/* ============================================================
   nav.css — Alchemy Stones Matrix
   Header / Navigation shared styles

   NEW PAGE ME USE KARNA:
   1. <head> me link karo: <link rel="stylesheet" href="nav.css">
   2. Google Fonts bhi <head> me honi chahiye (Playfair + Montserrat)
   3. Nav HTML snippet paste karo (body ka pehla element)
   4. <script src="nav.js"> </body> se pehle add karo
   ============================================================ */

/* ---------- CSS Variables (safe to redeclare) ---------- */
:root {
  --navy: #1A3A5C;
  --steel: #275683;
  --glow: #7AA9D6;
  --charcoal: #1F1F1F;
  --pad-x: clamp(24px, 5vw, 96px);
  --serif: 'Playfair Display', 'Times New Roman', serif;
  --sans: 'Montserrat', system-ui, sans-serif;
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ---------- Button (only what nav needs) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 14px 28px;
  text-decoration: none;
  transition: background 350ms var(--ease-smooth), color 350ms var(--ease-smooth);
  cursor: pointer;
}

.btn--primary {
  background: var(--navy);
  color: #fff;
}

.btn--primary:hover {
  background: #0F2940;
}

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 80px;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-x);
  background: transparent;
  transition: background 400ms var(--ease-smooth),
    backdrop-filter 400ms var(--ease-smooth),
    border-color 400ms var(--ease-smooth);
  border-bottom: 1px solid transparent;
  opacity: 1;
  /* visible by default; homepage overrides via GSAP */
}

.nav.is-scrolled {
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom-color: rgba(91, 123, 154, 0.25);
}

.nav.is-dark {
  border-bottom-color: rgba(122, 169, 214, 0.2);
}

.nav.is-dark .nav__logo-name,
.nav.is-dark .nav__links a {
  color: #fff;
}

.nav.is-dark .btn--primary {
  background: #fff;
  color: var(--navy);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 48px;
}

.nav__logo-name {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--navy);
  line-height: 1.05;
  display: block;
}

/* Desktop links */
.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav__links a {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--charcoal);
  text-transform: uppercase;
  position: relative;
  padding: 6px 0;
  text-decoration: none;
}

.nav__links a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--steel);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 250ms var(--ease-smooth);
}

.nav__links a:hover::after {
  transform: scaleX(1);
}

/* ---------- Projects Dropdown ---------- */
.dropdown-container {
  position: relative;
  display: inline-block;
}

.dropdown-arrow {
  transition: transform 0.3s ease;
  width: 10px;
  height: 10px;
  margin-left: 5px;
  vertical-align: middle;
}

.dropdown-container:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu-custom {
  position: absolute;
  top: calc(100% + 12px);
  left: -20px;
  min-width: 260px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.25s ease;
  z-index: 1000;
  border: 1px solid rgba(91, 123, 154, 0.15);
}

.dropdown-container:hover .dropdown-menu-custom {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu-custom a {
  display: block;
  padding: 12px 20px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  color: #2c3e4e;
  text-decoration: none;
  transition: all 0.2s ease;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.dropdown-menu-custom a:last-child {
  border-bottom: none;
}

.dropdown-menu-custom a:hover {
  background: rgba(26, 58, 92, 0.06);
  color: #1A3A5C;
  padding-left: 28px;
}

.nav.is-dark .dropdown-menu-custom {
  background: rgba(13, 31, 53, 0.98);
  backdrop-filter: blur(12px);
  border-color: rgba(122, 169, 214, 0.2);
}

.nav.is-dark .dropdown-menu-custom a {
  color: rgba(255, 255, 255, 0.85);
}

.nav.is-dark .dropdown-menu-custom a:hover {
  background: rgba(122, 169, 214, 0.12);
  color: #7AA9D6;
}

/* ---------- Hamburger ---------- */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  z-index: 95;
  flex-shrink: 0;
}

.nav__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--navy);
  border-radius: 1px;
  transition: transform 300ms var(--ease-smooth), opacity 300ms var(--ease-smooth);
}

.nav.is-dark .nav__hamburger span {
  background: #fff;
}

.nav__hamburger.is-open span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.nav__hamburger.is-open span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger.is-open span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ---------- Mobile Menu ---------- */
.nav__mobile-menu {
  position: fixed;
  inset: 0;
  background: #fff;
  z-index: 82;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 80px 32px 40px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-16px);
  transition: opacity 350ms var(--ease-smooth), transform 350ms var(--ease-smooth);
}

.nav__mobile-menu.is-open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.nav__mobile-menu a:not(.btn) {
  font-family: var(--serif);
  font-size: clamp(26px, 7vw, 42px);
  color: rgb(54, 64, 117);
  text-align: center;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color 200ms;
}

.nav__mobile-menu a:not(.btn):hover {
  color: var(--glow);
}

.nav__mobile-menu .btn {
  margin-top: 8px;
  background: var(--navy);
  color: #fff;
  font-size: 13px;
  padding: 14px 28px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .nav__links {
    display: none;
  }

  .nav>.btn--primary {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }
}

/* ============================================================
   NAV HTML SNIPPET — naye page me yeh paste karo:

   <!-- Google Fonts (head me) -->
   <link rel="preconnect" href="https://fonts.googleapis.com">
   <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
   <link href="https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;1,400;1,500&family=Montserrat:wght@400;500;600;700&display=swap" rel="stylesheet">
   <link rel="stylesheet" href="nav.css">

   <!-- Body ka pehla element -->
   <nav class="nav" style="opacity:1;">
     <a href="./Alchemy Awwwards Homepage.html" class="nav__logo">
       <img src="./uploads/logog.png" alt="" class="logo--light" style="height:60px;">
     </a>
     <div class="nav__links">
       <a href="./AboutUs.html">About</a>
       <a href="./Alchemy Awwwards Homepage.html#building">Mining</a>
       <a href="./products.html">Products</a>
       <a id="projects-drop" href="./Alchemy Awwwards Homepage.html#legacy">Projects</a>
       <a href="./gallery.html">Gallery</a>
       <a href="#contact">Contact</a>
     </div>
     <a href="#contact" class="btn btn--primary">Contact Us</a>
     <button class="nav__hamburger" aria-label="Toggle menu" aria-expanded="false">
       <span></span><span></span><span></span>
     </button>
   </nav>
   <div class="nav__mobile-menu">
     <a href="./AboutUs.html">About</a>
     <a href="./Alchemy Awwwards Homepage.html#building">Mining</a>
     <a href="./products.html">Products</a>
     <a href="./Alchemy Awwwards Homepage.html#legacy">Projects</a>
     <a href="./gallery.html">Gallery</a>
     <a href="#contact">Contact</a>
     <a href="#contact" class="btn btn--primary">Contact Us</a>
   </div>

   <!-- </body> se pehle -->
   <script src="nav.js"></script>
   ============================================================ */