/* ============================================================
   Envision Coders — styles.css
   Palette: Indigo × Electric Blue (dark)
   ============================================================ */

/* ----- Design tokens ----- */
:root{
  --bg:#060814;
  --surface:rgba(20,26,58,.5);
  --border:rgba(129,140,248,.25);
  --border-strong:rgba(129,140,248,.6);
  --indigo:#4338CA;
  --violet:#818CF8;
  --blue:#3B82F6;
  --blue2:#60A5FA;
  --txt:#ECEEFF;
  --txt2:#AEB4D6;
  --muted:#7E84AB;
  --accent:#93C5FD;
  --grad-head:linear-gradient(120deg,#C7D2FE,#818CF8 50%,#60A5FA);
  --grad-cta:linear-gradient(90deg,#4338CA,#3B82F6);
  --maxw:1080px;
  --radius:16px;
}

/* ----- Reset / base ----- */
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--txt);
  line-height:1.6;
  overflow-x:hidden;
}
h1,h2,h3,.brand{font-family:'Space Grotesk','Inter',system-ui,sans-serif;letter-spacing:-.01em;}
a{color:inherit;text-decoration:none;}
img,svg{display:block;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 1.5rem;position:relative;z-index:1;}

/* ----- Skip link (a11y) ----- */
.skip-link{
  position:absolute;left:-999px;top:0;z-index:100;
  background:var(--indigo);color:#fff;padding:.6rem 1rem;border-radius:0 0 8px 0;
}
.skip-link:focus{left:0;}

/* ----- Focus visibility (a11y) ----- */
:focus-visible{outline:2px solid var(--blue2);outline-offset:2px;border-radius:6px;}

/* ----- Background glows ----- */
.glows{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;}
.glow{position:absolute;border-radius:50%;filter:blur(110px);animation:breathe 9s ease-in-out infinite;}
.glow.g1{width:560px;height:560px;background:var(--indigo);top:-200px;left:50%;transform:translateX(-50%);opacity:.5;}
.glow.g2{width:420px;height:420px;background:var(--blue);top:520px;right:-160px;opacity:.30;animation-delay:-3s;}
.glow.g3{width:380px;height:380px;background:#7C3AED;top:1100px;left:-150px;opacity:.26;animation-delay:-6s;}
/* g1 is horizontally centered, so its keyframes must preserve translateX(-50%);
   g2/g3 are placed by top/left and only need to scale (breathe2). */
@keyframes breathe{0%,100%{transform:translateX(-50%) scale(1);}50%{transform:translateX(-50%) scale(1.12);}}
@keyframes breathe2{0%,100%{transform:scale(1);}50%{transform:scale(1.12);}}
.glow.g2,.glow.g3{animation-name:breathe2;}

/* ----- Section scaffolding ----- */
.section{padding:5rem 0;}
section[id]{scroll-margin-top:5rem;} /* anchor targets clear the sticky header */
.section-label{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:.6rem;}
.section-title{
  font-size:clamp(1.7rem,3.5vw,2.5rem);font-weight:700;margin-bottom:2rem;
  background:var(--grad-head);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}

/* ----- Buttons ----- */
.btn{
  display:inline-block;cursor:pointer;border:none;font-family:'Inter',sans-serif;
  font-size:.9rem;font-weight:500;border-radius:999px;padding:.6rem 1.2rem;transition:transform .15s ease,box-shadow .2s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--grad-cta);color:#fff;box-shadow:0 6px 24px rgba(59,130,246,.35);}
.btn-ghost{background:transparent;color:var(--txt);border:1px solid var(--border);}
.btn-ghost:hover{border-color:var(--border-strong);}

/* ----- Scroll reveal (JS adds .visible) ----- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.reveal.visible{opacity:1;transform:none;}

/* ----- Reduced motion ----- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .glow{animation:none;}
  .reveal{opacity:1;transform:none;transition:none;}
  .btn,.card{transition:none;}
}

/* ----- Header / nav ----- */
.site-nav{position:sticky;top:0;z-index:20;background:rgba(6,8,20,.55);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .2s ease,background .2s ease;}
.site-nav.scrolled{border-bottom-color:var(--border);background:rgba(6,8,20,.78);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding-top:.85rem;padding-bottom:.85rem;}
.brand{font-weight:700;font-size:1.1rem;}
.brand b{font-weight:700;background:var(--grad-head);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.nav-links{display:flex;align-items:center;gap:1.6rem;}
.nav-links a{color:var(--txt2);font-size:.92rem;transition:color .15s ease;}
.nav-links a:hover,.nav-links a.active{color:var(--txt);}
.nav-links a.nav-cta{color:#fff;}
.nav-toggle{display:none;background:transparent;border:none;color:var(--txt);cursor:pointer;padding:.3rem;}

/* ----- Hero ----- */
.hero{text-align:center;padding:6rem 0 4.5rem;}
.badge{display:inline-flex;align-items:center;gap:.5rem;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);border:1px solid var(--border);padding:.4rem 1rem;border-radius:999px;}
.badge::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--blue2);box-shadow:0 0 10px var(--blue2);}
.hero-title{font-size:clamp(2.6rem,6vw,4.4rem);font-weight:700;line-height:1.04;margin:1.4rem 0 1rem;background:var(--grad-head);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero-sub{max-width:620px;margin:0 auto 2rem;color:var(--txt2);font-size:1.1rem;}
.cta-row{display:flex;gap:.8rem;justify-content:center;margin-bottom:3rem;flex-wrap:wrap;}
.metrics{display:flex;gap:2.6rem;justify-content:center;flex-wrap:wrap;}
.metric-n{font-family:'Space Grotesk',sans-serif;font-size:2rem;font-weight:700;color:#A5B4FC;}
.metric-l{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);}

/* ----- Cards grid (projects) ----- */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem;}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;backdrop-filter:blur(8px);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;}
.card:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:0 12px 40px rgba(67,56,202,.3);}
.card-ic{width:40px;height:40px;border-radius:10px;background:var(--grad-cta);display:flex;align-items:center;justify-content:center;margin-bottom:1rem;color:#fff;}
.card-ic svg{width:20px;height:20px;}
.card h3{font-size:1.05rem;margin-bottom:.35rem;}
.card p{font-size:.9rem;color:var(--txt2);}
.card-tag{display:inline-block;margin-top:.8rem;font-size:.72rem;color:var(--accent);border:1px solid var(--border);padding:.2rem .6rem;border-radius:999px;}

/* ----- Stack chips ----- */
.chips{display:flex;flex-wrap:wrap;gap:.7rem;}
.chip{background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:.55rem 1.1rem;font-size:.92rem;color:var(--txt2);backdrop-filter:blur(8px);}
.chip.core{border-color:var(--border-strong);color:#BFDBFE;box-shadow:0 0 18px rgba(59,130,246,.25);}

/* ----- Services ----- */
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem;align-items:start;}
.service{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.8rem 1.5rem;backdrop-filter:blur(8px);}
.service.featured{border-color:var(--border-strong);box-shadow:0 12px 50px rgba(67,56,202,.35);}
.service-badge{position:absolute;top:-.7rem;left:1.5rem;font-size:.65rem;letter-spacing:.12em;text-transform:uppercase;color:#fff;background:var(--grad-cta);padding:.25rem .7rem;border-radius:999px;}
.service h3{font-size:1.4rem;margin-bottom:.5rem;}
.service-lead{font-size:.92rem;color:var(--txt2);margin-bottom:1rem;}
.service ul{list-style:none;margin-bottom:1.5rem;}
.service li{font-size:.9rem;color:var(--txt2);padding-left:1.4rem;position:relative;margin-bottom:.5rem;}
.service li::before{content:'';position:absolute;left:0;top:.5rem;width:7px;height:7px;border-radius:50%;background:var(--blue2);box-shadow:0 0 8px var(--blue2);}
.btn-block{display:block;text-align:center;width:100%;}

/* ----- Contact ----- */
.contact-inner{text-align:center;}
.contact-lead{color:var(--txt2);margin-bottom:2rem;}
.email-row{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;}
.email-btn{display:flex;flex-direction:column;gap:.25rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.2rem 1.8rem;backdrop-filter:blur(8px);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;min-width:240px;}
.email-btn:hover{transform:translateY(-3px);border-color:var(--border-strong);box-shadow:0 10px 36px rgba(67,56,202,.3);}
.email-name{font-family:'Space Grotesk',sans-serif;font-size:1.15rem;font-weight:600;color:var(--txt);}
.email-role{font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);}
.email-addr{font-size:.95rem;color:#BFDBFE;font-weight:500;margin-top:.2rem;}

/* ----- Footer ----- */
.footer{border-top:1px solid var(--border);position:relative;z-index:1;}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-top:2rem;padding-bottom:2rem;}
.footer-emails{display:flex;gap:1.2rem;flex-wrap:wrap;}
.footer-emails a{color:var(--txt2);font-size:.9rem;}
.footer-emails a:hover{color:var(--txt);}
.footer-copy{font-size:.85rem;color:var(--muted);}

/* ----- Responsive ----- */
@media (max-width: 820px){
  .nav-toggle{display:block;}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(6,8,20,.96);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--border);
    padding:.5rem 1.5rem 1.2rem;
    max-height:0;overflow:hidden;opacity:0;pointer-events:none;
    transition:max-height .25s ease,opacity .25s ease;
  }
  .nav-links.open{max-height:420px;opacity:1;pointer-events:auto;}
  .nav-links a{padding:.8rem 0;border-bottom:1px solid var(--border);}
  .nav-links a.nav-cta{margin-top:.7rem;text-align:center;border-bottom:none;}
  .site-nav{position:sticky;}
  .nav-inner{position:relative;}
  .hero{padding:4rem 0 3rem;}
  .metrics{gap:1.6rem;}
  .footer-inner{flex-direction:column;text-align:center;gap:.8rem;}
}

@media (max-width: 480px){
  .wrap{padding:0 1.1rem;}
  .metric-n{font-size:1.6rem;}
  .email-btn{min-width:0;width:100%;}
}

/* No-JS fallback: <html class="no-js"> is set in markup and removed by an inline
   head script when JS runs. So .no-js only matches when JS is disabled — in that
   case reveal the menu (the toggle is non-functional, so hide it) instead of
   leaving the links collapsed and unreachable. Scoped to mobile widths so wide
   layouts are unaffected. */
@media (max-width: 820px){
  .no-js .nav-toggle{display:none;}
  .no-js .nav-links{position:static;max-height:none;opacity:1;pointer-events:auto;}
}