/* ============================================================
   DESIGN SYSTEM — TheAIChemist.AU  (Shared Stylesheet)
   ============================================================ */

/* CSS VARIABLES
   ============================================================ */
:root {
  --navy:        #0b1628;
  --navy-mid:    #112040;
  --navy-light:  #1a3060;
  --teal:        #006d5b;
  --teal-light:  #00b896;
  --teal-glow:   rgba(0, 184, 150, 0.12);
  --gold:        #c8972c;
  --gold-light:  #e8b84b;
  --gold-glow:   rgba(200, 151, 44, 0.10);
  --cyan:        #22d3ee;
  --bg:          #f6f8fb;
  --bg-off:      #eef1f7;
  --surface:     #ffffff;
  --border:      #dde4f0;
  --border-mid:  #c4cedf;
  --text:        #1a2640;
  --text-mid:    #3a4e6a;
  --muted:       #7a8ca8;
  --muted-light: #a8b8cc;
  --amber:       #f59e0b;
  --indigo:      #818cf8;

  --ff-display: 'Cormorant Garamond', Georgia, serif;
  --ff-body:    'Outfit', system-ui, sans-serif;
  --ff-mono:    'JetBrains Mono', 'Courier New', monospace;

  --radius:     10px;
  --radius-lg:  20px;
  --nav-h:      58px;
  --transition: 0.25s ease;
}

/* RESET & BASE
   ============================================================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--ff-body);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--teal); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--teal-light); }

/* SITE NAV
   ============================================================ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: var(--navy);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  padding: 0 40px;
  z-index: 300;
  gap: 0;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo img { height: 32px; width: auto; }
.logo-text {
  font-family: var(--ff-display);
  font-size: 22px;
  font-weight: 600;
  color: #f0f4ff;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.logo-text em { color: var(--teal-light); font-style: normal; }
.nav-spacer { flex: 1; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  color: rgba(200,215,240,0.75);
  font-size: 13.5px;
  font-weight: 400;
  letter-spacing: 0.02em;
  padding: 6px 14px;
  border-radius: 6px;
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-links a:hover,
.nav-links a.active {
  color: #f0f4ff;
  background: rgba(255,255,255,0.07);
}
.nav-links a.active { color: var(--teal-light); }
.nav-cta {
  margin-left: 12px;
  background: var(--teal) !important;
  color: #fff !important;
  padding: 7px 18px !important;
  border-radius: 7px !important;
  font-weight: 500 !important;
}
.nav-cta:hover {
  background: var(--teal-light) !important;
  color: #fff !important;
}

/* MARKET INSIGHTS DROPDOWN
   ============================================================ */
.nav-dropdown { position: relative; }
.nav-submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #0f1726;
  border: 1px solid #1f2e4a;
  border-radius: 6px;
  min-width: 230px;
  padding: 8px 0 6px;
  z-index: 200;
  list-style: none;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.nav-dropdown:hover .nav-submenu,
.nav-dropdown:focus-within .nav-submenu { display: block; }
.nav-submenu li a {
  display: block;
  padding: 8px 16px;
  font-size: 13px;
  color: #8898bf;
  text-decoration: none;
  white-space: nowrap;
}
.nav-submenu li a:hover { color: #e8f0ff; background: rgba(255,255,255,0.04); }
.nav-submenu li a.active { color: var(--teal-light); }
@media (max-width: 680px) {
  .nav-submenu {
    position: static;
    display: block;
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0 0 0 16px;
  }
  .nav-submenu li a { padding: 6px 0; font-size: 12px; }
}

/* HAMBURGER TOGGLE
   ============================================================ */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
  transition: background var(--transition);
  flex-shrink: 0;
  margin-left: 8px;
}
.nav-toggle:hover { background: rgba(255,255,255,0.07); }
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: rgba(200,215,240,0.75);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* REVEAL ANIMATION
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1, .reveal-delay-1 { transition-delay: 0.1s; }
.reveal-d2, .reveal-delay-2 { transition-delay: 0.2s; }
.reveal-d3, .reveal-delay-3 { transition-delay: 0.3s; }

/* MOBILE NAV
   ============================================================ */
@media (max-width: 680px) {
  .site-nav { padding: 0 20px; }

  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--navy);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 20px;
    gap: 2px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 8px 24px rgba(0,0,0,0.35);
    z-index: 299;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 14px;
  }
  .nav-cta { margin-left: 0 !important; margin-top: 6px; }
}