/* ============================================================
   FEED FLUXO LIMPO — Estilo Instagram
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=Inter:wght@300;400;500;600&display=swap');

:root {
  --bg:        #0a0a0f;
  --surface:   #111118;
  --card:      #16161f;
  --border:    #1e1e2e;
  --accent:    #7c3aed;
  --accent2:   #06b6d4;
  --gold:      #f59e0b;
  --danger:    #ef4444;
  --text:      #e4e4f0;
  --muted:     #6b7280;
  --white:     #ffffff;
  --radius:    16px;
  --radius-sm: 8px;
  --nav-h:     64px;
  --cat-h:     56px;
  --shadow:    0 4px 24px rgba(0,0,0,.5);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── TOP NAV ── */
.top-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(10,10,15,.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 100;
}

.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo img { height: 36px; border-radius: 8px; }

.nav-search {
  flex: 1;
  max-width: 340px;
  margin: 0 16px;
  position: relative;
}

.nav-search input {
  width: 100%;
  background: var(--border);
  border: 1px solid transparent;
  border-radius: 24px;
  padding: 8px 16px 8px 40px;
  color: var(--text);
  font-size: .875rem;
  outline: none;
  transition: border-color .2s;
}

.nav-search input:focus { border-color: var(--accent); }

.nav-search .icon-search {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 15px;
}

.nav-actions { display: flex; gap: 8px; align-items: center; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 7px 14px;
  font-size: .8rem;
  cursor: pointer;
  transition: all .2s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ── CATEGORIES BAR ── */
.cat-bar {
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  height: var(--cat-h);
  background: rgba(10,10,15,.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  overflow-x: auto;
  z-index: 99;
  scrollbar-width: none;
}
.cat-bar::-webkit-scrollbar { display: none; }

.cat-pill {
  flex-shrink: 0;
  background: var(--border);
  border: 1px solid transparent;
  color: var(--muted);
  border-radius: 24px;
  padding: 6px 16px;
  font-size: .8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
  white-space: nowrap;
}
.cat-pill:hover { color: var(--text); border-color: var(--accent); }
.cat-pill.active {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}

/* ── FEED GRID ── */
.feed-wrapper {
  padding-top: calc(var(--nav-h) + var(--cat-h) + 20px);
  padding-bottom: 60px;
  max-width: 700px;
  margin: 0 auto;
  padding-left: 12px;
  padding-right: 12px;
}

.feed-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* ── PRODUCT CARD ── */
.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s, box-shadow .25s;
  animation: fadeUp .4s ease both;
  position: relative;
  cursor: pointer;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(124,58,237,.2);
  border-color: var(--accent);
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card-img-wrap {
  position: relative;
  aspect-ratio: 1/1;
  overflow: hidden;
  background: var(--border);
}

.card-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.product-card:hover .card-img-wrap img { transform: scale(1.06); }

.badge-sale {
  position: absolute;
  top: 10px; left: 10px;
  background: var(--danger);
  color: #fff;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .05em;
  padding: 3px 8px;
  border-radius: 6px;
  text-transform: uppercase;
}

.card-actions-hover {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,.85));
  display: flex;
  justify-content: flex-end;
  gap: 6px;
  padding: 24px 10px 10px;
  opacity: 0;
  transition: opacity .25s;
}
.product-card:hover .card-actions-hover { opacity: 1; }

.icon-btn {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  backdrop-filter: blur(8px);
  border: none;
  color: #fff;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .2s;
}
.icon-btn:hover { background: var(--accent); }

.card-body {
  padding: 12px;
}

.card-cats {
  font-size: .65rem;
  color: var(--accent2);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-name {
  font-size: .82rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

.card-price { font-size: .8rem; }
.card-price del { color: var(--muted); margin-right: 4px; font-size: .75rem; }
.card-price strong { color: var(--gold); font-weight: 700; }

.card-footer {
  padding: 8px 12px 12px;
  display: flex;
  gap: 6px;
}

.btn-buy {
  flex: 1;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none;
  color: #fff;
  border-radius: var(--radius-sm);
  padding: 9px 0;
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s;
  text-decoration: none;
  text-align: center;
}
.btn-buy:hover { opacity: .85; }

.btn-share {
  width: 36px;
  background: var(--border);
  border: none;
  color: var(--text);
  border-radius: var(--radius-sm);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s, color .2s;
}
.btn-share:hover { background: var(--accent2); color: #fff; }

/* ── LOADER & SPINNER ── */
.loader-wrap {
  display: flex;
  justify-content: center;
  padding: 32px 0;
  gap: 8px;
}
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: bounce .6s infinite alternate;
}
.dot:nth-child(2) { animation-delay: .15s; background: var(--accent2); }
.dot:nth-child(3) { animation-delay: .3s; }

@keyframes bounce {
  from { transform: translateY(0); opacity: .4; }
  to   { transform: translateY(-10px); opacity: 1; }
}

.end-msg {
  text-align: center;
  padding: 32px 0;
  color: var(--muted);
  font-size: .85rem;
}

/* ── TOAST ── */
.toast {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 12px 24px;
  font-size: .85rem;
  z-index: 999;
  transition: transform .3s cubic-bezier(.34,1.56,.64,1);
  pointer-events: none;
  white-space: nowrap;
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* ── SHARE MODAL ── */
.overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.7);
  z-index: 200;
  display: none;
  align-items: flex-end;
  justify-content: center;
}
.overlay.open { display: flex; }

.share-sheet {
  background: var(--surface);
  border-radius: var(--radius) var(--radius) 0 0;
  border: 1px solid var(--border);
  border-bottom: none;
  padding: 24px 20px 40px;
  width: 100%;
  max-width: 500px;
  animation: slideUp .3s ease;
}
@keyframes slideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

.share-sheet h3 {
  font-family: 'Syne', sans-serif;
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--text);
}

.share-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.share-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 8px;
  cursor: pointer;
  color: var(--text);
  font-size: .7rem;
  text-decoration: none;
  transition: all .2s;
}
.share-btn:hover { border-color: var(--accent); background: var(--border); }
.share-btn span { font-size: 1.4rem; }

.share-url-row {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
.share-url-row input {
  flex: 1;
  background: var(--border);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  color: var(--muted);
  font-size: .78rem;
  outline: none;
}
.btn-copy {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
}

.close-sheet {
  display: block;
  width: 100%;
  background: var(--border);
  border: none;
  color: var(--muted);
  border-radius: var(--radius-sm);
  padding: 10px;
  font-size: .82rem;
  cursor: pointer;
  margin-top: 12px;
}

/* ── SKELETON ── */
.skeleton {
  background: linear-gradient(90deg, var(--card) 25%, var(--border) 50%, var(--card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius);
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skel-card { height: 280px; }

/* ── RESPONSIVE ── */
@media (max-width: 400px) {
  .nav-search { display: none; }
  .feed-grid { gap: 8px; }
}