/* =========================================================
UltraSapiens Core Design System
Foundation Layer
========================================================= */

:root {

  --bg-primary:#07080b;
  --bg-secondary:#0f1116;
  --bg-tertiary:#151820;

  --text-primary:#f4f7fb;
  --text-secondary:#9ca4b5;
  --text-muted:#6c7382;

  --accent-primary:#2ed3c6;
  --accent-secondary:#5da9ff;

  --border-subtle:rgba(255,255,255,0.06);
  --border-strong:rgba(255,255,255,0.14);

  --font-main:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI",Roboto,sans-serif;

  --radius-sm:6px;
  --radius-md:10px;
  --radius-lg:18px;

  --container:1280px;

  --transition-fast:120ms ease;
  --transition-normal:260ms ease;

}

/* =========================================================
RESET
========================================================= */

*,
*::before,
*::after{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:var(--font-main);
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

/* =========================================================
SELECTION
========================================================= */

::selection{
  background:rgba(46,211,198,0.35);
  color:#ffffff;
}

/* =========================================================
ACCESSIBILITY
========================================================= */

.visually-hidden{
  position:absolute!important;
  height:1px;
  width:1px;
  overflow:hidden;
  clip:rect(1px,1px,1px,1px);
  white-space:nowrap;
}

/* =========================================================
SKIP LINK
========================================================= */

.skip-link{
  position:absolute;
  top:-40px;
  left:20px;
  background:#000;
  color:#fff;
  padding:10px 14px;
  border-radius:6px;
  font-size:14px;
  z-index:999;
  transition:top 160ms ease;
}

.skip-link:focus{
  top:16px;
}

/* =========================================================
CONTAINER
========================================================= */

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

/* =========================================================
NAVIGATION
========================================================= */

.site-header{

  position:sticky;
  top:0;
  z-index:100;

  backdrop-filter:blur(18px);

  background:
  linear-gradient(
  to bottom,
  rgba(7,8,11,0.85),
  rgba(7,8,11,0.65)
  );

  border-bottom:1px solid var(--border-subtle);

}

.site-nav{

  display:flex;
  align-items:center;
  justify-content:space-between;

  height:72px;

}

.nav-logo{

  font-weight:600;
  letter-spacing:-0.02em;

  font-size:18px;

}

.nav-logo{
  display:flex;
  align-items:center;
  gap:10px;
}

.nav-logo__image{
  height:46px;
  width:auto;
  display:block;
  transition:opacity 180ms ease, transform 180ms ease;
}

.nav-logo:hover .nav-logo__image{
  opacity:0.9;
  transform:translateY(-1px);
}

.nav-links{

  display:flex;
  gap:28px;

}

.nav-links a{

  position:relative;

  color:var(--text-secondary);
  text-decoration:none;

  font-size:14px;

  transition:color var(--transition-fast);

}

.nav-links a:hover{
  color:var(--text-primary);
}

/* active nav */

.nav-links a[aria-current="page"]{
  color:var(--text-primary);
}

.nav-links a[aria-current="page"]::after{

  content:"";
  position:absolute;
  left:0;
  bottom:-6px;

  width:100%;
  height:1px;

  background:var(--accent-primary);

}

/* subtle underline hover */

.nav-links a::before{

  content:"";
  position:absolute;

  bottom:-6px;
  left:0;

  width:0%;
  height:1px;

  background:var(--accent-primary);

  transition:width 220ms ease;

}

.nav-links a:hover::before{
  width:100%;
}

/* =========================================================
FOCUS STATES
========================================================= */

a:focus-visible,
button:focus-visible{

  outline:2px solid var(--accent-primary);
  outline-offset:3px;

}

/* =========================================================
BUTTONS
========================================================= */

.button{

  display:inline-flex;
  align-items:center;
  justify-content:center;

  padding:14px 22px;

  border-radius:var(--radius-md);

  font-size:14px;
  font-weight:500;

  border:1px solid transparent;

  cursor:pointer;

  transition:
  transform var(--transition-fast),
  background var(--transition-fast),
  border var(--transition-fast),
  color var(--transition-fast);

}

.button-primary{

  background:var(--accent-primary);
  color:#051617;

}

.button-primary:hover{

  transform:translateY(-1px);

  background:#39e2d3;

}

.button-secondary{

  border:1px solid var(--border-strong);
  color:var(--text-primary);

}

.button-secondary:hover{

  border-color:var(--accent-primary);

  color:var(--accent-primary);

}

/* =========================================================
SECTIONS
========================================================= */

.section{

  padding:120px 0;

}

.section-title{

  font-size:36px;
  letter-spacing:-0.02em;

  margin-bottom:16px;

}

.section-text{

  max-width:760px;

  color:var(--text-secondary);

}

/* =========================================================
CARDS
========================================================= */

.card{

  background:var(--bg-secondary);

  border:1px solid var(--border-subtle);

  border-radius:var(--radius-lg);

  padding:28px;

  transition:
  border var(--transition-normal),
  transform var(--transition-normal);

}

.card:hover{

  transform:translateY(-4px);

  border-color:var(--border-strong);

}

/* =========================================================
FOOTER
========================================================= */

.site-footer{

  padding:60px 0;

  border-top:1px solid var(--border-subtle);

  margin-top:120px;

  color:var(--text-muted);

  font-size:14px;

}

/* =========================================================
REVEAL ANIMATION
========================================================= */

.reveal{
  opacity:1;
  transform:none;
}

.js-animate .reveal{
  opacity:0;
  transform:translateY(20px);
  transition:
  opacity 700ms ease,
  transform 700ms ease;
}

.js-animate .reveal.is-visible{
  opacity:1;
  transform:none;
}

/* =========================================================
RESPONSIVE
========================================================= */

@media(max-width:900px){

  .nav-links{

    gap:18px;

  }

  .section{

    padding:96px 0;

  }

}

@media(max-width:640px){

  .container{
    padding:0 22px;
  }

  .nav-links{
    display:none;
  }

}

/* =========================================================
HEADER SCROLL STATE
========================================================= */

.site-header.is-scrolled {
  background:
    linear-gradient(
      to bottom,
      rgba(7,8,11,0.94),
      rgba(7,8,11,0.82)
    );
  border-bottom-color: rgba(255,255,255,0.09);
}

/* =========================================================
MOBILE TOGGLE
========================================================= */

.mobile-nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  background: rgba(255,255,255,0.02);
  color: var(--text-primary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast),
    transform var(--transition-fast);
}

.mobile-nav-toggle:hover {
  border-color: var(--border-strong);
  background: rgba(255,255,255,0.035);
}

.mobile-nav-toggle:active {
  transform: translateY(1px);
}

.mobile-nav-toggle__line {
  display: block;
  width: 18px;
  height: 1.5px;
  border-radius: 999px;
  background: currentColor;
  transition:
    transform var(--transition-normal),
    opacity var(--transition-normal);
}

.mobile-nav-toggle[aria-expanded="true"] .mobile-nav-toggle__line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.mobile-nav-toggle[aria-expanded="true"] .mobile-nav-toggle__line:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle[aria-expanded="true"] .mobile-nav-toggle__line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* =========================================================
MOBILE PANEL
========================================================= */

.mobile-nav-panel {
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid var(--border-subtle);
  background:
    linear-gradient(
      to bottom,
      rgba(10,12,16,0.96),
      rgba(10,12,16,0.9)
    );
  backdrop-filter: blur(18px);
}

.mobile-nav-panel[hidden] {
  display: none;
}

.mobile-nav-panel__inner {
  padding-top: 18px;
  padding-bottom: 22px;
}

.mobile-nav-links {
  display: grid;
  gap: 6px;
}

.mobile-nav-links a {
  display: block;
  padding: 12px 0;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 16px;
  line-height: 1.4;
  transition: color var(--transition-fast);
}

.mobile-nav-links a:hover {
  color: var(--text-primary);
}

.mobile-nav-links a[aria-current="page"] {
  color: var(--text-primary);
}

/* =========================================================
FOCUS VISIBLE POLISH
========================================================= */

.nav-links a:focus-visible,
.mobile-nav-links a:focus-visible,
.nav-logo:focus-visible,
.skip-link:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 4px;
  border-radius: 6px;
}

.mobile-nav-toggle:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 4px;
}

/* =========================================================
BODY LOCK WHEN MENU OPEN
========================================================= */

body.menu-open {
  overflow: hidden;
}

/* =========================================================
RESPONSIVE NAV REFINEMENT
========================================================= */

@media (max-width: 760px) {
  .site-nav {
    height: 68px;
  }

  .nav-links {
    display: none;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }
}

@media (min-width: 761px) {
  .mobile-nav-panel {
    display: none !important;
  }
}

/* =========================================================
404 PAGE
========================================================= */

.not-found-wrap {
  max-width: 760px;
  padding: 72px 0 48px;
}

.not-found-code {
  margin-bottom: 18px;
  font-family: "Space Grotesk", var(--font-main);
  font-size: 96px;
  line-height: 0.9;
  letter-spacing: -0.06em;
  font-weight: 600;
  color: var(--text-primary);
}

.not-found-label {
  margin: 0 0 18px;
  font-size: 12px;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.not-found-actions {
  margin-top: 30px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.not-found-links {
  margin-top: 28px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.not-found-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--transition-fast);
}

.not-found-links a:hover {
  color: var(--text-primary);
}

@media (max-width: 780px) {
  .not-found-wrap {
    padding: 36px 0 24px;
  }

  .not-found-code {
    font-size: 72px;
  }
}

@media (max-width: 520px) {
  .not-found-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* =========================================================
FOOTER REFINEMENTS
========================================================= */

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(160px, 1fr));
  gap: 28px;
  align-items: start;
}

.footer-brand__title {
  font-family: "Space Grotesk", var(--font-main);
  font-size: 24px;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.footer-brand__designation,
.footer-column__title {
  font-family: "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 12px;
  color: var(--text-muted);
}

.footer-brand__text {
  margin: 14px 0 0;
  max-width: 52ch;
  color: var(--text-secondary);
}

.footer-column {
  display: grid;
  gap: 10px;
}

.footer-column a,
.footer-column span {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-column a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  gap: 14px 24px;
  flex-wrap: wrap;
  color: var(--text-muted);
}

@media (max-width: 980px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}


/* ===== FINAL HOME POLISH OVERRIDES ===== */
.site-header{background:linear-gradient(to bottom, rgba(7,8,11,0.9), rgba(7,8,11,0.78));}
.nav-logo__image{height:48px;}
.section-title{font-size:clamp(2rem, 4vw, 2.6rem); line-height:1.08; letter-spacing:-0.03em;}
.section-text{font-size:clamp(1rem, 1.35vw, 1.125rem); line-height:1.72;}
.site-footer{padding:72px 0 28px; margin-top:96px; background:linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0));}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:28px;padding-bottom:28px;}
.footer-brand__title{font-family:"Space Grotesk", var(--font-main);font-size:clamp(1.4rem,2vw,1.8rem);font-weight:600;letter-spacing:-0.03em;color:var(--text-primary);margin-bottom:8px;}
.footer-brand__designation,.footer-column__title{font-family:"JetBrains Mono", monospace;text-transform:uppercase;letter-spacing:0.1em;font-size:11px;color:var(--text-muted);}
.footer-brand__designation{margin-bottom:14px;line-height:1.55;word-break:break-word;}
.footer-brand__text{max-width:52ch;color:var(--text-secondary);line-height:1.7;margin:0;}
.footer-column{display:flex;flex-direction:column;gap:10px;}
.footer-column a,.footer-column span{color:var(--text-secondary);text-decoration:none;line-height:1.6;}
.footer-column a:hover{color:var(--text-primary);}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;border-top:1px solid var(--border-subtle);color:var(--text-muted);font-size:13px;}
@media (max-width: 1024px){.footer-grid{grid-template-columns:1fr 1fr;}.site-footer{padding-top:64px;}}
@media (max-width: 720px){.container{padding:0 22px;}.site-nav{height:68px;}.footer-grid{grid-template-columns:1fr;gap:22px;}.footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}.site-footer{padding-top:56px;margin-top:72px;}}
@media (max-width: 420px){.container{padding:0 18px;}.button{width:100%;}}


/* ================= FINAL FOOTER + TYPE POLISH ================= */
.section-title { font-size: clamp(2rem, 4vw, 2.75rem); line-height: 1.02; letter-spacing: -0.035em; }
.section-text { font-size: 17px; line-height: 1.72; }
.site-footer {
  padding: 72px 0 34px;
  margin-top: 128px;
  background: linear-gradient(180deg, rgba(255,255,255,0.01), rgba(255,255,255,0.00));
}
@media (max-width: 640px) {
  .site-footer { padding-top: 56px; margin-top: 96px; }
}


/* ===== MAX PASS GLOBAL POLISH ===== */
.button{min-height:46px;padding:0 18px;font-weight:600;letter-spacing:-0.01em;}
.button-primary{box-shadow:0 10px 28px rgba(46,211,198,.14);}
.button-secondary{background:rgba(255,255,255,.02);}
.section{position:relative;}
.site-header{border-bottom:1px solid rgba(255,255,255,.05);}