/* ===============================================
   SMOOTH SCROLL
   =============================================== */
html {
  scroll-behavior: smooth;
}

/* ===============================================
   SCROLL PROGRESS BAR
   =============================================== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary), var(--color-primary-light));
  z-index: 10001;
  transition: width 0.05s linear;
  box-shadow: 0 0 8px rgba(255, 144, 0, 0.5);
}

/* ===============================================
   GLASSMORPHISM NAVBAR
   =============================================== */
.glass-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10000;
  transform: translateY(-100%);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              background 0.3s ease,
              box-shadow 0.3s ease;
}

.glass-nav.visible {
  transform: translateY(0);
  opacity: 1;
}

.glass-nav.scrolled {
  background: rgba(16, 21, 27, 0.72);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

.glass-nav__inner {
  max-width: 1170px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

/* Brand */
.glass-nav__brand {
  font-family: "Kaushan Script", cursive;
  font-size: 24px;
  color: #fff;
  text-decoration: none;
  letter-spacing: 1px;
  transition: color 0.3s ease, transform 0.3s ease;
}

.glass-nav__brand:hover {
  color: var(--color-primary);
  text-decoration: none;
  transform: scale(1.05);
}

/* Nav Links */
.glass-nav__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.glass-nav__link {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color 0.25s ease, background 0.25s ease;
  position: relative;
}

.glass-nav__link:hover,
.glass-nav__link:focus {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  text-decoration: none;
}

.glass-nav__link.active {
  color: var(--color-primary);
  background: rgba(255, 107, 0, 0.1);
}

/* Mobile Toggle */
.glass-nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.glass-nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.glass-nav__toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.glass-nav__toggle.open span:nth-child(2) {
  opacity: 0;
}

.glass-nav__toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===============================================
   RESPONSIVE
   =============================================== */
@media screen and (max-width: 768px) {
  .glass-nav__toggle {
    display: flex;
  }

  .glass-nav__links {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(16, 21, 27, 0.92);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 12px 0;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                opacity 0.3s ease,
                padding 0.3s ease;
  }

  .glass-nav__links.open {
    max-height: 400px;
    opacity: 1;
    padding: 12px 0;
  }

  .glass-nav__link {
    display: block;
    padding: 12px 24px;
    font-size: 14px;
    border-radius: 0;
  }

  .glass-nav__link:hover,
  .glass-nav__link.active {
    background: rgba(255, 107, 0, 0.08);
  }
}