:root {
  --btn-radius: 9999px;
}

.btn-hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.6rem;
  border-radius: var(--btn-radius);
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
  font-weight: 600;
  box-shadow: 0 10px 30px hsla(16, 85%, 60%, 0.25);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-hero:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 32px hsla(16, 85%, 60%, 0.32);
}

.btn-hero-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.6rem;
  border-radius: var(--btn-radius);
  border: 1px solid hsl(var(--border));
  background: transparent;
  color: hsl(var(--foreground));
  font-weight: 600;
  transition: transform 0.2s ease, border 0.2s ease, background 0.2s ease;
}

.btn-hero-outline:hover {
  transform: translateY(-1px);
  border-color: hsl(var(--primary));
  background: hsl(var(--primary) / 0.05);
}

.form-input {
  width: 100%;
  border-radius: 0.9rem;
  border: 1px solid hsl(var(--border));
  padding: 0.85rem 1rem;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  transition: border 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus {
  outline: none;
  border-color: hsl(var(--primary));
  box-shadow: 0 0 0 3px hsl(var(--primary) / 0.15);
}

.slider-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9999px;
  background: hsl(var(--background) / 0.8);
  backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  border: 1px solid hsl(var(--border));
  color: hsl(var(--foreground));
  font-size: 1.2rem;
  cursor: pointer;
  transition: background 0.2s ease;
  box-shadow: var(--shadow-md);
}

.slider-nav.left { left: 1rem; }
.slider-nav.right { right: 1rem; }
.slider-nav:hover { background: hsl(var(--background)); }

.image-counter {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  background: hsl(var(--background) / 0.8);
  backdrop-filter: blur(6px);
  font-size: 0.9rem;
  color: hsl(var(--foreground));
}

#thumbs .thumb {
  flex-shrink: 0;
  width: 5rem;
  height: 5rem;
  border-radius: 0.9rem;
  overflow: hidden;
  border: 2px solid hsl(var(--border));
  transition: border 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

#thumbs .thumb.active {
  border-color: hsl(var(--primary));
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

.success-message {
  margin-top: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: 0.9rem;
  background: hsl(var(--primary) / 0.1);
  color: hsl(var(--primary));
  font-size: 0.95rem;
  text-align: center;
}