/* ============================================================
   AxisEV — Components
   components.css: nav, buttons, overlays, mobile menu
   ============================================================ */

/* ── Navigation ── */
#main-nav {
  position: fixed;
  top: var(--promo-height);
  left: 0;
  right: 0;
  z-index: 110;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--container-pad);
  transition: background var(--duration-slow) var(--ease-out),
              box-shadow var(--duration-slow);
}

#main-nav.nav--transparent {
  background: transparent;
}

#main-nav.nav--scrolled {
  background: hsla(220, 30%, 8%, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--color-border);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  height: 100%;
  z-index: 2;
  color: var(--color-white);
  transition: color var(--duration-fast);
}
.nav__logo:hover { color: var(--color-primary); }

.nav__logo-svg {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.5px;
  line-height: 1;
}

.nav__logo-axis { color: var(--color-white); }
.nav__logo-ev   { color: var(--color-primary); }

/* Center nav links */
.nav__links {
  display: flex;
  align-items: center;
  gap: 0;
  height: 100%;
}

.nav__item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav__link {
  display: flex;
  align-items: center;
  height: 100%;
  padding-inline: var(--space-4);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-white-70);
  transition: color var(--duration-fast);
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.nav__link:hover,
.nav__item.active .nav__link {
  color: var(--color-white);
}

/* Right actions */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  z-index: 2;
}

.nav__action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  color: var(--color-white-70);
  transition: color var(--duration-fast), background var(--duration-fast);
  font-size: 13px;
  font-weight: 500;
}
.nav__action-btn:hover {
  color: var(--color-white);
  background: var(--color-white-08);
}

.nav__hamburger {
  flex-direction: column;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 10px 8px;
  display: none;
}
.nav__hamburger span {
  display: block;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-base);
  transform-origin: center;
}
.nav__hamburger.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav__hamburger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__hamburger.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Mobile Menu ── */
.nav__mobile-menu {
  position: fixed;
  inset: 0;
  top: calc(var(--promo-height) + var(--nav-height));
  background: var(--color-bg-2);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
  z-index: 100;
  padding: var(--space-8) var(--container-pad);
  overflow-y: auto;
}
.nav__mobile-menu.is-open {
  transform: translateX(0);
}

.nav__mobile-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav__mobile-link {
  display: block;
  padding: 14px 0;
  font-size: 20px;
  font-weight: 500;
  color: var(--color-white-70);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--duration-fast), padding-left var(--duration-fast);
  font-family: var(--font-display);
}
.nav__mobile-link:hover {
  color: var(--color-white);
  padding-left: var(--space-3);
}

.overlay {
  position: fixed;
  inset: 0;
  background: hsla(220, 30%, 4%, 0.7);
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-slow);
}
.overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.01em;
  transition: background var(--duration-fast), color var(--duration-fast),
              transform var(--duration-fast), box-shadow var(--duration-fast),
              border-color var(--duration-fast);
  cursor: pointer;
  white-space: nowrap;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}
.btn--primary:hover {
  background: var(--color-primary-glow);
  border-color: var(--color-primary-glow);
  box-shadow: var(--shadow-glow);
}

.btn--ghost {
  background: var(--color-white-08);
  color: var(--color-white);
  border-color: var(--color-white-15);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover {
  background: var(--color-white-15);
  border-color: var(--color-white-40);
}

.btn--secondary {
  background: transparent;
  color: var(--color-white-70);
  border-color: var(--color-border);
}
.btn--secondary:hover {
  background: var(--color-white-08);
  color: var(--color-white);
  border-color: var(--color-white-40);
}

.btn--sm {
  padding: 8px 18px;
  font-size: 13px;
}

.btn--full { width: 100%; }