/* =====================================================================
   Dr Phan Quang — Gian hàng sức khoẻ
   Thiết kế mobile-first. Khán giả chính là người 40+ nên:
   chữ lớn, tương phản cao, nút cao tối thiểu 48px, ít thao tác.
   ===================================================================== */

:root{
  --green:#0E7C5A;
  --green-d:#095C42;
  --green-l:#E7F5EF;
  --orange:#EE4D2D;      /* màu Shopee — người mua nhận ra ngay */
  --orange-d:#D73211;
  --ink:#15241F;
  --ink-2:#4A5C55;
  --ink-3:#7C8C86;
  --line:#E3EAE7;
  --bg:#F6F9F8;
  --card:#FFFFFF;
  --red:#D63A2E;
  --star:#F5A524;
  --r:14px;
  --shadow:0 2px 10px rgba(16,40,32,.07);
  --dock-h:72px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.55;
  color:var(--ink);
  background:var(--bg);
  padding-bottom:calc(var(--dock-h) + env(safe-area-inset-bottom));
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,select,input{font:inherit;color:inherit}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
:focus-visible{outline:3px solid var(--green);outline-offset:2px;border-radius:6px}

/* ---------- Nút ---------- */
.btn{
  display:flex;align-items:center;justify-content:center;gap:6px;
  min-height:48px;padding:0 16px;border:0;border-radius:12px;
  font-size:16px;font-weight:700;cursor:pointer;text-align:center;
  -webkit-tap-highlight-color:transparent;
}
.btn--shopee{background:var(--orange);color:#fff;box-shadow:0 2px 0 var(--orange-d)}
.btn--shopee:active{transform:translateY(1px);box-shadow:none}
.btn--ghost{background:#fff;color:var(--green);border:1.5px solid var(--green)}

/* ---------- Đầu trang: thanh trên + hero dùng chung một nền ---------- */
.head{
  position:relative;overflow:hidden;
  padding:env(safe-area-inset-top) 0 50px;
  border-radius:0 0 30px 30px;
  background:
    radial-gradient(120% 90% at 88% -20%, rgba(255,255,255,.16), transparent 58%),
    radial-gradient(95% 75% at -15% 5%, rgba(149,226,195,.22), transparent 60%),
    linear-gradient(158deg,#14916B 0%,#0C7152 55%,#085840 100%);
}
/* vệt sáng mềm phía dưới, tránh mảng xanh bị phẳng */
.head::after{
  content:"";position:absolute;left:50%;bottom:-130px;transform:translateX(-50%);
  width:440px;height:230px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(255,255,255,.10),transparent 70%);
}

.topbar{position:relative;z-index:1}
.topbar__in{
  max-width:720px;margin:0 auto;padding:12px 16px 4px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand__logo{
  width:44px;height:44px;flex:0 0 44px;border-radius:50%;
  object-fit:cover;background:#fff;
  box-shadow:0 0 0 2px rgba(255,255,255,.55), 0 2px 8px rgba(0,0,0,.18);
}
.brand__txt{display:flex;flex-direction:column;min-width:0}
.brand__txt strong{font-size:16px;color:#fff;line-height:1.2;letter-spacing:-.2px;white-space:nowrap}
.brand__txt span{font-size:12px;color:rgba(255,255,255,.72);line-height:1.35}
.topbar__yt{
  display:flex;align-items:center;gap:6px;flex:0 0 auto;
  height:38px;padding:0 13px;border-radius:19px;white-space:nowrap;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
  color:#fff;font-size:13px;font-weight:700;
}

/* ---------- Hero ---------- */
.hero{max-width:720px;margin:0 auto;padding:14px 16px 0;position:relative;z-index:1}
.hero__kicker{
  display:inline-flex;align-items:center;margin:0 0 10px;
  font-size:11px;font-weight:700;letter-spacing:.7px;text-transform:uppercase;
  color:#A9E8CE;background:rgba(255,255,255,.1);
  border:1px solid rgba(169,232,206,.3);
  padding:5px 11px;border-radius:20px;
}
.hero__h1{
  margin:0 0 10px;font-size:28px;line-height:1.2;font-weight:800;
  color:#fff;letter-spacing:-.7px;
}
.hero__h1 span{color:#9FE6C8}
.hero__p{
  margin:0;max-width:32ch;
  font-size:14.5px;line-height:1.55;color:rgba(255,255,255,.78);
}

/* ---------- Thẻ uy tín, nổi lên giữa nền xanh và nền trang ---------- */
.trust{
  position:relative;z-index:3;
  width:calc(100% - 28px);max-width:720px;margin:-32px auto 0;
  display:grid;grid-template-columns:repeat(3,1fr);
  background:var(--card);border-radius:16px;padding:14px 6px;
  box-shadow:0 8px 24px rgba(9,60,43,.13);
}
.trust__i{position:relative;text-align:center;display:flex;flex-direction:column;gap:1px}
.trust__i + .trust__i::before{
  content:"";position:absolute;left:0;top:14%;height:72%;width:1px;background:var(--line);
}
.trust__i b{font-size:18px;color:var(--green);line-height:1.15;letter-spacing:-.3px}
.trust__i span{font-size:11px;color:var(--ink-3);line-height:1.3}

/* ---------- Tư vấn nhanh ---------- */
.needs{max-width:720px;margin:22px auto 0;padding:0 14px}
.needs__t{margin:0 0 11px;font-size:17px;font-weight:800;letter-spacing:-.3px}
.needs__list{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.need{
  display:flex;align-items:center;gap:11px;
  min-height:60px;padding:10px 12px;border-radius:15px;
  background:var(--card);border:1px solid var(--line);
  box-shadow:0 1px 3px rgba(16,40,32,.05);
  text-align:left;cursor:pointer;
  transition:transform .14s ease, box-shadow .14s ease;
}
/* nền chuyển sắc rất nhạt theo màu icon; trình duyệt cũ bỏ qua, nền vẫn trắng */
.need{background-image:linear-gradient(140deg,#fff 48%,color-mix(in srgb,var(--g1) 17%,#fff) 100%)}
.need:hover{transform:translateY(-1px);box-shadow:0 6px 16px -6px rgba(16,40,32,.22)}
.need__i{
  flex:0 0 38px;width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;color:#fff;
  background-image:linear-gradient(140deg,var(--g1),var(--g2));
  box-shadow:0 4px 10px -3px rgba(16,40,32,.3);
}
.need__i svg{
  width:20px;height:20px;fill:none;stroke:currentColor;
  stroke-width:2;stroke-linecap:round;stroke-linejoin:round;
}
/* text-wrap:balance chia đều chữ trên 2 dòng, tránh ngắt kiểu "mỡ / máu" */
.need__t{
  font-size:13.5px;font-weight:700;line-height:1.26;color:var(--ink);
  text-wrap:balance;
}
.need:active{transform:translateY(0)}
.need.is-on{
  border-color:var(--green);
  box-shadow:inset 0 0 0 1px var(--green), 0 4px 14px -6px rgba(14,124,90,.45);
}
.need.is-on .need__t{color:var(--green-d)}

/* ---------- Thanh dính: tìm kiếm + nhóm ---------- */
.sticky{
  position:sticky;top:0;z-index:30;
  background:var(--bg);
  padding:16px 0 4px;
  box-shadow:0 10px 14px -12px rgba(16,40,32,.22);
}
.search{
  max-width:720px;margin:0 auto 11px;padding:0 14px;
  display:flex;align-items:center;position:relative;
}
.search svg{position:absolute;left:28px;color:var(--ink-3);pointer-events:none}
.search input{
  width:100%;min-height:48px;
  padding:0 44px;border:1px solid var(--line);border-radius:14px;
  background:var(--card);font-size:15.5px;
  box-shadow:0 1px 3px rgba(16,40,32,.05);
}
.search input::placeholder{color:var(--ink-3)}
.search input:focus{border-color:var(--green);outline:none;box-shadow:0 0 0 3px rgba(14,124,90,.12)}
.search__x{
  position:absolute;right:24px;width:30px;height:30px;border:0;border-radius:50%;
  background:var(--line);font-size:20px;line-height:1;cursor:pointer;color:var(--ink-2);
}

/* Thanh nhóm: mờ dần hai mép để thấy rõ là cuộn ngang được */
.chips{
  display:flex;gap:8px;overflow-x:auto;
  padding:2px 14px 10px;
  scrollbar-width:none;-webkit-overflow-scrolling:touch;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 24px),transparent 100%);
          mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 24px),transparent 100%);
}
.chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:flex;align-items:center;gap:7px;
  height:40px;padding:0 13px;border-radius:20px;
  background:var(--card);border:1px solid var(--line);
  font-size:13.5px;font-weight:700;white-space:nowrap;cursor:pointer;
  color:var(--ink-2);box-shadow:0 1px 2px rgba(16,40,32,.04);
}
.chip__i{font-size:14px;line-height:1}
.chip__c{
  font-size:11px;font-weight:700;color:var(--ink-3);
  background:var(--bg);border-radius:9px;padding:2px 6px;line-height:1.25;
}
.chip.is-on{
  background:var(--green);border-color:var(--green);color:#fff;
  box-shadow:0 3px 10px rgba(12,113,82,.28);
}
.chip.is-on .chip__c{background:rgba(255,255,255,.22);color:#fff}

/* ---------- Thanh đếm + sắp xếp ---------- */
.wrap{max-width:720px;margin:0 auto;padding:0 14px}
.bar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:6px 0 10px}
.bar__count{margin:0;font-size:13.5px;color:var(--ink-3);font-weight:600}
.bar__sort select{
  min-height:40px;padding:0 10px;border:1.5px solid var(--line);border-radius:10px;
  background:var(--card);font-size:14px;font-weight:600;
}

/* ---------- Lưới sản phẩm (2 cột trên điện thoại) ---------- */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}

.card{
  background:var(--card);border-radius:var(--r);overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column;position:relative;
}
.card__tap{
  border:0;background:none;padding:0;text-align:left;cursor:pointer;
  display:flex;flex-direction:column;flex:1;
}
.card__imgbox{
  position:relative;aspect-ratio:1/1;background:var(--green-l);
  display:grid;place-items:center;overflow:hidden;
}
.card__imgbox img{width:100%;height:100%;object-fit:cover}
.card__ph{font-size:46px;opacity:.55}
.card__badges{position:absolute;top:7px;left:7px;display:flex;flex-direction:column;gap:4px;align-items:flex-start}
.tag{
  font-size:11px;font-weight:800;line-height:1;padding:5px 7px;border-radius:6px;color:#fff;
}
.tag--hot{background:var(--orange)}
.tag--off{background:var(--red)}

.card__body{padding:9px 10px 10px;display:flex;flex-direction:column;flex:1;gap:5px}
.card__cat{font-size:11px;font-weight:700;color:var(--green);text-transform:uppercase;letter-spacing:.3px}
.card__name{
  margin:0;font-size:14.5px;font-weight:700;line-height:1.33;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__short{
  margin:0;font-size:12.5px;color:var(--ink-2);line-height:1.38;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__meta{display:flex;align-items:center;gap:7px;font-size:11.5px;color:var(--ink-3);margin-top:auto}
.card__star{color:var(--star);font-weight:700}
.card__price{display:flex;align-items:baseline;gap:6px;flex-wrap:wrap}
.card__p{font-size:17px;font-weight:800;color:var(--orange);line-height:1.1}
.card__op{font-size:12px;color:var(--ink-3);text-decoration:line-through}
.card__go{margin:0 10px 10px;min-height:44px;font-size:13.5px;border-radius:11px;white-space:nowrap;letter-spacing:-.2px;padding:0 8px}
/* Màn hình rất hẹp (iPhone SE…) — thu chữ lại để nút không bị cắt */
@media (max-width:370px){
  .card__go{font-size:12px}
  .card__body{padding:8px 8px 9px}
  .card__go{margin:0 8px 8px}
}

/* ---------- Trống / xem thêm ---------- */
.empty{text-align:center;color:var(--ink-2);padding:28px 10px;font-size:15px}
.empty .btn{display:inline-flex;margin-top:12px}
.more{display:flex;justify-content:center;margin:16px 0 4px}
.more .btn{min-width:220px}

/* ---------- Vì sao chọn ---------- */
.why{max-width:720px;margin:26px auto 0;padding:0 14px}
.why h2,.faq h2{font-size:19px;margin:0 0 12px;letter-spacing:-.2px}
.why ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.why li{
  background:var(--card);border-radius:var(--r);padding:12px;
  display:flex;gap:11px;box-shadow:var(--shadow);
}
.why li>span{font-size:22px;line-height:1.2;flex:0 0 auto}
.why li b{display:block;font-size:15px;margin-bottom:2px}
.why li p{margin:0;font-size:13.5px;color:var(--ink-2);line-height:1.45}

/* ---------- FAQ ---------- */
.faq{max-width:720px;margin:26px auto 0;padding:0 14px}
.faq details{
  background:var(--card);border-radius:var(--r);margin-bottom:8px;
  box-shadow:var(--shadow);overflow:hidden;
}
.faq summary{
  padding:14px 38px 14px 14px;font-size:15px;font-weight:700;cursor:pointer;
  list-style:none;position:relative;line-height:1.4;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:14px;top:12px;
  font-size:22px;font-weight:700;color:var(--green);line-height:1;
}
.faq details[open] summary::after{content:"–"}
.faq p{margin:0;padding:0 14px 14px;font-size:14px;color:var(--ink-2);line-height:1.55}

/* ---------- Chân trang ---------- */
.foot{max-width:720px;margin:30px auto 0;padding:20px 14px 26px;border-top:1px solid var(--line)}
.foot__links{display:flex;gap:10px;margin-bottom:14px}
.foot__links a{
  flex:1;min-height:46px;display:flex;align-items:center;justify-content:center;
  background:var(--card);border:1.5px solid var(--line);border-radius:12px;
  font-size:14.5px;font-weight:700;color:var(--green);
}
.foot__dis,.foot__aff{
  font-size:12.5px;color:var(--ink-2);line-height:1.6;
  background:#FFF8E8;border:1px solid #F3E2BC;border-radius:12px;padding:11px 12px;margin:0 0 9px;
}
.foot__aff{background:var(--card);border-color:var(--line)}
.foot__c{text-align:center;font-size:12px;color:var(--ink-3);margin:14px 0 0}

/* ---------- Popup chi tiết ---------- */
.sheet{position:fixed;inset:0;z-index:60;display:flex;align-items:flex-end;justify-content:center}
.sheet[hidden]{display:none}   /* bắt buộc: nếu thiếu, popup luôn che cả trang */
.sheet__bg{position:absolute;inset:0;background:rgba(10,24,19,.5)}
.sheet__box{
  position:relative;width:100%;max-width:560px;max-height:92vh;
  background:var(--card);border-radius:20px 20px 0 0;
  display:flex;flex-direction:column;overflow:hidden;
  animation:up .22s ease-out;
}
@keyframes up{from{transform:translateY(100%)}to{transform:translateY(0)}}
.sheet__x{
  position:absolute;top:9px;right:9px;z-index:2;
  width:38px;height:38px;border:0;border-radius:50%;
  background:rgba(255,255,255,.92);box-shadow:var(--shadow);
  font-size:25px;line-height:1;cursor:pointer;color:var(--ink);
}
.sheet__scroll{overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:6px}
.sh__img{aspect-ratio:16/10;background:var(--green-l);display:grid;place-items:center;overflow:hidden}
.sh__img img{width:100%;height:100%;object-fit:cover}
.sh__img .card__ph{font-size:72px}
.sh__in{padding:14px 16px 4px}
.sh__cat{font-size:12px;font-weight:700;color:var(--green);text-transform:uppercase;letter-spacing:.3px}
.sh__name{font-size:19px;font-weight:800;margin:4px 0 8px;line-height:1.3}
.sh__row{display:flex;align-items:baseline;gap:9px;flex-wrap:wrap;margin-bottom:4px}
.sh__p{font-size:25px;font-weight:800;color:var(--orange)}
.sh__op{font-size:14.5px;color:var(--ink-3);text-decoration:line-through}
.sh__meta{font-size:13px;color:var(--ink-3);margin-bottom:14px}
.sh__h{font-size:15px;font-weight:800;margin:16px 0 7px;display:flex;align-items:center;gap:7px}
.sh__ul{margin:0;padding-left:20px}
.sh__ul li{font-size:14.5px;line-height:1.55;margin-bottom:6px;color:var(--ink-2)}
.sh__box{background:var(--green-l);border-radius:12px;padding:11px 13px;font-size:14px;line-height:1.55;color:var(--ink-2)}
.sh__note{font-size:12.5px;color:var(--ink-3);line-height:1.55;padding:14px 16px 4px;border-top:1px solid var(--line);margin-top:16px}
/* Khối nút mua nằm giữa phần giá và phần giới thiệu */
.sh__buy{padding:4px 16px 14px;border-bottom:1px solid var(--line);margin-bottom:4px}
.sh__buy .btn{width:100%;min-height:54px;font-size:17px}
.sh__buy small{display:block;text-align:center;font-size:11.5px;color:var(--ink-3);margin-top:7px}
.sheet__cta{
  padding:11px 16px calc(11px + env(safe-area-inset-bottom));
  border-top:1px solid var(--line);background:var(--card);
}
.sheet__cta .btn{width:100%;min-height:54px;font-size:17px}
.sheet__cta small{display:block;text-align:center;font-size:11.5px;color:var(--ink-3);margin-top:7px}

/* ---------- Thanh CTA dính dưới ---------- */
.dock{
  position:fixed;left:0;right:0;bottom:0;z-index:40;
  background:var(--card);border-top:1px solid var(--line);
  box-shadow:0 -4px 14px rgba(16,40,32,.08);
  padding:9px 14px calc(9px + env(safe-area-inset-bottom));
  display:flex;align-items:center;gap:10px;
}
.dock__txt{display:flex;flex-direction:column;min-width:0;flex:1}
.dock__txt b{font-size:14.5px;line-height:1.25}
.dock__txt span{font-size:11.5px;color:var(--ink-3);line-height:1.3}
.dock__btn{flex:0 0 auto;min-width:132px}

/* ---------- Máy tính / tablet ---------- */
@media (min-width:600px){
  .head{border-radius:0 0 36px 36px;padding-bottom:58px}
  .hero{padding-top:20px}
  .hero__h1{font-size:36px;letter-spacing:-1px}
  .hero__p{font-size:16px;max-width:46ch}
  .grid{grid-template-columns:repeat(3,1fr);gap:14px}
  .needs__list{grid-template-columns:repeat(3,1fr)}
  .need{min-height:62px}
  .need__t{font-size:14px}
  .card__name{font-size:15px}
  .card__go{font-size:14.5px}
  .trust{padding:16px 8px}
  .trust__i b{font-size:21px}
  .trust__i span{font-size:12.5px}
  .sheet{align-items:center}
  .sheet__box{border-radius:20px;max-height:88vh}
}
@media (min-width:900px){
  .wrap,.why,.faq,.foot,.topbar__in,.hero,.trust,.needs,.search{max-width:980px}
  .grid{grid-template-columns:repeat(4,1fr)}
  .needs__list{grid-template-columns:repeat(6,1fr)}
  .chips{max-width:980px;margin:0 auto}
  .hero__h1{font-size:42px}
}

/* ---------- Popup "đang được quan tâm" ---------- */
.pop{
  position:fixed;left:12px;z-index:45;
  bottom:calc(var(--dock-h) + 12px + env(safe-area-inset-bottom));
  width:min(318px,calc(100vw - 24px));
  background:var(--card);border:1px solid var(--line);border-radius:15px;
  box-shadow:0 12px 32px -8px rgba(9,60,43,.28);
  animation:popIn .32s cubic-bezier(.2,.8,.3,1);
}
.pop[hidden]{display:none}
.pop.is-out{animation:popOut .26s ease forwards}
@keyframes popIn{from{opacity:0;transform:translateY(16px) scale(.95)}to{opacity:1;transform:none}}
@keyframes popOut{to{opacity:0;transform:translateY(10px) scale(.97)}}
.pop__go{
  display:flex;align-items:center;gap:10px;width:100%;
  background:none;border:0;padding:9px 32px 9px 9px;
  text-align:left;cursor:pointer;border-radius:15px;
}
.pop__img{
  width:46px;height:46px;flex:0 0 46px;border-radius:10px;
  object-fit:cover;background:var(--green-l);
}
.pop__txt{display:flex;flex-direction:column;gap:3px;min-width:0}
.pop__name{
  font-size:12.5px;font-weight:700;line-height:1.3;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pop__meta{font-size:11.5px;font-weight:700;color:var(--orange);line-height:1.3}
.pop__x{
  position:absolute;top:4px;right:4px;z-index:2;
  width:26px;height:26px;border:0;border-radius:50%;
  background:transparent;color:var(--ink-3);font-size:18px;line-height:1;cursor:pointer;
}
@media (min-width:900px){ .pop{left:18px;width:340px} }

/* ---------- Giảm hiệu ứng nếu người dùng yêu cầu ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}