/* Site header shared by the home, Team, Privacy and Terms pages. Uses each page's theme variables. */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  /* The bar spans the window; its content lines up with the 1200px page column, like the footer. */
  padding: 4px max(40px, calc((100% - 1200px) / 2 + 48px));
  height: 56px;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--nav-bg);
  backdrop-filter: blur(40px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 22px; letter-spacing: -0.5px; color: var(--text);
  text-decoration: none;
}
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 20px; align-items: center; }
.nav-links a {
  color: var(--text-dim); text-decoration: none; font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 400; letter-spacing: -0.01em; transition: color 0.3s;
  position: relative;
}
.nav-links a:not(.btn-nav)::before,
.nav-links a:not(.btn-nav)::after {
  display: inline-block; opacity: 0; transition: opacity 0.25s, transform 0.25s;
  color: var(--accent);
}
.nav-links a:not(.btn-nav)::before { content: '['; margin-right: 0; transform: translateX(4px); }
.nav-links a:not(.btn-nav)::after { content: ']'; margin-left: 0; transform: translateX(-4px); }
.nav-links a:not(.btn-nav):hover::before,
.nav-links a:not(.btn-nav):hover::after { opacity: 1; transform: translateX(0); }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }
.btn-nav {
  border: 0.5px solid var(--border); color: var(--text-dim);
  background: transparent;
  padding: 7px 20px; border-radius: 4px; font-weight: 400;
  font-size: 13px; letter-spacing: 0;
  text-decoration: none; transition: all 0.3s;
  text-transform: none;
}
.btn-nav:hover { border-color: var(--accent); color: var(--accent); }
.hamburger {
  display: none; background: none; border: none; color: var(--text);
  font-size: 24px; cursor: pointer;
}

/* Theme switch */
.theme-toggle {
  display: flex; align-items: center;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 8px; overflow: hidden;
}
.theme-toggle button {
  background: none; border: none; color: var(--text-muted);
  padding: 7px 10px; font-size: 14px; cursor: pointer;
  transition: all 0.25s; line-height: 1;
}
.theme-toggle button:hover { color: var(--text); }
.theme-toggle button.active { color: var(--accent); background: var(--accent-glow); }

/* Dropdowns (Products, Company): a nav item that opens a short list of links. */
.nav-menu { position: relative; display: flex; align-items: center; }
.nav-menu-button {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 0; border: 0; background: none; cursor: pointer;
  color: var(--text-dim); font-size: 14px; font-family: 'JetBrains Mono', monospace;
  font-weight: 400; letter-spacing: -0.01em; transition: color 0.3s;
}
.nav-menu-button:hover, .nav-menu-button[aria-expanded="true"] { color: var(--text); }
.nav-menu-button svg { width: 12px; height: 12px; transition: transform 0.2s; }
.nav-menu-button[aria-expanded="true"] svg { transform: rotate(180deg); }
.nav-menu-panel {
  position: absolute; top: calc(100% + 18px); left: -14px; z-index: 110;
  display: flex; flex-direction: column; gap: 2px; min-width: 168px; padding: 8px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
  animation: nav-menu-slide 160ms ease-out;
}
.nav-menu-panel[hidden] { display: none; }
/* Bridges the gap under the button so moving the pointer down keeps a hover-opened menu open. */
.nav-menu-panel::before { content: ''; position: absolute; left: 0; right: 0; top: -19px; height: 19px; }
@keyframes nav-menu-slide {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .nav-menu-panel { animation: none; }
}
.nav-menu-panel a { padding: 8px 6px; border-radius: 4px; }

/* Phones: the links fold into the hamburger menu, dropdown links inline. */
@media (max-width: 900px) {
  nav { padding: 14px 20px; }
  .nav-links { display: none; }
  .hamburger { display: block; }
  .nav-links.mobile-open {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg-card); padding: 20px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.mobile-open .nav-menu { flex-direction: column; align-items: center; gap: 20px; }
  .nav-links.mobile-open .nav-menu-button { display: none; }
  .nav-links.mobile-open .nav-menu-panel,
  .nav-links.mobile-open .nav-menu-panel[hidden] {
    position: static; display: flex; align-items: center; gap: 20px; min-width: 0; padding: 0;
    background: none; border: 0; box-shadow: none; animation: none;
  }
  .nav-links.mobile-open .nav-menu-panel::before { display: none; }
  .nav-links.mobile-open .nav-menu-panel a { padding: 0; }
}