/* YanSun Health — style.css */
:root{
  --red:#C8102E; --red-dark:#A00D24;
  --green:#0E7A3E; --green-light:#E8F4EC;
  --ink:#1F2937; --muted:#5B6470;
  --bg:#FFFFFF; --bg-alt:#F7F6F2;
  --border:#E5E3DC; --radius:14px;
  --shadow:0 6px 24px rgba(31,41,55,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
img{max-width:100%;display:block}
a{color:var(--red);text-decoration:none}
.container{width:min(1120px,92%);margin:0 auto}
h1,h2,h3{line-height:1.25;font-weight:800}
h2{font-size:clamp(1.6rem,3vw,2.2rem);margin:.4rem 0 1rem}
.eyebrow{color:var(--red);font-weight:800;letter-spacing:.12em;text-transform:uppercase;font-size:.8rem;margin-top:1rem}
.lead{color:var(--muted);max-width:46rem;font-size:1.05rem}
.section{padding:4.2rem 0}
.section-alt{background:var(--bg-alt)}

/* NAV */
.nav{position:sticky;top:0;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);z-index:50}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:.5rem;font-weight:900;color:var(--ink);font-size:1.05rem;letter-spacing:.02em}
.logo b{color:var(--red)}
.logo-flame{filter:drop-shadow(0 0 2px rgba(200,16,46,.4))}
.nav-links{display:flex;align-items:center;gap:1.3rem}
.nav-links a{color:var(--ink);font-weight:600;font-size:.95rem}
.nav-links a:hover{color:var(--red)}
.nav-toggle{display:none;font-size:1.5rem;background:none;border:none;cursor:pointer}

/* Buttons & chips */
.btn{display:inline-block;padding:.75rem 1.4rem;border-radius:999px;font-weight:700;transition:.2s;border:2px solid transparent}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-dark);transform:translateY(-1px)}
.btn-ghost{border-color:var(--red);color:var(--red)}
.btn-ghost:hover{background:var(--red);color:#fff}
.btn-sm{padding:.45rem 1rem;font-size:.85rem}
.chips{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;margin-top:1.2rem}
.chips li{border:1px solid var(--border);background:#fff;border-radius:999px;padding:.3rem .85rem;font-size:.8rem;font-weight:700;color:var(--green)}
.chips-lg li{font-size:.9rem;padding:.45rem 1.1rem}

/* HERO */
.hero{padding:4.5rem 0 3rem;background:linear-gradient(160deg,#fff 55%,var(--green-light))}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:2.5rem;align-items:center}
.hero h1{font-size:clamp(2rem,4.5vw,3.1rem)}
.accent{color:var(--red)}
.hero .lead{margin:1rem 0 1.5rem}
.hero-cta{display:flex;gap:.9rem;flex-wrap:wrap}
.hero-art img{border-radius:var(--radius);box-shadow:var(--shadow)}

/* STATS */
.stats{background:var(--red);color:#fff;padding:1.6rem 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;text-align:center}
.stats b{font-size:1.9rem;display:block}
.stats span{font-size:.82rem;opacity:.9}

/* Layout helpers */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem;margin:1.6rem 0}
.three-col{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin:1.6rem 0}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1.4rem;box-shadow:var(--shadow)}
.card h3{margin-bottom:.5rem}
.card p{color:var(--muted);font-size:.95rem}
.section-alt .card{background:#fff}
.wide-img{border-radius:var(--radius);box-shadow:var(--shadow)}

/* PRODUCTS */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin-top:1.8rem}
.product-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);padding-bottom:1.2rem}
.product-card img{height:150px;width:100%;object-fit:cover;object-position:center}
.product-card h3{padding:.9rem 1.2rem .2rem}
.product-card .tag{color:var(--green);font-weight:700;font-size:.78rem;padding:0 1.2rem;text-transform:uppercase;letter-spacing:.05em}
.product-card ul{list-style:none;padding:.5rem 1.2rem 0}
.product-card li{font-size:.9rem;color:var(--muted);padding:.15rem 0;padding-left:1rem;position:relative}
.product-card li::before{content:"•";color:var(--red);position:absolute;left:0}
.product-card .note{padding:.5rem 1.2rem 0;font-size:.82rem;color:var(--green);font-style:italic}
.pet-banner{display:flex;align-items:center;justify-content:space-between;gap:1rem;background:linear-gradient(90deg,var(--green),#136b3a);color:#fff;border-radius:var(--radius);padding:1.4rem 1.6rem;margin-top:1.8rem}
.pet-banner p{color:#EAF6EE;font-size:.95rem}
.pet-banner .btn-ghost{border-color:#fff;color:#fff}
.pet-banner .btn-ghost:hover{background:#fff;color:var(--green)}
.customize{margin-top:2rem;text-align:center}
.customize .chips{justify-content:center}

/* PROCESS */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem;margin:1.8rem 0}
.step{background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius);padding:1.2rem;position:relative}
.step i{font-style:normal;display:inline-flex;width:34px;height:34px;border-radius:50%;background:var(--red);color:#fff;font-weight:800;align-items:center;justify-content:center;margin-bottom:.6rem}
.step h4{font-size:1rem}
.step p{font-size:.85rem;color:var(--muted)}
.packaging{background:var(--green-light);border-radius:var(--radius);padding:1.3rem 1.5rem}
.packaging h3{color:var(--green)}
.packaging p{color:var(--muted);font-size:.95rem}

/* QUALITY */
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1.6rem;list-style:none}
.cert-grid li{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:1rem 1.2rem;box-shadow:var(--shadow)}
.cert-grid b{display:block;font-size:1.1rem;color:var(--red)}
.cert-grid span{font-size:.82rem;color:var(--muted)}

/* CONTACT */
.contact{background:linear-gradient(160deg,var(--bg-alt),var(--green-light))}
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:1.6rem;margin-top:1.6rem}
.form{display:flex;flex-direction:column;gap:.8rem}
.form input,.form select,.form textarea{padding:.8rem 1rem;border:1px solid var(--border);border-radius:10px;font:inherit;background:#fff;width:100%}
.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--green);border-color:transparent}
.contact-direct{display:flex;flex-direction:column;gap:1.2rem}
.contact-direct a{font-weight:700}

/* FOOTER */
.footer{background:var(--ink);color:#cbd2d9;padding:2.2rem 0}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap}
.footer .logo-text{color:#fff}
.footer .logo-text b{color:#ff5a70}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
.reveal.visible{opacity:1;transform:none}

/* Language switcher */
.lang-switch{display:flex;gap:.3rem}
.lang-switch button{background:#fff;border:1px solid var(--border);border-radius:8px;padding:.28rem .6rem;font-size:.8rem;font-weight:700;color:var(--muted);cursor:pointer;font-family:inherit}
.lang-switch button:hover{border-color:var(--red);color:var(--red)}
.lang-switch button.active{background:var(--red);border-color:var(--red);color:#fff}

/* RTL (Arabic) */
[dir="rtl"] .product-card li{padding-left:0;padding-right:1rem}
[dir="rtl"] .product-card li::before{left:auto;right:0}
[dir="rtl"] .step i{margin-left:.6rem;margin-right:0}
[dir="rtl"] .eyebrow{letter-spacing:0}

/* ===== LOGO (image) ===== */
.logo-img{height:42px;width:auto;display:block}

/* ===== VISION BANNER ===== */
.vision-banner{background:linear-gradient(105deg,#A00D24 0%,var(--red) 30%,#7A4A3A 52%,var(--green) 78%,#0A5C30 100%);color:#fff;padding:2.6rem 0}
.vb-inner{display:flex;align-items:center;justify-content:center;gap:1.4rem;flex-wrap:wrap;text-align:center}
.vb-logo{height:56px;width:auto;background:rgba(255,255,255,.92);border-radius:12px;padding:.45rem .8rem}
.vb-slogan{font-size:clamp(1.5rem,3.4vw,2.3rem);font-weight:900;letter-spacing:.02em;text-shadow:0 2px 12px rgba(0,0,0,.35);line-height:1.2}
.vb-sub{font-size:.85rem;letter-spacing:.28em;text-transform:uppercase;opacity:.85;margin-top:.35rem}

/* ===== ABOUT with photo ===== */
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:1.4rem;margin:1.6rem 0;align-items:stretch}
.about-photo{margin:0;position:relative}
.about-photo img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%;height:100%;object-fit:cover}
.about-photo figcaption{position:absolute;left:.9rem;bottom:.9rem;background:rgba(31,41,55,.78);color:#fff;font-size:.78rem;padding:.3rem .8rem;border-radius:999px}
.about-cards{display:flex;flex-direction:column;gap:1.4rem}

/* ===== PRODUCT CARD CTA ===== */
.product-card{display:flex;flex-direction:column}
.card-cta{margin:auto 1.2rem 0;text-align:center}
.product-card .note{flex:1}

/* ===== WHATSAPP BUTTON ===== */
.btn-whatsapp{background:#25D366;color:#fff}
.btn-whatsapp:hover{background:#1DA851;transform:translateY(-1px)}

/* ===== FACILITY: videos + gallery ===== */
.video-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1.1rem;margin:1.8rem 0 2.2rem}
.video-card{margin:0;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s}
.video-card:hover{transform:translateY(-4px)}
.video-card video{width:100%;aspect-ratio:9/16;object-fit:cover;display:block;background:#111}
.video-card figcaption{padding:.55rem .8rem;font-size:.8rem;font-weight:700;color:var(--muted);text-align:center}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
.g-item{margin:0;position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);cursor:zoom-in;border:1px solid var(--border)}
.g-item img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .35s}
.g-item:hover img{transform:scale(1.045)}
.g-item figcaption{position:absolute;left:.7rem;bottom:.7rem;background:rgba(31,41,55,.78);color:#fff;font-size:.75rem;padding:.25rem .7rem;border-radius:999px;pointer-events:none}
.gallery-note{text-align:center;color:var(--muted);font-size:.88rem;margin-top:1.2rem}

/* ===== FLOATING BUTTONS ===== */
.float-wa{position:fixed;right:1.2rem;bottom:1.2rem;width:56px;height:56px;border-radius:50%;background:#25D366;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(37,211,102,.45);z-index:60;transition:transform .2s}
.float-wa:hover{transform:scale(1.08)}
.float-top{position:fixed;right:1.45rem;bottom:5.4rem;width:42px;height:42px;border-radius:50%;background:#fff;color:var(--red);border:1.5px solid var(--red);font-size:1.15rem;font-weight:900;cursor:pointer;box-shadow:var(--shadow);z-index:60;opacity:0;pointer-events:none;transition:opacity .25s}
.float-top.show{opacity:1;pointer-events:auto}
.float-top:hover{background:var(--red);color:#fff}

/* ===== LIGHTBOX ===== */
.lightbox{position:fixed;inset:0;background:rgba(15,18,22,.9);display:none;align-items:center;justify-content:center;flex-direction:column;z-index:100;padding:2rem}
.lightbox.open{display:flex}
.lightbox img{max-width:min(1100px,94vw);max-height:82vh;border-radius:10px;box-shadow:0 10px 40px rgba(0,0,0,.5)}
.lightbox p{color:#fff;margin-top:.9rem;font-size:.95rem}
.lb-close{position:absolute;top:1.1rem;right:1.3rem;background:rgba(255,255,255,.12);color:#fff;border:none;width:44px;height:44px;border-radius:50%;font-size:1.2rem;cursor:pointer}
.lb-close:hover{background:var(--red)}

/* Responsive */
@media (max-width:900px){
  .hero-grid,.contact-grid,.two-col,.about-grid{grid-template-columns:1fr}
  .three-col,.product-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .video-strip{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;top:64px;right:0;left:0;background:#fff;flex-direction:column;padding:1.2rem;border-bottom:1px solid var(--border)}
  .nav-links.open{display:flex}
}
@media (max-width:560px){
  .three-col,.product-grid,.steps,.gallery,.video-strip{grid-template-columns:1fr}
  .pet-banner{flex-direction:column;text-align:center}
  .video-card video{aspect-ratio:16/10}
  .logo-img{height:34px}
}

/* ===== v4: multi-page layout ===== */
.nav-links a.active{color:var(--red)}

.page-hero{padding:3.4rem 0 2.2rem;background:linear-gradient(160deg,#fff 60%,var(--green-light))}
.page-hero .eyebrow{margin-top:0}
.page-hero .lead{margin-top:.4rem}

.origin-line{margin-top:1rem;font-weight:700;color:var(--green)}

.hero-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);aspect-ratio:4/3}
.hero-media video{width:100%;height:100%;object-fit:cover;display:block}
.hero-media figcaption{position:absolute;left:.9rem;bottom:.9rem;background:rgba(31,41,55,.78);color:#fff;font-size:.78rem;padding:.3rem .8rem;border-radius:999px}

.qf-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:1rem;margin-top:1.8rem}
.qf{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);text-align:center;transition:transform .2s;display:block}
.qf:hover{transform:translateY(-4px)}
.qf img{height:92px;width:100%;object-fit:cover}
.qf span{display:block;padding:.65rem .4rem;font-weight:700;font-size:.88rem;color:var(--ink)}

.center-cta{text-align:center;margin-top:1.8rem}

.cta-band{background:linear-gradient(105deg,var(--red-dark),var(--red) 55%,#7A4A3A);color:#fff;padding:3rem 0;text-align:center}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.92);max-width:46rem;margin:.4rem auto 0}
.cta-band .btn{margin-top:1.4rem}
.btn-light{background:#fff;color:var(--red)}
.btn-light:hover{background:var(--green-light);transform:translateY(-1px)}

.footer-nav{display:flex;flex-wrap:wrap;gap:.4rem 1rem;margin-top:.8rem;font-size:.85rem}
.footer-nav a{color:#cbd2d9}
.footer-nav a:hover{color:#fff}

.origin-note{background:var(--green-light);border-left:4px solid var(--green);padding:1rem 1.2rem;border-radius:10px;margin:1.2rem 0;font-weight:600}
[dir="rtl"] .origin-note{border-left:0;border-right:4px solid var(--green)}

@media (max-width:900px){
  .qf-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:560px){
  .qf-grid{grid-template-columns:repeat(2,1fr)}
}