/* ============================================================
   Thợ Ép Bùn theme — main stylesheet
   Bảng màu: cam an toàn + thép công nghiệp (bộ nhận diện duyệt 12/09/2026).
   Kiến trúc CSS fork từ Tplus (biến --token, dark-mode qua prefers-color-scheme),
   đổi toàn bộ giá trị + phần lớn class UI sang bản gọn hơn cho site này.
   ============================================================ */

:root{
  --accent:#e8590c; --accent-2:#c24807; --accent-tint:#fde9dc; --accent-ink:#fff9f5;
  --steel:#2b3a4a; --steel-2:#20303e; --steel-ink:#eceeef;
  --bg:#f2f4f5; --card:#ffffff; --line:#d8dee2;
  --ink:#161b1f; --muted:#5b6670;
  --ok:#1c7d55; --ok-bg:#e5f3ec;
  --mud:#7a4a26; --water:#1487a8;
  --sh:0 1px 2px rgba(20,30,40,.04), 0 8px 24px -14px rgba(20,30,40,.16);
  --maxw:1120px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#12171b; --card:#1b2226; --line:#2c363c; --ink:#eceeef; --muted:#9aa7af;
    --accent:#ff7a29; --accent-2:#ff9152; --accent-tint:#3a2415; --accent-ink:#1b0f06;
    --steel:#0e151b; --steel-2:#17222a; --steel-ink:#eceeef;
    --ok:#57c495; --ok-bg:#12281f;
    --mud:#b3763f; --water:#4fc3dd;
    --sh:0 1px 2px rgba(0,0,0,.35), 0 12px 34px -16px rgba(0,0,0,.65);
  }
}
:root[data-theme="dark"]{
  --bg:#12171b; --card:#1b2226; --line:#2c363c; --ink:#eceeef; --muted:#9aa7af;
  --accent:#ff7a29; --accent-2:#ff9152; --accent-tint:#3a2415; --accent-ink:#1b0f06;
  --steel:#0e151b; --steel-2:#17222a; --steel-ink:#eceeef;
  --ok:#57c495; --ok-bg:#12281f;
  --mud:#b3763f; --water:#4fc3dd;
  --sh:0 1px 2px rgba(0,0,0,.35), 0 12px 34px -16px rgba(0,0,0,.65);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto} *{animation:none!important;transition:none!important}}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Archivo",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto}
a{color:var(--accent);text-underline-offset:2px}
a:hover{color:var(--accent-2)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(16px,4vw,32px)}
h1,h2,h3,h4{font-family:"Big Shoulders Display",sans-serif;text-transform:uppercase;line-height:1.02;letter-spacing:.005em;color:var(--ink);text-wrap:balance}
h1{font-size:clamp(1.9rem,4.4vw,2.9rem);font-weight:800;margin:0 0 .45em}
h2{font-size:clamp(1.4rem,3vw,1.9rem);font-weight:800;margin:1.4em 0 .5em}
h3{font-size:1.2rem;font-weight:700;margin:1.4em 0 .35em}
h4{font-size:1rem;font-weight:700;margin:1.2em 0 .3em;text-transform:none}
p{margin:0 0 1em}
strong{font-weight:600}
.muted{color:var(--muted)}
.center{text-align:center}
:focus-visible{outline:2.5px solid var(--accent);outline-offset:2px;border-radius:3px}
.screen-reader-text{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--card);padding:10px 16px;border:1px solid var(--line);border-radius:0 0 8px 0;z-index:100}
.skip-link:focus{left:0}
.eyebrow{font-family:"JetBrains Mono",monospace;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin:0 0 10px}

/* ---------- wordmark + ký hiệu đĩa lệch pha 90° (Slit Saver) ---------- */
.wordmark-lockup{display:inline-flex;align-items:center;gap:9px}
.wordmark{font-family:"Big Shoulders Display";font-weight:800;text-transform:uppercase;font-size:1.4rem;letter-spacing:.005em;
  background-image:linear-gradient(90deg,var(--mud),var(--water));-webkit-background-clip:text;background-clip:text;color:transparent}
.wordmark--compact{font-family:"JetBrains Mono";font-weight:600;font-size:1.15rem;text-transform:none;letter-spacing:-.01em}
.wordmark--compact .dot{color:var(--accent)}
.brand-mark{flex:none;display:block;border-radius:6px}

/* ---------- header ---------- */
header.site{position:sticky;top:0;z-index:50;background:var(--bg);border-bottom:1px solid var(--line)}
@supports (backdrop-filter:blur(1px)){header.site{background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px)}}
.admin-bar header.site{top:32px}
@media (max-width:782px){.admin-bar header.site{top:46px}}
header.site .wrap{display:flex;align-items:center;gap:18px;height:66px}
.brand{display:flex;align-items:center;flex:none;text-decoration:none}
.brand img,.brand .custom-logo{height:32px;width:auto;max-width:180px;display:block}
footer .fcol img.custom-logo{height:auto;width:74px}
nav.main{display:flex;gap:2px;margin-left:auto;flex-wrap:wrap}
nav.main ul{display:flex;gap:2px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
nav.main a{
  font-family:"Archivo",sans-serif;font-size:.9rem;font-weight:600;color:var(--ink);
  text-decoration:none;padding:8px 11px;border-radius:6px;white-space:nowrap;display:block;
}
nav.main a:hover{background:var(--accent-tint);color:var(--accent)}
nav.main .current-menu-item > a{color:var(--accent);background:var(--accent-tint)}
.hdr-cta{flex:none;margin-left:10px}
.burger{display:none;margin-left:8px;background:none;border:1px solid var(--line);border-radius:6px;padding:7px 9px;cursor:pointer;color:var(--ink);font-size:1rem}
@media(max-width:900px){
  nav.main{position:fixed;inset:66px 0 auto 0;background:var(--card);padding:8px;border-bottom:1px solid var(--line);margin:0;display:none;box-shadow:var(--sh)}
  nav.main.open{display:block}
  nav.main ul{flex-direction:column;gap:0}
  nav.main a{padding:12px;border-radius:6px}
  .burger{display:block}
  .hdr-cta{display:none}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:7px;font-family:"Archivo",sans-serif;font-weight:700;
  font-size:.88rem;text-transform:uppercase;letter-spacing:.02em;text-decoration:none;border-radius:4px;
  padding:11px 18px;border:1.5px solid transparent;cursor:pointer;
}
.btn.pri{background:var(--accent);color:var(--accent-ink)}
.btn.pri:hover{background:var(--accent-2);color:var(--accent-ink)}
.btn.ghost{border-color:var(--line);color:var(--ink);background:var(--card)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- generic page ---------- */
main{display:block}
.page-body{padding:clamp(28px,5vw,52px) 0 64px}
.crumb{font-family:"JetBrains Mono",monospace;font-size:12px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--muted)}
.lede{font-size:1.1rem;color:var(--muted);max-width:66ch;margin:0 0 1.4em}
.prose{max-width:76ch}
.prose > ul,.prose > ol{max-width:72ch}
.article-wrap .prose{max-width:74ch}

/* ---------- hero (trang chủ) — không phụ thuộc ảnh, chờ ảnh hero thật ---------- */
.hero{background:var(--steel);color:var(--steel-ink);padding:clamp(48px,8vw,84px) 0 clamp(40px,6vw,64px);
  background-image:radial-gradient(ellipse 900px 400px at 85% 0%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%)}
.hero h1{color:var(--steel-ink);max-width:20ch;margin-bottom:.5em}
.hero .eyebrow{color:var(--accent-2)}
.hero-lede{font-size:clamp(1rem,1.6vw,1.18rem);color:#c7d0d6;max-width:58ch;margin:0 0 1.6em}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero .btn.ghost{color:var(--steel-ink);border-color:#4a5c6b;background:transparent}
.hero .btn.ghost:hover{border-color:var(--accent-2);color:var(--accent-2)}

/* ---------- device strip (trang chủ) ---------- */
.device-strip{border-bottom:1px solid var(--line);background:var(--card)}
.device-strip .wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(10px,2vw,20px);padding:clamp(18px,3vw,28px) clamp(16px,4vw,32px)}
@media(max-width:640px){.device-strip .wrap{grid-template-columns:1fr;max-width:320px}}
.device-card{display:flex;flex-direction:column;align-items:center;gap:10px;text-decoration:none}
.device-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;border:1px solid var(--line);transition:.15s}
.device-card span{font-family:"JetBrains Mono",monospace;font-size:.82rem;font-weight:600;text-transform:uppercase;letter-spacing:.03em;color:var(--ink)}
.device-card:hover img{border-color:var(--accent)}
.device-card:hover span{color:var(--accent)}

/* ---------- section ---------- */
.sec{padding:clamp(30px,5vw,52px) 0}
.sec h2{margin-top:0}
.sec--alt{background:var(--card);border-block:1px solid var(--line)}

/* ---------- cards grid ---------- */
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}
@media(max-width:560px){.g2{grid-template-columns:1fr}}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:6px;padding:22px;box-shadow:var(--sh);
  display:flex;flex-direction:column;gap:8px;text-decoration:none;color:inherit;
}
a.card:hover{border-color:var(--accent);transform:translateY(-2px);transition:.15s}
.card h2,.card h3{margin:0;font-size:1.1rem}
.card p{margin:0;font-size:.92rem;color:var(--muted)}
.card .meta{font-family:"JetBrains Mono",monospace;font-size:11px;color:var(--muted);margin-top:auto}
.pill{display:inline-block;align-self:flex-start;font-family:"JetBrains Mono",monospace;font-size:10.5px;font-weight:600;letter-spacing:.04em;
  text-transform:uppercase;padding:3px 8px;border-radius:3px;background:var(--accent-tint);color:var(--accent)}

/* ---------- kiến trúc sản phẩm — 3 tầng (hub "san-pham") ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:8px}
@media(max-width:760px){.tier-grid{grid-template-columns:1fr}}
.tier-card{
  display:flex;flex-direction:column;text-decoration:none;color:inherit;overflow:hidden;
  border:1px solid var(--line);border-radius:8px;background:var(--card);box-shadow:var(--sh);
}
.tier-card img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.tier-body{display:flex;flex-direction:column;gap:8px;padding:20px 22px}
.tier-card:hover{border-color:var(--accent);transform:translateY(-2px);transition:.15s}
.tier-card h3{margin:0;font-size:1.3rem}
.tier-card p{margin:0;color:var(--muted);font-size:.9rem;line-height:1.55}
.tier-signature{border-color:var(--accent);border-width:2px;background:var(--accent-tint)}

/* ---------- trích dẫn nổi bật ---------- */
.tldr{background:var(--accent-tint);border:1px solid color-mix(in srgb,var(--accent) 35%,transparent);border-radius:6px;padding:18px 20px;margin:20px 0}
.tldr p:last-child{margin-bottom:0}
.tldr .lbl{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-2);margin:0 0 8px;font-weight:600}

/* ---------- tables / faq (giữ tối thiểu, mở rộng khi có nội dung dùng tới) ---------- */
.tscroll,.wp-block-table{overflow-x:auto}
.tscroll{border:1px solid var(--line);border-radius:6px;box-shadow:var(--sh);margin:20px 0}
table{border-collapse:collapse;width:100%;min-width:760px;font-size:14px;background:var(--card)}
.tscroll table{min-width:760px}
.tscroll td,.tscroll th{white-space:nowrap}
th,td{text-align:left;padding:10px 13px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:700;font-size:12px;letter-spacing:.03em;text-transform:uppercase;color:var(--muted);background:var(--bg)}
tbody tr:last-child td{border-bottom:none}
.faq details,.wp-block-details{border:1px solid var(--line);border-radius:6px;margin:8px 0;background:var(--card);overflow:hidden}
.faq summary,.wp-block-details summary{padding:14px 16px;cursor:pointer;font-weight:700;font-size:.98rem;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker,.wp-block-details summary::-webkit-details-marker{display:none}
.faq summary::after,.wp-block-details summary::after{content:"+";color:var(--accent);font-weight:700;flex:none}
.faq details[open] summary::after,.wp-block-details[open] summary::after{content:"–"}
.faq details[open] summary,.wp-block-details[open] summary{border-bottom:1px solid var(--line)}
.faq .a{padding:12px 16px 16px}

/* ---------- chữ ký / ngày đăng ---------- */
.sign{margin-top:26px;padding-top:14px;border-top:1px solid var(--line);font-family:"Big Shoulders Display",sans-serif;font-weight:800;text-transform:uppercase;color:var(--accent);font-size:1.1rem}
.datestamp{font-family:"JetBrains Mono",monospace;font-size:12px;color:var(--muted);margin-bottom:18px}

/* ---------- chia sẻ bài viết ---------- */
.share-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0 0 24px}
.share-lbl{font-family:"JetBrains Mono",monospace;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.share-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--card);
  display:flex;align-items:center;justify-content:center;color:var(--muted);
  text-decoration:none;cursor:pointer;padding:0;font:inherit;
  transition:transform .12s ease, background .12s ease, color .12s ease, border-color .12s ease}
.share-btn svg{display:block}
.share-btn:hover{transform:translateY(-2px);background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.share-btn.share-copy.copied{background:var(--ok);border-color:var(--ok);color:#fff}

/* căn đều 2 bên cho nội dung bài viết */
.prose p,.prose li{text-align:justify;text-justify:inter-word;-webkit-hyphens:auto;hyphens:auto}
@media(max-width:560px){.prose p,.prose li{text-align:left;hyphens:none}}
.prose img{border-radius:6px}
.prose figure{margin:28px 0}
.prose figure img{width:100%;height:auto;display:block;border-radius:8px}
.prose figcaption{margin-top:8px;font-family:"JetBrains Mono",monospace;font-size:.8rem;color:var(--muted);text-align:center}
.prose h2{border-top:1px solid var(--line);padding-top:1em}
.prose > h2:first-child{border-top:none;padding-top:0}

/* ---------- khối liên hệ (trang Về tôi) ---------- */
.contact-block{margin-top:48px;padding-top:32px;border-top:1px solid var(--line)}
.contact-grid{display:flex;gap:14px;flex-wrap:wrap;margin-top:16px}
.contact-item{
  display:flex;align-items:center;gap:10px;padding:14px 18px;border:1px solid var(--line);border-radius:6px;
  background:var(--card);color:var(--ink);text-decoration:none;font-weight:600;box-shadow:var(--sh);
}
.contact-item:hover{border-color:var(--accent);color:var(--accent)}
.contact-item svg{color:var(--accent);flex:none}

/* ---------- footer ---------- */
footer.site{background:var(--steel);color:var(--steel-ink);margin-top:40px}
footer.site .wordmark--compact{color:var(--steel-ink)}
footer.site a{color:#c7d0d6}
footer.site a:hover{color:var(--accent-2)}
footer.site .muted{color:#9daab2}
.fcols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;padding:44px 0 32px}
@media(max-width:760px){.fcols{grid-template-columns:1fr;gap:26px}}
.fcol h4{color:var(--steel-ink);font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;margin:0 0 12px}
.fmenu{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;font-size:.92rem}
.contact-line{margin:10px 0}
.soc{display:flex;gap:10px;margin-top:14px}
.soc a{width:34px;height:34px;border-radius:50%;border:1px solid #33424f;display:flex;align-items:center;justify-content:center;color:#c7d0d6}
.soc a:hover{border-color:var(--accent-2);color:var(--accent-2)}
.disc{border-top:1px solid #33424f}
.disc .wrap{padding:16px clamp(16px,4vw,32px);font-size:.82rem;color:#9daab2}

/* ---------- nút liên hệ nổi ---------- */
.thoepbun-fab{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.thoepbun-fab-toggle{
  width:54px;height:54px;border-radius:50%;background:var(--accent);color:var(--accent-ink);border:none;
  display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--sh);
}
.thoepbun-fab-close{display:none}
.thoepbun-fab.open .thoepbun-fab-ico{display:none}
.thoepbun-fab.open .thoepbun-fab-close{display:flex}
.thoepbun-fab-list{display:none;flex-direction:column;gap:8px}
.thoepbun-fab.open .thoepbun-fab-list{display:flex}
.thoepbun-fab-btn{
  width:44px;height:44px;border-radius:50%;background:var(--card);border:1px solid var(--line);color:var(--ink);
  display:flex;align-items:center;justify-content:center;text-decoration:none;box-shadow:var(--sh);
}
.thoepbun-fab-btn:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- pagination ---------- */
.pagination{display:flex;gap:8px;margin-top:28px;flex-wrap:wrap}
.pagination .page-numbers{
  display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 10px;
  border:1px solid var(--line);border-radius:4px;color:var(--ink);text-decoration:none;font-family:"JetBrains Mono",monospace;font-size:.86rem;
}
.pagination .page-numbers.current{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.pagination .page-numbers:hover{border-color:var(--accent);color:var(--accent)}