/* =============================================================
   NAVBAR.CSS — Sticky Navigation, Mobile Menu, Toast, Cart
   ============================================================= */

/* ─── NAVBAR ─── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding-block: var(--space-4);
  transition: background var(--transition-base),
              padding var(--transition-base),
              box-shadow var(--transition-base);
}

/* Scrolled state (added by JS) */
.navbar--scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  padding-block: var(--space-3);
  box-shadow: 0 1px 0 var(--border-color);
}

/* Active section highlight */
.navbar--scrolled .navbar__link.active {
  color: var(--color-accent);
}

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

.navbar__logo {
  flex-shrink: 0;
}

/* ─── NAV LINKS ─── */
.navbar__nav {
  flex: 1;
}

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

.navbar__link {
  font-family: var(--font-condensed);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding-bottom: 2px;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
  border-radius: var(--radius-full);
}

.navbar__link:hover,
.navbar__link.active {
  color: var(--color-white);
}

.navbar__link:hover::after,
.navbar__link.active::after {
  width: 100%;
}

/* ─── NAVBAR ACTIONS ─── */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-left: auto;
}

.navbar__icon {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: var(--fs-md);
  transition: color var(--transition-fast);
  width: 36px;
  height: 36px;
}

.navbar__icon:hover {
  color: var(--color-white);
}

/* Cart badge */
.cart-badge {
  position: absolute;
  top: -4px;
  right: -6px;
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-condensed);
  font-size: 10px;
  font-weight: var(--fw-bold);
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: transform var(--transition-spring);
}

.cart-badge--bump {
  transform: scale(1.5);
}

.navbar__cta {
  padding: var(--space-2) var(--space-5);
  font-size: var(--fs-xs);
}

/* ─── HAMBURGER ─── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.hamburger:hover {
  background: rgba(255,255,255,0.08);
}

.hamburger span {
  display: block;
  height: 2px;
  background: var(--color-white);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
  transform-origin: center;
}

.hamburger span:nth-child(3) {
  width: 65%;
}

/* Open state */
.hamburger.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.is-open span:nth-child(3) {
  width: 100%;
  transform: translateY(-7px) rotate(-45deg);
}

/* ─── MOBILE MENU ─── */
.mobile-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(10, 10, 10, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-slow);
}

.mobile-menu.is-open {
  max-height: 500px;
}

.mobile-menu__links {
  padding: var(--space-6) var(--container-px) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-menu__link {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  letter-spacing: var(--ls-tight);
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: var(--space-2) 0;
  transition: color var(--transition-fast), transform var(--transition-fast);
  border-bottom: 1px solid transparent;
}

.mobile-menu__link:hover {
  color: var(--color-white);
  transform: translateX(8px);
}

.mobile-menu__footer {
  padding: var(--space-4) var(--container-px) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  border-top: 1px solid var(--border-color);
}

.mobile-menu__socials {
  display: flex;
  gap: var(--space-3);
}

/* ─── MOBILE BACKDROP ─── */
.mobile-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: calc(var(--z-sticky) - 1);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-backdrop.is-visible {
  display: block;
  opacity: 1;
}

/* ─── TOAST NOTIFICATIONS ─── */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  background: var(--color-dark-2);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-family: var(--font-condensed);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  letter-spacing: 0.04em;
  color: var(--text-primary);
  pointer-events: all;
  min-width: 260px;
  max-width: 340px;

  /* Entrance animation */
  animation: toastIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.toast--success { border-left-color: #22c55e; }
.toast--error   { border-left-color: #ef4444; }
.toast--info    { border-left-color: var(--color-neon); }

.toast__icon {
  font-size: var(--fs-md);
  flex-shrink: 0;
}

.toast--success .toast__icon { color: #22c55e; }
.toast--error   .toast__icon { color: #ef4444; }
.toast--info    .toast__icon { color: var(--color-neon); }
.toast--default .toast__icon { color: var(--color-accent); }

.toast__close {
  margin-left: auto;
  color: var(--text-muted);
  font-size: var(--fs-xs);
  transition: color var(--transition-fast);
  cursor: pointer;
  flex-shrink: 0;
}

.toast__close:hover {
  color: var(--color-white);
}

.toast--hiding {
  animation: toastOut 0.25s ease forwards;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateX(40px) scale(0.95);
  }
}

/* ─── ADD TO CART BUTTON (inside look cards) ─── */
.look__add-cart {
  width: 100%;
  justify-content: center;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-xs);
}

/* ─── HIDE NAVBAR CTA ON MOBILE ─── */
@media (max-width: 768px) {
  .navbar__cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .navbar__nav {
    display: none;
  }
}

@media (max-width: 480px) {
  .toast-container {
    bottom: var(--space-4);
    right: var(--space-4);
    left: var(--space-4);
  }

  .toast {
    min-width: unset;
    max-width: 100%;
  }
}