/* ARISE Coffee — navigation + scroll progress bar */

/* ---------- NAV ---------- */
.nav{
  position:fixed;
  top:0; left:0; right:0;
  z-index:50;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 28px 5vw;
  transition: background .5s ease, padding .4s ease, border-color .5s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled{
  background: rgba(8,23,34,0.86);
  backdrop-filter: blur(10px);
  padding: 16px 5vw;
  border-bottom: 1px solid rgba(143,164,179,0.18);
}

.nav-mark{
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: 0.14em;
  font-weight: 500;
}

.nav-links{
  display:flex;
  gap: clamp(20px, 3vw, 44px);
  list-style:none;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.nav-links a{
  position:relative;
  padding-bottom: 4px;
  color: var(--frost);
  transition: color .3s ease;
}
.nav-links a::after{
  content:'';
  position:absolute;
  left:0; bottom:0;
  width:100%; height:1px;
  background: var(--ivory);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .4s cubic-bezier(.4,0,.2,1);
}
.nav-links a:hover,
.nav-links a:focus-visible{ color: var(--ivory); }
.nav-links a:hover::after,
.nav-links a:focus-visible::after{ transform: scaleX(1); transform-origin: left; }
.nav-links a:focus-visible{ outline: 1px solid var(--frost); outline-offset: 4px; }


/* ---------- SCROLL PROGRESS ---------- */
.scroll-progress-track{
  position:fixed;
  top:0; left:0; right:0;
  height:2px;
  background: rgba(143,164,179,0.22);
  z-index:60;
}
.scroll-progress-bar{
  height:100%;
  width:0%;
  background: linear-gradient(90deg, var(--frost), var(--ivory));
  box-shadow: 0 0 6px rgba(249,250,245,0.5);
}

.nav-links a.active{ color: var(--ivory); }
.nav-links a.active::after{ transform: scaleX(1); transform-origin:left; }