/* ─── LayUp Shared Design System ─── */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg-dark: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #16161f;
  --accent: #22c55e;
  --accent-dim: #16a34a;
  --accent-glow: rgba(34, 197, 94, 0.15);
  --text-primary: #f0f0f5;
  --text-secondary: #8b8b9e;
  --text-dim: #5a5a6e;
  --border: #1e1e2a;
  --border-hover: #2a2a3a;
  --red: #ef4444;
  --amber: #f59e0b;
  --blue: #3b82f6;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── NAV ─── */
nav {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(12px);
  z-index: 100;
}
nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  text-decoration: none;
}
.logo span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 8px;
  transition: all 0.2s;
}
.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}
.nav-link.active {
  color: var(--accent);
  background: var(--accent-glow);
}
.nav-btn {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--bg-dark);
  background: var(--accent);
  padding: 8px 20px;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}
.nav-btn:hover {
  background: var(--accent-dim);
}

/* ─── PAGE HEADER ─── */
.page-header {
  padding: 48px 0 32px;
}
.page-header h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 8px;
}
.page-header p {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}
.btn-primary {
  color: var(--bg-dark);
  background: var(--accent);
}
.btn-primary:hover { background: var(--accent-dim); }
.btn-secondary {
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--accent); }
.btn-ghost {
  color: var(--text-secondary);
  background: transparent;
}
.btn-ghost:hover { color: var(--text-primary); }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-sm { padding: 8px 16px; font-size: 0.8rem; }
.btn-block { width: 100%; }
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ─── CARDS ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  transition: border-color 0.2s;
}
.card:hover { border-color: var(--border-hover); }
.card-clickable:hover { border-color: var(--accent); cursor: pointer; }

/* ─── FORM ELEMENTS ─── */
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.form-input {
  width: 100%;
  padding: 12px 16px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.2s;
}
.form-input:focus { border-color: var(--accent); }
.form-input::placeholder { color: var(--text-dim); }

/* ─── BADGES ─── */
.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 20px;
}
.badge-green {
  color: var(--accent);
  background: var(--accent-glow);
}
.badge-amber {
  color: var(--amber);
  background: rgba(245, 158, 11, 0.15);
}
.badge-blue {
  color: var(--blue);
  background: rgba(59, 130, 246, 0.15);
}

/* ─── PROGRESS BAR ─── */
.progress-bar-bg {
  width: 100%;
  height: 12px;
  background: var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
  border-radius: 10px;
  transition: width 0.6s ease;
}

/* ─── TABS ─── */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-card);
  padding: 4px;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-bottom: 32px;
  overflow-x: auto;
}
.tab {
  flex: 1;
  padding: 10px 20px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.tab:hover { color: var(--text-primary); }
.tab.active {
  color: var(--text-primary);
  background: var(--bg-dark);
}

/* ─── PRODUCT GRID ─── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 60px;
}
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.2s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}
.product-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.product-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--bg-dark);
}
.product-card-body {
  padding: 20px;
}
.product-card-brand {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.product-card-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.3;
}
.product-card-price {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
}
.product-card-layup {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ─── FOOTER ─── */
footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  margin-top: 60px;
}
footer p {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ─── LOADING ─── */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── EMPTY STATE ─── */
.empty-state {
  text-align: center;
  padding: 80px 20px;
}
.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}
.empty-state h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  margin-bottom: 8px;
}
.empty-state p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ─── TOAST ─── */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 14px 24px;
  background: var(--bg-card);
  border: 1px solid var(--accent);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 0.9rem;
  z-index: 1000;
  animation: slideUp 0.3s ease;
  max-width: 400px;
}
.toast.error { border-color: var(--red); }
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── MOBILE ─── */
@media (max-width: 768px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
  .tabs {
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
  }
  .nav-links { gap: 4px; }
  .nav-link { padding: 6px 10px; font-size: 0.8rem; }
  .nav-btn { padding: 6px 14px; font-size: 0.8rem; }
  .page-header { padding: 32px 0 24px; }
}