/* ===== MaiGiao — Hành trình người thợ cơ khí ===== */
:root{
  --bg:#ffffff;
  --bg-alt:#f3f5f8;
  --dark:#161b22;
  --dark-2:#1f2733;
  --text:#1c222c;
  --text-light:#5b6472;
  --accent:#ff7a30;
  --accent-dark:#e0611a;
  --border:#e4e7eb;
  --radius:10px;
  --shadow:0 6px 24px rgba(22,27,34,.08);
  --maxw:1180px;
  font-size:16px;
}

*{box-sizing:border-box;margin:0;padding:0;}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.mono{font-family:'JetBrains Mono',ui-monospace,Consolas,monospace;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 26px;border-radius:999px;
  font-weight:600;font-size:.95rem;
  border:2px solid transparent;cursor:pointer;
  transition:transform .15s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);}
.btn-outline{border-color:rgba(255,255,255,.35);color:#fff;}
.btn-outline:hover{background:rgba(255,255,255,.1);}
.btn-outline-dark{border-color:var(--border);color:var(--text);}
.btn-outline-dark:hover{border-color:var(--accent);color:var(--accent);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(22,27,34,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:74px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.4rem;color:#fff;letter-spacing:.2px;}
.logo .dot{color:var(--accent);}
.nav-links{display:flex;gap:32px;}
.nav-links a{color:#cfd4dc;font-weight:500;font-size:.95rem;padding:6px 0;border-bottom:2px solid transparent;transition:.2s;}
.nav-links a:hover,.nav-links a.active{color:#fff;border-color:var(--accent);}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:1.6rem;cursor:pointer;}

@media(max-width:860px){
  .nav-toggle{display:block;}
  .nav-links{
    position:absolute;top:74px;left:0;right:0;
    background:var(--dark);flex-direction:column;gap:0;
    max-height:0;overflow:hidden;transition:max-height .25s ease;
    border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-links.open{max-height:400px;}
  .nav-links a{padding:16px 24px;border-bottom:1px solid rgba(255,255,255,.06);width:100%;}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(22,27,34,.94),rgba(22,27,34,.97)),
    repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 40px),
    var(--dark);
  color:#fff;padding:96px 0 80px;
}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--accent);font-weight:700;font-size:.8rem;
  text-transform:uppercase;letter-spacing:1.5px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);}
.hero h1{font-size:clamp(2.2rem,4.5vw,3.4rem);font-weight:800;line-height:1.15;margin-bottom:20px;}
.hero h1 span{color:var(--accent);}
.hero p.lead{color:#b8bfc9;font-size:1.1rem;max-width:520px;margin-bottom:32px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px;}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap;}
.hero-stats .stat b{display:block;font-size:2rem;font-weight:800;color:#fff;}
.hero-stats .stat span{color:#9aa2ad;font-size:.85rem;}

.hero-art{
  position:relative;aspect-ratio:1/1;border-radius:16px;
  background:linear-gradient(145deg,var(--dark-2),#0f1319);
  border:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:center;
}
.hero-art svg{width:62%;height:62%;color:var(--accent);opacity:.9;}
.hero-art::after{
  content:"ẢNH CHÂN DUNG / SẢN PHẨM THẬT SẼ THAY VÀO ĐÂY";
  position:absolute;bottom:14px;left:14px;right:14px;
  font-size:.68rem;letter-spacing:.5px;color:#6b7280;text-align:center;
}

/* ---------- Section shell ---------- */
section{padding:88px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:640px;margin:0 auto 48px;text-align:center;}
.section-head .eyebrow{justify-content:center;}
.section-head .eyebrow::before{display:none;}
.section-head h2{font-size:clamp(1.7rem,3vw,2.3rem);font-weight:800;margin-bottom:12px;}
.section-head p{color:var(--text-light);}

/* ---------- Journey timeline ---------- */
.timeline{position:relative;max-width:760px;margin:0 auto;}
.timeline::before{content:"";position:absolute;left:19px;top:6px;bottom:6px;width:2px;background:var(--border);}
.tl-item{position:relative;padding-left:56px;margin-bottom:40px;}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;background:var(--dark);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.85rem;border:3px solid var(--bg-alt);}
.tl-item .tl-year{color:var(--accent);font-weight:700;font-size:.85rem;letter-spacing:.5px;text-transform:uppercase;}
.tl-item h3{margin:4px 0 8px;font-size:1.15rem;}
.tl-item p{color:var(--text-light);}

/* ---------- Skills ---------- */
.skill-groups{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:28px;}
.skill-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;}
.skill-card h3{display:flex;align-items:center;gap:10px;font-size:1.05rem;margin-bottom:20px;}
.skill-card h3 .ic{width:34px;height:34px;border-radius:8px;background:rgba(255,122,48,.12);color:var(--accent);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.skill-row{margin-bottom:16px;}
.skill-row:last-child{margin-bottom:0;}
.skill-row .lbl{display:flex;justify-content:space-between;font-size:.88rem;margin-bottom:6px;color:var(--text-light);}
.skill-bar{height:8px;background:var(--bg-alt);border-radius:99px;overflow:hidden;}
.skill-bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-dark));border-radius:99px;}

.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px;}
.tag{background:var(--bg-alt);border:1px solid var(--border);color:var(--text);padding:8px 16px;border-radius:999px;font-size:.85rem;font-weight:500;}

/* ---------- Category / Product cards ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;}
.cat-card{
  background:var(--dark);color:#fff;border-radius:var(--radius);
  padding:32px;position:relative;overflow:hidden;min-height:180px;
  display:flex;flex-direction:column;justify-content:flex-end;
  transition:transform .2s ease;
}
.cat-card:hover{transform:translateY(-4px);}
.cat-card .ic{width:46px;height:46px;color:var(--accent);margin-bottom:16px;}
.cat-card h3{font-size:1.2rem;margin-bottom:6px;}
.cat-card p{color:#aeb4bd;font-size:.88rem;}

.product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px;}
.product-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:box-shadow .2s ease,transform .2s ease;
}
.product-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);}
.product-thumb{
  aspect-ratio:4/3;background:var(--bg-alt);display:flex;align-items:center;justify-content:center;
  border-bottom:1px solid var(--border);
}
.product-thumb svg{width:44%;height:44%;color:var(--text-light);}
.product-body{padding:18px 20px;}
.product-badge{display:inline-block;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--accent-dark);background:rgba(255,122,48,.12);padding:4px 10px;border-radius:6px;margin-bottom:10px;}
.product-body h4{font-size:1.02rem;margin-bottom:4px;}
.product-body p{color:var(--text-light);font-size:.85rem;}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;}
.contact-info .item{display:flex;gap:16px;margin-bottom:26px;}
.contact-info .item .ic{width:44px;height:44px;border-radius:10px;background:rgba(255,122,48,.12);color:var(--accent);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.contact-info .item h4{font-size:.95rem;margin-bottom:4px;}
.contact-info .item p,.contact-info .item a{color:var(--text-light);font-size:.92rem;}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-grid .full{grid-column:1/-1;}
label{display:block;font-size:.85rem;font-weight:600;margin-bottom:6px;}
input,textarea{
  width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:8px;
  font-family:inherit;font-size:.95rem;background:#fff;
}
input:focus,textarea:focus{outline:none;border-color:var(--accent);}
textarea{resize:vertical;min-height:120px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:#b8bfc9;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:40px;}
.footer-grid h4{color:#fff;font-size:1rem;margin-bottom:18px;}
.footer-grid p{font-size:.9rem;color:#9aa2ad;}
.footer-grid ul li{margin-bottom:10px;}
.footer-grid ul li a:hover{color:var(--accent);}
.footer-social{display:flex;gap:12px;margin-top:16px;}
.footer-social a{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;transition:.2s;}
.footer-social a:hover{background:var(--accent);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;text-align:center;font-size:.82rem;color:#7d8590;}

/* ---------- Floating buttons ---------- */
.float-actions{position:fixed;right:20px;bottom:20px;display:flex;flex-direction:column;gap:12px;z-index:90;}
.float-actions a{width:52px;height:52px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(255,122,48,.4);}
.float-actions a svg{width:24px;height:24px;}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;}
  .hero-art{max-width:360px;margin:0 auto;}
  .contact-grid{grid-template-columns:1fr;}
}
@media(max-width:600px){
  section{padding:64px 0;}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
}