/* ═══════════════════════════════════════════
   LAYOUT — Nav + Footer + Common
   ═══════════════════════════════════════════ */

/* ── Navigation ── */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  padding-inline: var(--nav-padding-x);
  display: flex;
  align-items: center;
  transition: background var(--duration-normal) var(--ease-out),
              backdrop-filter var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out),
              height var(--duration-normal) var(--ease-out);
}

.site-nav.is-scrolled {
  background: var(--glass-nav-bg);
  backdrop-filter: blur(var(--glass-nav-blur));
  -webkit-backdrop-filter: blur(var(--glass-nav-blur));
  border-bottom: var(--glass-nav-border);
  box-shadow: var(--glass-nav-shadow);
  height: 60px;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo-img {
  height: 32px;
  width: auto;
  transition: height var(--duration-normal) var(--ease-out);
}

.site-nav.is-scrolled .nav-logo-img {
  height: 26px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  font-family: var(--font-body);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
  padding: var(--space-2) 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav-link:hover {
  color: var(--color-text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

/* ── Hamburger (mobile) ── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  padding: 12px;
  cursor: pointer;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--duration-normal) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
}

.nav-hamburger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-hamburger.is-open span:nth-child(2) {
  opacity: 0;
}
.nav-hamburger.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile Menu Overlay ── */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: var(--space-16) var(--section-padding-x);
  background: var(--glass-modal-bg);
  backdrop-filter: blur(var(--glass-modal-blur));
  -webkit-backdrop-filter: blur(var(--glass-modal-blur));
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-slow) var(--ease-out);
}

.mobile-menu.is-open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu .mobile-menu-link {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  padding: var(--space-4) 0;
  display: block;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity var(--duration-normal) var(--ease-smooth),
              transform var(--duration-normal) var(--ease-smooth),
              color var(--duration-fast) var(--ease-out);
}

.mobile-menu.is-open .mobile-menu-link {
  opacity: 1;
  transform: translateX(0);
}

.mobile-menu-link:hover {
  color: var(--color-accent);
}

/* ── Section Base ── */
.section {
  position: relative;
  padding-block: var(--section-gap);
}

.section__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--section-padding-x);
}

/* ── Atmosphere Glows ── */
.glow-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse 60% 50% at 70% 40%, rgba(45,122,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.glow-stats::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(45,122,255,0.04) 0%, transparent 60%);
  pointer-events: none;
}

.glow-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 60%, rgba(212,168,67,0.05) 0%, transparent 50%);
  pointer-events: none;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .site-nav {
    height: var(--nav-height-mobile);
  }
  .site-nav.is-scrolled {
    height: var(--nav-height-mobile);
  }
  .nav-links {
    display: none;
  }
  .nav-hamburger {
    display: flex;
  }
}