/* =========================================================
   KOVENSO — Logistics & Warehouse Tech
   Design language: warehouse floor / rack-bay grid / safety colors
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@500;600&display=swap');

:root{
  --bg:        #F2F5FA;   /* brand light gray-blue */
  --bg-alt:    #E6ECF7;   /* darker light band */
  --panel:     #FFFFFF;   /* card surface */
  --ink:       #071B36;   /* brand navy */
  --ink-soft:  #4B5C75;
  --line:      #D7E0EE;
  --accent:    #FF8A00;   /* brand orange */
  --accent-ink:#7A3D00;
  --accent-2:  #1E63FF;   /* brand blue */
  --accent-2-dark: #0D3B8B; /* brand deep blue */
  --success:   #1E9E6B;
  --white:     #FFFFFF;

  --font-display: 'Inter', sans-serif;
  --font-head:    'Inter', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --maxw: 1180px;
  --radius: 4px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin:0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }
a{ color: inherit; }

.wrap{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- focus ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible{
  outline: 3px solid var(--accent-2);
  outline-offset: 2px;
}

/* ---------- header ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(228,229,226,0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap{
  display:flex;
  align-items:center;
  justify-content: space-between;
  height: 76px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  text-decoration:none;
  color: var(--ink);
}
.brand img{ height: 30px; width:auto; }

.nav{
  display:flex;
  align-items:center;
  gap: 34px;
}
.nav a{
  font-family: var(--font-head);
  font-weight: 700;
  font-weight:600;
  font-size: 0.95rem;
  text-decoration:none;
  color: var(--ink-soft);
  position:relative;
  padding: 6px 0;
}
.nav a[aria-current="page"],
.nav a:hover{ color: var(--ink); }
.nav a[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-2px;
  height:3px;
  background: var(--accent);
}

.nav-cta{
  background: var(--primary);
  color: var(--white) !important;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 0.9rem !important;
}
.nav-cta:hover{ background: #000; }

.nav-toggle{
  display:none;
  background:none;
  border:2px solid var(--ink);
  border-radius: var(--radius);
  width:44px; height:40px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:20px; height:2px;
  background: var(--ink);
  margin: 4px auto;
}

/* ---------- eyebrow / labels (bin-code style) ---------- */
.bin-code{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family: var(--font-mono);
  font-weight:600;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--accent-ink);
  background: rgba(245,166,35,0.18);
  border: 1px solid rgba(245,166,35,0.5);
  padding: 5px 10px;
  border-radius: var(--radius);
}

/* ---------- hero ---------- */
.hero{
  padding: 88px 0 60px;
  position:relative;
  overflow:hidden;
}
.hero .wrap{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items:center;
}
.hero h1{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.3rem, 4.2vw, 3.6rem);
  line-height: 1.05;
  margin: 18px 0 20px;
}
.hero h1 em{
  font-style:normal;
  color: var(--accent-ink);
  background: linear-gradient(180deg, transparent 62%, var(--accent) 62%);
}
.hero p.lead{
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 46ch;
  margin-bottom: 30px;
}
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }

.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-weight:700;
  font-size: 0.95rem;
  padding: 14px 24px;
  border-radius: var(--radius);
  text-decoration:none;
  border: 2px solid transparent;
  cursor:pointer;
}
.btn-primary{ background: var(--ink); color: var(--white); }
.btn-primary:hover{ background:#000; }
.btn-secondary{ background: transparent; border-color: var(--ink); color: var(--ink); }
.btn-secondary:hover{ background: var(--ink); color: var(--white); }

/* ---------- route line (signature element) ---------- */
.route{
  margin: 30px 0 8px;
}
.route svg{ width:100%; height:auto; overflow:visible; }
.route-path{
  fill:none;
  stroke: var(--ink);
  stroke-width: 2;
  stroke-dasharray: 4 6;
  opacity:0.35;
}
.route-path-fill{
  fill:none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
  transition: stroke-dashoffset 1.4s cubic-bezier(.2,.7,.2,1);
}
.route.is-visible .route-path-fill{ stroke-dashoffset: 0; }
.route-node{
  fill: var(--bg);
  stroke: var(--ink);
  stroke-width: 2;
}
.route-node.is-active{ fill: var(--accent); }
.route-label{
  font-family: var(--font-mono);
  font-size: 12px;
  fill: var(--ink);
}

/* ---------- warehouse panel (hero visual) ---------- */
.rack-panel{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 22px;
}
.rack-panel .rack-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.rack-panel .rack-row:last-child{ border-bottom:none; }
.rack-tag{
  background: var(--ink);
  color: var(--white);
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 0.75rem;
}
.rack-status{ color: var(--success); font-weight:600; }

/* ---------- section shell ---------- */
section{ padding: 74px 0; }
.section-alt{ background: var(--bg-alt); }
.section-head{
  max-width: 640px;
  margin: 0 0 46px;
}
.section-head h2{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  margin: 14px 0 12px;
}
.section-head p{ color: var(--ink-soft); font-size: 1.05rem; }

/* ---------- zone grid (features) ---------- */
.zone-group{ margin-bottom: 46px; }
.zone-group:last-child{ margin-bottom:0; }
.zone-group-title{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin: 0 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.zones{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 22px;
}
.zone{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 30px;
  position:relative;
}
.zone::before{
  content: attr(data-zone);
  position:absolute;
  top:22px; right:24px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  letter-spacing: 0.05em;
}
.zone h3{
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.25rem;
  margin: 6px 0 10px;
  padding-right: 60px;
}
.zone p{ color: var(--ink-soft); margin:0; }
.zone-mark{
  width: 40px; height:40px;
  border-radius: 4px;
  background: var(--accent);
  margin-bottom: 16px;
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-mono);
  font-weight:700;
  color: var(--accent-ink);
}
.zone.is-addon{
  border:none;
  background: var(--panel);
}
.zone.is-addon .zone-mark{ background: var(--accent-2); color:#fff; }
.zone-addon-note{
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

/* ---------- stats strip ---------- */
.stats{
  display:grid;
  grid-template-columns: repeat(4,1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.stat{
  padding: 30px 24px;
  border-left: 1px solid var(--line);
  text-align:left;
}
.stat:first-child{ border-left:none; }
.stat .num{
  font-family: var(--font-mono);
  font-size: 2.1rem;
  font-weight:700;
  color: var(--ink);
}
.stat .lbl{ color: var(--ink-soft); font-size: 0.9rem; margin-top:6px; }

/* ---------- CTA band ---------- */
.cta-band{
  background: var(--ink);
  color: var(--white);
  border-radius: 6px;
  padding: 54px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 30px;
  flex-wrap:wrap;
}
.cta-band h2{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.9rem;
  margin:0 0 8px;
}
.cta-band p{ color: #C9CDD6; margin:0; }
.cta-band .btn-primary{ background: var(--accent); color: var(--accent-ink); }
.cta-band .btn-primary:hover{ background:#ffb43c; }

/* ---------- page hero (inner pages) ---------- */
.page-hero{ padding: 60px 0 30px; }
.page-hero h1{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 3.6vw, 2.9rem);
  margin: 16px 0 14px;
}
.page-hero p{ color: var(--ink-soft); font-size: 1.05rem; max-width: 60ch; }

/* ---------- about page ---------- */
.timeline{
  display:flex;
  flex-direction:column;
  gap:0;
  border-left: 2px solid var(--line);
  margin-left: 10px;
}
.timeline-item{
  position:relative;
  padding: 0 0 40px 32px;
}
.timeline-item:last-child{ padding-bottom:0; }
.timeline-item::before{
  content:"";
  position:absolute;
  left:-7px; top:2px;
  width:12px; height:12px;
  border-radius:50%;
  background: var(--accent);
  border: 2px solid var(--ink);
}
.timeline-item .tcode{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
}
.timeline-item h3{ margin: 4px 0 8px; font-family: var(--font-head); font-weight:700; }
.timeline-item p{ color: var(--ink-soft); margin:0; }

.values{
  display:grid;
  grid-template-columns: repeat(3,1fr);
  gap: 22px;
}
.value-card{
  padding: 26px;
  background: var(--panel);
  border:1px solid var(--line);
  border-radius:6px;
}
.value-card h3{ font-family: var(--font-head); font-weight:700; font-size:1.1rem; margin:0 0 8px; }
.value-card p{ color: var(--ink-soft); margin:0; font-size:0.95rem; }

/* ---------- service page ---------- */
.service-block{
  display:grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 46px;
  align-items:center;
  padding: 50px 0;
  border-bottom: 1px solid var(--line);
}
.service-block:last-child{ border-bottom:none; }
.service-block.reverse .service-visual{ order:2; }
.service-visual{
  background: var(--panel);
  border:1px solid var(--line);
  border-radius:6px;
  padding: 24px;
}
.service-block h3{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  margin: 0 0 12px;
}
.service-block .bin-code{ margin-bottom: 14px; }
.service-block p{ color: var(--ink-soft); margin-bottom: 18px; }
.service-block ul{
  list-style:none;
  padding:0; margin:0 0 18px;
  display:flex; flex-direction:column; gap:10px;
}
.service-block ul li{
  padding-left: 22px;
  position:relative;
  font-size: 0.95rem;
}
.service-block ul li::before{
  content:"—";
  position:absolute; left:0;
  color: var(--accent-ink);
  font-weight:700;
}

/* ---------- pricing-ish plan strip ---------- */
.plans{
  display:grid;
  grid-template-columns: repeat(3,1fr);
  gap: 22px;
}
.plan{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 30px;
}
.plan.is-highlight{
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent) inset;
}
.plan .ptag{ font-family: var(--font-mono); font-size:0.8rem; color: var(--ink-soft); }
.plan h3{ font-family: var(--font-head); font-weight:700; font-size: 1.3rem; margin: 6px 0 14px; }
.plan p{ color: var(--ink-soft); font-size:0.92rem; }

/* ---------- contact page ---------- */
.contact-grid{
  display:grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 50px;
}
.contact-info .info-row{
  display:flex;
  gap:14px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--line);
}
.contact-info .info-row:first-child{ padding-top:0; }
.info-tag{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  min-width: 74px;
}
.contact-info .info-row strong{ display:block; margin-bottom:2px; }
.contact-info .info-row span{ color: var(--ink-soft); font-size:0.92rem; }

form.contact-form{
  background: var(--panel);
  border:1px solid var(--line);
  border-radius:6px;
  padding: 34px;
}
.form-row{ margin-bottom: 20px; }
.form-row label{
  display:block;
  font-family: var(--font-head);
  font-weight: 700;
  font-weight:600;
  font-size: 0.9rem;
  margin-bottom: 8px;
}
.form-row input,
.form-row select,
.form-row textarea{
  width:100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: var(--white);
  color: var(--ink);
}
.form-row textarea{ resize: vertical; min-height: 110px; }
.form-two{ display:grid; grid-template-columns: 1fr 1fr; gap:18px; }
.form-note{
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 14px;
}
.form-status{
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  padding: 12px 14px;
  border-radius: var(--radius);
  display:none;
}
.form-status.show{ display:block; }
.form-status.ok{ background: rgba(46,125,91,0.14); color: var(--success); border:1px solid rgba(46,125,91,0.4); }
.form-status.error{ background: rgba(220,53,69,0.12); color: #B42318; border:1px solid rgba(220,53,69,0.4); }

/* ---------- footer ---------- */
footer.site-footer{
  background: var(--ink);
  color: #B9BEC9;
  padding: 50px 0 26px;
  margin-top: 40px;
}
.footer-top{
  display:flex;
  justify-content:space-between;
  gap: 40px;
  flex-wrap:wrap;
  padding-bottom: 30px;
  border-bottom: 1px solid #2A3242;
}
.footer-brand{
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--white);
  font-size: 1.1rem;
}
.footer-links{ display:flex; gap: 46px; flex-wrap:wrap; }
.footer-links h4{
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--white);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  margin: 0 0 12px;
}
.footer-links ul{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:8px; }
.footer-links a{ text-decoration:none; color:#B9BEC9; font-size:0.9rem; }
.footer-links a:hover{ color: var(--white); }
.footer-bottom{
  display:flex;
  justify-content:space-between;
  padding-top: 22px;
  font-size: 0.82rem;
  flex-wrap:wrap;
  gap:10px;
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .route-path-fill{ transition:none; stroke-dashoffset:0; }
}

/* ---------- floating contact buttons ---------- */
.float-contact{
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.float-btn{
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px 12px 12px;
  border-radius: 999px;
  text-decoration: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.88rem;
  box-shadow: 0 6px 18px rgba(7,27,54,0.22);
  transition: transform 0.15s ease;
}
.float-btn:hover{ transform: translateY(-2px); }
.float-btn .icon{
  width: 34px; height: 34px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.float-btn.zalo{ background: #FFFFFF; color: var(--ink); border: 1px solid var(--line); }
.float-btn.zalo .icon{ background: #0068FF; color: #fff; }
.float-btn.hotline{ background: var(--accent-2); color: #fff; }
.float-btn.hotline .icon{ background: rgba(255,255,255,0.22); color:#fff; }

@media (max-width: 600px){
  .float-contact{ right: 12px; bottom: 12px; }
  .float-btn{ padding: 10px 14px 10px 10px; font-size: 0.82rem; }
}

/* ---------- responsive ---------- */
@media (max-width: 900px){
  .nav{
    position:absolute;
    top:76px; left:0; right:0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction:column;
    align-items:flex-start;
    padding: 18px 28px 26px;
    gap: 18px;
    display:none;
  }
  .nav.is-open{ display:flex; }
  .nav-toggle{ display:block; }
  .hero .wrap{ grid-template-columns: 1fr; }
  .zones{ grid-template-columns: 1fr; }
  .stats{ grid-template-columns: repeat(2,1fr); }
  .stat:nth-child(3){ border-left:none; }
  .values{ grid-template-columns: 1fr; }
  .service-block,
  .service-block.reverse{ grid-template-columns: 1fr; }
  .service-block.reverse .service-visual{ order:0; }
  .plans{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .form-two{ grid-template-columns: 1fr; }
  .cta-band{ flex-direction:column; align-items:flex-start; }
}