/* ==========================================================
   KLINK TECH LTD — STYLESHEET
   Type: Space Grotesk (display) / Inter (body) / JetBrains Mono (data)
   ========================================================== */

:root{
  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'JetBrains Mono', monospace;

  --accent:#0072FF;
  --accent-2:#00C6FF;
  --shield:#121824;
  --charcoal:#1E2638;

  --radius-s:6px;
  --radius-m:10px;
  --container:1180px;
  --nav-h:76px;

  --ease:cubic-bezier(.4,0,.2,1);
}

/* ---------- DARK THEME (default) ---------- */
:root,
[data-theme="dark"]{
  --bg:#121824;
  --bg-soft:#161d2c;
  --card:#1E2638;
  --card-border:rgba(255,255,255,.08);
  --text:#F8FAFC;
  --text-muted:rgba(248,250,252,.68);
  --text-faint:rgba(248,250,252,.45);
  --nav-bg:rgba(18,24,36,.78);
  --shadow:0 20px 60px -25px rgba(0,0,0,.6);
  --input-bg:#161d2c;
}

/* ---------- LIGHT THEME ---------- */
[data-theme="light"]{
  --bg:#F8FAFC;
  --bg-soft:#EEF2F7;
  --card:#FFFFFF;
  --card-border:rgba(18,24,36,.08);
  --text:#121824;
  --text-muted:rgba(18,24,36,.66);
  --text-faint:rgba(18,24,36,.42);
  --nav-bg:rgba(248,250,252,.82);
  --shadow:0 20px 50px -28px rgba(18,24,36,.22);
  --input-bg:#FFFFFF;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important;}
}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  transition:background .35s var(--ease), color .35s var(--ease);
  overflow-x:hidden;
}

h1,h2,h3{
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.15;
  margin:0 0 .5em;
  letter-spacing:-.01em;
}

p{margin:0 0 1em;}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
button{font-family:inherit; cursor:pointer;}

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

.section-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

.section-head{
  max-width:560px;
  margin:0 0 48px;
}
.section-head h2{font-size:clamp(1.7rem,3vw,2.3rem);}
.section-head p{color:var(--text-muted); margin:0; font-size:1.02rem;}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-s);
  font-weight:600;
  font-size:.95rem;
  border:1px solid transparent;
  transition:transform .18s var(--ease), background .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;
  box-shadow:0 10px 30px -12px rgba(0,114,255,.55);
}
.btn-primary:hover{transform:translateY(-2px); box-shadow:0 14px 34px -12px rgba(0,114,255,.7);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--card-border);
}
.btn-ghost:hover{border-color:var(--accent-2); color:var(--accent-2);}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar{
  position:fixed;
  top:0; left:0; right:0;
  z-index:100;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  background:var(--nav-bg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--card-border);
}
.nav-inner{
  max-width:var(--container);
  width:100%;
  margin:0 auto;
  padding:0 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{display:flex; align-items:center; gap:10px;}
.brand img{width:36px; height:36px; border-radius:8px; object-fit:cover;}
.brand-name{
  font-family:var(--font-display);
  font-weight:600;
  font-size:1.15rem;
  letter-spacing:-.01em;
}
.brand-name em{
  font-style:normal;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.nav-links{display:flex; align-items:center; gap:32px;}
.nav-links a{
  font-size:.94rem;
  font-weight:500;
  color:var(--text-muted);
  position:relative;
  padding:4px 0;
  transition:color .2s var(--ease);
}
.nav-links a:hover{color:var(--text);}
.nav-links a::after{
  content:'';
  position:absolute; left:0; right:100%; bottom:-2px;
  height:2px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  transition:right .25s var(--ease);
}
.nav-links a:hover::after{right:0;}

.nav-actions{display:flex; align-items:center; gap:14px;}

.lang-toggle{
  display:flex; align-items:center; gap:5px;
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:999px;
  padding:6px 12px;
  font-size:.8rem;
  font-family:var(--font-mono);
  font-weight:500;
  color:var(--text-muted);
}
.lang-option{padding:2px 3px; transition:color .2s;}
.lang-option.is-active{color:var(--accent-2); font-weight:700;}
.lang-sep{opacity:.4;}

.theme-toggle{
  width:38px; height:38px;
  border-radius:50%;
  border:1px solid var(--card-border);
  background:var(--card);
  display:flex; align-items:center; justify-content:center;
  color:var(--text);
  position:relative;
  transition:border-color .2s;
}
.theme-toggle:hover{border-color:var(--accent-2);}
.theme-toggle svg{width:18px; height:18px; position:absolute; transition:opacity .25s var(--ease), transform .35s var(--ease);}
.icon-sun{opacity:0; transform:rotate(-60deg) scale(.6);}
.icon-moon{opacity:1; transform:rotate(0) scale(1);}
[data-theme="light"] .icon-sun{opacity:1; transform:rotate(0) scale(1);}
[data-theme="light"] .icon-moon{opacity:0; transform:rotate(60deg) scale(.6);}

.btn-nav{padding:10px 20px; font-size:.88rem;}

.hamburger{
  display:none;
  width:38px; height:38px;
  border-radius:8px;
  border:1px solid var(--card-border);
  background:var(--card);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.hamburger span{
  width:18px; height:2px;
  background:var(--text);
  border-radius:2px;
  transition:transform .25s var(--ease), opacity .2s var(--ease);
}
.hamburger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.mobile-menu{
  position:fixed;
  top:var(--nav-h); left:0; right:0;
  background:var(--bg);
  border-bottom:1px solid var(--card-border);
  display:flex;
  flex-direction:column;
  padding:8px 32px 24px;
  gap:4px;
  transform:translateY(-8px);
  opacity:0;
  pointer-events:none;
  transition:opacity .22s var(--ease), transform .22s var(--ease);
  z-index:99;
}
.mobile-menu.is-open{opacity:1; transform:translateY(0); pointer-events:auto;}
.mobile-menu a{
  padding:14px 4px;
  font-weight:500;
  border-bottom:1px solid var(--card-border);
  color:var(--text);
}
.mobile-menu .btn{margin-top:14px; align-self:flex-start;}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  padding:calc(var(--nav-h) + 76px) 0 90px;
  position:relative;
}
.hero::before{
  content:'';
  position:absolute;
  inset:0;
  background:
    radial-gradient(680px 420px at 82% 8%, rgba(0,114,255,.16), transparent 70%),
    radial-gradient(500px 380px at 10% 90%, rgba(0,198,255,.08), transparent 70%);
  pointer-events:none;
  z-index:0;
}
.hero-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:40px;
  align-items:center;
  position:relative;
  z-index:1;
}
.hero-kicker{
  font-family:var(--font-mono);
  font-size:.8rem;
  letter-spacing:.02em;
  color:var(--accent-2);
  margin-bottom:18px;
}
.hero h1{
  font-size:clamp(2.2rem, 4.4vw, 3.4rem);
  max-width:620px;
}
.hero-sub{
  color:var(--text-muted);
  font-size:1.08rem;
  max-width:520px;
}
.hero-actions{
  display:flex;
  gap:14px;
  margin-top:8px;
  flex-wrap:wrap;
}

.hero-visual{display:flex; align-items:center; justify-content:center;}
.network-graphic{width:100%; max-width:440px; height:auto;}
.net-lines line{
  stroke-dasharray:6 5;
  animation:flow 6s linear infinite;
}
@keyframes flow{ to{ stroke-dashoffset:-220; } }
.node{ stroke:var(--accent-2); stroke-width:1.6; }
.node-pulse{
  animation:pulse 2.6s ease-in-out infinite;
  transform-origin:240px 120px;
}
@keyframes pulse{
  0%,100%{ r:7; opacity:1; }
  50%{ r:9.5; opacity:.75; }
}
.shield-outline path{ }

/* ============================================================
   ABOUT / STATS
   ============================================================ */
.about{padding:90px 0; background:var(--bg-soft);}
.about-grid{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:64px;
  align-items:start;
}
.about-copy h2{font-size:clamp(1.6rem,3vw,2.1rem); max-width:420px;}
.about-copy p{color:var(--text-muted); max-width:440px;}

.stats-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1px;
  background:var(--card-border);
  border:1px solid var(--card-border);
  border-radius:var(--radius-m);
  overflow:hidden;
}
.stat-card{
  background:var(--card);
  padding:28px 24px;
  display:flex;
  flex-direction:column;
}
.stat-num{
  font-family:var(--font-mono);
  font-size:2.2rem;
  font-weight:600;
  color:var(--accent-2);
  line-height:1;
}
.stat-plus{
  font-family:var(--font-mono);
  font-size:1.4rem;
  color:var(--accent-2);
}
.stat-label{
  margin-top:10px;
  font-size:.87rem;
  color:var(--text-muted);
}

/* ============================================================
   SERVICES
   ============================================================ */
.services{padding:100px 0;}
.services-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.service-card{
  background:var(--card);
  border:1px solid var(--card-border);
  border-left:3px solid var(--accent);
  border-radius:var(--radius-m);
  padding:30px 26px;
  transition:border-color .25s var(--ease), transform .25s var(--ease);
}
.service-card:hover{
  border-left-color:var(--accent-2);
  transform:translateY(-3px);
}
.service-icon{
  width:34px; height:34px;
  color:var(--accent-2);
  margin-bottom:18px;
}
.service-card h3{font-size:1.12rem; margin-bottom:.4em;}
.service-card p{color:var(--text-muted); font-size:.94rem; margin:0;}

/* ============================================================
   WORK / PROJECTS
   ============================================================ */
.work{padding:90px 0; background:var(--bg-soft);}
.work-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  grid-template-rows:repeat(2,220px);
  gap:18px;
}
.work-item{
  position:relative;
  margin:0;
  border-radius:var(--radius-m);
  overflow:hidden;
  border:1px solid var(--card-border);
  background:var(--charcoal);
}
.work-item--video{grid-row:span 2;}
.work-item img,
.work-item video{
  width:100%; height:100%;
  object-fit:cover;
  display:block;
}
.work-item .media-placeholder{
  display:none;
  position:absolute; inset:0;
  align-items:center; justify-content:center;
  background:linear-gradient(135deg, rgba(0,114,255,.18), rgba(0,198,255,.1));
  color:var(--accent-2);
}
.work-item .media-placeholder svg{width:44px; height:44px;}
.work-item.media-fallback img,
.work-item.media-fallback video{display:none;}
.work-item.media-fallback .media-placeholder{display:flex;}
.work-item figcaption{
  position:absolute;
  left:0; right:0; bottom:0;
  padding:16px;
  font-size:.88rem;
  font-weight:500;
  color:#fff;
  background:linear-gradient(0deg, rgba(0,0,0,.72), transparent);
}

/* ============================================================
   TEAM
   ============================================================ */
.team{padding:100px 0;}
.team-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.team-card{
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--radius-m);
  padding:30px;
}
.team-photo{
  width:84px; height:84px;
  border-radius:50%;
  overflow:hidden;
  margin-bottom:18px;
  border:2px solid var(--accent-2);
}
.team-photo img{width:100%; height:100%; object-fit:cover;}
.team-card h3{font-size:1.08rem; margin-bottom:.2em;}
.team-role{
  font-family:var(--font-mono);
  font-size:.78rem;
  color:var(--accent-2);
  margin-bottom:14px;
}
.team-bio{color:var(--text-muted); font-size:.92rem; margin:0;}

.team-card--badge{
  background:linear-gradient(150deg, rgba(0,114,255,.14), rgba(0,198,255,.05));
  border-color:rgba(0,198,255,.3);
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.badge-num{
  font-family:var(--font-mono);
  font-size:2.6rem;
  font-weight:700;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  margin-bottom:6px;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact{padding:100px 0; background:var(--bg-soft);}
.contact-grid{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:56px;
}
.contact-info h2{font-size:clamp(1.6rem,3vw,2.1rem);}
.contact-info p{color:var(--text-muted); max-width:420px;}
.contact-list{list-style:none; margin:28px 0; padding:0; display:flex; flex-direction:column; gap:16px;}
.contact-list li{display:flex; flex-direction:column; gap:2px;}
.contact-label{font-family:var(--font-mono); font-size:.76rem; color:var(--text-faint); text-transform:lowercase;}
.contact-list a{font-weight:500;}
.contact-list a:hover{color:var(--accent-2);}

.social-row{display:flex; gap:12px;}
.social-row a{
  width:38px; height:38px;
  border-radius:50%;
  border:1px solid var(--card-border);
  display:flex; align-items:center; justify-content:center;
  transition:border-color .2s, color .2s;
}
.social-row svg{width:17px; height:17px;}
.social-row a:hover{border-color:var(--accent-2); color:var(--accent-2);}

.contact-form{
  background:var(--card);
  border:1px solid var(--card-border);
  border-radius:var(--radius-m);
  padding:36px;
  box-shadow:var(--shadow);
}
.form-row{margin-bottom:20px;}
.form-row--split{display:grid; grid-template-columns:1fr 1fr; gap:16px;}
.form-row label{
  display:block;
  font-size:.83rem;
  font-weight:500;
  color:var(--text-muted);
  margin-bottom:7px;
}
.form-row input,
.form-row select,
.form-row textarea{
  width:100%;
  padding:12px 14px;
  border-radius:var(--radius-s);
  border:1px solid var(--card-border);
  background:var(--input-bg);
  color:var(--text);
  font-family:inherit;
  font-size:.95rem;
  transition:border-color .2s;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus{
  border-color:var(--accent-2);
  outline:none;
}
.form-row textarea{resize:vertical; min-height:100px;}

.btn-form{width:100%; position:relative; margin-top:4px;}
.btn-spinner{
  display:none;
  width:16px; height:16px;
  border-radius:50%;
  border:2px solid rgba(255,255,255,.4);
  border-top-color:#fff;
  animation:spin .7s linear infinite;
}
.contact-form.is-submitting .btn-text{opacity:.6;}
.contact-form.is-submitting .btn-spinner{display:inline-block;}
@keyframes spin{ to{ transform:rotate(360deg); } }

.form-status{
  margin:14px 0 0;
  font-size:.88rem;
  min-height:1.2em;
}
.form-status.is-success{color:#3ddc97;}
.form-status.is-error{color:#ff6b6b;}

/* ============================================================
   FOOTER
   ============================================================ */
.footer{padding:56px 0 0; border-top:1px solid var(--card-border);}
.footer-grid{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:32px;
  padding-bottom:40px;
}
.footer-grid > div:first-child{max-width:340px;}
.footer-grid p{color:var(--text-muted); font-size:.92rem; margin-top:12px;}
.footer-links{display:flex; flex-wrap:wrap; gap:24px; align-items:flex-start;}
.footer-links a{color:var(--text-muted); font-size:.92rem;}
.footer-links a:hover{color:var(--accent-2);}
.footer-bottom{
  border-top:1px solid var(--card-border);
  padding:20px 32px;
  text-align:center;
}
.footer-bottom p{margin:0; font-size:.82rem; color:var(--text-faint);}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 980px){
  .hero-inner{grid-template-columns:1fr; text-align:left;}
  .hero-visual{order:-1; max-width:340px; margin:0 auto 20px;}
  .about-grid{grid-template-columns:1fr; gap:40px;}
  .services-grid{grid-template-columns:repeat(2,1fr);}
  .team-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr; gap:40px;}
  .work-grid{grid-template-columns:1fr 1fr; grid-template-rows:200px 200px 200px;}
  .work-item--video{grid-column:span 2; grid-row:auto; height:260px;}
}

@media (max-width: 768px){
  .nav-links{display:none;}
  .hamburger{display:flex;}
  .btn-nav{display:none;}
  .lang-toggle{display:flex;}
  .services-grid{grid-template-columns:1fr;}
  .team-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:1fr 1fr;}
  .work-grid{grid-template-columns:1fr;}
  .work-item--video{grid-column:auto; height:220px;}
  .form-row--split{grid-template-columns:1fr;}
  .section-inner{padding:0 20px;}
  .nav-inner{padding:0 20px;}
  .hero{padding:calc(var(--nav-h) + 48px) 0 60px;}
}

@media (max-width: 480px){
  .stats-grid{grid-template-columns:1fr;}
  .hero-actions{flex-direction:column; align-items:stretch;}
  .contact-form{padding:24px;}
}