/* ============================================================
   Nexolyst Digital Skills — stylesheet
   Palette: teal-900 #123832, teal-800 #1B4A42, gold #E7A93D,
            mauve #6E4B5E, cream #F6F2EA, ink #16302B, muted #5C7A72
   Type: Quicksand (display) + Inter (body)
   ============================================================ */

:root{
  --teal-900:#0B0F1A;   /* main dark surface (obsidian) */
  --teal-800:#141B2E;   /* dark gradient stop */
  --teal-700:#1B2540;   /* CTA band gradient stop */
  --gold:#06B6D4;       /* primary accent / CTA (cyan) */
  --gold-dark:#0891B2;  /* accent hover */
  --mauve:#4F46E5;      /* "Learn" accent (indigo) */
  --mauve-light:#A5B4FC;/* indigo, lightened for readability on dark */
  --emerald:#10B981;    /* "Earn" accent (emerald) */
  --cream:#F5F7FA;      /* paper / off-white neutral (page bg, text-on-dark, card icon bg) */
  --cream-dim:#ECEFF3;  /* muted paper tint (strip backgrounds, dividers) */
  --ink:#12172B;        /* body text on light bg */
  --muted:#5B6472;      /* secondary text on light bg */
  --white:#FFFFFF;
  --teal-accent:#5EEAD4; /* "Digital Skills" subheadline accent */

  --font-display:'Quicksand', sans-serif;
  --font-body:'Inter', sans-serif;

  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:28px;
  --radius-pill:999px;

  --shadow-card:0 1px 2px rgba(11,15,26,0.06);
  --max-w:1160px;

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

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
}

body{
  margin:0;
  font-family:var(--font-body);
  background:var(--cream);
  color:var(--ink);
  line-height:1.7;
  font-size:16.5px;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.15;
  margin:0 0 0.5em;
  color:var(--ink);
}
h1{ font-size:clamp(2.4rem,5vw,3.75rem); letter-spacing:-0.01em; }
h2{ font-size:clamp(1.9rem,3.6vw,2.6rem); }
h3{ font-size:1.3rem; }
p{ margin:0 0 1em; max-width:62ch; }
a{ color:inherit; }
img{ max-width:100%; display:block; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; }

.container{ max-width:var(--max-w); margin:0 auto; padding:0 24px; }
.section{ padding:96px 0; }
.section--tight{ padding:64px 0; }
.section-head{ max-width:640px; margin:0 0 48px; }
.section-head p{ color:var(--muted); font-size:1.08rem; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

.on-dark{ background:var(--teal-900); color:var(--cream); }
.on-dark h2, .on-dark h3, .on-dark p{ color:var(--cream); }
.on-dark .section-head p{ color:#BFD1CB; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--radius-pill);
  font-family:var(--font-display);
  font-weight:700;
  font-size:1rem;
  text-decoration:none;
  border:2px solid transparent;
  cursor:pointer;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .25s var(--ease);
  white-space:nowrap;
}
.btn:active{ transform:translateY(1px) scale(.98); }
.btn-primary{ background:var(--gold); color:var(--teal-900); }
.btn-primary:hover{ background:var(--gold-dark); box-shadow:0 10px 24px rgba(231,169,61,0.35); transform:translateY(-2px); }
.btn-outline{ background:transparent; border-color:currentColor; color:inherit; }
.btn-outline:hover{ background:rgba(255,255,255,0.08); transform:translateY(-2px); }
.btn-whatsapp{ background:#1F5C4F; color:var(--cream); }
.btn-whatsapp:hover{ background:#256D5E; transform:translateY(-2px); box-shadow:0 10px 24px rgba(31,92,79,0.35); }
.btn-icon{ width:18px; height:18px; flex:none; }
.btn-block{ width:100%; }

/* ---------- Header ---------- */
.site-header{
  position:fixed; top:0; left:0; right:0; z-index:100;
  background:rgba(18,56,50,0);
  transition:background .35s var(--ease), box-shadow .35s var(--ease), padding .35s var(--ease);
  padding:22px 0;
}
.site-header.scrolled{
  background:rgba(18,56,50,0.97);
  box-shadow:0 8px 24px rgba(0,0,0,0.18);
  padding:12px 0;
  backdrop-filter:saturate(140%) blur(6px);
}
.site-header .container{ display:flex; align-items:center; justify-content:space-between; gap:24px; }
.brand{ display:flex; align-items:center; gap:12px; text-decoration:none; }
.brand img{ width:42px; height:42px; transition:width .35s var(--ease), height .35s var(--ease); }
.site-header.scrolled .brand img{ width:36px; height:36px; }
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-text strong{ font-family:var(--font-display); font-weight:700; font-size:1.28rem; color:var(--cream); }
.brand-text span{ font-size:0.72rem; color:var(--gold); letter-spacing:0.03em; }

.nav-links{ display:flex; align-items:center; gap:34px; }
.nav-links a{
  position:relative; text-decoration:none; color:var(--cream);
  font-size:0.98rem; font-weight:500; padding:6px 0;
}
.nav-links a::after{
  content:''; position:absolute; left:0; right:100%; bottom:0; height:2px;
  background:var(--gold); transition:right .3s var(--ease);
}
.nav-links a:hover::after{ right:0; }
.nav-cta{ display:flex; align-items:center; gap:14px; }
.nav-cta .btn{ padding:11px 22px; font-size:0.92rem; }

.menu-toggle{
  display:none; background:none; border:none; color:var(--cream);
  width:40px; height:40px; cursor:pointer; padding:0;
}
.menu-toggle span{ display:block; width:24px; height:2px; background:var(--cream); margin:6px auto; transition:transform .3s var(--ease), opacity .3s var(--ease); }
.menu-toggle.open span:nth-child(1){ transform:translateY(8px) rotate(45deg); }
.menu-toggle.open span:nth-child(2){ opacity:0; }
.menu-toggle.open span:nth-child(3){ transform:translateY(-8px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(160deg, var(--teal-900) 0%, var(--teal-800) 100%);
  color:var(--cream);
  padding:180px 0 100px;
  overflow:hidden;
  position:relative;
}
.hero .container{ display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; align-items:center; }
.hero-tag{
  display:inline-flex; align-items:center; gap:8px;
  background:rgba(231,169,61,0.12); border:1px solid rgba(231,169,61,0.4);
  color:var(--gold); font-size:0.86rem; font-weight:600;
  padding:8px 16px; border-radius:var(--radius-pill); margin-bottom:22px;
}
.hero h1{ color:var(--cream); }
.hero .lede{ color:#CFE0DA; font-size:1.14rem; max-width:52ch; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:16px; margin:32px 0 44px; }

.hero-stats{ display:flex; gap:40px; flex-wrap:wrap; }
.stat .num{ font-family:var(--font-display); font-weight:700; font-size:2.1rem; color:var(--gold); }
.stat .num.mauve{ color:var(--mauve-light); }
.stat .num.cream{ color:var(--emerald); }
.stat .label{ font-size:0.9rem; color:#AFC6BF; }

.hero-tagline{ font-family:var(--font-display); font-weight:700; font-size:1.15rem; margin:18px 0 0; }
.tag-learn{ color:var(--mauve-light); }
.tag-evolve{ color:var(--gold); }
.tag-earn{ color:var(--emerald); }

/* Hero logo illustration */
.hero-art{ position:relative; height:420px; display:flex; align-items:center; justify-content:center; }
.hero-glow{
  position:absolute; width:360px; height:360px; border-radius:50%;
  background:radial-gradient(circle, rgba(6,182,212,0.22), rgba(6,182,212,0) 70%);
}
.hero-logo-anim{
  position:relative; width:260px; height:260px;
  opacity:0; transform:scale(.7) rotate(-8deg);
  animation: logoRise 1s var(--ease) forwards, floatLoop 5s ease-in-out 1.1s infinite;
  filter:drop-shadow(0 20px 40px rgba(0,0,0,0.35));
}
@keyframes logoRise{ to{ opacity:1; transform:scale(1) rotate(0); } }
@keyframes floatLoop{
  0%,100%{ transform:scale(1) rotate(0) translateY(0); }
  50%{ transform:scale(1) rotate(0) translateY(-14px); }
}
.orbit-ring{ position:absolute; inset:0; border:1px dashed rgba(245,247,250,0.14); border-radius:50%; margin:auto; width:380px; height:380px; }

/* ---------- Marquee / partner strip ---------- */
.partner-strip{ background:var(--cream-dim); padding:20px 0; border-top:1px solid rgba(18,56,50,0.08); border-bottom:1px solid rgba(18,56,50,0.08); }
.partner-strip .container{ display:flex; align-items:center; justify-content:center; gap:14px; flex-wrap:wrap; text-align:center; }
.partner-strip strong{ color:var(--teal-900); }
.partner-strip span{ color:var(--muted); font-size:0.95rem; }

/* ---------- Courses ---------- */
.course-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.course-card{
  background:var(--white); border:1px solid rgba(18,56,50,0.1);
  border-left:4px solid rgba(18,56,50,0.1);
  border-radius:var(--radius-md); padding:28px 26px;
  transition:transform .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.course-card:hover{
  transform:translateY(-6px);
  border-left-color:var(--gold);
  box-shadow:0 18px 34px rgba(18,56,50,0.12);
}
.course-icon{
  width:48px; height:48px; border-radius:12px; background:var(--cream);
  display:flex; align-items:center; justify-content:center; margin-bottom:18px;
  color:var(--teal-900);
}
.course-icon svg{ width:24px; height:24px; }
.course-card h3{ margin-bottom:8px; font-size:1.15rem; }
.course-card p{ color:var(--muted); font-size:0.98rem; margin-bottom:0; }

/* ---------- FAQ ---------- */
.faq-list{ display:flex; flex-direction:column; gap:14px; max-width:820px; }
.faq-item{
  background:var(--white); border:1px solid rgba(11,15,26,0.1);
  border-radius:var(--radius-md); padding:6px 26px;
  transition:border-color .2s var(--ease);
}
.faq-item[open]{ border-color:var(--gold); }
.faq-item summary{
  cursor:pointer; padding:18px 0; font-family:var(--font-display);
  font-weight:600; font-size:1.05rem; color:var(--ink);
  list-style:none; position:relative; padding-right:32px;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{
  content:'+'; position:absolute; right:0; top:16px; font-size:1.4rem;
  color:var(--gold-dark); transition:transform .25s var(--ease);
}
.faq-item[open] summary::after{ transform:rotate(45deg); }
.faq-item p{ color:var(--muted); margin:0 0 20px; font-size:0.98rem; }

/* ---------- Why us ---------- */
.why-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:28px 40px; }
.why-item{ display:flex; gap:16px; }
.why-icon{
  flex:none; width:44px; height:44px; border-radius:50%;
  background:rgba(231,169,61,0.15); color:var(--gold-dark);
  display:flex; align-items:center; justify-content:center;
}
.why-icon svg{ width:22px; height:22px; }
.why-item h3{ font-size:1.08rem; margin-bottom:6px; }
.why-item p{ color:var(--muted); font-size:0.97rem; margin-bottom:0; }

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(135deg, var(--teal-900), var(--teal-700));
  border-radius:var(--radius-lg);
  padding:64px 56px;
  display:flex; align-items:center; justify-content:space-between; gap:32px;
  flex-wrap:wrap;
  color:var(--cream);
}
.cta-band h2{ color:var(--cream); margin-bottom:10px; }
.cta-band p{ color:#CFE0DA; margin-bottom:0; }
.cta-actions{ display:flex; gap:16px; flex-wrap:wrap; }

/* ---------- Contact / form ---------- */
.contact-wrap{ display:grid; grid-template-columns:1fr 1.1fr; gap:56px; align-items:start; }
.contact-info h2{ margin-bottom:14px; }
.contact-info p{ color:var(--muted); }
.contact-list{ margin-top:28px; display:flex; flex-direction:column; gap:18px; }
.contact-list li{ display:flex; align-items:center; gap:14px; }
.contact-list .ci-icon{
  flex:none; width:42px; height:42px; border-radius:50%; background:var(--teal-900); color:var(--gold);
  display:flex; align-items:center; justify-content:center;
}
.contact-list .ci-icon svg{ width:20px; height:20px; }
.contact-list a{ text-decoration:none; font-weight:600; }

.social-row{ display:flex; gap:12px; margin-top:28px; }
.social-row a{
  width:42px; height:42px; border-radius:50%; background:var(--teal-900); color:var(--cream);
  display:flex; align-items:center; justify-content:center; text-decoration:none;
  transition:background .25s var(--ease), transform .25s var(--ease);
}
.social-row a:hover{ background:var(--gold); color:var(--teal-900); transform:translateY(-3px); }
.social-row svg{ width:19px; height:19px; }

.form-card{ background:var(--white); border-radius:var(--radius-lg); padding:40px; box-shadow:0 20px 60px rgba(18,56,50,0.1); }
.field{ margin-bottom:20px; }
.field label{ display:block; font-size:0.92rem; font-weight:600; margin-bottom:7px; color:var(--teal-900); }
.field input, .field select, .field textarea{
  width:100%; padding:13px 15px; border-radius:var(--radius-sm);
  border:1.5px solid #D8D2C4; font-family:var(--font-body); font-size:0.98rem;
  background:var(--cream); color:var(--ink);
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea{ resize:vertical; min-height:100px; }
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--teal-700); box-shadow:0 0 0 4px rgba(18,56,50,0.1);
}
.field.error input, .field.error select, .field.error textarea{ border-color:#B3453B; box-shadow:0 0 0 4px rgba(179,69,59,0.08); }
.field .error-msg{ display:none; color:#B3453B; font-size:0.84rem; margin-top:6px; }
.field.error .error-msg{ display:block; }
.field.shake{ animation:shake .4s var(--ease); }
@keyframes shake{ 20%,60%{transform:translateX(-6px);} 40%,80%{transform:translateX(6px);} }
.row-2{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }

.form-status{ margin-top:18px; padding:14px 16px; border-radius:var(--radius-sm); font-size:0.95rem; display:none; }
.form-status.show{ display:block; }
.form-status.success{ background:rgba(18,56,50,0.08); color:var(--teal-900); }
.form-status.sending{ background:rgba(231,169,61,0.12); color:var(--gold-dark); }

/* ---------- Footer ---------- */
.site-footer{ background:var(--teal-900); color:#BFD1CB; padding:64px 0 28px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; margin-bottom:48px; }
.footer-brand .brand-text strong{ color:var(--cream); }
.footer-brand p{ color:#9DB6AE; margin-top:14px; max-width:36ch; }
.footer-col h4{ color:var(--cream); font-family:var(--font-display); font-size:1rem; margin-bottom:16px; }
.footer-col ul li{ margin-bottom:10px; }
.footer-col a{ text-decoration:none; color:#BFD1CB; font-size:0.95rem; transition:color .2s var(--ease); }
.footer-col a:hover{ color:var(--gold); }
.footer-bottom{ border-top:1px solid rgba(246,242,234,0.12); padding-top:24px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:0.86rem; color:#7FA096; }

/* ---------- WhatsApp floating button ---------- */
.wa-float{
  position:fixed; bottom:26px; right:26px; z-index:90;
  width:60px; height:60px; border-radius:50%;
  background:#1F5C4F; color:var(--cream);
  display:flex; align-items:center; justify-content:center;
  text-decoration:none; box-shadow:0 10px 30px rgba(0,0,0,0.25);
}
.wa-float svg{ width:28px; height:28px; }
.wa-float::before{
  content:''; position:absolute; inset:0; border-radius:50%;
  background:#1F5C4F; opacity:.55; animation:pulse 2.4s ease-out infinite;
  z-index:-1;
}
@keyframes pulse{ 0%{ transform:scale(1); opacity:.55; } 100%{ transform:scale(1.9); opacity:0; } }

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .hero .container{ grid-template-columns:1fr; }
  .hero-art{ height:320px; order:-1; }
  .course-grid{ grid-template-columns:repeat(2,1fr); }
  .why-grid{ grid-template-columns:1fr; }
  .contact-wrap{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width:720px){
  .nav-links{
    position:fixed; top:0; right:0; height:100vh; width:78%; max-width:320px;
    background:var(--teal-900); flex-direction:column; align-items:flex-start;
    padding:110px 32px 40px; gap:26px; transform:translateX(100%);
    transition:transform .35s var(--ease); box-shadow:-10px 0 40px rgba(0,0,0,0.3);
  }
  .nav-links.open{ transform:translateX(0); }
  .nav-cta{ display:none; }
  .menu-toggle{ display:block; }
  .course-grid{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
  .cta-band{ flex-direction:column; text-align:center; padding:48px 28px; }
  .row-2{ grid-template-columns:1fr; }
  .form-card{ padding:28px; }
  .section{ padding:72px 0; }
}

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

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