/* ============================================
   COMPONENTS — Nav, buttons, cards, badges
   ============================================ */

/* ════════════════════════════════════════════
   NAVIGATION
   ════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 var(--gutter);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: background var(--duration-base) ease;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: var(--fw-bold);
  color: var(--color-white);
  letter-spacing: var(--ls-tight);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav__logo-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--color-accent), #66b8ff);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav__link {
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: var(--color-silver);
  transition: color var(--duration-fast) ease;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--duration-base) var(--ease-out-expo);
}

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

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

.nav__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav__cart {
  position: relative;
  cursor: pointer;
  color: var(--color-silver);
  transition: color var(--duration-fast) ease;
}

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

.nav__cart-count {
  position: absolute;
  top: -6px;
  right: -8px;
  width: 16px;
  height: 16px;
  background: var(--color-accent);
  border-radius: 50%;
  font-size: 0.6rem;
  font-weight: var(--fw-bold);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.nav__hamburger span {
  width: 20px;
  height: 1.5px;
  background: var(--color-frost);
  border-radius: 2px;
  transition: all var(--duration-base) var(--ease-out-expo);
}

/* ════════════════════════════════════════════
   BUTTONS
   ════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out-expo);
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn--primary:hover {
  background: var(--color-accent-deep);
  transform: scale(1.04);
  box-shadow: var(--shadow-glow);
  color: var(--color-white);
}

.btn--ghost {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid rgba(41, 151, 255, 0.3);
}

.btn--ghost:hover {
  background: var(--color-accent-glow);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--glass {
  background: var(--glass-bg);
  color: var(--color-frost);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(var(--glass-blur));
}

.btn--glass:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
}

.btn--large {
  padding: 1rem 2.5rem;
  font-size: var(--fs-body);
}

.btn__arrow {
  transition: transform var(--duration-base) var(--ease-out-expo);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* ════════════════════════════════════════════
   PRODUCT CARDS
   ════════════════════════════════════════════ */
.card {
  position: relative;
  background: linear-gradient(145deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-slow) var(--ease-out-expo);
  cursor: pointer;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(41, 151, 255, 0.06),
    transparent 40%
  );
  opacity: 0;
  transition: opacity var(--duration-base) ease;
  z-index: 1;
  pointer-events: none;
}

.card:hover::before {
  opacity: 1;
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-8px);
  box-shadow: var(--shadow-heavy);
}

.card__image-wrap {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, rgba(41,151,255,0.04) 0%, transparent 70%);
}

.card__3d-object {
  width: 65%;
  height: 65%;
  perspective: 800px;
}

.card__3d-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.card:hover .card__3d-inner {
  transform: rotateY(-12deg) rotateX(5deg);
}

.card__3d-face {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  backface-visibility: hidden;
}

.card__3d-face--front {
  background: linear-gradient(135deg, var(--color-graphite), var(--color-carbon));
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}

.card__3d-face--side {
  background: var(--color-graphite);
  width: 12px;
  left: auto;
  right: -6px;
  transform: rotateY(90deg) translateZ(6px);
}

.card__tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.3rem 0.75rem;
  font-size: var(--fs-micro);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-full);
  z-index: 2;
}

.card__body {
  padding: 1.5rem;
  position: relative;
  z-index: 2;
}

.card__category {
  font-size: var(--fs-micro);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: var(--fw-semibold);
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

.card__desc {
  font-size: var(--fs-small);
  color: var(--color-titanium);
  line-height: var(--lh-body);
  margin-bottom: 1.25rem;
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card__price {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  font-weight: var(--fw-semibold);
  color: var(--color-white);
}

.card__price-old {
  font-size: var(--fs-small);
  color: var(--color-steel);
  text-decoration: line-through;
  margin-left: 0.5rem;
  font-weight: var(--fw-regular);
}

/* ════════════════════════════════════════════
   BADGE / CHIP
   ════════════════════════════════════════════ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.9rem;
  font-size: var(--fs-micro);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--color-titanium);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  backdrop-filter: blur(10px);
}

.chip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ════════════════════════════════════════════
   SPEC GRID
   ════════════════════════════════════════════ */
.spec-item {
  padding: 1.5rem;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  text-align: center;
  transition: all var(--duration-base) var(--ease-out-expo);
}

.spec-item:hover {
  border-color: rgba(41, 151, 255, 0.2);
  background: rgba(41, 151, 255, 0.04);
  transform: translateY(-4px);
}

.spec-item__icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.spec-item__value {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: var(--fw-bold);
  color: var(--color-white);
  margin-bottom: 0.25rem;
}

.spec-item__label {
  font-size: var(--fs-small);
  color: var(--color-titanium);
}

/* ════════════════════════════════════════════
   FEATURE ROW
   ════════════════════════════════════════════ */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
  padding: var(--section-padding) 0;
}

.feature-row--reverse {
  direction: rtl;
}

.feature-row--reverse > * {
  direction: ltr;
}

.feature-row__visual {
  position: relative;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-row__content {
  max-width: 500px;
}

.feature-row__eyebrow {
  font-size: var(--fs-micro);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-ultra);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.feature-row__title {
  font-size: var(--fs-h1);
  margin-bottom: 1.25rem;
}

.feature-row__text {
  color: var(--color-titanium);
  margin-bottom: 2rem;
  line-height: var(--lh-body);
}

/* ════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════ */
.footer {
  padding: var(--space-xl) 0 var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.04);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.footer__brand-desc {
  font-size: var(--fs-small);
  color: var(--color-steel);
  margin-top: 1rem;
  max-width: 300px;
  line-height: var(--lh-body);
}

.footer__heading {
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  color: var(--color-silver);
  margin-bottom: 1.25rem;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
}

.footer__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer__list a {
  font-size: var(--fs-small);
  color: var(--color-steel);
  transition: color var(--duration-fast) ease;
}

.footer__list a:hover {
  color: var(--color-frost);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255,255,255,0.04);
}

.footer__copy {
  font-size: var(--fs-micro);
  color: var(--color-steel);
}

.footer__socials {
  display: flex;
  gap: 1rem;
}

.footer__social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-titanium);
  font-size: 0.85rem;
  transition: all var(--duration-fast) ease;
}

.footer__social-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-glow);
}