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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
  min-height: 100vh;
  color: #fff;
}

/* ─── Header ─── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(90deg, #00d2ff, #7a5cff, #ff6ec7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.nav {
  display: flex;
  gap: 8px;
}

.nav-btn {
  padding: 8px 20px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 24px;
  background: transparent;
  color: #ccc;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s;
}

.nav-btn:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.nav-btn.active {
  background: linear-gradient(135deg, #7a5cff, #00d2ff);
  border-color: transparent;
  color: #fff;
  font-weight: 600;
}

/* ─── Sort Bar ─── */
.sort-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 40px;
  max-width: 1400px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.sort-label {
  font-size: 14px;
  color: #888;
  margin-right: 4px;
}

.sort-btn {
  padding: 6px 16px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  background: rgba(255,255,255,0.05);
  color: #aaa;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.25s;
  white-space: nowrap;
}

.sort-btn:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.sort-btn.active {
  background: linear-gradient(135deg, #ff6ec7, #7a5cff);
  border-color: transparent;
  color: #fff;
  font-weight: 600;
}

/* ─── Catalog Grid ─── */
.catalog {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  padding: 40px;
  max-width: 1400px;
  margin: 0 auto;
}

.shoe-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
  position: relative;
}

.shoe-card:hover {
  transform: translateY(-8px) scale(1.02);
  border-color: rgba(122, 92, 255, 0.4);
  box-shadow: 0 20px 60px rgba(122, 92, 255, 0.15);
}

.shoe-card canvas {
  width: 100%;
  height: 220px;
  display: block;
}

.shoe-card-info {
  padding: 18px 20px;
}

.shoe-card-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.shoe-card-category {
  font-size: 12px;
  color: #aaa;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.shoe-card-price {
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(90deg, #00d2ff, #7a5cff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.shoe-card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: #ff6ec7;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 12px;
}

/* ─── Modal ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: #1a1a2e;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 24px;
  width: 90%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  z-index: 10;
  transition: background 0.2s;
}

.modal-close:hover {
  background: rgba(255,80,80,0.5);
}

.modal-body {
  display: flex;
  gap: 0;
}

@media (max-width: 700px) {
  .modal-body { flex-direction: column; }
}

/* ─── 3D Viewer ─── */
.viewer-container {
  flex: 1;
  min-height: 400px;
  position: relative;
  background: radial-gradient(circle at center, #1e1e3a, #0d0d1a);
  border-radius: 24px 0 0 24px;
}

@media (max-width: 700px) {
  .viewer-container { border-radius: 24px 24px 0 0; min-height: 300px; }
}

#viewer3d {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

#viewer3d:active {
  cursor: grabbing;
}

.viewer-controls {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ctrl-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.08);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ctrl-btn:hover {
  background: rgba(122, 92, 255, 0.4);
  border-color: #7a5cff;
}

.viewer-hint {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  pointer-events: none;
}

/* ─── Modal Info ─── */
.modal-info {
  flex: 0 0 320px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

@media (max-width: 700px) {
  .modal-info { flex: 1; padding: 20px; }
}

.modal-info h2 {
  font-size: 26px;
  font-weight: 800;
}

.modal-price {
  font-size: 30px;
  font-weight: 800;
  background: linear-gradient(90deg, #00d2ff, #7a5cff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.modal-desc {
  font-size: 14px;
  color: #aaa;
  line-height: 1.6;
}

.color-options {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.color-swatch {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}

.color-swatch.active,
.color-swatch:hover {
  border-color: #fff;
  transform: scale(1.15);
}

.size-options {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.size-btn {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.15);
  background: transparent;
  color: #ccc;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.size-btn:hover,
.size-btn.active {
  background: #7a5cff;
  border-color: #7a5cff;
  color: #fff;
}

.buy-btn {
  margin-top: 10px;
  padding: 14px;
  border: none;
  border-radius: 14px;
  background: linear-gradient(135deg, #7a5cff, #00d2ff);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.buy-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(122, 92, 255, 0.4);
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 3px; }

/* ─── Animations ─── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.shoe-card {
  animation: fadeInUp 0.5s ease both;
}

.shoe-card:nth-child(2) { animation-delay: 0.07s; }
.shoe-card:nth-child(3) { animation-delay: 0.14s; }
.shoe-card:nth-child(4) { animation-delay: 0.21s; }
.shoe-card:nth-child(5) { animation-delay: 0.28s; }
.shoe-card:nth-child(6) { animation-delay: 0.35s; }