট্রাস্ট রক্ষা */
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:3rem;align-items:center;position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;color:var(--accent-text);font-family:var(--font-display);font-weight:700;background:var(--surface);border:1px solid var(--border);padding:.3rem .9rem;border-radius:999px;font-size:.97rem;box-shadow:var(--shadow-sm)}
.eyebrow .dot{width:9px;height:9px;border-radius:50%;background:#22a06b;box-shadow:0 0 0 4px rgba(34,160,107,.18)}
.hero h1{font-size:clamp(2.3rem,5.4vw,3.7rem);font-weight:900;background:var(--hero-grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin:.9rem 0 .2rem}
.hero-doctor{font-size:clamp(1.5rem,3vw,2.1rem);font-weight:800;font-family:var(--font-serif)}
.hero-desig{color:var(--accent-text);font-family:var(--font-display);font-weight:700;font-size:1.14rem}
.hero-desc{color:var(--muted);margin:1rem 0 1.5rem;max-width:34rem}
.hero-cta{display:flex;gap:.8rem;flex-wrap:wrap}
.hero-badges{list-style:none;display:flex;gap:1.4rem;flex-wrap:wrap;margin-top:1.4rem;font-weight:600}
.hero-badges li{display:flex;align-items:center;gap:.45rem}
.hero-badges svg{width:20px;height:20px;color:var(--accent-icon)}
.hero-slogan{margin-top:1.2rem;color:var(--muted);font-family:var(--font-serif);font-style:italic;border-inline-start:4px solid var(--blue-3);padding-inline-start:.9rem;max-width:32rem}
.portrait-frame{position:relative;border-radius:26px;padding:10px;background:var(--grad);box-shadow:var(--shadow);max-width:460px;margin-inline:auto}
.portrait-frame img{border-radius:19px;width:100%;aspect-ratio:5/6;object-fit:cover}
.portrait-placeholder{border-radius:19px;background:linear-gradient(160deg,#EDF2FF,#C9D7FF);aspect-ratio:5/6;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.4rem;color:#243FA8;text-align:center;padding:1.5rem}
[data-theme="dark"] .portrait-placeholder{background:linear-gradient(160deg,#1B2745,#243FA8);color:#DCE6FF}
.pp-initials{font-family:var(--font-serif);font-size:4.6rem;font-weight:900;width:140px;height:140px;border-radius:50%;display:grid;place-items:center;background:#fff;color:#243FA8;box-shadow:var(--shadow);margin-bottom:.6rem}
.pp-name{font-family:var(--font-serif);font-weight:800;font-size:1.3rem}
.pp-hint{font-size:.92rem;opacity:.85}
.float-card{position:absolute;bottom:22px;inset-inline-start:-18px;display:flex;gap:.7rem;align-items:center;background:var(--surface);color:var(--text);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:14px;padding:.65rem 1rem}
.float-card strong{display:block;line-height:1.3;font-family:var(--font-display);font-weight:700}
.float-card small{color:var(--muted)}
.fc-icon{width:42px;height:42px;border-radius:12px;background:var(--grad);color:#fff;display:grid;place-items:center;flex:none}
.fc-icon svg{width:22px;height:22px}
.status-strip{margin-top:2.6rem;display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.status-item{display:flex;align-items:center;gap:.8rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem 1.2rem;box-shadow:var(--shadow-sm)}
.status-item small{display:block;color:var(--muted)}
.status-dot{width:13px;height:13px;border-radius:50%;background:#9aa7c7;flex:none}
.status-item.open .status-dot{background:#1faa68;box-shadow:0 0 0 5px rgba(31,170,104,.18)}
.status-badge{margin-inline-start:auto;font-family:var(--font-display);font-weight:700;font-size:.9rem;padding:.3rem .8rem;border-radius:999px;background:var(--surface-2);color:var(--muted);white-space:nowrap}
.status-item.open .status-badge{background:rgba(31,170,104,.14);color:var(--ok)}

/* ---------- সেকশন সাধারণ ---------- */
.section{padding:4.2rem 0}
.section-alt{background:var(--surface-2)}
.section-head{text-align:center;max-width:44rem;margin:0 auto 2.4rem}
.section-head h2{font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:800;margin:.7rem 0 .5rem;color:var(--accent-text)}
.section-head p{color:var(--muted)}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:1.7rem}
.card-title{margin-bottom:1rem;color:var(--accent-text);font-family:var(--font-display);font-weight:700;font-size:1.18rem}

/* ---------- চিকিৎসক ---------- */
.doctor-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem;align-items:start}
.doctor-head{display:flex;gap:1rem;align-items:center;margin-bottom:1rem}
.avatar{width:66px;height:66px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-family:var(--font-serif);font-weight:900;font-size:1.5rem;flex:none}
.doctor-head h3{font-family:var(--font-serif);font-weight:800;font-size:1.45rem}
.doctor-head p{color:var(--accent-text);font-family:var(--font-display);font-weight:700}
.check-list{list-style:none;margin:1rem 0;display:grid;gap:.5rem}
.check-list li{display:flex;gap:.55rem;align-items:center;font-weight:500}
.check-list svg{width:20px;height:20px;color:var(--ok);flex:none}
.doctor-fig img{border-radius:14px;border:1px solid var(--border)}
.qual-list{list-style:none;display:grid;gap:1.05rem;margin-bottom:1rem}
.qual-list li{display:flex;gap:.9rem;align-items:flex-start}
.qual-dot{width:13px;height:13px;border-radius:50%;background:var(--grad);margin-top:.55rem;flex:none;box-shadow:0 0 0 5px rgba(109,141,245,.18)}

/* ---------- সেবা ---------- */
.services-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:1.1rem}
.service-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.4rem;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s,border-color .2s}
.service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--blue-3)}
.service-icon{width:54px;height:54px;border-radius:15px;background:var(--grad);color:#fff;display:grid;place-items:center;margin-bottom:.8rem}
.service-icon svg{width:28px;height:28px}
.service-card h3{font-family:var(--font-display);font-weight:700;font-size:1.1rem;margin-bottom:.4rem}
.service-link{font-family:var(--font-display);font-weight:700;font-size:.97rem;color:var(--link)}
.service-note{background:var(--grad);color:#fff;border:none}
.service-note h3,.service-note p,.service-note a{color:#fff}
.service-note .service-icon{background:rgba(255,255,255,.2)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem;margin-top:2.2rem}
.step{display:flex;gap:1rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.3rem}
.step>span{width:46px;height:46px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-family:var(--font-display);font-weight:800;font-size:1.25rem;flex:none}
.step strong{font-family:var(--font-display);font-weight:700}
.step p{color:var(--muted);font-size:.96rem}

/* ---------- চেম্বার ---------- */
.chambers-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem}
.chamber-card{border-top:6px solid var(--blue)}
.chamber-top{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.8rem}
.chamber-top h3{font-family:var(--font-serif);font-weight:800;font-size:1.35rem;color:var(--accent-text)}
.live-badge{font-family:var(--font-display);font-size:.84rem;font-weight:700;padding:.28rem .75rem;border-radius:999px;background:var(--surface-2);color:var(--muted);white-space:nowrap}
.live-badge.is-open{background:rgba(31,170,104,.15);color:var(--ok)}
.chamber-row{display:flex;gap:.6rem;margin:.55rem 0}
.chamber-row svg{width:21px;height:21px;color:var(--accent-icon);flex:none;margin-top:.3rem}
.chamber-actions{display:flex;gap:.7rem;flex-wrap:wrap;margin-top:1.1rem}

/* ---------- FAQ ---------- */
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:14px;margin-bottom:.8rem;overflow:hidden}
.faq-q{width:100%;text-align:start;font-family:var(--font-display);font-size:1.02rem;font-weight:700;background:none;border:none;color:var(--text);cursor:pointer;padding:1rem 1.3rem;display:flex;justify-content:space-between;gap:1rem;align-items:center}
.faq-q span{color:var(--accent-text);font-size:1.2rem;transition:transform .25s}
.faq-q[aria-expanded="true"] span{transform:rotate(45deg)}
.faq-a{padding:0 1.3rem 1.1rem;color:var(--muted)}

/* ---------- যোগাযোগ / ফর্ম ---------- */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:1.6rem;align-items:start}
.call-card{background:var(--grad);color:#fff;border:none;margin-bottom:1.2rem}
.call-card h3{margin-bottom:.2rem;color:#fff;font-family:var(--font-display);font-weight:700}
.big-phone{display:block;font-family:var(--font-display);font-size:clamp(1.7rem,4vw,2.3rem);font-weight:800;color:#fff;letter-spacing:.02em;font-variant-numeric:lining-nums tabular-nums}
.big-phone:hover{text-decoration:underline}
.call-card .btn-primary{background:#fff;color:#243FA8} /* সাদা বাটনে গাঢ় নীল লেখা — দুই থিমেই স্পষ্ট */
.mini-chamber{margin-bottom:1.2rem}
.mini-chamber h3{color:var(--accent-text);font-family:var(--font-display);font-weight:700}
.mini-chamber svg{width:18px;height:18px;vertical-align:-3px;color:var(--accent-icon)}
.form-card h3{font-family:var(--font-serif);font-weight:800;font-size:1.35rem;margin-bottom:.3rem}
.field{margin-bottom:1rem}
.field label{display:block;font-weight:600;margin-bottom:.35rem}
.field label span{color:var(--err)}
.field input,.field select,.field textarea{width:100%;font:inherit;padding:.72rem .95rem;border:1.5px solid var(--border);border-radius:11px;background:var(--bg);color:var(--text)}
.field input::placeholder,.field textarea::placeholder{color:var(--placeholder);opacity:1}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue-2);outline:none;box-shadow:0 0 0 4px rgba(109,141,245,.22)}
[data-theme="dark"] .field input:focus,[data-theme="dark"] .field select:focus,[data-theme="dark"] .field textarea:focus{border-color:var(--blue-3)}
.field [aria-invalid="true"]{border-color:var(--err)}
.field-error{color:var(--err);font-size:.92rem;margin-top:.3rem}
.field-row{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:1rem}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.alert{border-radius:13px;padding:1rem 1.2rem;margin:1rem 0}
.alert-success{background:rgba(31,170,104,.12);border:1px solid var(--ok)}
.alert-error{background:rgba(179,38,30,.08);border:1px solid var(--err)}
[data-theme="dark"] .alert-error{background:rgba(255,138,128,.10)}
.alert-info{background:var(--surface-2);border:1px solid var(--border);margin-top:2rem;font-size:.96rem}

/* ---------- ফুটার (দুই থিমেই গাঢ় নেভি, লেখা সবসময় হালকা) ---------- */
.site-footer{background:#0D1B4D;color:#DCE6FF;padding:3.2rem 0 1.6rem;margin-top:0}
[data-theme="dark"] .site-footer{background:#070C1C}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:2rem}
.brand-footer .brand-text strong{color:#fff}
.brand-footer .brand-text small{color:#9DB6FF}
.site-footer h3{color:#fff;margin-bottom:.7rem;font-size:1.08rem;font-family:var(--font-display);font-weight:700}
.footer-links{list-style:none}
.footer-links a{color:#DCE6FF;display:inline-block;padding:.22rem 0}
.footer-links a:hover{color:#fff;text-decoration:underline}
.footer-note{color:#B9C8F2;margin:.4rem 0}
.footer-note a{color:#fff;font-weight:600}
.disclaimer-box{margin-top:2rem;border:1px solid rgba(255,255,255,.22);border-radius:13px;padding:1rem 1.2rem;font-size:.92rem;color:#B9C8F2}
.footer-bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:1.4rem;padding-top:1.2rem;border-top:1px solid rgba(255,255,255,.15);font-size:.94rem}
.footer-bottom a{color:#9DB6FF}

/* ---------- ভাসমান বাটনসমূহ ---------- */
/* WhatsApp: সব ডিভাইসে, সবসময় ডান নিচের কোণে */
.float-whatsapp{position:fixed;inset-inline-end:20px;bottom:20px;z-index:95;display:inline-flex;align-items:center;gap:.55rem;background:var(--wa-grad);color:#fff;font-family:var(--font-display);font-weight:700;font-size:1.02rem;line-height:1;padding:.72rem 1.2rem .72rem .85rem;border-radius:999px;box-shadow:0 12px 28px rgba(18,140,126,.38);transition:transform .2s,box-shadow .2s;animation:waPulse 2.6s ease-in-out infinite}
.float-whatsapp svg{width:27px;height:27px;flex:none;filter:drop-shadow(0 1px 2px rgba(0,0,0,.18))}
.float-whatsapp:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(18,140,126,.48)}
@keyframes waPulse{0%,100%{box-shadow:0 12px 28px rgba(18,140,126,.38),0 0 0 0 rgba(37,211,102,.45)}50%{box-shadow:0 12px 28px rgba(18,140,126,.38),0 0 0 12px rgba(37,211,102,0)}}
/* কল বাটন: শুধু মোবাইল/ট্যাবে, বাম নিচের কোণে (WhatsApp-এর সঙ্গে ধাক্কা এড়াতে) */
.float-call{display:none;position:fixed;inset-inline-start:16px;bottom:20px;z-index:90;background:var(--grad);color:#fff;font-family:var(--font-display);font-weight:700;border-radius:999px;padding:.8rem 1.3rem;box-shadow:var(--shadow);align-items:center;gap:.5rem}
.float-call svg{width:21px;height:21px}

/* ---------- রিভিল অ্যানিমেশন ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .55s ease var(--d,0ms),transform .55s ease var(--d,0ms)}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- রেসপন্সিভ ---------- */
@media (max-width:960px){
  .primary-nav{position:absolute;top:var(--header-h);inset-inline:0;background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;padding:.8rem 4%;gap:.2rem;display:none;box-shadow:var(--shadow)}
  .primary-nav.open{display:flex}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .hero-grid,.doctor-grid,.chambers-grid,.contact-grid{grid-template-columns:1fr}
  .hero{padding-top:2rem}
  .portrait-frame{max-width:400px}
  .float-card{inset-inline-start:8px}
  .status-strip{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .field-row{grid-template-columns:1fr}
  .float-call{display:inline-flex}
  body{padding-bottom:86px} /* ভাসমান বাটন দুটির জন্য জায়গা */
}
@media (max-width:540px){
  body{font-size:16px}
  .footer-grid{grid-template-columns:1fr}
  .hero-cta{flex-direction:column} /* ছোট স্ক্রিনে বাটনের লেখা ভাঙা রোধ */
  .hero-cta .btn{width:100%;justify-content:center}
  .brand-text small{display:none}
  .card{padding:1.25rem}
  .float-whatsapp{inset-inline-end:14px;bottom:16px;padding:.66rem 1rem .66rem .75rem;font-size:.97rem}
  .float-whatsapp svg{width:24px;height:24px}
  .float-call{inset-inline-start:14px;bottom:16px}
}