/* ============================================================
   ThreadsHub — Design System
   ============================================================ */

/* ── 1. CSS Variables ─────────────────────────────────────── */
:root {
  --color-primary:    #0A0A0A;
  --color-gold:       #C9A96E;
  --color-gold-light: #E8D5B0;
  --color-cream:      #F5F0E8;
  --color-navy:       #1A1A2E;
  --color-gray-light: #F8F8F8;
  --color-gray-mid:   #E0E0E0;
  --color-text-dark:  #0A0A0A;
  --color-text-muted: #6B6B6B;
  --font-display:     'Playfair Display', Georgia, serif;
  --font-body:        'Inter', system-ui, sans-serif;
  --transition-fast:  0.2s ease;
  --transition-smooth:0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-soft:      0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover:     0 8px 32px rgba(0,0,0,0.14);
  --radius-card:      12px;
  --radius-btn:       6px;
}

/* ── 2. Base ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-dark);
  background: #fff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* Offset for the fixed navbar (64px nav + 34px marquee = 98px) */
main { padding-top: 98px; }

/* Home page hero handles its own offset — main has none */
body[data-hero-page="1"] main { padding-top: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: clamp(36px, 6vw, 64px); }
h2 { font-size: clamp(26px, 4vw, 40px); }
h3 { font-size: clamp(18px, 2.5vw, 26px); }

/* ── 3. Sticky Navbar ─────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
  background: transparent;
}

.site-nav.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.08);
}

/* Force white bg on non-hero pages */
.site-nav.solid {
  background: rgba(255,255,255,0.97);
  box-shadow: 0 1px 0 rgba(0,0,0,0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.nav-logo .logo-text {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-dark);
  letter-spacing: 0.04em;
  text-decoration: none;
  display: block;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  margin: 0; padding: 0;
}

.nav-links a {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--color-text-dark);
  text-decoration: none;
  letter-spacing: 0.04em;
  position: relative;
  padding-bottom: 2px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--color-gold);
  transition: width var(--transition-fast);
}

.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-icon-btn {
  color: var(--color-text-dark);
  text-decoration: none;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  transition: background var(--transition-fast);
  border: none;
  background: none;
  cursor: pointer;
}

.nav-icon-btn:hover { background: var(--color-gray-light); }

.nav-cart-badge {
  position: absolute;
  top: 0; right: 0;
  background: var(--color-gold);
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  width: 15px; height: 15px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--color-primary);
  transition: all var(--transition-fast);
}

/* ── 4. Marquee bar ───────────────────────────────────────── */
.marquee-bar {
  background: var(--color-primary);
  overflow: hidden;
  height: 34px;
  display: flex;
  align-items: center;
}

.marquee-track {
  display: flex;
  gap: 48px;
  white-space: nowrap;
  animation: marqueeScroll 32s linear infinite;
  font-size: 11px;
  font-weight: 500;
  color: var(--color-gold-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-body);
}

@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ── 5. Mobile dropdown menu ──────────────────────────────── */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 98px; left: 0; right: 0;
  background: #fff;
  border-top: 1px solid var(--color-gray-mid);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  z-index: 999;
  padding: 1.5rem;
  transform: translateY(-8px);
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.mobile-nav-drawer.open {
  display: block;
  transform: translateY(0);
  opacity: 1;
}

.mobile-nav-drawer a {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-dark);
  text-decoration: none;
  border-bottom: 1px solid var(--color-gray-light);
}

.mobile-nav-drawer a:last-child { border-bottom: none; }

/* ── 6. Hero ──────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 0 4rem;
  padding-top: 98px;
  max-width: 1400px;
  margin: 0 auto;
  gap: 4rem;
  position: relative;
}

.hero-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1.25rem;
  font-family: var(--font-body);
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 28px; height: 1px;
  background: var(--color-gold);
}

.hero-headline {
  font-size: clamp(48px, 6.5vw, 82px);
  line-height: 1.03;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
  font-family: var(--font-display);
  font-weight: 700;
}

.hero-headline em {
  font-style: italic;
  color: var(--color-gold);
}

.hero-sub {
  font-size: 16px;
  color: var(--color-text-muted);
  max-width: 420px;
  margin-bottom: 2.5rem;
  line-height: 1.75;
}

.hero-ctas { display: flex; gap: 1.25rem; align-items: center; flex-wrap: wrap; }

.hero-mosaic {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 12px;
  height: min(72vh, 600px);
  border-radius: 20px;
  overflow: hidden;
}

.hero-mosaic__item {
  overflow: hidden;
  background: var(--color-gray-light);
  position: relative;
}

.hero-mosaic__item:first-child {
  grid-row: span 2;
}

.hero-mosaic__item img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.6s ease;
}

.hero-mosaic__item:hover img { transform: scale(1.04); }

.hero-mosaic__placeholder {
  width: 100%; height: 100%;
  background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-gold-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  font-size: 48px;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.hero-scroll-hint span {
  display: block;
  width: 1px;
  height: 56px;
  background: linear-gradient(to bottom, transparent, var(--color-gold));
  animation: scrollLine 2.2s ease-in-out infinite;
  transform-origin: top;
}

@keyframes scrollLine {
  0%   { transform: scaleY(0); opacity: 0; }
  30%  { opacity: 1; }
  70%  { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(0); opacity: 0; transform-origin: bottom; }
}

/* ── 7. Buttons ───────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  text-transform: uppercase;
}

.btn-primary:hover {
  background: var(--color-navy);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  color: #fff;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-dark);
  text-decoration: none;
  border-bottom: 1.5px solid var(--color-gold);
  padding-bottom: 2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--font-body);
}

.btn-ghost:hover {
  color: var(--color-gold);
  border-color: var(--color-gold);
}

/* ── 8. Section Headings ──────────────────────────────────── */
.section-heading {
  text-align: center;
  margin-bottom: 3rem;
}

.section-heading__eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.75rem;
  font-family: var(--font-body);
}

.section-heading__title {
  font-size: clamp(26px, 3.5vw, 38px);
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.section-heading__line {
  width: 48px; height: 2px;
  background: var(--color-gold);
  margin: 0 auto;
  border-radius: 2px;
}

/* ── 9. Category Tiles ────────────────────────────────────── */
.category-tile {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: var(--radius-card);
  cursor: pointer;
  text-decoration: none;
  display: block;
}

.category-tile__bg {
  position: absolute;
  inset: 0;
  transition: transform var(--transition-smooth);
}

.category-tile:hover .category-tile__bg { transform: scale(1.06); }

.category-tile__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,10,0.65) 0%, rgba(10,10,10,0.1) 60%);
  transition: background var(--transition-smooth);
}

.category-tile:hover .category-tile__overlay {
  background: linear-gradient(to top, rgba(10,10,10,0.75) 0%, rgba(10,10,10,0.2) 70%);
}

.category-tile__content {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 1.25rem;
  transform: translateY(4px);
  transition: transform var(--transition-smooth);
}

.category-tile:hover .category-tile__content { transform: translateY(0); }

.category-tile__name {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-body);
  display: block;
}

.category-tile__icon {
  font-size: 32px;
  margin-bottom: 10px;
  opacity: 0.9;
}

/* category color palettes */
.cat-bg-1 { background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%); }
.cat-bg-2 { background: linear-gradient(135deg, #c9a96e 0%, #a07c4a 100%); }
.cat-bg-3 { background: linear-gradient(135deg, #2d3436 0%, #636e72 100%); }
.cat-bg-4 { background: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%); }
.cat-bg-5 { background: linear-gradient(135deg, #d63031 0%, #e17055 100%); }

/* ── 10. Product Cards ────────────────────────────────────── */
.th-product-card {
  position: relative;
  transition: transform var(--transition-smooth);
}

.th-product-card:hover { transform: translateY(-4px); }

.th-product-card__image-wrap {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  aspect-ratio: 3/4;
  background: var(--color-gray-light);
}

.th-product-card__img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: opacity var(--transition-smooth), transform 0.6s ease;
}

.th-product-card__img--hover {
  opacity: 0;
}

.th-product-card:hover .th-product-card__img--primary {
  opacity: 0;
  transform: scale(1.04);
}

.th-product-card:hover .th-product-card__img--hover {
  opacity: 1;
  transform: scale(1.04);
}

.th-product-card__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-light);
  transition: background var(--transition-fast);
}

.th-product-card:hover .th-product-card__placeholder { background: var(--color-gray-mid); }

.th-product-card__badge {
  position: absolute;
  top: 12px; left: 12px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
  font-family: var(--font-body);
  z-index: 2;
}

.th-product-card__badge--new  { background: var(--color-primary); color: #fff; }
.th-product-card__badge--sale { background: #D0021B; color: #fff; }
.th-product-card__badge--feat { background: var(--color-gold); color: #fff; }

.th-product-card__actions {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  display: flex;
  gap: 8px;
  padding: 12px;
  background: linear-gradient(to top, rgba(0,0,0,0.65), transparent);
  transform: translateY(100%);
  transition: transform var(--transition-smooth);
  z-index: 3;
}

.th-product-card:hover .th-product-card__actions { transform: translateY(0); }

.th-product-card__action-btn {
  padding: 10px 14px;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  font-family: var(--font-body);
  letter-spacing: 0.04em;
  flex: 1;
}

.th-product-card__action-btn--cart {
  background: #fff;
  color: var(--color-primary);
}

.th-product-card__action-btn--cart:hover {
  background: var(--color-gold);
  color: #fff;
}

.th-product-card__info {
  padding: 14px 2px 0;
}

.th-product-card__category {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 4px;
  font-family: var(--font-body);
}

.th-product-card__name {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--color-text-dark);
  text-decoration: none;
  display: block;
  margin-bottom: 6px;
  line-height: 1.35;
  transition: color var(--transition-fast);
}

.th-product-card__name:hover { color: var(--color-gold); }

.th-product-card__stars {
  display: flex;
  gap: 2px;
  margin-bottom: 8px;
}

.th-product-card__price {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-gold);
  font-family: var(--font-body);
}

.th-product-card__original {
  font-size: 12px;
  color: var(--color-text-muted);
  text-decoration: line-through;
  margin-left: 8px;
}

/* ── 11. Scroll Animations ────────────────────────────────── */
[data-aos] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

[data-aos].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-aos][data-aos-delay="1"] { transition-delay: 0.08s; }
[data-aos][data-aos-delay="2"] { transition-delay: 0.16s; }
[data-aos][data-aos-delay="3"] { transition-delay: 0.24s; }
[data-aos][data-aos-delay="4"] { transition-delay: 0.32s; }

/* ── 12. Why-us strip ─────────────────────────────────────── */
.features-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.feature-item__icon-wrap {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--color-cream);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  transition: background var(--transition-fast);
}

.feature-item:hover .feature-item__icon-wrap {
  background: var(--color-gold-light);
}

.feature-item__icon-wrap i {
  font-size: 18px;
  color: var(--color-gold);
}

.feature-item__title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
  font-family: var(--font-body);
}

.feature-item__desc {
  font-size: 12.5px;
  color: var(--color-text-muted);
}

/* ── 13. Products grid ────────────────────────────────────── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* ── 14. Mobile Bottom Navigation ────────────────────────── */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 62px;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 0.5px solid var(--color-gray-mid);
  z-index: 900;
  align-items: center;
  justify-content: space-around;
  padding-bottom: env(safe-area-inset-bottom);
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 10px;
  font-weight: 500;
  padding: 6px 12px;
  position: relative;
  transition: color var(--transition-fast);
  font-family: var(--font-body);
  letter-spacing: 0.04em;
}

.mobile-nav-item svg {
  width: 21px; height: 21px;
  stroke-width: 1.75;
}

.mobile-nav-item.active { color: var(--color-gold); }
.mobile-nav-item:hover  { color: var(--color-gold); }

.mobile-nav-badge {
  position: absolute;
  top: 2px; right: 6px;
  background: #D0021B;
  color: #fff;
  font-size: 9px;
  font-weight: 700;
  min-width: 15px; height: 15px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
}

/* ── 15. Toast Notifications ──────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 80px; right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column-reverse;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--color-primary);
  color: #fff;
  font-size: 13.5px;
  font-weight: 500;
  padding: 13px 18px 13px 16px;
  border-radius: 8px;
  border-left: 3px solid var(--color-gold);
  min-width: 240px;
  max-width: 320px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.22);
  transform: translateX(120%);
  opacity: 0;
  transition: transform 0.32s cubic-bezier(0.4,0,0.2,1), opacity 0.32s ease;
  pointer-events: all;
  font-family: var(--font-body);
  display: flex;
  align-items: center;
  gap: 10px;
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

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

.toast__icon { font-size: 16px; }

/* ── 16. Skeleton Loaders ─────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e8e8e8 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.6s infinite;
  border-radius: 4px;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skeleton-image {
  aspect-ratio: 3/4;
  border-radius: var(--radius-card);
}

.skeleton-title { height: 14px; width: 72%; }
.skeleton-price { height: 13px; width: 40%; }

/* ── 17. Flash Alerts (hidden — toasts replace these) ──────── */
.flash-alert { display: none; }

/* ── 18. Footer ───────────────────────────────────────────── */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.7);
  margin-top: 6rem;
}

.site-footer a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.site-footer a:hover { color: var(--color-gold); }

/* ── 19. Responsive Breakpoints ───────────────────────────── */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 120px 2rem 5rem;
    text-align: center;
    gap: 3rem;
  }

  .hero-eyebrow { justify-content: center; }
  .hero-eyebrow::before { display: none; }
  .hero-sub { max-width: 100%; }
  .hero-ctas { justify-content: center; }

  .hero-mosaic {
    height: 56vw;
    max-height: 440px;
  }

  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .features-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }

  .hero {
    padding-top: 110px;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .hero-headline { font-size: clamp(36px, 10vw, 52px); }
  .hero-mosaic { height: 60vw; max-height: 360px; }

  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }

  .mobile-bottom-nav { display: flex; }
  body { padding-bottom: 62px; }

  #toast-container { bottom: 74px; right: 1rem; }
}

@media (max-width: 480px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .th-product-card__name { font-size: 13px; }
  .th-product-card__price { font-size: 14px; }
  .features-strip { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .nav-inner { padding: 0 1rem; }
}