/* =========================================================
   Wenet Web Design Agency — en.wenet.website
   Independent English stylesheet. No dependency on the
   Persian theme (vn/style.css). Self-contained.
   ========================================================= */

/* ---------- Design tokens ---------- */
:root{
  /* Brand — purple values match the real Wenet mark; green added as a
     growth/success accent per brief (purple + green). */
  --ink:        #16141f;
  --body-text:  #4c4a5c;
  --muted:      #7b7891;
  --purple:     #4b4685;
  --violet:     #5d53c7;
  --green:      #1f9d57;
  --green-dark: #167a43;
  --paper:      #ffffff;
  --mist:       #f7f7fb;
  --mist-2:     #f0eefb;
  --line:       #e6e4f2;
  --line-dark:  #d8d5ea;

  --font-display: 'Plus Jakarta Sans', -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-body:    'Inter', -apple-system, 'Segoe UI', Roboto, sans-serif;

  --radius-s: 10px;
  --radius-m: 16px;
  --radius-l: 24px;

  --container: 1180px;
  --gap: clamp(1rem, 2vw, 1.75rem);
}

/* ---------- Reset ---------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ -webkit-text-size-adjust: 100%; }
body{ margin: 0; }
img, svg{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ margin: 0; padding: 0; list-style: none; }
button{ font: inherit; }
h1,h2,h3,p,dl,dd{ margin: 0; }

@media (prefers-reduced-motion: no-preference){
  html{ scroll-behavior: smooth; }
}
@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

:focus-visible{
  outline: 2px solid var(--violet);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Base typography ---------- */
body{
  font-family: var(--font-body);
  color: var(--body-text);
  background: var(--paper);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3{
  font-family: var(--font-display);
  color: var(--ink);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.container{
  width: 92%;
  max-width: var(--container);
  margin: 0 auto;
}
.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: .5em;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--violet);
  margin: 0 0 1rem;
}
.eyebrow::before{
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  display: inline-block;
}
.section-lead{
  font-size: 18px;
  color: var(--muted);
  max-width: 640px;
  margin: .75rem 0 2.5rem;
}
section{ padding: clamp(3rem, 6vw, 5.5rem) 0; }
.section-alt{ background: var(--mist); }

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: .5em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 16px;
  padding: .85em 1.6em;
  border-radius: 999px;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}
.btn-primary{ background: var(--purple); color: #fff; }
.btn-primary:hover{ background: #3d3970; }
.btn-outline{ background: transparent; color: var(--ink); border: 1.5px solid var(--line-dark); }
.btn-outline:hover{ border-color: var(--purple); color: var(--purple); }
.btn-white{ background: #fff; color: var(--purple); }
.btn-white:hover{ background: var(--mist-2); }
.btn-green{ background: var(--green); color: #fff; }
.btn-green:hover{ background: var(--green-dark); }

/* ---------- Header / Nav ---------- */
.site-header{
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav{
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem 0;
}
.nav-logo{ display: flex; align-items: center; gap: .6rem; font-family: var(--font-display); font-weight: 700; color: var(--ink); font-size: 18px; }
.nav-logo img{ width: 34px; height: auto; }
.nav-links{ display: flex; align-items: center; gap: 2rem; }
.nav-links a:not(.btn){ font-size: 15px; font-weight: 500; color: var(--body-text); }
.nav-links a:not(.btn):hover{ color: var(--purple); }
.nav-lang{ font-size: 13px; font-weight: 600; color: var(--muted); border: 1px solid var(--line-dark); border-radius: 999px; padding: .3em .8em; }
.nav-toggle{
  display: none; background: none; border: none; cursor: pointer;
  width: 40px; height: 40px; border-radius: 8px;
  align-items: center; justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content: ""; display: block; width: 20px; height: 2px; background: var(--ink);
  position: relative; transition: transform .18s ease, opacity .18s ease;
}
.nav-toggle span::before{ position: absolute; top: -6px; }
.nav-toggle span::after{ position: absolute; top: 6px; }

/* ---------- Hero ---------- */
.hero{ padding: clamp(3.5rem, 8vw, 6rem) 0 clamp(2.5rem, 6vw, 4rem); }
.hero-grid{ display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero h1{ font-size: clamp(2rem, 4vw, 2.85rem); max-width: 16ch; margin: 0 0 1.1rem; }
.hero-sub{ font-size: 19px; color: var(--body-text); max-width: 52ch; margin: 0 0 2rem; }
.hero-actions{ display: flex; flex-wrap: wrap; gap: .9rem; }

/* SERP mockup — decorative, illustrates "found in search, including AI search" */
.serp-mock{
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 1.4rem;
  box-shadow: 0 20px 60px -30px rgba(75,70,133,.35);
}
.serp-bar{
  display: flex; align-items: center; gap: .5rem;
  background: var(--mist); border-radius: 999px;
  padding: .55rem 1rem; font-size: 13px; color: var(--muted); margin-bottom: 1.1rem;
}
.serp-bar .dot{ width: 8px; height: 8px; border-radius: 50%; background: var(--line-dark); }
.serp-result{ padding: .85rem 0; border-bottom: 1px solid var(--line); }
.serp-result:last-child{ border-bottom: none; }
.serp-result .url{ font-size: 12px; color: var(--green-dark); font-weight: 600; }
.serp-result .title{ font-family: var(--font-display); font-size: 16px; font-weight: 700; color: var(--violet); margin: .2rem 0; }
.serp-result .snippet{ font-size: 13px; color: var(--muted); }
.serp-result.is-top{ background: var(--mist-2); margin: 0 -1.4rem; padding: .85rem 1.4rem; border-radius: 12px; border-bottom: none; }
.serp-chip{
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .03em;
  color: var(--green-dark); background: #e7f7ee; padding: .2em .6em; border-radius: 999px; margin-bottom: .3rem;
}

/* ---------- Story ---------- */
.story-grid{ display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.story-grid p{ font-size: 17px; margin: 0 0 1.2rem; }
.story-grid p:last-child{ margin-bottom: 0; }
.story-fact-list{ display: flex; flex-direction: column; gap: 1rem; }
.story-fact{
  display: flex; gap: 1rem; align-items: flex-start;
  background: var(--mist); border-radius: var(--radius-m); padding: 1.1rem 1.3rem;
}
.story-fact .mark{ color: var(--green); font-weight: 800; font-family: var(--font-display); }
.story-fact p{ font-size: 15px; margin: 0; color: var(--body-text); }

/* ---------- Entity graph ---------- */
.entity-copy{ max-width: 720px; margin: 0 0 2.5rem; font-size: 17px; }
.entity-copy a{ color: var(--violet); font-weight: 600; border-bottom: 1px solid var(--line-dark); }
.entity-copy a:hover{ border-color: var(--violet); }
.entity-graph{ width: 100%; height: auto; }
.entity-graph text{ font-family: var(--font-body); }

/* ---------- Services ---------- */
.services-grid{ display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.service-group{
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-m);
  padding: 1.8rem 1.7rem;
}
.service-group h3{ font-size: 19px; margin: 0 0 1rem; }
.service-group ul{ display: flex; flex-direction: column; gap: .65rem; }
.service-group li{
  font-size: 15.5px; color: var(--body-text); padding-left: 1.1rem; position: relative;
}
.service-group li::before{
  content: ""; position: absolute; left: 0; top: .6em;
  width: 6px; height: 6px; border-radius: 50%; background: var(--green);
}

/* ---------- Portfolio / case studies ---------- */
.portfolio-grid{ display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.case-card{
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-m);
  overflow: hidden; display: flex; flex-direction: column;
}
.case-thumb{ aspect-ratio: 4/3; overflow: hidden; background: var(--mist); }
.case-thumb img{ width: 100%; height: 100%; object-fit: cover; }
.case-body{ padding: 1.3rem 1.4rem 1.5rem; display: flex; flex-direction: column; gap: .55rem; flex: 1; }
.case-industry{ font-size: 12px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--green-dark); }
.case-body h3{ font-size: 18px; margin: 0; }
.case-body h3 a{ color: var(--ink); }
.case-body h3 a:hover{ color: var(--purple); }
.case-service{ font-size: 13px; color: var(--muted); font-weight: 500; }
.case-value{ font-size: 14.5px; color: var(--body-text); margin-top: .2rem; }

/* ---------- Trust stats ---------- */
.trust-grid{ display: flex; flex-wrap: wrap; gap: var(--gap); }
.trust-item{
  flex: 1 1 180px; background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-m); padding: 1.4rem 1.3rem; text-align: left;
}
.trust-item dt{ font-family: var(--font-display); font-size: 26px; font-weight: 800; color: var(--purple); }
.trust-item dd{ font-size: 14px; color: var(--muted); margin-top: .3rem; }

/* ---------- AI Search section ---------- */
.ai-grid{ display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.ai-copy p{ font-size: 17px; margin: 0 0 1.2rem; }
.ai-list{ display: flex; flex-direction: column; gap: 1rem; }
.ai-list li{
  background: var(--mist); border-radius: var(--radius-m); padding: 1.1rem 1.3rem;
  font-size: 15px; color: var(--body-text); position: relative; padding-left: 2.6rem;
}
.ai-list li::before{
  content: ""; position: absolute; left: 1.2rem; top: 1.25rem;
  width: 10px; height: 10px; border-radius: 3px; background: var(--violet);
}

/* ---------- Final CTA ---------- */
.final-cta{
  background: linear-gradient(135deg, var(--purple), var(--violet));
  border-radius: var(--radius-l);
  padding: clamp(2.5rem, 6vw, 4rem);
  text-align: center;
}
.final-cta h2{ color: #fff; font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 .8rem; }
.final-cta p{ color: #e7e4fb; font-size: 17px; max-width: 46ch; margin: 0 auto 1.8rem; }

/* ---------- Footer ---------- */
.site-footer{ background: var(--mist); border-top: 1px solid var(--line); padding: 3.5rem 0 0; }
.footer-grid{ display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; padding-bottom: 2.5rem; }
.footer-brand img{ width: 100px; margin-bottom: .9rem; }
.footer-brand p{ font-size: 14px; color: var(--muted); max-width: 32ch; }
.footer-col h3{ font-size: 14px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin: 0 0 .9rem; }
.footer-col ul{ display: flex; flex-direction: column; gap: .6rem; }
.footer-col a{ font-size: 14.5px; color: var(--body-text); }
.footer-col a:hover{ color: var(--purple); }
.footer-bottom{
  border-top: 1px solid var(--line); padding: 1.3rem 0; text-align: center;
  font-size: 13px; color: var(--muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 960px){
  .hero-grid, .story-grid, .ai-grid{ grid-template-columns: 1fr; }
  .services-grid, .portfolio-grid{ grid-template-columns: repeat(2, 1fr); }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px){
  .nav-links{
    position: fixed; inset: 64px 0 0 0; background: #fff;
    flex-direction: column; align-items: flex-start; padding: 1.5rem 6%;
    gap: 1.4rem; border-top: 1px solid var(--line);
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity .18s ease, transform .18s ease;
  }
  .nav-links.is-open{ opacity: 1; transform: translateY(0); pointer-events: auto; }
  .nav-toggle{ display: flex; }
  .services-grid, .portfolio-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px){
  .footer-grid{ grid-template-columns: 1fr; }
}