/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: 0 4px 14px rgba(var(--color-primary-rgb), 0.35);
}
.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(var(--color-primary-rgb), 0.45);
}
.btn--secondary {
  background: transparent;
  border-color: rgba(255,255,255,0.4);
  color: #fff;
}
.btn--secondary:hover { border-color: #fff; background: rgba(255,255,255,0.08); }
.btn--outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn--outline:hover { background: var(--color-bg-subtle); }

/* Glass card */
.card-glass {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(37, 99, 235, 0.15);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.card-glass:hover {
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: var(--shadow-glow);
}
.section:not(.section--dark) .card-glass {
  background: #fff;
  border-color: var(--color-border);
}
.section:not(.section--dark) .card-glass:hover {
  border-color: var(--color-primary);
}

/* Tags */
.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 0.75rem; font-weight: 500; }
.tag--hot { background: rgba(239,68,68,0.12); color: var(--color-hot); }
.tag--new { background: rgba(6,182,212,0.12); color: var(--color-new); }

/* Product / feature cards */
.feature-card {
  padding: 28px;
  border-radius: var(--radius-md);
  background: #fff;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}
.feature-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}
.feature-card img { width: 56px; margin-bottom: 16px; }
.feature-card h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 8px; }
.feature-card p { color: var(--color-text-secondary); font-size: 0.875rem; }

/* Marketplace card */
.mp-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}
.mp-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-glow); }
.mp-card__img { position: relative; aspect-ratio: 4/3; overflow: hidden; }
.mp-card__img img { width: 100%; height: 100%; object-fit: cover; }
.mp-card__body { padding: 16px; }
.mp-card__title { font-size: 0.9375rem; font-weight: 600; margin-bottom: 8px; }
.mp-card__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.mp-card__tags a {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  padding: 2px 8px;
  background: var(--color-bg-subtle);
  border-radius: 4px;
}
.mp-card__tags a:hover { color: var(--color-primary); }

/* Form */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.875rem; font-weight: 500; margin-bottom: 8px; }
.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.form-input:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: none;
}

/* CTA banner */
.cta-banner {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1B3A6B 100%);
  padding: 48px 0;
  text-align: center;
  color: var(--color-text-on-dark);
}
.cta-banner h3 { font-size: 1.5rem; margin-bottom: 20px; }

/* Stats strip */
.stats-strip {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 32px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.stat-item { text-align: center; }
.stat-item strong {
  display: block;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
}
.stat-item span { font-size: 0.875rem; color: var(--color-text-muted); }

/* Pagination */
.pagination { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-top: 40px; }
.page-btn {
  min-width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-size: 0.875rem;
  transition: var(--transition);
}
.page-btn:hover, .page-btn.on {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* Algorithm tabs (homepage) */
.algo-tabs { display: grid; grid-template-columns: 200px 1fr; gap: 24px; }
@media (max-width: 992px) { .algo-tabs { grid-template-columns: 1fr; } }
.algo-tabs__nav { display: flex; flex-direction: column; gap: 8px; }
.algo-tabs__nav-item {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
  transition: var(--transition);
  border: 1px solid transparent;
}
.algo-tabs__nav-item:hover { background: var(--color-bg-subtle); }
.algo-tabs__nav-item.is-active {
  background: var(--color-primary);
  color: #fff;
}
.algo-tabs__panel { display: none; }
.algo-tabs__panel.is-active { display: block; }
.algo-links { display: flex; flex-wrap: wrap; gap: 10px; }
.algo-links a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-subtle);
  font-size: 0.875rem;
  transition: var(--transition);
}
.algo-links a:hover { background: var(--color-primary); color: #fff; }

/* Contact cards */
.contact-card {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 24px;
  border-left: 3px solid var(--color-primary);
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.contact-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; }
.contact-card p { color: var(--color-text-secondary); font-size: 0.875rem; }