/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.nav.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-extrabold);
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #333 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-lg);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text);
  background-color: var(--color-surface);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav__search-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.nav__search-btn:hover {
  background-color: var(--color-surface);
  color: var(--color-text);
}

.nav__menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: var(--z-overlay);
  padding: var(--space-6);
  flex-direction: column;
  gap: var(--space-2);
  overflow-y: auto;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-menu__link:hover,
.mobile-menu__link.active {
  background-color: var(--color-surface);
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  height: 70vh;
  min-height: 500px;
  max-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-dark-bg);
  overflow: hidden;
  margin-top: var(--nav-height);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.6;
  transition: opacity var(--transition-slow);
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.45) 0%, rgba(0,0,0,0.75) 100%);
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
  padding: 0 var(--space-6);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  margin-bottom: var(--space-6);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: var(--weight-extrabold);
  color: white;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-5);
  letter-spacing: -0.02em;
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

.hero__search {
  display: flex;
  align-items: center;
  max-width: 520px;
  margin: 0 auto;
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-xl);
  padding: var(--space-2);
  transition: all var(--transition-base);
}

.hero__search:focus-within {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-accent);
}

.hero__search input {
  flex: 1;
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-base);
  color: white;
  background: none;
  border: none;
}

.hero__search input::placeholder {
  color: rgba(255,255,255,0.5);
}

.hero__search button {
  padding: var(--space-3) var(--space-6);
  background-color: var(--color-accent);
  color: var(--color-dark-bg);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
}

.hero__search button:hover {
  background-color: var(--color-accent-hover);
}

.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.hero__stat {
  text-align: center;
}

.hero__stat-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: white;
}

.hero__stat-label {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== FEATURES BAR ===== */
.features-bar {
  background-color: var(--color-primary);
  padding: var(--space-5) 0;
}

.features-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.features-bar__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-dark-text);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

.features-bar__icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  color: var(--color-accent);
}

/* ===== CATEGORY SECTION ===== */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
}

.category-card {
  position: relative;
  aspect-ratio: 3/4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  background: var(--color-dark-bg);
}

.category-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  opacity: 0.7;
}

.category-card:hover .category-card__image {
  transform: scale(1.1);
  opacity: 0.9;
}

.category-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.8) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-5);
}

.category-card__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: white;
  margin-bottom: var(--space-1);
}

.category-card__count {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 1024px) {
  .categories-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 640px) {
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== CTA SECTION ===== */
.cta {
  background: linear-gradient(135deg, #0D0D0D 0%, #1A1A1A 50%, #111 100%);
  padding: var(--space-20) 0;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(212,168,83,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-12);
}

.cta__content {
  max-width: 500px;
}

.cta__label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.cta__title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  color: white;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.cta__text {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.6);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
}

.cta__search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-2);
  max-width: 400px;
}

.cta__search input {
  flex: 1;
  padding: var(--space-3) var(--space-5);
  color: white;
  font-size: var(--text-sm);
}

.cta__search input::placeholder {
  color: rgba(255,255,255,0.4);
}

.cta__image {
  flex-shrink: 0;
  width: 400px;
  height: 300px;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.cta__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 768px) {
  .cta__inner { flex-direction: column; text-align: center; }
  .cta__image { width: 100%; max-width: 400px; }
  .cta__search { margin: 0 auto; }
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--color-dark-bg);
  color: var(--color-dark-text);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-extrabold);
  color: white;
  margin-bottom: var(--space-4);
}

.footer__desc {
  font-size: var(--text-sm);
  color: var(--color-dark-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-5);
}

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

.footer__social-link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  color: var(--color-dark-text-secondary);
  transition: all var(--transition-fast);
  font-size: var(--text-sm);
}

.footer__social-link:hover {
  background: var(--color-accent);
  color: var(--color-dark-bg);
}

.footer__heading {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: white;
  margin-bottom: var(--space-5);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__link {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-dark-text-secondary);
  padding: var(--space-1) 0;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent);
}

.footer__bottom {
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-dark-text-secondary);
}

@media (max-width: 768px) {
  .footer__grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .footer__brand { grid-column: 1 / -1; max-width: none; }
  .footer__bottom { flex-direction: column; gap: var(--space-3); text-align: center; }
}

/* ===== POPULAR SCROLL ===== */
.popular-scroll {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  padding-bottom: var(--space-4);
  scroll-snap-type: x mandatory;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.popular-scroll::-webkit-scrollbar {
  display: none;
}

.popular-scroll .wallpaper-card {
  flex: 0 0 200px;
  scroll-snap-align: start;
}

/* ===== WALLPAPER CARD (Home specific) ===== */
.wallpaper-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  transition: all var(--transition-base);
  cursor: pointer;
}

.wallpaper-card__image {
  aspect-ratio: 9/16;
  overflow: hidden;
}

.wallpaper-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.wallpaper-card:hover .wallpaper-card__image img {
  transform: scale(1.08);
}

.wallpaper-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.8) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-4);
}

.wallpaper-card:hover .wallpaper-card__overlay {
  opacity: 1;
}

.wallpaper-card__title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: white;
  margin-bottom: var(--space-1);
}

.wallpaper-card__info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.7);
}

.wallpaper-card__badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 2;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__menu-btn { display: flex; }

  .hero {
    height: 60vh;
    min-height: 400px;
  }

  .hero__title {
    font-size: var(--text-3xl);
  }

  .hero__subtitle {
    font-size: var(--text-base);
  }

  .hero__stats {
    gap: var(--space-5);
  }

  .hero__stat-value {
    font-size: var(--text-xl);
  }

  .features-bar__inner {
    justify-content: center;
  }

  .features-bar__item span:last-child {
    display: none;
  }

  h2 {
    font-size: var(--text-2xl);
  }
}

@media (max-width: 480px) {
  .hero__search {
    flex-direction: column;
    gap: var(--space-2);
    border-radius: var(--radius-lg);
  }

  .hero__search button {
    width: 100%;
  }
}

/* Page top padding */
.page-content {
  margin-top: var(--nav-height);
}