/* =========================================================
   Kodesetu — main stylesheet
   Brand colors pulled from the logo: deep navy + teal/cyan
   ========================================================= */

:root{
  --navy-900:#081326;
  --navy-800:#0c2140;
  --navy-700:#122d54;
  --teal-400:#2dd6d6;
  --teal-500:#17c3c3;
  --teal-600:#0fa6a6;
  --gray-50:#f7f9fc;
  --gray-100:#eef1f6;
  --gray-400:#8b93a3;
  --gray-600:#5a6373;
  --white:#ffffff;
  --radius:14px;
  --shadow-sm:0 4px 14px rgba(8,19,38,.06);
  --shadow-md:0 12px 30px rgba(8,19,38,.10);
  --shadow-lg:0 20px 50px rgba(8,19,38,.18);
  --font-head:'Poppins',sans-serif;
  --font-body:'Inter',sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--navy-900);
  line-height:1.65;
  background:var(--white);
  overflow-x:hidden;
}
/* Mobile browsers paint a gray/blue rectangle over the whole tap target when
   you tap a button or link — because that highlight ignores border-radius,
   it shows up as an ugly square glow poking out of rounded buttons. Turning
   it off (and adding our own :active feedback below) fixes that. */
a,button,.btn,input,textarea,select{
  -webkit-tap-highlight-color:transparent;
  tap-highlight-color:transparent;
}
h1,h2,h3,h4,h5{font-family:var(--font-head);color:var(--navy-900);line-height:1.25;margin:0 0 .5em;}
p{margin:0 0 1em;color:var(--gray-600);}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
ul{list-style:none;margin:0;padding:0;}
.text-teal{color:var(--teal-500);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

.section{padding:96px 0;}
.section-alt{background:var(--gray-50);}
.section-head{max-width:640px;margin:0 auto 56px;text-align:center;}
.section-sub{font-size:1.05rem;}
.eyebrow{
  display:inline-block;
  font-family:var(--font-head);
  font-weight:600;
  font-size:.8rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--teal-600);
  margin-bottom:10px;
}
.section-head .eyebrow{display:block;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:50px;
  font-family:var(--font-head);
  font-weight:600;
  font-size:.95rem;
  border:2px solid transparent;
  cursor:pointer;
  touch-action:manipulation;      /* removes the tap delay on mobile */
  -webkit-user-select:none;user-select:none;
  transition:transform .15s ease, box-shadow .2s ease, background .2s ease, color .2s ease, filter .15s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);}
/* Tactile feedback on tap/click instead of the browser's default highlight */
.btn:active{transform:translateY(0) scale(.97);filter:brightness(.96);}
.btn:focus-visible{outline:2px solid var(--teal-500);outline-offset:3px;}

.btn-primary{
  background:linear-gradient(135deg,var(--teal-500),var(--navy-700));
  color:var(--white);
  box-shadow:0 6px 16px -4px rgba(15,166,166,.45), 0 2px 6px rgba(8,19,38,.12);
}
.btn-primary:hover{box-shadow:0 10px 24px -4px rgba(15,166,166,.55), 0 4px 10px rgba(8,19,38,.16);}
.btn-primary:active{box-shadow:0 3px 10px -2px rgba(15,166,166,.4);}

.btn-outline{
  background:transparent;
  border-color:rgba(255,255,255,.55);
  color:var(--white);
}
.btn-outline:hover{background:rgba(255,255,255,.12);}
.btn-outline:active{background:rgba(255,255,255,.2);}

.btn-lg{padding:16px 34px;font-size:1rem;}
.btn-block{width:100%;}
.btn-whatsapp-sm{
  background:#e9fbf9;
  color:var(--navy-800);
  padding:9px 16px;
  font-size:.88rem;
  box-shadow:none;
}
.btn-whatsapp-sm:hover{background:#ddf7f3;}
.btn-whatsapp-sm i{color:#25D366;}

/* ---------- Preloader ---------- */
#preloader{
  position:fixed;inset:0;background:var(--navy-900);
  display:flex;align-items:center;justify-content:center;
  z-index:9999;transition:opacity .4s ease, visibility .4s ease;
}
#preloader.hide{opacity:0;visibility:hidden;}
.loader-ring{
  width:50px;height:50px;border-radius:50%;
  border:4px solid rgba(45,214,214,.25);
  border-top-color:var(--teal-400);
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- Navbar ---------- */
.navbar{
  position:fixed;top:0;left:0;right:0;
  z-index:1000;
  /* Solid (not blurred) background on purpose: a backdrop-filter/transform on
     this ancestor would create a new containing block, which breaks the
     "position:fixed" full-height mobile menu below (.nav-links). */
  background:rgba(255,255,255,.97);
  box-shadow:0 1px 0 rgba(8,19,38,.06);
  transition:box-shadow .3s ease;
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;
}
.brand-logo{height:46px;width:auto;}
.nav-links{display:flex;gap:30px;}
.nav-links a{
  font-family:var(--font-head);
  font-weight:500;
  font-size:.95rem;
  color:var(--navy-800);
  position:relative;
  padding:6px 0;
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:0;width:0;height:2px;
  background:var(--teal-500);transition:width .25s ease;
}
.nav-links a:hover::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:12px;}

.hamburger{
  display:none;flex-direction:column;gap:5px;
  background:none;border:none;cursor:pointer;padding:8px;
}
.hamburger span{width:26px;height:2.5px;background:var(--navy-900);border-radius:2px;transition:all .3s ease;}
.hamburger.active span:nth-child(1){transform:translateY(7.5px) rotate(45deg);}
.hamburger.active span:nth-child(2){opacity:0;}
.hamburger.active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:140px 0 60px;
  background:
    linear-gradient(120deg, rgba(8,19,38,.88), rgba(12,33,64,.80)),
    url('https://images.unsplash.com/photo-1498050108023-c5249f4df085?auto=format&fit=crop&w=1800&q=80') center/cover no-repeat;
  background-color:var(--navy-900);
  text-align:center;
  color:var(--white);
}
.hero-overlay{position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 50% 0%, rgba(45,214,214,.15), transparent 60%);}
.hero-inner{position:relative;z-index:1;max-width:820px;}
.hero .eyebrow{color:var(--teal-400);}
.hero h1{font-size:clamp(2.2rem,5vw,3.6rem);color:var(--white);margin-bottom:22px;}
.hero-sub{font-size:1.1rem;color:rgba(255,255,255,.82);max-width:640px;margin:0 auto 34px;}
.hero-cta{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:56px;}
.hero-stats{display:flex;gap:40px;justify-content:center;flex-wrap:wrap;}
.hero-stats div{display:flex;flex-direction:column;align-items:center;}
.hero-stats .count{font-family:var(--font-head);font-size:2rem;font-weight:700;color:var(--teal-400);}
.hero-stats small{color:rgba(255,255,255,.7);font-size:.82rem;margin-top:4px;}

.scroll-down{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);
  color:rgba(255,255,255,.75);font-size:1.3rem;
  animation:bounce 2s infinite;
}
@keyframes bounce{0%,100%{transform:translate(-50%,0);}50%{transform:translate(-50%,8px);}}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.about-img{position:relative;}
.about-img img{border-radius:var(--radius);box-shadow:var(--shadow-lg);}
.about-badge{
  position:absolute;bottom:-24px;right:-24px;
  background:var(--white);border-radius:var(--radius);
  box-shadow:var(--shadow-md);
  padding:16px 20px;display:flex;align-items:center;gap:14px;
  max-width:230px;
}
.about-badge i{
  width:44px;height:44px;flex:none;
  background:linear-gradient(135deg,var(--teal-500),var(--navy-700));
  color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;
}
.about-badge strong{display:block;font-family:var(--font-head);font-size:1rem;}
.about-badge span{font-size:.78rem;color:var(--gray-600);}
.check-list li{display:flex;gap:10px;align-items:flex-start;margin-bottom:12px;color:var(--navy-800);font-weight:500;}
.check-list i{color:var(--teal-500);margin-top:3px;}

/* ---------- Grids / Cards ---------- */
.grid{display:grid;gap:28px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}

.card{
  background:var(--white);
  border-radius:var(--radius);
  padding:34px 28px;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease, box-shadow .25s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.service-icon{
  width:58px;height:58px;border-radius:16px;
  background:linear-gradient(135deg,var(--teal-500),var(--navy-700));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:1.4rem;margin-bottom:18px;
}
.service-card h3{font-size:1.15rem;}
.service-card p{margin-bottom:0;font-size:.94rem;}

/* ---------- Training / courses ---------- */
.course-card{
  border-radius:var(--radius);overflow:hidden;background:var(--white);
  box-shadow:var(--shadow-sm);transition:transform .25s ease, box-shadow .25s ease;
}
.course-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);}
.course-img{height:150px;background-size:cover;background-position:center;background-color:var(--navy-700);}
.course-body{padding:22px 22px 26px;}
.course-body h3{font-size:1.05rem;}
.course-body p{font-size:.9rem;margin-bottom:14px;}
.course-link{color:var(--teal-600);font-weight:600;font-size:.9rem;display:inline-flex;gap:6px;align-items:center;}
.course-link:hover{text-decoration:underline;}

/* ---------- Why choose us ---------- */
.why-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:center;}
.why-item{display:flex;gap:18px;margin-bottom:26px;}
.why-item i{
  flex:none;width:48px;height:48px;border-radius:50%;
  background:var(--white);color:var(--teal-600);
  display:flex;align-items:center;justify-content:center;font-size:1.2rem;
  box-shadow:var(--shadow-sm);
}
.why-item h4{margin-bottom:4px;font-size:1.05rem;}
.why-item p{margin-bottom:0;font-size:.92rem;}
.why-img img{border-radius:var(--radius);box-shadow:var(--shadow-lg);}

/* ---------- Portfolio ---------- */
.portfolio-card{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);}
.portfolio-card img{height:260px;width:100%;object-fit:cover;transition:transform .4s ease;}
.portfolio-card:hover img{transform:scale(1.08);}
.portfolio-overlay{
  position:absolute;inset:0;
  background:linear-gradient(0deg, rgba(8,19,38,.88), rgba(8,19,38,.05) 60%);
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:22px;color:#fff;
}
.portfolio-overlay span{font-family:var(--font-head);font-weight:600;font-size:1.05rem;}
.portfolio-overlay small{color:rgba(255,255,255,.75);}

/* ---------- Testimonials ---------- */
.testimonial-card{background:var(--white);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm);}
.stars{color:#f5a623;margin-bottom:14px;font-size:.9rem;}
.testimonial-card p{font-style:italic;color:var(--navy-800);}
.testimonial-author strong{display:block;font-family:var(--font-head);font-size:.98rem;}
.testimonial-author span{font-size:.82rem;color:var(--gray-400);}

/* ---------- Contact ---------- */
.contact-section{
  position:relative;
  background:
    linear-gradient(120deg, rgba(8,19,38,.92), rgba(12,33,64,.90)),
    url('https://images.unsplash.com/photo-1454165804606-c3d57bc86b40?auto=format&fit=crop&w=1800&q=80') center/cover no-repeat;
  background-color:var(--navy-900);
  color:#fff;
}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:flex-start;}
.contact-info .eyebrow{color:var(--teal-400);}
.contact-info h2{color:#fff;}
.contact-info p{color:rgba(255,255,255,.78);}
.contact-line{
  display:flex;align-items:center;gap:12px;
  margin-bottom:16px;font-weight:500;color:#fff;
}
.contact-line i{
  width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;
  color:var(--teal-400);flex:none;
}
.social-links{display:flex;gap:12px;margin-top:24px;}
.social-links a{
  width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;
  transition:background .2s ease, transform .2s ease;
}
.social-links a:hover{background:var(--teal-500);transform:translateY(-3px);}

.contact-form{
  background:#fff;border-radius:var(--radius);
  padding:38px 34px;box-shadow:var(--shadow-lg);color:var(--navy-900);
  position:relative;
}
.contact-form h3{margin-bottom:20px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form-group{margin-bottom:18px;position:relative;}
.form-group label{display:block;font-size:.85rem;font-weight:600;margin-bottom:6px;color:var(--navy-800);}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:12px 14px;border-radius:10px;
  border:1.5px solid #dfe4ec;font-family:var(--font-body);font-size:.95rem;
  background:var(--gray-50);color:var(--navy-900);
  transition:border-color .2s ease, box-shadow .2s ease;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
  outline:none;border-color:var(--teal-500);box-shadow:0 0 0 3px rgba(23,195,195,.15);
}
.form-group textarea{resize:vertical;min-height:100px;}
.error-msg{display:none;color:#e0453f;font-size:.78rem;margin-top:5px;}
.form-group.invalid input,.form-group.invalid select,.form-group.invalid textarea{border-color:#e0453f;}
.form-group.invalid .error-msg{display:block;}

.btn-spinner{
  width:18px;height:18px;border-radius:50%;
  border:2.5px solid rgba(255,255,255,.4);border-top-color:#fff;
  display:none;animation:spin .7s linear infinite;
}
#submitBtn.loading .btn-text{opacity:.6;}
#submitBtn.loading .btn-spinner{display:inline-block;}

.form-note{font-size:.78rem;color:var(--gray-400);margin-top:14px;text-align:center;}
.form-note i{color:var(--teal-600);}

.form-success{
  display:none;
  align-items:flex-start;gap:14px;
  background:#e9fbf6;border:1px solid #b7ebdf;
  border-radius:12px;padding:18px 20px;margin-top:18px;
}
.form-success.show{display:flex;}
.form-success i{color:#12b76a;font-size:1.4rem;margin-top:2px;}
.form-success strong{display:block;margin-bottom:4px;}
.form-success p{margin:0;font-size:.88rem;color:var(--gray-600);}
.form-success a{color:var(--teal-600);font-weight:600;text-decoration:underline;}

/* ---------- Footer ---------- */
.footer{background:var(--navy-900);color:rgba(255,255,255,.75);padding:70px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:50px;}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-logo img{height:34px;width:auto;}
.footer-logo span{font-family:var(--font-head);font-weight:700;font-size:1.2rem;color:#fff;}
.footer-brand p{color:rgba(255,255,255,.6);font-size:.9rem;}
.footer-col h4{color:#fff;font-size:1rem;margin-bottom:18px;}
.footer-col a,.footer-col span{
  display:flex;align-items:center;gap:8px;
  color:rgba(255,255,255,.65);font-size:.9rem;margin-bottom:12px;
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--teal-400);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  text-align:center;padding:22px 0;font-size:.85rem;color:rgba(255,255,255,.5);
}

/* ---------- Floating buttons ---------- */
.whatsapp-float{
  position:fixed;bottom:26px;right:26px;z-index:900;
  width:60px;height:60px;border-radius:50%;
  background:#25D366;color:#fff;font-size:1.7rem;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 24px rgba(37,211,102,.45);
  animation:pulse 2.4s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(37,211,102,.55);}
  70%{box-shadow:0 0 0 16px rgba(37,211,102,0);}
  100%{box-shadow:0 0 0 0 rgba(37,211,102,0);}
}
#backToTop{
  position:fixed;bottom:26px;right:96px;z-index:900;
  width:46px;height:46px;border-radius:50%;border:none;cursor:pointer;
  background:var(--navy-800);color:#fff;font-size:1rem;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .3s ease;
}
#backToTop.show{opacity:1;visibility:visible;transform:translateY(0);}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease, transform .7s ease;}
.reveal.in-view{opacity:1;transform:translateY(0);}

/* =========================================================
   Responsive breakpoints
   ========================================================= */
@media (max-width:991px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .about-grid,.why-grid,.contact-grid{grid-template-columns:1fr;gap:44px;}
  .why-img{order:-1;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

@media (max-width:768px){
  .nav-links{
    position:fixed;top:76px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;gap:0;
    padding:10px 24px 30px;
    transform:translateY(-120%);
    transition:transform .35s ease;
    overflow-y:auto;
  }
  .nav-links.active{transform:translateY(0);}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--gray-100);width:100%;}
  .nav-actions{display:none;}
  .hamburger{display:flex;}

  .section{padding:64px 0;}
  .grid-3,.grid-4{grid-template-columns:1fr;}
  .hero{padding-top:120px;}
  .hero-stats{gap:24px;}
  .hero-stats .count{font-size:1.6rem;}
  .about-badge{position:static;margin-top:-40px;margin-left:16px;max-width:none;width:calc(100% - 32px);}
  .form-row{grid-template-columns:1fr;}
  .contact-form{padding:28px 22px;}
  .footer-grid{grid-template-columns:1fr;text-align:left;}
  #backToTop{right:20px;bottom:96px;}
  .whatsapp-float{right:20px;bottom:26px;width:54px;height:54px;font-size:1.5rem;}
}

@media (max-width:480px){
  .hero h1{font-size:1.9rem;}
  .btn-lg{padding:14px 24px;font-size:.92rem;}
  .hero-cta{flex-direction:column;width:100%;}
  .hero-cta .btn{width:100%;}
}