/* ═══════════════════════════════════════════════════
   COMPONENTS — Reusable UI Elements
   ═══════════════════════════════════════════════════ */

/* ─── Loader ─── */
.loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease-out-expo), visibility 0.6s;
}

.loader--hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
}

.loader__logo {
  animation: loaderPulse 2s ease-in-out infinite;
}

.loader__icon {
  width: 64px;
  height: 64px;
}

.loader__progress {
  width: 120px;
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.loader__bar {
  width: 0%;
  height: 100%;
  background: var(--gradient-brand);
  border-radius: var(--radius-full);
  transition: width 0.4s var(--ease-out-expo);
}

@keyframes loaderPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.8; }
}

/* ─── Navigation ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-4) 0;
  transition: all var(--duration-base) var(--ease-in-out);
}

.nav--scrolled {
  padding: var(--space-3) 0;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-primary);
}

.nav__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 800;
  font-size: var(--text-xl);
  letter-spacing: var(--tracking-tight);
  z-index: var(--z-overlay);
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
}

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

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-in-out);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: var(--radius-full);
  transition: width var(--duration-base) var(--ease-out-expo);
}

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

.nav__link:hover::after {
  width: 100%;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  z-index: var(--z-overlay);
}

/* Mobile Menu Button */
.nav__menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  padding: 2px 0;
}

.nav__menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--duration-base) var(--ease-out-expo);
  transform-origin: center;
}

.nav__menu-btn--active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__menu-btn--active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__menu-btn--active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(30px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-slow) var(--ease-out-expo);
}

.mobile-menu--open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  transform: translateY(20px);
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.mobile-menu--open .mobile-menu__content {
  transform: translateY(0);
}

.mobile-menu__link {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

.mobile-menu__link:hover {
  color: var(--text-primary);
}

.mobile-menu__cta {
  margin-top: var(--space-8);
}