/* ============================================================
   VỆ SINH CHUYÊN NGHIỆP PHỐ XANH — style.css
   Tông màu: xanh lá + trắng, phong cách chuyên nghiệp
   ============================================================ */

/* ---------- Reset / base ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --green:#1a8f3c;
  --green-dark:#0f7130;
  --green-darker:#0a5222;
  --green-soft:#e9f6ed;
  --green-soft-2:#f4faf5;
  --blue:#2ca9e1;
  --blue-dark:#1c86b8;
  --ink:#1f2a25;
  --text:#37423c;
  --muted:#6c776f;
  --line:#e3e9e4;
  --white:#ffffff;
  --amber:#f4a723;
  --shadow-sm:0 1px 3px rgba(16,45,25,.08),0 1px 2px rgba(16,45,25,.06);
  --shadow-md:0 8px 24px rgba(16,45,25,.10);
  --shadow-lg:0 20px 45px rgba(16,45,25,.16);
  --radius:14px;
  --radius-sm:10px;
  --maxw:1180px;
  --font:"Be Vietnam Pro","Segoe UI",Roboto,system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --header-h:144px;   /* chiều cao topbar + header, dùng để chừa chỗ khi header cố định */
}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 12px)}
body{
  font-family:var(--font);
  color:var(--text);
  background:var(--white);
  line-height:1.7;
  font-size:16.5px;
  padding-top:var(--header-h);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--green-dark);text-decoration:none;transition:color .15s ease}
a:hover{color:var(--green)}
h1,h2,h3,h4{color:var(--ink);line-height:1.25;font-weight:700}
h1{font-size:clamp(1.9rem,3.4vw,2.9rem)}
h2{font-size:clamp(1.5rem,2.6vw,2.15rem)}
h3{font-size:1.2rem}
p{margin:0 0 1rem}
ul,ol{margin:0 0 1rem 1.25rem}
li{margin:.35rem 0}
strong{color:var(--ink)}

/* ---------- Layout helpers ---------- */
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:70px 0}
.section--soft{background:var(--green-soft-2)}
.section--green{background:linear-gradient(135deg,var(--green),var(--green-dark));color:#eafaee}
.section--green h2,.section--green h3{color:#fff}
.section-head{text-align:center;max-width:720px;margin:0 auto 46px}
.section-head .eyebrow{display:inline-block;font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.78rem;color:var(--green);background:var(--green-soft);padding:6px 14px;border-radius:999px;margin-bottom:14px}
.section-head p{color:var(--muted);margin:0}
.text-center{text-align:center}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  font-weight:700;font-size:.98rem;
  padding:13px 24px;border-radius:999px;border:2px solid transparent;
  cursor:pointer;transition:transform .12s ease,box-shadow .15s ease,background .15s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px}
.btn--primary{background:var(--green);color:#fff;box-shadow:var(--shadow-sm)}
.btn--primary:hover{background:var(--green-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn--ghost:hover{background:#fff;color:var(--green-dark)}
.btn--outline{background:#fff;color:var(--green-dark);border-color:var(--green)}
.btn--outline:hover{background:var(--green);color:#fff}
.btn--amber{background:var(--amber);color:#4a3100}
.btn--amber:hover{background:#e0980f;color:#4a3100;transform:translateY(-2px)}
.btn--lg{padding:16px 30px;font-size:1.05rem}

/* ---------- Top bar ---------- */
.topbar{background:var(--green-darker);color:#d7efdd;font-size:.86rem}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:40px;flex-wrap:wrap}
.topbar a{color:#eafaee}
.topbar a:hover{color:#fff}
.topbar__info{display:flex;gap:22px;flex-wrap:wrap}
.topbar__info span{display:inline-flex;align-items:center;gap:7px}
.topbar__info svg{width:15px;height:15px;opacity:.85}
.topbar__social{display:flex;gap:14px}

/* ---------- Header (cố định trên cùng) ---------- */
#site-header{position:fixed;top:0;left:0;right:0;z-index:100}
.site-header{background:#fff;box-shadow:var(--shadow-md)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:102px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand img{height:78px;width:auto;display:block}
/* Logo ảnh đã có tên công ty nên ẩn phần chữ lặp lại bên cạnh */
.brand__text{display:none}
.brand__text strong{display:block;color:var(--green-dark);font-size:1.15rem;line-height:1.1;letter-spacing:.02em}
.brand__text span{font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}
.main-nav{display:flex;align-items:center;gap:2px;flex-wrap:nowrap}
.main-nav a{
  color:var(--ink);font-weight:600;font-size:.94rem;padding:9px 12px;border-radius:8px;position:relative;white-space:nowrap;
}
.main-nav a:hover{color:var(--green-dark);background:var(--green-soft)}
.main-nav a.is-active{color:var(--green-dark)}
.main-nav a.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--green);border-radius:2px}
.header-cta{display:flex;align-items:center;gap:12px}
.header-phone{display:flex;align-items:center;gap:9px;font-weight:800;color:var(--green-dark);font-size:1.05rem}
.header-phone svg{width:20px;height:20px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle svg{width:28px;height:28px;color:var(--ink)}

/* ---------- Hero ---------- */
.hero{position:relative;color:#fff;overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__bg img{width:100%;height:100%;object-fit:cover}
.hero__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(10,66,29,.92) 0%,rgba(15,113,48,.82) 45%,rgba(15,113,48,.45) 100%)}
.hero__inner{position:relative;z-index:1;padding:90px 0 96px;max-width:660px}
.hero__inner .eyebrow{display:inline-block;font-weight:700;letter-spacing:.14em;text-transform:uppercase;font-size:.78rem;background:rgba(255,255,255,.16);padding:7px 15px;border-radius:999px;margin-bottom:20px}
.hero h1{color:#fff;margin-bottom:18px}
.hero p{font-size:1.12rem;color:#e9f7ec;margin-bottom:30px}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap}
.hero__trust{margin-top:34px;display:flex;gap:28px;flex-wrap:wrap}
.hero__trust div{display:flex;flex-direction:column}
.hero__trust b{font-size:1.6rem;color:#fff}
.hero__trust span{font-size:.85rem;color:#cdeed5}

/* page hero (inner) */
.page-hero{background:linear-gradient(135deg,var(--green-dark),var(--green-darker));color:#eafaee;padding:54px 0}
.page-hero h1{color:#fff;margin-bottom:10px}
.page-hero p{color:#cfebd6;max-width:640px;margin:0}
.breadcrumb{font-size:.85rem;color:#bfe3c8;margin-bottom:14px}
.breadcrumb a{color:#eafaee}
.breadcrumb span{opacity:.7;margin:0 6px}

/* ---------- Cards ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .15s ease,box-shadow .18s ease;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.card__media{aspect-ratio:16/10;overflow:hidden;background:var(--green-soft)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card__media img{transform:scale(1.06)}
.card__body{padding:22px;display:flex;flex-direction:column;flex:1}
.card__body h3{margin-bottom:8px}
.card__body p{color:var(--muted);font-size:.95rem;flex:1}
.card__link{margin-top:14px;font-weight:700;color:var(--green-dark);display:inline-flex;align-items:center;gap:6px}
.card__link svg{width:16px;height:16px;transition:transform .15s ease}
.card:hover .card__link svg{transform:translateX(4px)}

/* feature (why choose) */
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}
.feature__icon{width:52px;height:52px;border-radius:12px;background:var(--green-soft);color:var(--green-dark);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feature__icon svg{width:26px;height:26px}
.feature h3{font-size:1.08rem;margin-bottom:6px}
.feature p{color:var(--muted);font-size:.92rem;margin:0}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stats b{display:block;font-size:2.4rem;color:#fff;line-height:1}
.stats span{color:#d6f0dd;font-size:.92rem}

/* process */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;padding:28px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.step::before{counter-increment:step;content:counter(step);position:absolute;top:-18px;left:22px;width:40px;height:40px;border-radius:50%;background:var(--green);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm)}
.step h3{font-size:1.05rem;margin:10px 0 6px}
.step p{color:var(--muted);font-size:.9rem;margin:0}

/* split / about */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.split__media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}
.split__media img{width:100%;height:100%;object-fit:cover}
.check-list{list-style:none;margin:1rem 0 0;padding:0}
.check-list li{display:flex;gap:12px;align-items:flex-start;margin:.7rem 0}
.check-list svg{width:22px;height:22px;color:var(--green);flex-shrink:0;margin-top:2px}

/* ---------- Content / article ---------- */
.content{max-width:820px;margin:0 auto}
.content h2{margin:2rem 0 .8rem}
.content h3{margin:1.6rem 0 .6rem;color:var(--green-dark)}
.content img{border-radius:var(--radius);margin:1.4rem 0;box-shadow:var(--shadow-sm)}
.content ul{list-style:none;padding:0}
.content ul li{position:relative;padding-left:26px}
.content ul li::before{content:"";position:absolute;left:2px;top:11px;width:8px;height:8px;border-radius:50%;background:var(--green)}
.content--wide{max-width:960px}
.callout{background:var(--green-soft);border-left:4px solid var(--green);border-radius:8px;padding:18px 22px;margin:1.6rem 0}
.callout p:last-child{margin:0}

/* figure + caption */
.content figure{margin:1.6rem 0}
.content figure img{margin:0;width:100%}
.content figcaption{margin-top:8px;font-size:.9rem;color:var(--muted);text-align:center;font-style:italic}
/* trước / sau */
.ba-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:1.6rem 0}
.ba-grid figure{margin:0}
.ba-grid figcaption{font-weight:700;font-style:normal;color:var(--green-dark)}
@media (max-width:640px){.ba-grid{grid-template-columns:1fr}}
/* video */
.video-wrap{margin:1.6rem 0;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);background:#000;line-height:0}
.video-wrap video{width:100%;max-height:72vh;display:block}

/* ---------- Tables (pricing) ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);margin:1.4rem 0}
table.price{width:100%;border-collapse:collapse;min-width:560px;font-size:.95rem}
table.price caption{caption-side:top;text-align:left;font-weight:700;color:var(--green-dark);padding:16px 18px 6px;font-size:1.05rem}
table.price th,table.price td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
table.price thead th{background:var(--green);color:#fff;font-weight:700;border-bottom:0}
table.price tbody tr:nth-child(even){background:var(--green-soft-2)}
table.price tbody tr:hover{background:var(--green-soft)}
table.price td:last-child{font-weight:700;color:var(--green-dark);white-space:nowrap}
.price-note{font-size:.9rem;color:var(--muted)}

/* ---------- Gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gallery a{display:block;border-radius:var(--radius-sm);overflow:hidden;aspect-ratio:1/1;box-shadow:var(--shadow-sm)}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.gallery a:hover img{transform:scale(1.08)}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(135deg,var(--green),var(--green-dark));color:#fff;border-radius:calc(var(--radius) + 4px);padding:44px;text-align:center;box-shadow:var(--shadow-md)}
.cta-band h2{color:#fff;margin-bottom:10px}
.cta-band p{color:#e2f6e7;max-width:620px;margin:0 auto 22px}
.cta-band .btn--primary{background:#fff;color:var(--green-dark)}
.cta-band .btn--primary:hover{background:var(--amber);color:#4a3100}
.cta-band__actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.info-list{list-style:none;margin:0;padding:0}
.info-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.info-list li:last-child{border-bottom:0}
.info-list .ico{width:44px;height:44px;flex-shrink:0;border-radius:10px;background:var(--green-soft);color:var(--green-dark);display:flex;align-items:center;justify-content:center}
.info-list .ico svg{width:22px;height:22px}
.info-list b{display:block;color:var(--ink)}
.info-list span,.info-list a{color:var(--muted)}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px;color:var(--ink)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;font-size:.95rem;color:var(--text);background:#fdfefb;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:2px solid var(--green);border-color:var(--green);background:#fff}
.map-embed{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.map-embed iframe{width:100%;height:340px;border:0;display:block}
.form-note{font-size:.85rem;color:var(--muted);margin-top:4px}

/* ---------- Footer ---------- */
.site-footer{background:var(--green-darker);color:#c9e6d1;padding:60px 0 26px;font-size:.93rem}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:16px;letter-spacing:.02em}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px}
.site-footer a{color:#c9e6d1}
.site-footer a:hover{color:#fff}
.footer-brand img{height:56px;background:#fff;border-radius:10px;padding:8px;margin-bottom:14px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin:.5rem 0}
.footer-contact{list-style:none;margin:0;padding:0}
.footer-contact li{display:flex;gap:10px;margin:.6rem 0}
.footer-contact svg{width:17px;height:17px;flex-shrink:0;margin-top:3px;opacity:.85}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:44px;padding-top:22px;text-align:center;color:#a9d3b5;font-size:.85rem}

/* ---------- Floating actions ---------- */
.floaters{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:12px}
.floaters a{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);color:#fff;font-weight:800}
.floaters svg{width:26px;height:26px}
.fl-call{background:var(--green)}
.fl-zalo{background:var(--blue);font-size:.82rem;letter-spacing:.02em}
.fl-call{animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(26,143,60,.55)}70%{box-shadow:0 0 0 16px rgba(26,143,60,0)}100%{box-shadow:0 0 0 0 rgba(26,143,60,0)}}
.to-top{position:fixed;right:18px;bottom:150px;z-index:60;width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-md);display:none;align-items:center;justify-content:center;cursor:pointer}
.to-top.show{display:flex}
.to-top svg{width:22px;height:22px;color:var(--green-dark)}

/* ---------- Misc ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:1rem 0}
.tag{background:var(--green-soft);color:var(--green-dark);font-weight:600;font-size:.85rem;padding:6px 14px;border-radius:999px}
.post-meta{color:var(--muted);font-size:.86rem;margin-bottom:10px;display:flex;gap:16px;flex-wrap:wrap}
.post-meta span{display:inline-flex;align-items:center;gap:6px}
.post-meta svg{width:15px;height:15px}
.related h2{margin-bottom:24px}
.two-col{columns:2;column-gap:40px}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:30px}
}

/* Header: gộp menu vào nút khi màn hình hẹp, tránh chữ xuống dòng */
@media (max-width:1040px){
  :root{--header-h:130px}
  .site-header .container{min-height:88px}
  .brand img{height:66px}
  .nav-toggle{display:block}
  .header-cta .btn{display:none}
  .main-nav{
    position:fixed;inset:130px 0 auto 0;background:#fff;flex-direction:column;align-items:stretch;
    padding:12px 20px 20px;box-shadow:var(--shadow-md);transform:translateY(-135%);transition:transform .25s ease;gap:2px;
    max-height:calc(100vh - 130px);overflow-y:auto;border-top:1px solid var(--line);
  }
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:14px 10px;border-bottom:1px solid var(--line);border-radius:0;font-size:1rem}
  .main-nav a.is-active::after{display:none}
}

@media (max-width:860px){
  .grid-2,.grid-3,.contact-grid{grid-template-columns:1fr}
  .two-col{columns:1}
  .section{padding:52px 0}
  .cta-band{padding:32px 22px}
  .topbar__info{display:none}
  .topbar .container{justify-content:center}
  :root{--header-h:126px}
  .main-nav{inset-block-start:126px;max-height:calc(100vh - 126px)}
}
@media (max-width:520px){
  :root{--header-h:112px}
  .grid-4,.stats,.steps,.gallery{grid-template-columns:1fr 1fr}
  .brand img{height:54px}
  .site-header .container{min-height:72px}
  .main-nav{inset-block-start:110px;max-height:calc(100vh - 110px)}
  .hero__inner{padding:64px 0}
  .hero__trust{gap:18px}
}